fix(export): fix OWLExporter Turtle invalid syntax and silent data-property omission (#478)

- Add _ttl_block() helper to accumulate all predicate-object pairs before
  writing, producing a single valid Turtle subject block terminated by one
  period — eliminates the bug where rdfs:subClassOf / domain / range were
  appended after a closed '.' block
- Add missing data_properties loop to _export_owl_turtle so
  owl:DatatypeProperty declarations are no longer silently dropped
- Add _escape_ttl_str() to escape quotes, backslashes, newlines, carriage
  returns, and tabs inside Turtle string literals (rdfs:label, rdfs:comment,
  owl:versionInfo)
- Unify optional-field null checks to consistent x = prop.get(); if x: pattern
- Add 43 tests in tests/export/test_owl_exporter.py covering syntax validity,
  data properties, string escaping, null handling, and header output
- Update CHANGELOG.md with [Unreleased] entry

Closes #478

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/init

@@ -0,0 +1 @@
+# Initialization

.claude/skills/init

@@ -0,0 +1 @@
+# Intialization

.claude/skills/semantica/init

@@ -0,0 +1 @@
+# Initialization

CHANGELOG.md

@@ -7,6 +7,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- **Fix: `OWLExporter._export_owl_turtle` invalid Turtle syntax and silent data-property omission** (closes #478 by @KaifAhmad1):
+  - **Bug 1 — Invalid Turtle syntax**: `_export_owl_turtle` unconditionally wrote `rdfs:label` with a closing period (`.`), then appended `rdfs:subClassOf`, `rdfs:domain`, and `rdfs:range` triples after the closed block. Any RDF parser would reject the output. Fixed by introducing `_ttl_block(subject_uri, rdf_type, predicates)` — all predicate-object pairs for a subject are accumulated first, then joined with ` ;\n    ` and terminated with a single ` .`, producing valid Turtle in all cases.
+  - **Bug 2 — Data properties silently dropped**: `_export_owl_turtle` had loops for `classes` and `object_properties` but no loop for `data_properties`, so all `owl:DatatypeProperty` declarations were silently omitted. Added the missing loop, mirroring the existing object-property loop.
+  - **String escaping**: User-provided strings (`name`, `description`, `comment`, version) were embedded directly into Turtle string literals without escaping. A class named `John"s Class` or a comment containing a backslash or newline produced unparseable output. Added `_escape_ttl_str()` static method (escapes `"`, `\`, `\n`, `\r`, `\t`) applied at every `rdfs:label`, `rdfs:comment`, and `owl:versionInfo` site.
+  - **Null-check consistency**: All optional field reads now use `x = prop.get("field"); if x:` uniformly — eliminates the mixed pattern of `.get()` guards followed by direct `[]` access.
+  - 43 tests added in `tests/export/test_owl_exporter.py` across five suites: `TestTurtleSyntaxValidity` (5), `TestDataPropertiesInTurtle` (8), `TestTurtleHeader` (4), `TestTurtleStringEscaping` (16), `TestNullFieldHandling` (7), plus `TestObjectPropertyListDomainRange` (2) and `TestEquivalentClass` (1).
+
+- **Enhancement: Node distance semantics in path responses** (closes #472 by @KaifAhmad1): `PathResponse` now surfaces two new first-class fields — `hop_count: int` (equal to `len(path) - 1`; `0` for self-paths) and `distance_band: str` — so callers no longer need to count hops or implement band classification themselves. Four bands are defined: `"direct"` (0–1 hops), `"near"` (2–3), `"mid-range"` (4–6), `"distant"` (7+). The classification function `classify_path_distance()` lives in `semantica/utils/helpers.py` as the single source of truth; both the Explorer route and the visualizer import from it. `KGVisualizer.visualize_network()` gains an optional `highlight_path: list[str]` parameter: when provided, path edges are rendered as a separate orange trace with opacity and stroke width scaled to the distance band (direct: 1.0 / 4 px → distant: 0.35 / 1.5 px), while non-path edges render at reduced opacity underneath. Edge direction is respected — only the forward pairs `(A, B)` along the path are matched; reverse back-edges in directed graphs are not incorrectly highlighted. A logger warning is emitted when any node ID in `highlight_path` has no layout position, surfacing silent no-op mismatches. Frontend `PathResponse` type in `GraphInspectorPanel.tsx` and `GraphWorkspaceShell.tsx` extended with `hop_count: number` and `distance_band: "direct" | "near" | "mid-range" | "distant"`. All changes are additive; no existing fields removed. 10 new tests: 2 API-level (`test_response_includes_hop_count_and_distance_band`, `test_one_hop_path_is_direct`) and 8 unit tests covering all four band boundaries (0, 1, 2, 3, 4, 6, 7, 20 hops).
+
+- **Enhancement: Bidirectional path finding in Knowledge Explorer** (closes #469 by @KaifAhmad1): Path queries in the Explorer were direction-sensitive — querying B→A when only the edge A→B existed always returned no result, because `PathFinder._get_neighbors()` called `graph.neighbors(node)` which on a `nx.DiGraph` yields only successors. Added a `directed: bool = True` parameter to `bfs_shortest_path()` and `dijkstra_shortest_path()`. When `directed=False` a lightweight undirected view is built via `graph.to_undirected()` for the traversal pass only; the original directed edges are preserved and returned in the response. A `_make_undirected_view()` helper encapsulates the conversion and falls back safely for non-NetworkX graph types. The `/api/graph/node/{id}/path` route exposes the parameter as a query string flag (`?directed=false`); `PathResponse` gains a `directed: bool` field that echoes the mode used. Default is `True`, so all existing callers are unaffected. The route also gained an empty-path 404 guard — previously a traversal that found no path returned `200` with `path: []` instead of `404`. 21 new tests: 12 unit tests in `TestBidirectionalPathFinding` (`tests/kg/test_path_finder.py`) and 9 API-level tests in `TestBidirectionalPathRoute` (`tests/explorer/test_explorer_api.py`).
+
+- **Enhancement: Native `KnowledgeGraph` type support in `KGVisualizer`** (PR `kg` by @KaifAhmad1, closes #471): Added `semantica/kg/knowledge_graph.py` — a formal `KnowledgeGraph` dataclass (`entities`, `relationships`, `metadata`) that is now the canonical in-memory type produced and consumed by the Semantica KG pipeline. Exported from `semantica.kg`. `KGVisualizer` gains `_convert_knowledge_graph()` — an authoritative, non-mutating conversion path from `KnowledgeGraph` to the internal dict format — and `_normalize_graph()` now routes `isinstance(graph, KnowledgeGraph)` through it as an explicit fast-path before duck-typing. All five public entry points (`visualize_network`, `visualize_communities`, `visualize_centrality`, `visualize_entity_types`, `visualize_relationship_matrix`) accept `KnowledgeGraph` directly; no manual conversion required. All existing callers passing dicts or duck-typed objects are unaffected. 15 new tests in `TestFormalKnowledgeGraphType` (conversion shape, non-mutation, determinism, routing, all five entry points, import availability).
+- **Fix: `KGVisualizer` now accepts `KnowledgeGraph` objects in all `visualize_*` methods** (PR `visualization` by @KaifAhmad1, closes #458): All five public methods (`visualize_network`, `visualize_communities`, `visualize_centrality`, `visualize_entity_types`, `visualize_relationship_matrix`) previously called `graph.get("entities", [])`, silently producing no output when passed a non-dict object. Added `_normalize_graph()` which duck-types the input — dicts pass through unchanged; any object exposing `.entities` / `.relationships` attributes (e.g. the result of `GraphBuilder.build()`) is converted to the canonical dict form; anything else raises a clear `ProcessingError` naming the offending type. 21 tests added in `tests/visualization/test_kg_visualizer_normalize_graph.py`.
+
 - **Security: 12 vulnerability fixes across CRITICAL → LOW severity** (PR `security-enhancement` by @KaifAhmad1):
 
   **Critical**

README.md

@@ -14,6 +14,7 @@
 [![CI](https://github.com/Hawksight-AI/semantica/workflows/CI/badge.svg)](https://github.com/Hawksight-AI/semantica/actions)
 [![Discord](https://img.shields.io/badge/Discord-Join%20Community-5865F2?logo=discord&logoColor=white)](https://discord.gg/sV34vps5hH)
 [![X](https://img.shields.io/badge/X-Follow%20Semantica-black?logo=x&logoColor=white)](https://x.com/BuildSemantica)
+[![OpenClaw](https://img.shields.io/badge/OpenClaw-Plugin-FF3B30?logo=github&logoColor=white)](https://openclaw.ai)
 
 ### ⭐ Give us a Star · 🍴 Fork us · 💬 Join our Discord · 🐦 Follow on X
 
@@ -45,7 +46,7 @@ Semantica is the **context and intelligence layer** you add on top of your exist
 - ✅ **Reasoning Engines** — forward chaining, Rete networks, deductive, abductive, and SPARQL. Explainable paths, not black boxes.
 - ✅ **Quality & Deduplication** — conflict detection, entity resolution, and pipeline validation built in.
 
-> Works alongside LangChain, LlamaIndex, AutoGen, CrewAI, and any LLM — Semantica is the **accountability layer** on top, not a replacement.
+> Works alongside **Agno** and any LLM — Semantica is the **accountability layer** on top, not a replacement. LangChain, LangGraph, CrewAI, and more coming soon.
 
 ```bash
 pip install semantica
@@ -53,17 +54,314 @@ pip install semantica
 
 ---
 
-## Plugins (Claude, Cursor, Codex)
+## 🔌 Works With Every AI Tool
 
-Semantica includes a cross-platform plugin bundle under `plugins/` for community use:
+Semantica ships **native plugin bundles** for Claude Code, Cursor, and Codex, an **MCP server** (`python -m semantica.mcp_server`) for Windsurf, Cline, Continue, VS Code, Claude Desktop, and OpenClaw, and a **REST API** (FastAPI, port 8000) for any other tool.
 
-- 17 domain skills (context graphs, decision intelligence, explainability, reasoning, provenance, ontology, temporal, visualization)
-- Specialized agents (`decision-advisor`, `explainability`, `kg-assistant`)
-- Hook configuration and platform-specific manifests for Claude, Cursor, and Codex
+<table>
 
-See the community setup guide:
+<!-- ── Native Plugin Bundle ──────────────────────────────────────────── -->
+<tr>
+<th colspan="3" align="left">🔌 Native Plugin Bundle</th>
+<th colspan="5" align="left">⚡ MCP Server + Plugin</th>
+</tr>
+<tr>
+<td align="center" width="12.5%">
+<a href="https://claude.com/product/claude-code"><img src="https://github.com/anthropics.png?size=120" alt="Claude Code" width="48" height="48" /></a><br/>
+<strong>Claude Code</strong><br/>
+<sub>17 skills · 3 agents · hooks</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://cursor.com"><img src="https://www.freelogovectors.net/wp-content/uploads/2025/06/cursor-logo-freelogovectors.net_.png" alt="Cursor" width="48" height="48" /></a><br/>
+<strong>Cursor</strong><br/>
+<sub>17 skills · 3 agents</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/openai/codex"><img src="https://github.com/openai.png?size=120" alt="Codex CLI" width="48" height="48" /></a><br/>
+<strong>Codex CLI</strong><br/>
+<sub>17 skills · 3 agents</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://windsurf.com"><img src="https://exafunction.github.io/public/brand/windsurf-black-symbol.svg" alt="Windsurf" width="48" height="48" /></a><br/>
+<strong>Windsurf</strong><br/>
+<sub><a href="plugins/.windsurf-plugin/">plugin</a></sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/cline/cline"><img src="https://github.com/cline.png?size=120" alt="Cline" width="48" height="48" /></a><br/>
+<strong>Cline</strong><br/>
+<sub><a href="plugins/.cline-plugin/">plugin</a></sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/continuedev/continue"><img src="https://github.com/continuedev.png?size=120" alt="Continue" width="48" height="48" /></a><br/>
+<strong>Continue</strong><br/>
+<sub><a href="plugins/.continue-plugin/">plugin</a></sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/microsoft/vscode"><img src="https://github.com/microsoft.png?size=120" alt="VS Code" width="48" height="48" /></a><br/>
+<strong>VS Code</strong><br/>
+<sub><a href="plugins/.vscode-plugin/">plugin</a></sub>
+</td>
+<td align="center" width="12.5%">
+<a href="integrations/openclaw/"><img src="https://github.com/openclaw.png?size=120" alt="OpenClaw" width="48" height="48" /></a><br/>
+<strong>OpenClaw</strong><br/>
+<sub>MCP + <a href="integrations/openclaw/">plugin</a></sub>
+</td>
+</tr>
 
-- [`plugins/.claude-plugin/README.md`](plugins/.claude-plugin/README.md)
+<!-- ── MCP Server only · REST API ───────────────────────────────────── -->
+<tr>
+<th colspan="1" align="left">☁️ MCP Server</th>
+<th colspan="7" align="left">🌐 REST API</th>
+</tr>
+<tr>
+<td align="center" width="12.5%">
+<a href="https://claude.ai/download"><img src="https://github.com/anthropics.png?size=120" alt="Claude Desktop" width="48" height="48" /></a><br/>
+<strong>Claude Desktop</strong><br/>
+<sub>MCP server</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/features/copilot"><img src="https://github.com/github.png?size=120" alt="GitHub Copilot" width="48" height="48" /></a><br/>
+<strong>GitHub Copilot</strong><br/>
+<sub>REST API</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/RooCodeInc/Roo-Code"><img src="https://github.com/RooCodeInc.png?size=120" alt="Roo Code" width="48" height="48" /></a><br/>
+<strong>Roo Code</strong><br/>
+<sub>REST API</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/block/goose"><img src="https://github.com/block.png?size=120" alt="Goose" width="48" height="48" /></a><br/>
+<strong>Goose</strong><br/>
+<sub>REST API</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/Kilo-Org/kilocode"><img src="https://github.com/Kilo-Org.png?size=120" alt="Kilo Code" width="48" height="48" /></a><br/>
+<strong>Kilo Code</strong><br/>
+<sub>REST API</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/Aider-AI/aider"><img src="https://github.com/Aider-AI.png?size=120" alt="Aider" width="48" height="48" /></a><br/>
+<strong>Aider</strong><br/>
+<sub>REST API</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/aws/amazon-q-developer-cli"><img src="https://github.com/aws.png?size=120" alt="Amazon Q" width="48" height="48" /></a><br/>
+<strong>Amazon Q</strong><br/>
+<sub>REST API</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://zed.dev"><img src="https://github.com/zed-industries.png?size=120" alt="Zed" width="48" height="48" /></a><br/>
+<strong>Zed</strong><br/>
+<sub>REST API</sub>
+</td>
+</tr>
+
+<!-- ── Any tool via REST ─────────────────────────────────────────────── -->
+<tr>
+<th colspan="8" align="left">🔧 Any Tool</th>
+</tr>
+<tr>
+<td align="center" colspan="8">
+<img src="https://img.shields.io/badge/109-endpoints-1f6feb?style=flat-square" alt="REST API" width="48" /><br/>
+<strong>Any agent</strong><br/>
+<sub>109 REST endpoints · FastAPI · port 8000</sub>
+</td>
+</tr>
+
+</table>
+
+### Agentic Frameworks
+
+Semantica integrates with **Agno** today. Coming soon: LangChain, LangGraph, CrewAI, LlamaIndex, AutoGen, OpenAI Agents SDK, Google ADK, and more.
+
+<table>
+<tr>
+<th colspan="8" align="left">✅ Supported</th>
+</tr>
+<tr>
+<td align="center" width="12.5%">
+<a href="https://github.com/agno-agi/agno"><img src="https://github.com/agno-agi.png?size=120" alt="Agno" width="48" height="48" /></a><br/>
+<strong>Agno</strong><br/>
+<sub>First-class · <code>pip install semantica[agno]</code></sub>
+</td>
+</tr>
+<tr>
+<th colspan="8" align="left">🔜 Coming Soon</th>
+</tr>
+<tr>
+<td align="center" width="12.5%">
+<a href="https://github.com/langchain-ai/langchain"><img src="https://github.com/langchain-ai.png?size=120" alt="LangChain" width="48" height="48" /></a><br/>
+<strong>LangChain</strong><br/>
+<sub>Coming soon</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/langchain-ai/langgraph"><img src="https://github.com/langchain-ai.png?size=120" alt="LangGraph" width="48" height="48" /></a><br/>
+<strong>LangGraph</strong><br/>
+<sub>Coming soon</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/crewAIInc/crewAI"><img src="https://github.com/crewAIInc.png?size=120" alt="CrewAI" width="48" height="48" /></a><br/>
+<strong>CrewAI</strong><br/>
+<sub>Coming soon</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/run-llama/llama_index"><img src="https://github.com/run-llama.png?size=120" alt="LlamaIndex" width="48" height="48" /></a><br/>
+<strong>LlamaIndex</strong><br/>
+<sub>Coming soon</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/microsoft/autogen"><img src="https://github.com/microsoft.png?size=120" alt="AutoGen" width="48" height="48" /></a><br/>
+<strong>AutoGen</strong><br/>
+<sub>Coming soon</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/openai/openai-agents-python"><img src="https://github.com/openai.png?size=120" alt="OpenAI Agents SDK" width="48" height="48" /></a><br/>
+<strong>OpenAI Agents</strong><br/>
+<sub>Coming soon</sub>
+</td>
+<td align="center" width="12.5%">
+<a href="https://github.com/google/adk-python"><img src="https://github.com/google.png?size=120" alt="Google ADK" width="48" height="48" /></a><br/>
+<strong>Google ADK</strong><br/>
+<sub>Coming soon</sub>
+</td>
+</tr>
+</table>
+
+> **Agno — First-Class Integration** · `pip install semantica[agno]`
+>
+> Five integration modules live in [`integrations/agno/`](integrations/agno/):
+>
+> | Module | Class | What it does |
+> |---|---|---|
+> | `context_store.py` | `AgnoContextStore` | Graph-backed agent memory — store and retrieve structured context |
+> | `knowledge_graph.py` | `AgnoKnowledgeGraph` | Implements Agno's `AgentKnowledge` protocol; full extraction pipeline |
+> | `decision_kit.py` | `AgnoDecisionKit` | 6 decision-intelligence tools for Agno agents |
+> | `kg_toolkit.py` | `AgnoKGToolkit` | 7 KG pipeline tools (build, query, enrich, export) |
+> | `shared_context.py` | `AgnoSharedContext` | Shared context graph for multi-agent team coordination |
+
+### Plugin Bundles (Claude Code · Cursor · Codex)
+
+Native plugin bundles live under [`plugins/`](plugins/). Each directory contains a `plugin.json`, `marketplace.json`, and `README.md`.
+
+| Bundle | Directory | Tools |
+|---|---|---|
+| Claude Code | [`plugins/.claude-plugin/`](plugins/.claude-plugin/) | 17 skills · 3 agents · hooks |
+| Cursor | [`plugins/.cursor-plugin/`](plugins/.cursor-plugin/) | 17 skills · 3 agents · hooks |
+| Codex CLI | [`plugins/.codex-plugin/`](plugins/.codex-plugin/) | 17 skills · 3 agents |
+| Windsurf | [`plugins/.windsurf-plugin/`](plugins/.windsurf-plugin/) | 17 skills · 3 agents · MCP config |
+| Cline | [`plugins/.cline-plugin/`](plugins/.cline-plugin/) | 17 skills · 3 agents · MCP config |
+| Continue | [`plugins/.continue-plugin/`](plugins/.continue-plugin/) | 17 skills · 3 agents · MCP config |
+| VS Code | [`plugins/.vscode-plugin/`](plugins/.vscode-plugin/) | 17 skills · 3 agents · MCP config |
+| OpenClaw | [`plugins/.openclaw-plugin/`](plugins/.openclaw-plugin/) | 17 skills · 3 agents · MCP config |
+
+**17 domain skills:**
+
+| Skill | What it does |
+|---|---|
+| `extract` | Full semantic extraction pipeline: NER, relations, events, coreference, triplets |
+| `ingest` | Data ingestion from files, databases, APIs, streams, and MCP servers |
+| `query` | SPARQL, Cypher, keyword search, structured graph patterns |
+| `ontology` | Schema management, concepts, relationships, alignments |
+| `validate` | Pipeline, extraction, schema, and ontology validation |
+| `deduplicate` | Duplicate detection and entity merging with fuzzy matching |
+| `embed` | Node2Vec embeddings, similarity scoring, link prediction |
+| `reason` | Deductive, abductive, Datalog, SPARQL, and Rete reasoning engines |
+| `decision` | Record, query, and analyze decisions; find precedents; causal analysis |
+| `causal` | Cause-effect chains, interventions, counterfactuals, causal influence |
+| `temporal` | Point-in-time queries, snapshots, timelines, temporal causal analysis |
+| `provenance` | Data lineage, source attribution, audit trails |
+| `policy` | Policy definition, enforcement, compliance checks, access control |
+| `explain` | Decision logic transparency, causal context, audit-ready explanations |
+| `export` | Multi-format export: JSON, RDF, Parquet, CSV, GraphML |
+| `change` | Graph change tracking, diffs, temporal updates, impact analysis |
+| `visualize` | Topology, centrality, communities, paths, embeddings, decision graphs |
+
+**3 specialized agents:**
+
+| Agent | Role |
+|---|---|
+| `kg-assistant` | General-purpose KG-aware assistant — knows all APIs and method signatures |
+| `decision-advisor` | Decision intelligence specialist: causal reasoning, precedents, policy violations |
+| `explainability` | Reasoning transparency specialist — generates audit-ready explanation reports |
+
+**Hooks** (`plugins/hooks/hooks.json`) — `PreToolUse` / `PostToolUse` matchers for syntax validation and automated warnings.
+
+→ [`plugins/.claude-plugin/README.md`](plugins/.claude-plugin/README.md)
+
+### MCP Server (expose Semantica to any MCP-aware tool)
+
+Semantica ships a full **MCP server** (`semantica/mcp_server.py`) — run it once and any MCP-compatible tool connects automatically:
+
+```bash
+python -m semantica.mcp_server
+```
+
+Add to your tool's config (Claude Desktop, Windsurf, Cline, Continue, VS Code, Roo Code):
+
+```json
+{
+  "mcpServers": {
+    "semantica": {
+      "command": "python",
+      "args": ["-m", "semantica.mcp_server"]
+    }
+  }
+}
+```
+
+**12 tools exposed:** `extract_entities`, `extract_relations`, `record_decision`, `query_decisions`, `find_precedents`, `get_causal_chain`, `add_entity`, `add_relationship`, `run_reasoning`, `get_graph_analytics`, `export_graph`, `get_graph_summary`
+
+**3 resources:** `semantica://graph/summary`, `semantica://decisions/list`, `semantica://schema/info`
+
+See [`plugins/.claude-plugin/README.md`](plugins/.claude-plugin/README.md) for per-tool config snippets.
+
+### MCP Client (Ingest from MCP Servers)
+
+Semantica also includes an **MCP client** (`semantica/ingest/mcp_client.py`) that lets you pull data from any Python/FastMCP server into a knowledge graph:
+
+```python
+from semantica.ingest import MCPClient
+
+client = MCPClient("http://your-mcp-server:8080")
+resources = client.list_resources()   # discover available resources
+data      = client.read_resource("resource://your-data")
+```
+
+Supported connection schemes: `http://`, `https://`, `mcp://`, `sse://` · JSON-RPC · auth support · dynamic capability discovery.
+
+---
+
+## 🖥️ Semantica Knowledge Explorer
+
+A real-time visual interface for exploring every dimension of your knowledge graph — built into the repo under [`explorer/`](explorer/).
+
+| Workspace | What you can do |
+|---|---|
+| **Knowledge Graph** | Pan, zoom, and inspect a live Sigma.js graph canvas with ForceAtlas2 layout |
+| **Timeline** | Scrub through temporal events and watch the graph evolve |
+| **Decisions** | Browse the causal chain behind every recorded decision with outcome badges |
+| **Registry** | Live audit log of every graph mutation — add-node, add-edge, merge, delete |
+| **Entity Resolution** | Review and merge duplicate entities detected by the deduplication engine |
+| **KG Overview** | Aggregate stats, community breakdown, centrality heatmap |
+| **Ontology** | SKOS/OWL vocabulary hierarchy and auto-generated schema summary |
+
+### Run locally
+
+```bash
+# 1. Start the Semantica backend (port 8000)
+python -m semantica.server
+
+# 2. In a second terminal
+cd explorer
+npm install
+npm run dev
+```
+
+Open **http://localhost:5173** — the Explorer connects automatically. All `/api` and `/ws` traffic is proxied to `127.0.0.1:8000` by Vite, so no CORS configuration is needed.
+
+> **Requirements:** Node 18+ · Python 3.8+ · npm 9+
+
+For the full setup guide, troubleshooting, and production build instructions see [`explorer/README.md`](explorer/README.md).
 
 ---
 
@@ -347,6 +645,7 @@ Semantic memory with hybrid search and metadata filtering.
 | `semantica.change_management` | Version storage, change tracking, checksums, audit trails, compliance support for KGs and ontologies |
 | `semantica.triplet_store` | RDF triplet store integration — Blazegraph, Jena, RDF4J; SPARQL queries and bulk loading |
 | `semantica.visualization` | Interactive and static visualization of KGs, ontologies, embeddings, analytics, and temporal graphs |
+| [`explorer/`](explorer/) | **Semantica Knowledge Explorer** — React 19 + Sigma.js UI: graph canvas, decision viewer, causal chains, entity resolution, ontology browser, and registry audit log |
 | `semantica.seed` | Seed data management for initial KG construction from CSV, JSON, databases, and APIs |
 | `semantica.core` | Framework orchestration, configuration management, knowledge base construction, plugin system |
 | `semantica.llms` | LLM provider integrations — Groq, OpenAI, Novita AI, HuggingFace, LiteLLM |
@@ -643,16 +942,13 @@ if result.valid:
 - **`semantica.triplet_store`** — Blazegraph, Jena, RDF4J; SPARQL, bulk loading, SKOS helpers
 - **`semantica.visualization`** — KG, ontology, embedding, and temporal graph visualization
 - **`semantica.llms`** — Groq, OpenAI, Novita AI, HuggingFace, LiteLLM
-
-
----
-
-## 🔌 Integrations
+- **[`explorer/`](explorer/)** — **Semantica Knowledge Explorer** — browser UI for live graph inspection, decisions, entity resolution, and ontology browsing (`npm run dev` in `explorer/`)
 
 ### Graph Databases
-- **AWS Neptune** — Amazon Neptune with IAM authentication
+- **Neo4j** — Cypher queries via `semantica.graph_store`
+- **FalkorDB** — native support; `DecisionQuery` and `CausalChainAnalyzer` work directly with FalkorDB row/header shapes
 - **Apache AGE** — PostgreSQL + openCypher via SQL
-- **FalkorDB** — native support for decision queries and causal analysis
+- **AWS Neptune** — Amazon Neptune with IAM authentication
 
 ### Vector Databases
 - **FAISS** — built-in, zero extra dependencies
@@ -668,22 +964,15 @@ if result.valid:
 - **Databases** — SQL via `DBIngestor`
 - **Snowflake** — table/query ingestion, pagination, password/key-pair/OAuth/SSO auth · `pip install semantica[db-snowflake]`
 - **Docling** — advanced table and layout extraction (PDF, DOCX, PPTX, XLSX)
+- **Email** — inbox ingestion via `EmailIngestor`
+- **Repositories** — Git repo ingestion for code graph construction
 
 ### LLM Providers
 - **LiteLLM** — 100+ models: OpenAI, Anthropic, Cohere, Mistral, Ollama, Azure, AWS Bedrock, and more
 - **Novita AI** — OpenAI-compatible (`deepseek/deepseek-v3.2` and more) · set `NOVITA_API_KEY`
-
-### Agentic Frameworks
-Semantica complements — not replaces — LangChain, LlamaIndex, AutoGen, CrewAI, Google ADK, and more.
-
-> **Agno — First-Class Integration** · `pip install semantica[agno]`
->
-> Five ready-to-use Agno components:
-> - `AgnoContextStore` — graph-backed agent memory
-> - `AgnoKnowledgeGraph` — multi-hop GraphRAG knowledge base
-> - `AgnoDecisionKit` — 6 decision-intelligence tools
-> - `AgnoKGToolkit` — 7 KG pipeline tools
-> - `AgnoSharedContext` — shared context graph for multi-agent teams
+- **Groq** — ultra-low latency inference · set `GROQ_API_KEY`
+- **HuggingFace** — local and hosted models via `HuggingFaceProvider`
+- **Ollama** — local models including remote server support
 
 ---
 

RELEASE_NOTES.md

@@ -1,282 +0,0 @@
-# Semantica v0.3.0 — Release Notes
-
-**Released:** 2026-03-10
-**PyPI:** `pip install semantica`
-**Tag:** [v0.3.0](https://github.com/Hawksight-AI/semantica/releases/tag/v0.3.0)
-**Classification:** Production/Stable
-
-> First stable, full public release of Semantica. Covers everything shipped across three release stages: 0.3.0-alpha (2026-02-19), 0.3.0-beta (2026-03-07), and 0.3.0 stable (2026-03-10).
-
----
-
-## Contributors
-
-| Contributor | Role |
-|------------|------|
-| [@KaifAhmad1](https://github.com/KaifAhmad1) | Lead maintainer — context graph, decision intelligence, KG algorithms, semantic extraction, pipeline, provenance, bug fixes, release management |
-| [@ZohaibHassan16](https://github.com/ZohaibHassan16) | Deduplication v2 suite (candidate generation, two-stage scoring, semantic dedup), incremental/delta processing, benchmark suite |
-| [@Sameer6305](https://github.com/Sameer6305) | Apache AGE backend, PgVector store, Snowflake connector, Apache Arrow export |
-| [@tibisabau](https://github.com/tibisabau) | ArangoDB AQL export, Apache Parquet export |
-| [@d4ndr4d3](https://github.com/d4ndr4d3) | ResourceScheduler deadlock fix |
-
----
-
-## v0.3.0 — Stable (2026-03-10)
-
-### Context Graph Feature Completeness
-
-**Temporal Validity Windows** (by @KaifAhmad1)
-
-Nodes and edges now carry first-class `valid_from` / `valid_until` ISO datetime fields. These are stored directly on `ContextNode` and `ContextEdge` dataclasses — not in metadata — and survive full serialisation round-trips through `save_to_file()` / `load_from_file()` and `to_dict()` / `from_dict()`.
-
-- `ContextNode.is_active(at_time=None)` and `ContextEdge.is_active(at_time=None)` — returns `True` if the node/edge is live at the given time (defaults to now). Handles both tz-aware and tz-naive datetime inputs correctly.
-- `ContextGraph.find_active_nodes(node_type=None, at_time=None)` — filters the entire graph and returns only nodes within their validity window.
-- `add_node(valid_from=..., valid_until=...)` and `add_edge(valid_from=..., valid_until=...)` — pass validity fields directly in the call signature.
-- Bug fix: `is_active()` previously crashed with `TypeError` when passed a tz-aware `datetime` (e.g. `datetime.now(timezone.utc)`). Fixed by normalising all inputs to tz-naive UTC via a new `_parse_iso_dt()` helper.
-- Bug fix: validity fields were silently lost in `add_nodes()`, `add_edges()`, `to_dict()`, and `from_dict()`. All four paths now correctly preserve and restore them.
-
-**Weighted Multi-Hop BFS** (by @KaifAhmad1)
-
-`ContextGraph.get_neighbors(node_id, hops=1, relationship_types=None, min_weight=0.0)` now accepts a `min_weight` threshold. Any edge with weight below the threshold is skipped during BFS traversal, allowing callers to confine multi-hop queries to high-confidence causal links. Default `0.0` is fully backward-compatible.
-
-**Cross-Graph Navigation** (by @KaifAhmad1)
-
-Separate `ContextGraph` instances can now be linked and navigated between — hierarchically, like separate knowledge domains that reference each other.
-
-- `link_graph(other_graph, source_node_id, target_node_id, link_type="CROSS_GRAPH") -> str` — creates a navigable bridge and returns a `link_id`. Records a dedicated `"cross_graph_link"` typed marker node internally (not a phantom `"entity"`) and a marker edge.
-- `navigate_to(link_id) -> (other_graph, target_node_id)` — jumps to the target graph and entry node for a given link.
-- `graph_id` field — each `ContextGraph` now carries a stable UUID so instances can identify each other across save/load.
-- `save_to_file()` — now writes a `links` section alongside nodes and edges, containing `link_id`, `source_node_id`, `target_node_id`, and `other_graph_id` for every cross-graph link.
-- `load_from_file()` — restores `graph_id` and populates `_unresolved_links` from the `links` section.
-- `resolve_links(registry: Dict[str, ContextGraph]) -> int` — reconnects unresolved links post-load. Pass `{graph_id: graph_instance}` for each linked graph; returns the count of successfully resolved links. `navigate_to()` raises a clear `KeyError` with a `resolve_links()` hint if called before resolution.
-- Bug fix: the previous implementation auto-created the synthetic marker target as an `"entity"` node (phantom pollution). Fixed by explicitly pre-creating a `"cross_graph_link"` typed `ContextNode` before the marker edge.
-- 14 new tests in `tests/context/test_cross_graph_navigation.py` covering all scenarios including full save/load round-trips with partial registry resolution.
-
-**Other Fixes** (by @KaifAhmad1)
-
-- `PipelineBuilder.add_step()` return type annotation corrected from `"PipelineBuilder"` to `"PipelineStep"` — the implementation was already correct; only the annotation and docstring were stale.
-- `test_hybrid_search_performance` timing computation fixed — now accumulates a true `search_times` list instead of reusing the last loop iteration's `start_time`; threshold relaxed to `< 5.0s` for real `sentence-transformers` (384-dim) latency on development machines.
-
-**Test Coverage Added**
-
-- 14 cross-graph navigation tests (`tests/context/test_cross_graph_navigation.py`)
-- **Total: 335 context tests, 886+ tests across all modules — 0 failures**
-
----
-
-## v0.3.0-beta — Beta (2026-03-07)
-
-### Semantic Extraction Fixes
-
-**Multi-Founder LLM Extraction & Reasoner Inference Fix** (PR #354, by @KaifAhmad1)
-
-- `_parse_relation_result` in `methods.py` — unmatched subjects/objects now produce a synthetic `UNKNOWN` entity instead of silently dropping the relation. All co-founders returned by the LLM are preserved in the output.
-- Duplicate relation fix — an orphaned legacy block that appended every relation twice has been removed.
-- `extraction_method` parameter added — typed extraction paths now correctly record `"llm_typed"` in relation metadata instead of `"llm"`.
-- `_match_pattern` in `reasoner.py` rewritten — splits patterns on `?var` placeholders first, then escapes only literal segments. Pre-bound variables resolve to exact literals, repeated variables use backreferences, non-greedy `.+?` prevents over-consumption of separators.
-- Added `tests/reasoning/test_reasoner.py` (4 tests) and `tests/semantic_extract/test_relation_extractor.py` (6 tests).
-
-**TTL Export Alias Fix** (PR #355, by @KaifAhmad1)
-
-- `RDFExporter` now accepts `"ttl"`, `"nt"`, `"xml"`, `"rdf"`, and `"json-ld"` as format aliases in `export_to_rdf()`. Aliases resolve before format validation — zero public API changes.
-- Added `tests/export/test_rdf_exporter.py` (8 tests).
-
-### Incremental / Delta Processing
-
-**Native Delta Computation** (PR #349, by @ZohaibHassan16, reviewed and fixed by @KaifAhmad1)
-
-- Native SPARQL-based diff between graph snapshots — only changed triples flow through the pipeline.
-- `delta_mode` configuration in `PipelineBuilder` for near-real-time workloads.
-- Version snapshot management with graph URI tracking and metadata storage.
-- `prune_versions()` for automatic snapshot retention cleanup.
-- Bug fixes: corrected SPARQL variable order, fixed class references, resolved duplicate dictionary keys.
-
-### Deduplication v2
-
-**Candidate Generation v2** (PR #338, by @ZohaibHassan16)
-
-- New opt-in strategies: `blocking_v2` and `hybrid_v2`, replacing O(N²) pair enumeration.
-- Multi-key blocking with normalised token prefixes, type-aware keys, and optional phonetic (Soundex) blocking.
-- Deterministic `max_candidates_per_entity` budgeting with stable sorting.
-- **63.6% faster** in worst-case scenarios (0.259s → 0.094s for 100 entities).
-
-**Two-Stage Scoring Prefilter** (PR #339, by @ZohaibHassan16)
-
-- Fast gates for type mismatch, name-length ratio, and token overlap eliminate expensive semantic scoring for obvious non-matches.
-- Configurable thresholds: `min_length_ratio`, `min_token_overlap_ratio`, `required_shared_token`.
-- **18–25% faster** batch processing with prefilter enabled (`prefilter_enabled=False` by default).
-
-**Semantic Relationship Deduplication v2** (PR #340, by @ZohaibHassan16, fixes by @KaifAhmad1)
-
-- Canonicalisation engine with predicate synonym mapping (`works_for` → `employed_by`).
-- O(1) hash matching for exact canonical signatures.
-- Weighted scoring: 60% predicate + 40% object composition with explainable `semantic_match_score`.
-- **6.98x faster** than legacy mode (83ms vs 579ms).
-- `dedup_triplets()` infinite recursion bug fixed; function is now a first-class API in `methods.py`.
-
-**Deduplication v2 Migration Guide** (PR #344, by @ZohaibHassan16, fixes by @KaifAhmad1)
-
-- Comprehensive `MIGRATION_V2.md` documenting all v2 strategies with code examples.
-- Full backward compatibility maintained — legacy mode remains the default.
-
-### Export Formats
-
-**ArangoDB AQL Export** (PR #342, by @tibisabau)
-
-- Full AQL INSERT statement generation for vertices and edges.
-- Configurable collection names with validation and sanitisation; batch processing (default: 1000).
-- `export_arango()` convenience function; `.aql` auto-detection in the unified exporter.
-- 17 tests, 100% pass rate.
-
-**Apache Parquet Export** (PR #343, by @tibisabau)
-
-- Columnar storage format with configurable compression: snappy, gzip, brotli, zstd, lz4, none.
-- Explicit Apache Arrow schemas with type safety; field normalisation for varied naming conventions.
-- `export_parquet()` convenience function; `.parquet` auto-detection.
-- Analytics-ready for pandas, Spark, Snowflake, BigQuery, Databricks.
-- 25 tests, 100% pass rate.
-
-### Bug Fixes & Test Suite Stabilisation
-
-**Test Suite Fixes** (by @KaifAhmad1)
-
-Context module:
-- `retrieve_decision_precedents` — gated entity extraction on `use_hybrid_search=True` correctly.
-- `_extract_entities_from_query` — now uses `word[0].isupper()` to capture camelCase identifiers like `CreditCard`.
-- Added missing `expand_context` (BFS traversal) and `_get_decision_query` methods.
-- Fixed `hybrid_retrieval`, `dynamic_context_traversal`, and `multi_hop_context_assembly` for correct single-pass BFS.
-- Fixed `_retrieve_from_vector` fallback to `result["metadata"]["content"]` to prevent empty content and negative re-ranking scores.
-
-KG module:
-- `calculate_pagerank` — added `alpha`/`max_iter` aliases; return format changed to `{"centrality": scores, "rankings": sorted_list}`.
-- `community_detector._to_networkx` — now returns a NetworkX graph directly when one is passed (previously lost all edges).
-- Added 9 domain-specific tracking methods to `AlgorithmTrackerWithProvenance`.
-- Created `provenance_tracker.py` with `ProvenanceTracker` (`track_entity`, `get_all_sources`, `clear`).
-
-Pipeline module:
-- Retry loop fixed — now correctly iterates to `max_retries`.
-- `RecoveryAction` dataclass and `handle_failure(error, policy, retry_count)` added with LINEAR, EXPONENTIAL, and FIXED strategies.
-- `add_step()` fixed to return the created `PipelineStep`.
-- `validate` added as alias for `validate_pipeline` in `PipelineValidator`.
-
-Other:
-- Fixed `NameError` for missing `Type` import in `utils/helpers.py`.
-- Vector store performance threshold relaxed (100ms → 500ms per decision for development machines).
-- Windows cp1252 encoding fix in test files (emoji → ASCII).
-- `ProvenanceTracker` added to `semantica/kg/__init__.py` exports.
-
-**Results: ~840 tests passing, 36 skipped (external services), 0 failed**
-
----
-
-## v0.3.0-alpha — Alpha (2026-02-19)
-
-### Context & Decision Intelligence
-
-**Context Engineering Enhancement** (PR #307, by @KaifAhmad1)
-
-The foundational 0.3.0 feature — complete overhaul of the context module for production-grade decision intelligence:
-
-- Full decision lifecycle: `record_decision()` → `add_decision()` → `add_causal_relationship()` → `trace_decision_chain()` → `analyze_decision_impact()` → `analyze_decision_influence()` → `find_similar_decisions()`
-- `AgentContext` unified wrapper with granular feature flags: `decision_tracking`, `kg_algorithms`, `graph_expansion`; methods: `store()`, `retrieve()`, `get_conversation_history()`, `get_statistics()`, `capture_cross_system_inputs()`
-- `AgentMemory` with working, conversation, and long-term memory tiers
-- `PolicyEngine` with versioned policy nodes, compliance checking (`check_decision_rules()`), and `PolicyException` model
-- Hybrid precedent search combining vector, structural, and category similarity with configurable weights
-- Decision influence analysis via centrality measures and causal chain tracking
-- GraphStore validation preventing runtime failures; secure logging
-- 9 critical bug fixes across logging, security, audit trails, API compatibility, Cypher queries, centrality access, validation
-
-**Context Decision Tracking Fixes** (PR #315, by @KaifAhmad1)
-
-- Fixed empty/None decision ID handling in `add_decision()`
-- Fixed None metadata handling preventing `TypeError`
-- Fixed causal chain depth logic and node exclusion
-- Fixed nonexistent node handling in `add_causal_relationship()`
-- Fixed precedent search direction in `find_precedents()`
-- Added missing `properties` field in `to_dict()`; added `from_dict()` method
-- Fixed UUID generation across all decision models
-- All 71 context tests passing
-
-### Knowledge Graph Algorithms
-
-**Improved Graph Algorithms** (PR #292, by @KaifAhmad1)
-
-- 30+ graph algorithms across 7 categories
-- Node embeddings: Node2Vec, DeepWalk, Word2Vec via `NodeEmbedder`
-- Similarity: cosine, Euclidean, Manhattan, Correlation via `SimilarityCalculator`
-- Path finding: Dijkstra, A*, BFS, K-shortest paths via `PathFinder`
-- Link prediction: preferential attachment, Jaccard, Adamic-Adar via `LinkPredictor`
-- Centrality: degree, betweenness, closeness, PageRank via `CentralityAnalyzer`
-- Community detection: Louvain, Leiden, label propagation via `CommunityDetector`
-- Connectivity: components, bridges, density via `ConnectivityAnalyzer`
-- `GraphBuilderWithProvenance` and `AlgorithmTrackerWithProvenance` with full execution metadata
-
-**Improved Vector Store for Decision Tracking** (PR #293, by @KaifAhmad1)
-
-- `DecisionEmbeddingPipeline` with semantic and structural embeddings
-- `HybridSimilarityCalculator` with configurable weights (semantic: 0.7, structural: 0.3)
-- `ContextRetriever` with multi-hop reasoning
-- Convenience API: `quick_decision()`, `find_precedents()`, `explain()`, `similar_to()`, `batch_decisions()`, `filter_decisions()`
-- 34+ tests; performance: 0.028s per decision, 0.031s search, ~0.8KB memory per decision
-
-### Graph Database Backends
-
-**Apache AGE Backend Security Fixes** (PR #311, by @Sameer6305, fixes by @KaifAhmad1)
-
-- `AgeStore` class with `GraphStore` API compatibility (openCypher via SQL on PostgreSQL)
-- SQL injection vulnerabilities fixed with input validation
-- psycopg2-binary dependency and migration guide added
-- Fixed parameter replacement and test mock leakage
-
-**PgVector Store Support** (PR #303, by @Sameer6305, @KaifAhmad1)
-
-- Native PostgreSQL vector storage using the pgvector extension
-- Multiple distance metrics: cosine, L2/Euclidean, inner product
-- HNSW and IVFFlat indexing for approximate nearest neighbour search
-- JSONB metadata storage with flexible filtering; batch operations
-- Connection pooling with psycopg3/psycopg2 fallback
-- SQL injection protection via `psycopg_sql.SQL()`; idempotent index and table management
-- 36+ tests with Docker integration
-
-### Infrastructure
-
-**ResourceScheduler Deadlock Fix** (PR #299, #301, by @d4ndr4d3, @KaifAhmad1)
-
-- Replaced `threading.Lock()` with `threading.RLock()` to fix nested lock acquisition deadlock in `allocate_resources()`
-- Added `ValidationError` when no resources can be allocated
-- Progress tracking updates moved outside lock scope
-- 6 regression tests for deadlock prevention
-
-**Security Configuration** (by @KaifAhmad1)
-
-- Dependabot bi-weekly security updates with manual review
-- Automated security scans (Bandit, Safety, Semgrep) on schedule
-- Security-critical package grouping; zero auto-merge policy
-
----
-
-## Summary by the Numbers
-
-| Metric | Value |
-|--------|-------|
-| Total tests passing | **886+** |
-| Test failures | **0** |
-| Context tests | 335 |
-| KG tests | ~430 |
-| Semantic extraction tests | 70 (9 skipped — external LLM APIs) |
-| Reasoning tests | 19 |
-| Real-world scenario tests | 85 |
-| PyPI classifier | Production/Stable |
-| Python support | 3.8 – 3.12 |
-
----
-
-## Upgrade
-
-```bash
-pip install --upgrade semantica
-```
-
-No breaking changes. All new parameters have safe defaults and all new methods are additive.
-
-See [CHANGELOG.md](CHANGELOG.md) for the full line-by-line diff.

STRATEGIES_SUMMARY.md

@@ -1,105 +0,0 @@
-# Deduplication & Conflict Resolution Strategies Summary
-
-## Quick Reference by Use Case
-
-| Use Case | Deduplication Method | Merge Strategy | Conflict Detection | Conflict Resolution |
-|----------|---------------------|----------------|-------------------|---------------------|
-| **Finance** |
-| `01_Financial_Data_Integration_MCP` | `DuplicateDetector` (incremental) | `keep_highest_confidence` | `temporal` | `most_recent` |
-| `02_Fraud_Detection` | `ClusterBuilder` (graph_based) | `merge_all` | `logical` | `expert_review` |
-| **Biomedical** |
-| `01_Drug_Discovery_Pipeline` | `EntityResolver` (semantic) | - | `relationship` | `voting` |
-| `02_Genomic_Variant_Analysis` | `DuplicateDetector` (group) | `keep_most_complete` | `value` | `credibility_weighted` |
-| **Cybersecurity** |
-| `01_Real_Time_Anomaly_Detection` | `DuplicateDetector` (pairwise) | `keep_first` | `entity` | `first_seen` |
-| `02_Threat_Intelligence_Hybrid_RAG` | `EntityResolver` (exact) | - | `type` | `highest_confidence` |
-| **Blockchain** |
-| `01_DeFi_Protocol_Intelligence` | `DuplicateDetector` (group) | `keep_last` | `relationship` | `voting` |
-| `02_Transaction_Network_Analysis` | `ClusterBuilder` (hierarchical) | `keep_most_complete` | `temporal` | `most_recent` |
-| **Intelligence** |
-| `01_Criminal_Network_Analysis` | `EntityResolver` (fuzzy) | - | `value` | `credibility_weighted` |
-| `02_Intelligence_Analysis_Orchestrator_Worker` | `DuplicateDetector` (batch) | `merge_all` | `entity` | `voting` |
-| **Renewable Energy** |
-| `01_Energy_Market_Analysis` | `DuplicateDetector` (pairwise) | `keep_highest_confidence` | `temporal` | `most_recent` |
-| **Supply Chain** |
-| `01_Supply_Chain_Data_Integration` | `DuplicateDetector` (incremental) | `keep_most_complete` | `value` | `credibility_weighted` |
-
----
-
-## Strategy Rationale by Domain
-
-### Finance
-- **Financial Data Integration**: Incremental for streaming data; most_recent for time-sensitive financial data
-- **Fraud Detection**: Graph-based clustering for fraud groups; expert_review for fraud assessment
-
-### Biomedical
-- **Drug Discovery**: Semantic matching for drug compounds; voting for research source aggregation
-- **Genomic Variants**: Group method for related variants; credibility weighting for research sources
-
-### Cybersecurity
-- **Real-Time Anomaly**: Pairwise for real-time streams; keep_first for first detection priority
-- **Threat Intelligence**: Exact matching for IOCs; highest_confidence for threat classification
-
-### Blockchain
-- **DeFi Protocols**: Group method for related protocols; keep_last for latest protocol info
-- **Transaction Networks**: Hierarchical clustering for nested groups; temporal for time-sensitive data
-
-### Intelligence
-- **Criminal Networks**: Fuzzy matching for intelligence data; credibility weighting for intelligence sources
-- **Intelligence Analysis**: Batch for multi-source integration; merge_all to combine all intelligence sources
-
-### Renewable Energy
-- **Energy Markets**: Pairwise for real-time market data; most_recent for time-sensitive energy data
-
-### Supply Chain
-- **Supply Chain Integration**: Incremental for continuous updates; credibility weighting for supply chain sources
-
----
-
-## Method Distribution
-
-### Deduplication Methods (9 total)
-- `pairwise`: 2 notebooks (real-time processing)
-- `batch`: 3 notebooks (large datasets)
-- `incremental`: 2 notebooks (streaming/continuous)
-- `group`: 2 notebooks (related entities)
-- `graph_based` (ClusterBuilder): 2 notebooks (interconnected entities)
-- `hierarchical` (ClusterBuilder): 1 notebook (nested groups)
-- `exact` (EntityResolver): 1 notebook (exact matching)
-- `semantic` (EntityResolver): 2 notebooks (semantic similarity)
-- `fuzzy` (EntityResolver): 1 notebook (fuzzy matching)
-
-### Merge Strategies (5 total)
-- `keep_first`: 1 notebook (first detection priority)
-- `keep_last`: 1 notebook (latest information)
-- `keep_most_complete`: 5 notebooks (preserve all details)
-- `keep_highest_confidence`: 2 notebooks (most reliable data)
-- `merge_all`: 3 notebooks (combine all information)
-
-### Conflict Detection Methods (6 total)
-- `value`: 4 notebooks (property value conflicts)
-- `type`: 2 notebooks (type/classification conflicts)
-- `entity`: 2 notebooks (entity-wide conflicts)
-- `relationship`: 3 notebooks (relationship conflicts)
-- `temporal`: 3 notebooks (time-sensitive conflicts)
-- `logical`: 2 notebooks (logical inconsistencies)
-
-### Conflict Resolution Strategies (6 total)
-- `voting`: 5 notebooks (majority vote)
-- `credibility_weighted`: 4 notebooks (source credibility)
-- `most_recent`: 3 notebooks (latest data)
-- `first_seen`: 1 notebook (first detection)
-- `highest_confidence`: 2 notebooks (most confident)
-- `expert_review`: 1 notebook (manual review)
-
----
-
-## Key Patterns
-
-1. **Real-Time Systems**: Use `pairwise` + `keep_first` + `first_seen`
-2. **Time-Sensitive Data**: Use `temporal` + `most_recent`
-3. **Multi-Source Integration**: Use `batch` + `merge_all` + `voting`
-4. **Medical/Research**: Use `credibility_weighted` for authoritative sources
-5. **Fraud/Security**: Use `graph_based` + `logical` + `expert_review`
-6. **Exact Matching Required**: Use `exact` strategy (IOCs, identifiers)
-

explorer/README.md

@@ -0,0 +1,197 @@
+# Semantica Knowledge Explorer
+
+A real-time visual interface for exploring knowledge graphs, decision intelligence, entity resolution, ontologies, and graph analytics built on top of the [Semantica](https://github.com/Hawksight-AI/semantica) library.
+
+---
+
+## Requirements
+
+| Dependency | Minimum Version |
+|---|---|
+| Node.js | 18.x or higher (20.x recommended) |
+| npm | 9.x or higher |
+| Python | 3.8+ |
+| Semantica backend | running on `http://127.0.0.1:8000` |
+
+Check your versions:
+
+```bash
+node --version
+npm --version
+python --version
+```
+
+---
+
+## Quick Start (Local Development)
+
+### 1. Clone the repository
+
+```bash
+git clone https://github.com/Hawksight-AI/semantica.git
+cd semantica
+```
+
+### 2. Install the Semantica Python package
+
+```bash
+pip install semantica
+```
+
+Or install from source if you have the repo:
+
+```bash
+pip install -e .
+```
+
+### 3. Start the Semantica backend
+
+The Explorer proxies all `/api` and `/ws` requests to `http://127.0.0.1:8000`. The backend must be running before you open the UI.
+
+```bash
+# From the repo root
+python -m semantica.server
+```
+
+The backend starts on port **8000** by default. Keep this terminal open.
+
+### 4. Install frontend dependencies
+
+Open a second terminal:
+
+```bash
+cd explorer
+npm install
+```
+
+> **Note:** This project uses Vite 5 and requires **Node 18+**. If you are on Node 16 or earlier, upgrade first.
+
+### 5. Start the dev server
+
+```bash
+npm run dev
+```
+
+Vite starts on **http://localhost:5173** by default. Open that URL in your browser.
+
+---
+
+## What you should see
+
+The Explorer opens with a persistent left sidebar and six workspace tabs:
+
+| Tab | What it shows |
+|---|---|
+| **Knowledge Graph** | Interactive Sigma.js canvas — nodes, edges, zoom, ForceAtlas2 layout |
+| **Timeline** | Temporal event scrubber over the graph |
+| **Decisions** | Causal chain viewer with outcome badges and decision filter |
+| **Registry** | Live audit log of every graph mutation (add-node, add-edge, etc.) |
+| **Entity Resolution** | Duplicate detection and entity merge workflow |
+| **KG Overview** | Aggregate stats, community breakdown, centrality heatmap |
+| **Ontology** | SKOS/OWL vocabulary hierarchy and schema summary |
+
+---
+
+## Project structure
+
+```
+explorer/
+├── src/
+│   ├── App.tsx                        # Root layout, tab routing, workspace wiring
+│   ├── index.css                      # Global resets, fonts, keyframe animations
+│   ├── store/
+│   │   └── registryStore.ts           # Pub/sub audit registry (no external state lib)
+│   └── workspaces/
+│       ├── GraphWorkspace/            # Sigma.js graph canvas + inspector panel
+│       ├── DecisionWorkspace/         # Causal flow diagram + decision list
+│       ├── TimelineWorkspace/         # vis-timeline temporal scrubber
+│       ├── ManageWorkspace/           # Registry, KG Overview, Ontology tabs
+│       └── EnrichWorkspace/           # Entity resolution tab
+├── index.html
+├── vite.config.ts                     # Dev proxy → 127.0.0.1:8000, build → ../semantica/static
+└── package.json
+```
+
+---
+
+## Available scripts
+
+Run these from inside the `explorer/` directory:
+
+```bash
+# Start the dev server with hot module replacement
+npm run dev
+
+# Type-check and build a production bundle into ../semantica/static
+npm run build
+
+# Preview the production build locally
+npm run preview
+
+# Run ESLint over all source files
+npm run lint
+
+# Run the graph store multi-edge unit tests
+npm run test:graph-store
+```
+
+---
+
+## API & WebSocket proxy
+
+During development, Vite forwards requests automatically — no CORS configuration needed:
+
+| Pattern | Forwarded to |
+|---|---|
+| `/api/*` | `http://127.0.0.1:8000/api/*` |
+| `/ws` | `ws://127.0.0.1:8000/ws` |
+
+If you run the backend on a different port, update `server.proxy` in [vite.config.ts](vite.config.ts).
+
+---
+
+## Production build
+
+```bash
+cd explorer
+npm run build
+```
+
+The compiled assets are written to `../semantica/static/`. The Semantica Python server serves this folder automatically at its root URL — no separate web server needed.
+
+---
+
+## Troubleshooting
+
+**Blank graph / no data loads**
+- Make sure the Semantica backend is running (`python -m semantica.server`) before opening the UI.
+- Check the browser console for failed `/api/graph` requests — the proxy target may need updating in `vite.config.ts`.
+
+**`npm install` fails or hangs**
+- Ensure you are using **Node 18 or 20**. Node 16 and Vite 5 are incompatible.
+- Delete `node_modules/` and `package-lock.json`, then re-run `npm install`.
+
+**Port 5173 already in use**
+- Vite will automatically try the next available port and print it in the terminal. Use that URL instead.
+
+**WebSocket not connecting (real-time mutations not appearing)**
+- Confirm the backend exposes a `/ws` WebSocket endpoint.
+- Check browser DevTools → Network → WS tab for the connection status.
+
+---
+
+## Tech stack
+
+- **React 19** + TypeScript (strict `noUnusedLocals`)
+- **Vite 5** with `babel-plugin-react-compiler`
+- **Sigma.js 3** + **Graphology** — graph rendering and in-memory graph store
+- **ForceAtlas2** — physics-based layout worker
+- **@tanstack/react-query** — data fetching for ontology and vocab tabs
+- **vis-timeline** — temporal event visualization
+- **lucide-react** — icon set
+
+---
+
+## Contributing
+
+See the root [CONTRIBUTING.md](../CONTRIBUTING.md) and open issues on the main [Semantica repository](https://github.com/Hawksight-AI/semantica).

explorer/index.html

@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>semantica-explorer</title>
+    <title>Semantica Knowledge Explorer</title>
   </head>
   <body>
     <div id="root"></div>

explorer/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "semantica-explorer",
+  "name": "semantica-knowledge-explorer",
   "private": true,
   "version": "0.0.0",
   "type": "module",
@@ -33,12 +33,11 @@
   "devDependencies": {
     "@babel/core": "^7.29.0",
     "@eslint/js": "^9.39.4",
-    "@rolldown/plugin-babel": "^0.2.1",
     "@types/babel__core": "^7.20.5",
     "@types/node": "^24.12.0",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^6.0.1",
+    "@vitejs/plugin-react": "^4.3.0",
     "babel-plugin-react-compiler": "^1.0.0",
     "eslint": "^9.39.4",
     "eslint-plugin-react-hooks": "^7.0.1",
@@ -46,6 +45,6 @@
     "globals": "^17.4.0",
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.57.0",
-    "vite": "^8.0.1"
+    "vite": "^5.4.0"
   }
 }

explorer/src/App.tsx

@@ -10,11 +10,16 @@ const LineageDiagram = lazy(() => import('./workspaces/LineageWorkspace/LineageD
 const ReasoningWorkspace = lazy(() => import('./workspaces/ReasoningWorkspace').then((module) => ({ default: module.ReasoningWorkspace })));
 const SparqlWorkspace = lazy(() => import('./workspaces/SparqlWorkspace/SparqlWorkspace').then((module) => ({ default: module.SparqlWorkspace })));
 const VocabularyWorkspace = lazy(() => import('./workspaces/VocabularyWorkspace/VocabularyWorkspace').then((module) => ({ default: module.VocabularyWorkspace })));
+const RegistryTab = lazy(() => import('./workspaces/EnrichWorkspace/RegistryTab').then((module) => ({ default: module.RegistryTab })));
+const EntityResolutionTab = lazy(() => import('./workspaces/EnrichWorkspace/EntityResolutionTab').then((module) => ({ default: module.EntityResolutionTab })));
+const KGOverviewTab = lazy(() => import('./workspaces/ManageWorkspace/KGOverviewTab').then((module) => ({ default: module.KGOverviewTab })));
+const OntologySummaryTab = lazy(() => import('./workspaces/ManageWorkspace/OntologySummaryTab').then((module) => ({ default: module.OntologySummaryTab })));
 
 type WorkspaceId = 'explore' | 'analyze' | 'decisions' | 'enrich' | 'manage';
 type ExploreView = 'graph' | 'vocabulary';
 type AnalyzeView = 'sparql' | 'reasoning';
-type EnrichView = 'import' | 'merge';
+type EnrichView = 'import' | 'merge' | 'registry' | 'resolve';
+type ManageView = 'lineage' | 'kg-overview' | 'ontology';
 
 type NavItem = {
   id: WorkspaceId;
@@ -26,7 +31,7 @@ type NavItem = {
 const queryClient = new QueryClient();
 
 const navItems: NavItem[] = [
-  { id: 'explore', label: 'Explore', hint: 'Graph and vocabulary browsing', icon: Database },
+  { id: 'explore', label: 'Knowledge Explorer', hint: 'Graph and vocabulary browsing', icon: Database },
   { id: 'analyze', label: 'Analyze', hint: 'Query and inspect the dataset', icon: FileSearch },
   { id: 'decisions', label: 'Decisions', hint: 'Decision chains and precedent review', icon: Scale },
   { id: 'enrich', label: 'Enrich', hint: 'Import, export, and merge workflows', icon: GitBranchPlus },
@@ -275,19 +280,21 @@ function WorkspaceShell({
   subtitle,
   tabs,
   compact = false,
+  kicker = 'Workspace',
   children,
 }: {
   title: string;
   subtitle?: string;
   tabs?: ReactNode;
   compact?: boolean;
+  kicker?: string;
   children: ReactNode;
 }) {
   return (
     <section className="workspace-shell">
       <header className={`workspace-header${compact ? " workspace-header--compact" : ""}`}>
         <div className="workspace-header-main">
-          <div className="workspace-kicker">Workspace</div>
+          <div className="workspace-kicker">{kicker}</div>
           <div className="workspace-title-block">
             <h1 className="workspace-title">{title}</h1>
             {subtitle ? <div className="workspace-subtitle">{subtitle}</div> : null}
@@ -309,6 +316,7 @@ export default function App() {
   const [exploreView, setExploreView] = useState<ExploreView>('graph');
   const [analyzeView, setAnalyzeView] = useState<AnalyzeView>('reasoning');
   const [enrichView, setEnrichView] = useState<EnrichView>('import');
+  const [manageView, setManageView] = useState<ManageView>('lineage');
 
   const renderWorkspace = () => {
     if (activeWorkspace === 'explore') {
@@ -316,6 +324,7 @@ export default function App() {
         <WorkspaceShell
           title="Explore"
           subtitle={exploreView === 'graph' ? undefined : "Browse the graph and switch views without leaving the workspace."}
+          kicker={exploreView === 'graph' ? 'Graph Studio' : 'Vocabulary Browser'}
           compact
           tabs={
             <>
@@ -340,6 +349,7 @@ export default function App() {
         <WorkspaceShell
           title="Analyze"
           subtitle="Query the active graph and test inference rules."
+          kicker={analyzeView === 'reasoning' ? 'Reasoning Engine' : 'SPARQL Query'}
           tabs={
             <>
               <button className="workspace-tab" data-active={analyzeView === 'reasoning'} onClick={() => setAnalyzeView('reasoning')}>
@@ -363,6 +373,7 @@ export default function App() {
         <WorkspaceShell
           title="Decisions"
           subtitle="Inspect decision chains, causal context, and precedent matches."
+          kicker="Decision Intelligence"
         >
           <Suspense fallback={<WorkspaceFallback />}>
             <DecisionWorkspace />
@@ -375,7 +386,8 @@ export default function App() {
       return (
         <WorkspaceShell
           title="Enrich"
-          subtitle="Import, export, and reconcile graph entities."
+          subtitle="Import, export, reconcile, and audit graph entities."
+          kicker="Knowledge Audit"
           tabs={
             <>
               <button className="workspace-tab" data-active={enrichView === 'import'} onClick={() => setEnrichView('import')}>
@@ -384,11 +396,20 @@ export default function App() {
               <button className="workspace-tab" data-active={enrichView === 'merge'} onClick={() => setEnrichView('merge')}>
                 Diff and Merge
               </button>
+              <button className="workspace-tab" data-active={enrichView === 'resolve'} onClick={() => setEnrichView('resolve')}>
+                Entity Resolution
+              </button>
+              <button className="workspace-tab" data-active={enrichView === 'registry'} onClick={() => setEnrichView('registry')}>
+                Registry
+              </button>
             </>
           }
         >
           <Suspense fallback={<WorkspaceFallback />}>
-            {enrichView === 'import' ? <ImportExportWorkspace /> : <DiffMergeWorkspace />}
+            {enrichView === 'import' ? <ImportExportWorkspace /> :
+             enrichView === 'merge' ? <DiffMergeWorkspace /> :
+             enrichView === 'resolve' ? <EntityResolutionTab /> :
+             <RegistryTab />}
           </Suspense>
         </WorkspaceShell>
       );
@@ -397,10 +418,29 @@ export default function App() {
     return (
       <WorkspaceShell
         title="Manage"
-        subtitle="Review provenance, lineage, and governance context."
+        subtitle="Review provenance, lineage, ontology, and governance context."
+        kicker="Graph Governance"
+        tabs={
+          <>
+            <button className="workspace-tab" data-active={manageView === 'lineage'} onClick={() => setManageView('lineage')}>
+              PROV-O Lineage
+            </button>
+            <button className="workspace-tab" data-active={manageView === 'kg-overview'} onClick={() => setManageView('kg-overview')}>
+              KG Overview
+            </button>
+            <button className="workspace-tab" data-active={manageView === 'ontology'} onClick={() => setManageView('ontology')}>
+              Ontology Summary
+            </button>
+          </>
+        }
       >
         <Suspense fallback={<WorkspaceFallback />}>
-          <LineageDiagram />
+          {manageView === 'lineage' ? <LineageDiagram /> :
+           manageView === 'kg-overview' ? <KGOverviewTab /> :
+           <OntologySummaryTab onOpenVocabularyBrowser={() => {
+             setActiveWorkspace('explore');
+             setExploreView('vocabulary');
+           }} />}
         </Suspense>
       </WorkspaceShell>
     );
@@ -411,7 +451,7 @@ export default function App() {
       <style>{shellStyles}</style>
       <div className="app-shell">
         <aside className="app-rail">
-          <div className="brand-pill">SEM</div>
+          <div className="brand-pill" title="Semantica Knowledge Explorer">SKE</div>
           {navItems.map(({ id, label, hint, icon: Icon }) => (
             <button
               key={id}

explorer/src/index.css

@@ -63,3 +63,9 @@ code, pre, .mono {
 .animate-spin {
   animation: spin 1s linear infinite;
 }
+
+/* Skeleton pulse animation for loading placeholders */
+@keyframes skeleton-pulse {
+  0%, 100% { opacity: 0.45; }
+  50%       { opacity: 0.85; }
+}

explorer/src/store/registryStore.ts

@@ -0,0 +1,77 @@
+/**
+ * src/store/registryStore.ts
+ *
+ * Lightweight client-side audit log for all KG / Ontology mutations.
+ * No backend required — events are dispatched by each workspace after
+ * a successful API call or WebSocket mutation.
+ *
+ * Any component can call logEvent() from anywhere (including non-React code).
+ * React components subscribe via the useRegistry() hook.
+ */
+import { useState, useEffect } from "react";
+
+export type RegistryEntryOp =
+  | "import"
+  | "export"
+  | "merge"
+  | "add-node"
+  | "add-edge"
+  | "delete"
+  | "infer"
+  | "vocab-import";
+
+export interface RegistryEntry {
+  id: string;
+  op: RegistryEntryOp;
+  timestamp: Date;
+  summary: string;
+  detail?: Record<string, unknown>;
+}
+
+type Listener = (entries: readonly RegistryEntry[]) => void;
+
+let _entries: RegistryEntry[] = [];
+const _listeners = new Set<Listener>();
+const MAX_ENTRIES = 500;
+
+function _notify(): void {
+  _listeners.forEach((fn) => fn(_entries));
+}
+
+export function logEvent(
+  op: RegistryEntryOp,
+  summary: string,
+  detail?: Record<string, unknown>,
+): void {
+  const entry: RegistryEntry = {
+    id: `${Date.now()}-${Math.random().toString(36).slice(2, 7)}`,
+    op,
+    timestamp: new Date(),
+    summary,
+    detail,
+  };
+  _entries = [entry, ..._entries].slice(0, MAX_ENTRIES);
+  _notify();
+}
+
+export function clearRegistry(): void {
+  _entries = [];
+  _notify();
+}
+
+export function getRegistryEntries(): readonly RegistryEntry[] {
+  return _entries;
+}
+
+export function useRegistry(): readonly RegistryEntry[] {
+  const [snapshot, setSnapshot] = useState<readonly RegistryEntry[]>(_entries);
+  useEffect(() => {
+    // Sync any events that arrived between render and subscribe
+    setSnapshot(_entries);
+    _listeners.add(setSnapshot);
+    return () => {
+      _listeners.delete(setSnapshot);
+    };
+  }, []);
+  return snapshot;
+}

explorer/src/workspaces/DecisionWorkspace/DecisionWorkspace.tsx

@@ -0,0 +1,407 @@
+/**
+ * src/workspaces/DecisionWorkspace/DecisionWorkspace.tsx
+ */
+import { useState, useEffect, useMemo } from "react";
+import { Scale, Search } from "lucide-react";
+
+const THEME_CSS = `
+  .glass-panel {
+    background: linear-gradient(135deg, rgba(13,17,23,0.75), rgba(22,27,34,0.6));
+    backdrop-filter: blur(16px) saturate(1.2);
+    -webkit-backdrop-filter: blur(16px) saturate(1.2);
+    border: 1px solid rgba(88,166,255,0.2);
+    box-shadow: 0 8px 32px rgba(0,0,0,0.5), inset 1px 1px 0 rgba(255,255,255,0.05);
+  }
+
+  @keyframes skeleton-shimmer {
+    0%   { opacity: 0.45; }
+    50%  { opacity: 0.85; }
+    100% { opacity: 0.45; }
+  }
+  .skeleton-item {
+    border-radius: 8px;
+    background: rgba(255,255,255,0.05);
+    animation: skeleton-shimmer 1.4s ease-in-out infinite;
+  }
+`;
+
+type OutcomeKind = "approved" | "rejected" | "deferred" | "pending" | string;
+
+function outcomeStyle(outcome: string): { color: string; bg: string; border: string } {
+  const lower = (outcome ?? "").toLowerCase();
+  if (lower.includes("approv") || lower.includes("accept"))
+    return { color: "#4cc38a", bg: "rgba(76,195,138,0.12)", border: "rgba(76,195,138,0.28)" };
+  if (lower.includes("reject") || lower.includes("denied") || lower.includes("fail"))
+    return { color: "#ff7b72", bg: "rgba(255,123,114,0.12)", border: "rgba(255,123,114,0.28)" };
+  if (lower.includes("defer") || lower.includes("pending") || lower.includes("review"))
+    return { color: "#f2b66d", bg: "rgba(242,182,109,0.12)", border: "rgba(242,182,109,0.28)" };
+  return { color: "#8fa8c6", bg: "rgba(143,168,198,0.08)", border: "rgba(143,168,198,0.18)" };
+}
+
+function OutcomeBadge({ outcome }: { outcome: OutcomeKind }) {
+  const style = outcomeStyle(outcome);
+  return (
+    <span
+      style={{
+        display: "inline-block",
+        padding: "2px 8px",
+        borderRadius: 999,
+        fontSize: 10,
+        fontWeight: 800,
+        letterSpacing: "0.06em",
+        textTransform: "uppercase",
+        color: style.color,
+        background: style.bg,
+        border: `1px solid ${style.border}`,
+      }}
+    >
+      {outcome || "unknown"}
+    </span>
+  );
+}
+
+function SkeletonList() {
+  return (
+    <div style={{ display: "flex", flexDirection: "column", gap: 8 }}>
+      {[1, 2, 3, 4].map((i) => (
+        <div key={i} className="skeleton-item" style={{ height: 62 }} />
+      ))}
+    </div>
+  );
+}
+
+/* ─── Causal Flow Diagram ──────────────────────────────────────────── */
+
+interface ChainStep {
+  id: string;
+  relationship: string;
+  content?: string;
+  type?: string;
+  [key: string]: unknown;
+}
+
+function RelationshipPill({ label }: { label: string }) {
+  return (
+    <div style={{ display: "flex", flexDirection: "column", alignItems: "center", gap: 0, position: "relative", margin: "0 auto" }}>
+      {/* Connector line top */}
+      <div style={{ width: 2, height: 12, background: "rgba(88,166,255,0.25)" }} />
+      {/* Pill */}
+      <div
+        style={{
+          padding: "3px 10px",
+          borderRadius: 999,
+          fontSize: 10,
+          fontWeight: 700,
+          letterSpacing: "0.06em",
+          textTransform: "uppercase",
+          color: "#79c0ff",
+          background: "rgba(88,166,255,0.1)",
+          border: "1px solid rgba(88,166,255,0.22)",
+          whiteSpace: "nowrap",
+          maxWidth: 260,
+          overflow: "hidden",
+          textOverflow: "ellipsis",
+        }}
+        title={label}
+      >
+        {label}
+      </div>
+      {/* Connector line bottom + arrow */}
+      <div style={{ width: 2, height: 10, background: "rgba(88,166,255,0.25)" }} />
+      <div style={{ width: 0, height: 0, borderLeft: "5px solid transparent", borderRight: "5px solid transparent", borderTop: "6px solid rgba(88,166,255,0.4)" }} />
+    </div>
+  );
+}
+
+function ChainNodeCard({ step, index }: { step: ChainStep; index: number }) {
+  const COLORS = ["#3E79F2", "#149287", "#2F9F61", "#555FD6", "#8A56D8", "#B65473", "#C9922E", "#4aa3ff"];
+  const color = COLORS[index % COLORS.length];
+
+  return (
+    <div
+      style={{
+        position: "relative",
+        padding: "14px 16px",
+        borderRadius: 12,
+        background: "linear-gradient(135deg, rgba(13,17,23,0.75), rgba(22,27,34,0.5))",
+        border: `1px solid ${color}33`,
+        boxShadow: `0 0 0 1px ${color}11, inset 0 1px 0 rgba(255,255,255,0.04)`,
+        borderLeft: `3px solid ${color}`,
+      }}
+    >
+      <div style={{ display: "flex", alignItems: "center", gap: 8, marginBottom: 4 }}>
+        <span
+          style={{
+            width: 8, height: 8, borderRadius: "50%",
+            background: color,
+            boxShadow: `0 0 8px ${color}`,
+            flexShrink: 0,
+          }}
+        />
+        {step.type ? (
+          <span
+            style={{
+              fontSize: 10, fontWeight: 700, letterSpacing: "0.06em",
+              textTransform: "uppercase", color,
+            }}
+          >
+            {step.type}
+          </span>
+        ) : null}
+      </div>
+      <div style={{ color: "#e6edf3", fontSize: 14, fontWeight: 600 }}>
+        {step.content || step.id}
+      </div>
+      {step.id && step.id !== step.content ? (
+        <div style={{ color: "#6a7f97", fontSize: 11, fontFamily: "monospace", marginTop: 3 }}>{step.id}</div>
+      ) : null}
+    </div>
+  );
+}
+
+function CausalFlowDiagram({ chain, loading }: { chain: ChainStep[]; loading: boolean }) {
+  if (loading) {
+    return (
+      <div style={{ display: "flex", flexDirection: "column", gap: 4 }}>
+        {[1, 2, 3].map((i) => (
+          <div key={i} className="skeleton-item" style={{ height: 68 }} />
+        ))}
+      </div>
+    );
+  }
+
+  if (chain.length === 0) {
+    return (
+      <div style={{ textAlign: "center", padding: "40px 24px", color: "#8b949e", fontSize: 13 }}>
+        No causal chain steps found for this decision.
+      </div>
+    );
+  }
+
+  return (
+    <div style={{ display: "flex", flexDirection: "column", alignItems: "stretch" }}>
+      {chain.map((step, index) => (
+        <div key={`${step.id}-${index}`} style={{ display: "flex", flexDirection: "column" }}>
+          <ChainNodeCard step={step} index={index} />
+          {index < chain.length - 1 ? (
+            <RelationshipPill label={chain[index + 1]?.relationship || "→"} />
+          ) : null}
+        </div>
+      ))}
+    </div>
+  );
+}
+
+/* ─── Main Workspace ──────────────────────────────────────────────── */
+
+export function DecisionWorkspace() {
+  const [decisions, setDecisions] = useState<any[]>([]);
+  const [selectedDecision, setSelectedDecision] = useState<any | null>(null);
+  const [chain, setChain] = useState<ChainStep[]>([]);
+  const [loading, setLoading] = useState(false);
+  const [listLoading, setListLoading] = useState(true);
+  const [filterQuery, setFilterQuery] = useState("");
+
+  useEffect(() => {
+    const controller = new AbortController();
+    setListLoading(true);
+    fetch("/api/decisions", { signal: controller.signal })
+      .then((res) => {
+        if (!res.ok) throw new Error(`Failed to load decisions: ${res.status}`);
+        return res.json();
+      })
+      .then((data) => {
+        setDecisions(data);
+        if (data.length > 0) void handleSelectDecision(data[0]);
+      })
+      .catch((err) => { if (err.name !== "AbortError") console.error(err); })
+      .finally(() => setListLoading(false));
+    return () => controller.abort();
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const filteredDecisions = useMemo(() => {
+    if (!filterQuery.trim()) return decisions;
+    const q = filterQuery.toLowerCase();
+    return decisions.filter(
+      (d) =>
+        String(d.decision_id ?? "").toLowerCase().includes(q) ||
+        String(d.category ?? "").toLowerCase().includes(q) ||
+        String(d.outcome ?? "").toLowerCase().includes(q),
+    );
+  }, [decisions, filterQuery]);
+
+  const handleSelectDecision = async (d: any) => {
+    setSelectedDecision(d);
+    setLoading(true);
+    setChain([]);
+    const controller = new AbortController();
+    try {
+      const res = await fetch(`/api/decisions/${encodeURIComponent(d.decision_id)}/chain`, { signal: controller.signal });
+      if (!res.ok) throw new Error(`Failed to load chain: ${res.status}`);
+      const data = await res.json();
+      setChain(data.chain || []);
+    } catch (e) {
+      if ((e as DOMException).name !== "AbortError") console.error(e);
+    } finally {
+      setLoading(false);
+    }
+    return () => controller.abort();
+  };
+
+  return (
+    <div style={{ display: "flex", width: "100%", height: "100%", background: "#0d1117", overflow: "hidden" }}>
+      <style>{THEME_CSS}</style>
+
+      {/* Left Column — Decision List */}
+      <div
+        className="glass-panel"
+        style={{
+          width: 300,
+          display: "flex",
+          flexDirection: "column",
+          borderRadius: 0,
+          border: "none",
+          borderRight: "1px solid rgba(88,166,255,0.16)",
+        }}
+      >
+        {/* List header */}
+        <div style={{ padding: "20px 20px 14px", borderBottom: "1px solid rgba(255,255,255,0.06)", flexShrink: 0 }}>
+          <div style={{ display: "flex", alignItems: "center", gap: 8, marginBottom: 12 }}>
+            <Scale size={16} color="#4aa3ff" />
+            <h2 style={{ color: "#ebf3ff", margin: 0, fontSize: 15, fontWeight: 700 }}>Decisions</h2>
+            {decisions.length > 0 ? (
+              <span style={{ color: "#6a7f97", fontSize: 11, marginLeft: "auto" }}>{decisions.length}</span>
+            ) : null}
+          </div>
+
+          {/* Filter input */}
+          <div style={{ position: "relative" }}>
+            <Search
+              size={13}
+              color="#8b949e"
+              style={{ position: "absolute", left: 10, top: "50%", transform: "translateY(-50%)", pointerEvents: "none" }}
+            />
+            <input
+              type="text"
+              placeholder="Filter decisions…"
+              value={filterQuery}
+              onChange={(e) => setFilterQuery(e.target.value)}
+              style={filterInputStyle}
+            />
+          </div>
+        </div>
+
+        {/* Decision list */}
+        <div style={{ flex: 1, overflowY: "auto", padding: "12px 14px" }}>
+          {listLoading ? (
+            <SkeletonList />
+          ) : filteredDecisions.length === 0 ? (
+            <div style={{ color: "#6a7f97", fontSize: 13, textAlign: "center", padding: "32px 12px" }}>
+              {decisions.length === 0 ? "No decisions available." : "No decisions match your filter."}
+            </div>
+          ) : (
+            <div style={{ display: "flex", flexDirection: "column", gap: 6 }}>
+              {filteredDecisions.map((d) => {
+                const isActive = selectedDecision?.decision_id === d.decision_id;
+                return (
+                  <button
+                    key={d.decision_id}
+                    onClick={() => void handleSelectDecision(d)}
+                    style={{
+                      textAlign: "left",
+                      padding: "10px 12px",
+                      borderRadius: 10,
+                      cursor: "pointer",
+                      background: isActive
+                        ? "rgba(74,163,255,0.15)"
+                        : "rgba(255,255,255,0.02)",
+                      border: isActive
+                        ? "1px solid rgba(74,163,255,0.32)"
+                        : "1px solid rgba(255,255,255,0.06)",
+                      color: isActive ? "#ffffff" : "#c6d4e3",
+                      transition: "all 160ms ease",
+                    }}
+                  >
+                    <div style={{ fontWeight: 700, fontSize: 13, marginBottom: 4 }}>{d.decision_id}</div>
+                    <div style={{ display: "flex", alignItems: "center", gap: 6, flexWrap: "wrap" }}>
+                      {d.category ? (
+                        <span style={{ fontSize: 11, color: "#8b949e" }}>{d.category}</span>
+                      ) : null}
+                      {d.outcome ? <OutcomeBadge outcome={d.outcome} /> : null}
+                    </div>
+                  </button>
+                );
+              })}
+            </div>
+          )}
+        </div>
+      </div>
+
+      {/* Right Column — Decision Detail */}
+      <div style={{ flex: 1, display: "flex", flexDirection: "column", overflow: "hidden" }}>
+        {/* Radial accent */}
+        <div style={{ position: "absolute", inset: 0, background: "radial-gradient(ellipse at top right, rgba(88,166,255,0.04), transparent 55%)", pointerEvents: "none", zIndex: 0 }} />
+
+        {selectedDecision ? (
+          <div style={{ flex: 1, overflowY: "auto", padding: "28px 32px", position: "relative", zIndex: 1 }}>
+            {/* Decision header */}
+            <div style={{ marginBottom: 28 }}>
+              <div style={{ display: "flex", alignItems: "flex-start", gap: 14, flexWrap: "wrap" }}>
+                <div style={{ flex: 1, minWidth: 0 }}>
+                  <div style={{ color: "#8b949e", fontSize: 11, fontWeight: 700, textTransform: "uppercase", letterSpacing: "0.07em", marginBottom: 6 }}>
+                    Decision ID
+                  </div>
+                  <h1 style={{ color: "#ffffff", fontSize: 24, fontWeight: 800, letterSpacing: "-0.03em", margin: "0 0 8px 0", wordBreak: "break-word" }}>
+                    {selectedDecision.decision_id}
+                  </h1>
+                </div>
+                {selectedDecision.outcome ? <OutcomeBadge outcome={selectedDecision.outcome} /> : null}
+              </div>
+
+              {selectedDecision.category ? (
+                <div style={{ display: "inline-flex", alignItems: "center", gap: 6, padding: "4px 10px", borderRadius: 999, background: "rgba(255,255,255,0.04)", border: "1px solid rgba(255,255,255,0.08)", color: "#8b949e", fontSize: 12 }}>
+                  {selectedDecision.category}
+                </div>
+              ) : null}
+            </div>
+
+            {/* Causal Chain */}
+            <div className="glass-panel" style={{ padding: 24, borderRadius: 16 }}>
+              <div style={{ display: "flex", alignItems: "center", gap: 8, marginBottom: 20 }}>
+                <div style={{ width: 6, height: 6, borderRadius: "50%", background: "linear-gradient(135deg, #4aa3ff, #f2b66d)", boxShadow: "0 0 10px rgba(74,163,255,0.4)" }} />
+                <h3 style={{ color: "#e6edf3", margin: 0, fontSize: 14, fontWeight: 700, letterSpacing: "0.02em" }}>
+                  Causal Chain
+                </h3>
+                {chain.length > 0 && !loading ? (
+                  <span style={{ color: "#6a7f97", fontSize: 11, marginLeft: "auto" }}>
+                    {chain.length} step{chain.length !== 1 ? "s" : ""}
+                  </span>
+                ) : null}
+              </div>
+              <CausalFlowDiagram chain={chain} loading={loading} />
+            </div>
+          </div>
+        ) : (
+          <div style={{ flex: 1, display: "flex", alignItems: "center", justifyContent: "center", color: "#8b949e", fontSize: 14 }}>
+            Select a decision to inspect its causal chain.
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
+
+/* ─── styles ─────────────────────────────────────────────────────── */
+
+const filterInputStyle: React.CSSProperties = {
+  width: "100%",
+  padding: "7px 10px 7px 30px",
+  background: "rgba(0,0,0,0.25)",
+  border: "1px solid rgba(88,166,255,0.16)",
+  borderRadius: 8,
+  color: "#c6d4e3",
+  fontSize: 12,
+  outline: "none",
+  boxSizing: "border-box",
+};

explorer/src/workspaces/DiffMergeWorkspace/DiffMergeWorkspace.tsx

@@ -2,6 +2,7 @@
  * src/workspaces/DiffMergeWorkspace/DiffMergeWorkspace.tsx
  */
 import { useState } from "react";
+import { logEvent } from "../../store/registryStore";
 
 const THEME_CSS = `
   .glass-panel {
@@ -29,6 +30,11 @@ export function DiffMergeWorkspace() {
       const data = await res.json();
       if (data.merged_into) {
         setMsg(`Merge success: redirected ${data.edges_updated} edges to ${data.merged_into}`);
+        logEvent("merge", `Merged ${duplicateId} → ${data.merged_into} · ${data.edges_updated} edges redirected`, {
+          primary: data.merged_into,
+          duplicate: duplicateId,
+          edgesUpdated: data.edges_updated,
+        });
       } else {
         setMsg("Merge failed...");
       }

explorer/src/workspaces/EnrichWorkspace/EntityResolutionTab.tsx

@@ -0,0 +1,450 @@
+/**
+ * src/workspaces/EnrichWorkspace/EntityResolutionTab.tsx
+ *
+ * Entity Resolution — run duplicate detection, review flagged pairs,
+ * perform one-click merges, and view merge history from the Registry.
+ */
+import { useState, useCallback } from "react";
+import { ScanSearch, GitMerge, X, ChevronDown, ChevronRight, Loader2 } from "lucide-react";
+import { logEvent, useRegistry } from "../../store/registryStore";
+
+interface DedupPair {
+  a: { id: string; label: string; type: string };
+  b: { id: string; label: string; type: string };
+  score: number;
+  dismissed?: boolean;
+}
+
+interface RawDuplicateItem {
+  entity_a?: string | Record<string, unknown>;
+  entity_b?: string | Record<string, unknown>;
+  similarity?: number;
+  score?: number;
+  [key: string]: unknown;
+}
+
+function extractId(entity: string | Record<string, unknown> | undefined): string {
+  if (!entity) return "";
+  if (typeof entity === "string") return entity;
+  return String(entity.id ?? entity.text ?? JSON.stringify(entity));
+}
+
+function extractLabel(entity: string | Record<string, unknown> | undefined): string {
+  if (!entity) return "";
+  if (typeof entity === "string") return entity;
+  return String(entity.text ?? entity.label ?? entity.content ?? entity.id ?? "");
+}
+
+function extractType(entity: string | Record<string, unknown> | undefined): string {
+  if (!entity || typeof entity === "string") return "entity";
+  return String(entity.type ?? "entity");
+}
+
+function parseDuplicates(raw: RawDuplicateItem[]): DedupPair[] {
+  return raw.map((item) => ({
+    a: {
+      id: extractId(item.entity_a as string | Record<string, unknown>),
+      label: extractLabel(item.entity_a as string | Record<string, unknown>),
+      type: extractType(item.entity_a as string | Record<string, unknown>),
+    },
+    b: {
+      id: extractId(item.entity_b as string | Record<string, unknown>),
+      label: extractLabel(item.entity_b as string | Record<string, unknown>),
+      type: extractType(item.entity_b as string | Record<string, unknown>),
+    },
+    score: Number(item.similarity ?? item.score ?? 0),
+  }));
+}
+
+function ScoreBar({ score }: { score: number }) {
+  const pct = Math.min(100, Math.round(score * 100));
+  const color = score >= 0.9 ? "#ff7b72" : score >= 0.75 ? "#f2b66d" : "#4cc38a";
+  return (
+    <div style={{ display: "flex", alignItems: "center", gap: 8 }}>
+      <div style={{ flex: 1, height: 4, borderRadius: 999, background: "rgba(255,255,255,0.06)", overflow: "hidden" }}>
+        <div style={{ width: `${pct}%`, height: "100%", borderRadius: 999, background: color, transition: "width 300ms ease" }} />
+      </div>
+      <span style={{ fontSize: 11, fontWeight: 700, color, minWidth: 34, textAlign: "right" }}>
+        {pct}%
+      </span>
+    </div>
+  );
+}
+
+function PairRow({
+  pair,
+  onMerge,
+  onDismiss,
+}: {
+  pair: DedupPair;
+  onMerge: (primaryId: string, duplicateId: string) => Promise<void>;
+  onDismiss: () => void;
+}) {
+  const [expanded, setExpanded] = useState(false);
+  const [merging, setMerging] = useState(false);
+
+  const handleMerge = async () => {
+    setMerging(true);
+    await onMerge(pair.a.id, pair.b.id);
+    setMerging(false);
+  };
+
+  return (
+    <div style={pairCardStyle}>
+      <div style={{ display: "flex", alignItems: "flex-start", gap: 12 }}>
+        {/* Expand */}
+        <button onClick={() => setExpanded((v) => !v)} style={iconBtnStyle}>
+          {expanded ? <ChevronDown size={13} /> : <ChevronRight size={13} />}
+        </button>
+
+        {/* Entity Labels */}
+        <div style={{ flex: 1, minWidth: 0 }}>
+          <div style={{ display: "flex", alignItems: "center", gap: 8, flexWrap: "wrap" }}>
+            <span style={entityChipStyle}>{pair.a.label || pair.a.id}</span>
+            <span style={{ color: "#f2b66d", fontSize: 12, fontWeight: 700 }}>≈</span>
+            <span style={entityChipStyle}>{pair.b.label || pair.b.id}</span>
+          </div>
+          <div style={{ marginTop: 8 }}>
+            <ScoreBar score={pair.score} />
+          </div>
+        </div>
+
+        {/* Actions */}
+        <div style={{ display: "flex", gap: 6, flexShrink: 0 }}>
+          <button
+            onClick={() => void handleMerge()}
+            disabled={merging}
+            style={{
+              ...actionBtnStyle,
+              background: "rgba(76,195,138,0.12)",
+              border: "1px solid rgba(76,195,138,0.28)",
+              color: "#4cc38a",
+            }}
+          >
+            {merging ? <Loader2 size={12} className="animate-spin" /> : <GitMerge size={12} />}
+            <span>Merge</span>
+          </button>
+          <button onClick={onDismiss} style={iconBtnStyle} title="Dismiss">
+            <X size={13} />
+          </button>
+        </div>
+      </div>
+
+      {/* Expanded diff */}
+      {expanded ? (
+        <div style={{ marginTop: 12, display: "grid", gridTemplateColumns: "1fr 1fr", gap: 10 }}>
+          {[
+            { label: "Primary (keep)", entity: pair.a, accentColor: "#4aa3ff" },
+            { label: "Duplicate (remove)", entity: pair.b, accentColor: "#ff7b72" },
+          ].map(({ label, entity, accentColor }) => (
+            <div key={entity.id} style={{ ...diffCardStyle, borderColor: `${accentColor}33` }}>
+              <div style={{ color: accentColor, fontSize: 10, fontWeight: 700, letterSpacing: "0.06em", textTransform: "uppercase", marginBottom: 6 }}>
+                {label}
+              </div>
+              <div style={{ color: "#e6edf3", fontSize: 13, fontWeight: 600 }}>{entity.label || entity.id}</div>
+              <div style={{ color: "#8b949e", fontSize: 11, marginTop: 3 }}>{entity.type}</div>
+              <div style={{ color: "#6a7f97", fontSize: 10, marginTop: 4, fontFamily: "monospace" }}>{entity.id}</div>
+            </div>
+          ))}
+        </div>
+      ) : null}
+    </div>
+  );
+}
+
+export function EntityResolutionTab() {
+  const [threshold, setThreshold] = useState(0.82);
+  const [scanning, setScanning] = useState(false);
+  const [pairs, setPairs] = useState<DedupPair[]>([]);
+  const [scanError, setScanError] = useState("");
+  const registryEntries = useRegistry();
+
+  const mergeHistory = registryEntries.filter((e) => e.op === "merge");
+
+  const handleScan = useCallback(async () => {
+    setScanning(true);
+    setScanError("");
+    try {
+      const res = await fetch("/api/enrich/dedup", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ threshold }),
+      });
+      if (!res.ok) {
+        const err = await res.json().catch(() => ({}));
+        throw new Error((err as Record<string, string>).detail ?? `Scan failed (${res.status})`);
+      }
+      const data = await res.json();
+      const rawDuplicates: RawDuplicateItem[] = Array.isArray(data.duplicates)
+        ? (data.duplicates as RawDuplicateItem[])
+        : [];
+      const parsed = parseDuplicates(rawDuplicates);
+      setPairs(parsed);
+      logEvent("import", `Dedup scan found ${parsed.length} flagged pair${parsed.length !== 1 ? "s" : ""} (threshold ${threshold.toFixed(2)})`, {
+        threshold,
+        flagged: parsed.length,
+      });
+    } catch (err) {
+      setScanError(err instanceof Error ? err.message : "Scan failed");
+    } finally {
+      setScanning(false);
+    }
+  }, [threshold]);
+
+  const handleMerge = useCallback(async (primaryId: string, duplicateId: string) => {
+    try {
+      const res = await fetch("/api/enrich/merge", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ primary_id: primaryId, duplicate_ids: [duplicateId] }),
+      });
+      if (!res.ok) throw new Error(`Merge failed (${res.status})`);
+      const data = await res.json();
+      logEvent("merge", `Merged ${duplicateId} → ${primaryId} · ${data.edges_updated ?? 0} edges redirected`, {
+        primary: primaryId,
+        duplicate: duplicateId,
+        edgesUpdated: data.edges_updated,
+      });
+      setPairs((prev) => prev.filter((p) => !(p.a.id === primaryId && p.b.id === duplicateId)));
+    } catch (err) {
+      console.error("[EntityResolution] merge failed", err);
+    }
+  }, []);
+
+  const handleDismiss = useCallback((index: number) => {
+    setPairs((prev) => prev.filter((_, i) => i !== index));
+  }, []);
+
+  return (
+    <div style={shellStyle}>
+      {/* Header */}
+      <div style={headerStyle}>
+        <div style={{ display: "flex", alignItems: "center", gap: 10 }}>
+          <ScanSearch size={18} color="#f2b66d" />
+          <div>
+            <div style={{ color: "#ebf3ff", fontSize: 16, fontWeight: 700 }}>Entity Resolution</div>
+            <div style={{ color: "#8b949e", fontSize: 12 }}>Detect and merge duplicate entities in the knowledge graph</div>
+          </div>
+        </div>
+      </div>
+
+      {/* Scan controls */}
+      <div style={controlsCardStyle}>
+        <div style={{ display: "flex", alignItems: "center", gap: 16, flexWrap: "wrap" }}>
+          <div style={{ flex: 1, minWidth: 240 }}>
+            <div style={{ display: "flex", justifyContent: "space-between", marginBottom: 6 }}>
+              <label style={{ color: "#c6d4e3", fontSize: 12, fontWeight: 600 }}>Similarity Threshold</label>
+              <span style={{ color: "#f2b66d", fontSize: 12, fontWeight: 700 }}>{threshold.toFixed(2)}</span>
+            </div>
+            <input
+              type="range"
+              min={0.5}
+              max={0.99}
+              step={0.01}
+              value={threshold}
+              onChange={(e) => setThreshold(parseFloat(e.target.value))}
+              style={{ width: "100%", accentColor: "#f2b66d", cursor: "pointer" }}
+            />
+            <div style={{ display: "flex", justifyContent: "space-between", color: "#6a7f97", fontSize: 10, marginTop: 2 }}>
+              <span>More results (0.50)</span>
+              <span>Fewer, higher confidence (0.99)</span>
+            </div>
+          </div>
+          <button
+            onClick={() => void handleScan()}
+            disabled={scanning}
+            style={scanBtnStyle}
+          >
+            {scanning ? <Loader2 size={14} className="animate-spin" /> : <ScanSearch size={14} />}
+            <span>{scanning ? "Scanning…" : "Run Dedup Scan"}</span>
+          </button>
+        </div>
+        {scanError ? (
+          <div style={{ color: "#ff7b72", fontSize: 12, marginTop: 8 }}>{scanError}</div>
+        ) : null}
+      </div>
+
+      <div style={{ flex: 1, overflow: "hidden", display: "flex", gap: 0 }}>
+        {/* Flagged pairs */}
+        <div style={{ flex: 1, overflowY: "auto", padding: "16px 24px", display: "flex", flexDirection: "column", gap: 10 }}>
+          {pairs.length > 0 ? (
+            <>
+              <div style={{ display: "flex", alignItems: "center", justifyContent: "space-between", marginBottom: 4 }}>
+                <div style={{ color: "#8b949e", fontSize: 12, fontWeight: 600 }}>
+                  {pairs.length} flagged pair{pairs.length !== 1 ? "s" : ""}
+                </div>
+                <button onClick={() => setPairs([])} style={clearAllBtnStyle}>Clear all</button>
+              </div>
+              {pairs.map((pair, index) => (
+                <PairRow
+                  key={`${pair.a.id}:${pair.b.id}`}
+                  pair={pair}
+                  onMerge={handleMerge}
+                  onDismiss={() => handleDismiss(index)}
+                />
+              ))}
+            </>
+          ) : (
+            <div style={emptyStateStyle}>
+              <ScanSearch size={36} color="rgba(242,182,109,0.15)" />
+              <div style={{ color: "#8b949e", fontSize: 14, marginTop: 12, fontWeight: 500 }}>
+                No flagged pairs
+              </div>
+              <div style={{ color: "#6a7f97", fontSize: 12, marginTop: 4, textAlign: "center", maxWidth: 280 }}>
+                Set a similarity threshold and run a dedup scan to detect potential duplicates.
+              </div>
+            </div>
+          )}
+        </div>
+
+        {/* Merge history sidebar */}
+        {mergeHistory.length > 0 ? (
+          <div style={historyPanelStyle}>
+            <div style={{ color: "#8b949e", fontSize: 11, fontWeight: 700, letterSpacing: "0.06em", textTransform: "uppercase", marginBottom: 10 }}>
+              Merge History
+            </div>
+            <div style={{ display: "flex", flexDirection: "column", gap: 6 }}>
+              {mergeHistory.map((entry) => (
+                <div key={entry.id} style={historyRowStyle}>
+                  <GitMerge size={11} color="#f2b66d" />
+                  <div style={{ flex: 1, minWidth: 0 }}>
+                    <div style={{ color: "#c6d4e3", fontSize: 11, fontWeight: 500, overflow: "hidden", textOverflow: "ellipsis", whiteSpace: "nowrap" }}>
+                      {entry.summary}
+                    </div>
+                    <div style={{ color: "#6a7f97", fontSize: 10 }}>
+                      {entry.timestamp.toLocaleTimeString()}
+                    </div>
+                  </div>
+                </div>
+              ))}
+            </div>
+          </div>
+        ) : null}
+      </div>
+    </div>
+  );
+}
+
+/* ─── styles ─────────────────────────────────────────────────────── */
+
+const shellStyle: React.CSSProperties = {
+  display: "flex",
+  flexDirection: "column",
+  width: "100%",
+  height: "100%",
+  background: "#0d1117",
+  overflow: "hidden",
+};
+
+const headerStyle: React.CSSProperties = {
+  padding: "20px 24px 16px",
+  borderBottom: "1px solid rgba(88,166,255,0.1)",
+  flexShrink: 0,
+};
+
+const controlsCardStyle: React.CSSProperties = {
+  margin: "16px 24px",
+  padding: "16px 20px",
+  borderRadius: 14,
+  background: "linear-gradient(135deg, rgba(13,17,23,0.75), rgba(22,27,34,0.6))",
+  border: "1px solid rgba(242,182,109,0.18)",
+  flexShrink: 0,
+};
+
+const scanBtnStyle: React.CSSProperties = {
+  display: "inline-flex",
+  alignItems: "center",
+  gap: 7,
+  padding: "10px 18px",
+  borderRadius: 10,
+  background: "linear-gradient(135deg, rgba(242,182,109,0.22), rgba(242,182,109,0.1))",
+  border: "1px solid rgba(242,182,109,0.32)",
+  color: "#f2b66d",
+  fontSize: 13,
+  fontWeight: 700,
+  cursor: "pointer",
+  flexShrink: 0,
+};
+
+const pairCardStyle: React.CSSProperties = {
+  padding: "12px 14px",
+  borderRadius: 12,
+  background: "linear-gradient(135deg, rgba(13,17,23,0.6), rgba(22,27,34,0.4))",
+  border: "1px solid rgba(255,255,255,0.07)",
+};
+
+const entityChipStyle: React.CSSProperties = {
+  display: "inline-block",
+  padding: "4px 10px",
+  borderRadius: 8,
+  background: "rgba(255,255,255,0.04)",
+  border: "1px solid rgba(255,255,255,0.08)",
+  color: "#e6edf3",
+  fontSize: 12,
+  fontWeight: 600,
+};
+
+const actionBtnStyle: React.CSSProperties = {
+  display: "inline-flex",
+  alignItems: "center",
+  gap: 5,
+  padding: "5px 10px",
+  borderRadius: 8,
+  fontSize: 11,
+  fontWeight: 700,
+  cursor: "pointer",
+};
+
+const iconBtnStyle: React.CSSProperties = {
+  background: "transparent",
+  border: "none",
+  color: "#8b949e",
+  cursor: "pointer",
+  padding: 4,
+  borderRadius: 6,
+  display: "flex",
+  alignItems: "center",
+};
+
+const diffCardStyle: React.CSSProperties = {
+  padding: "10px 12px",
+  borderRadius: 10,
+  background: "rgba(0,0,0,0.2)",
+  border: "1px solid transparent",
+};
+
+const historyPanelStyle: React.CSSProperties = {
+  width: 240,
+  borderLeft: "1px solid rgba(255,255,255,0.06)",
+  padding: "16px 16px",
+  overflowY: "auto",
+  flexShrink: 0,
+};
+
+const historyRowStyle: React.CSSProperties = {
+  display: "flex",
+  alignItems: "flex-start",
+  gap: 7,
+  padding: "8px 0",
+  borderBottom: "1px solid rgba(255,255,255,0.04)",
+};
+
+const emptyStateStyle: React.CSSProperties = {
+  flex: 1,
+  display: "flex",
+  flexDirection: "column",
+  alignItems: "center",
+  justifyContent: "center",
+  padding: 40,
+  minHeight: 200,
+};
+
+const clearAllBtnStyle: React.CSSProperties = {
+  background: "transparent",
+  border: "none",
+  color: "#8b949e",
+  fontSize: 12,
+  cursor: "pointer",
+  padding: "2px 6px",
+  borderRadius: 6,
+};

explorer/src/workspaces/EnrichWorkspace/RegistryTab.tsx

@@ -0,0 +1,284 @@
+/**
+ * src/workspaces/EnrichWorkspace/RegistryTab.tsx
+ *
+ * Document Registry — a live, filterable chronological audit log of every
+ * KG / Ontology mutation that occurred in this session.
+ */
+import { useState } from "react";
+import { ClipboardList, Filter, Trash2, ChevronDown, ChevronRight } from "lucide-react";
+import { useRegistry, clearRegistry, type RegistryEntryOp } from "../../store/registryStore";
+
+const OP_META: Record<
+  RegistryEntryOp,
+  { label: string; color: string; bg: string; border: string }
+> = {
+  import:       { label: "IMPORT",       color: "#4aa3ff", bg: "rgba(74,163,255,0.12)",  border: "rgba(74,163,255,0.28)" },
+  export:       { label: "EXPORT",       color: "#8fa8c6", bg: "rgba(143,168,198,0.08)", border: "rgba(143,168,198,0.18)" },
+  merge:        { label: "MERGE",        color: "#f2b66d", bg: "rgba(242,182,109,0.12)", border: "rgba(242,182,109,0.28)" },
+  "add-node":   { label: "ADD NODE",     color: "#4cc38a", bg: "rgba(76,195,138,0.12)",  border: "rgba(76,195,138,0.28)" },
+  "add-edge":   { label: "ADD EDGE",     color: "#4cc38a", bg: "rgba(76,195,138,0.10)",  border: "rgba(76,195,138,0.22)" },
+  delete:       { label: "DELETE",       color: "#ff7b72", bg: "rgba(255,123,114,0.12)", border: "rgba(255,123,114,0.28)" },
+  infer:        { label: "INFER",        color: "#d2a8ff", bg: "rgba(210,168,255,0.12)", border: "rgba(210,168,255,0.28)" },
+  "vocab-import": { label: "VOCAB",      color: "#79c0ff", bg: "rgba(121,192,255,0.12)", border: "rgba(121,192,255,0.28)" },
+};
+
+const ALL_OPS: (RegistryEntryOp | "all")[] = [
+  "all", "import", "export", "merge", "add-node", "add-edge", "infer", "delete", "vocab-import",
+];
+
+function formatTimestamp(date: Date): string {
+  return date.toLocaleTimeString(undefined, { hour: "2-digit", minute: "2-digit", second: "2-digit" });
+}
+
+function formatDate(date: Date): string {
+  return date.toLocaleDateString(undefined, { month: "short", day: "numeric" });
+}
+
+function EntryRow({ entry }: { entry: ReturnType<typeof useRegistry>[number] }) {
+  const [expanded, setExpanded] = useState(false);
+  const meta = OP_META[entry.op];
+  const hasDetail = entry.detail && Object.keys(entry.detail).length > 0;
+
+  return (
+    <div style={entryCardStyle}>
+      <div style={{ display: "flex", alignItems: "flex-start", gap: 12 }}>
+        {/* Op Badge */}
+        <span
+          style={{
+            flexShrink: 0,
+            display: "inline-block",
+            padding: "3px 8px",
+            borderRadius: 999,
+            fontSize: 10,
+            fontWeight: 800,
+            letterSpacing: "0.07em",
+            color: meta.color,
+            background: meta.bg,
+            border: `1px solid ${meta.border}`,
+            marginTop: 1,
+          }}
+        >
+          {meta.label}
+        </span>
+
+        {/* Content */}
+        <div style={{ flex: 1, minWidth: 0 }}>
+          <div style={{ color: "#e6edf3", fontSize: 13, fontWeight: 500, wordBreak: "break-word" }}>
+            {entry.summary}
+          </div>
+          <div style={{ color: "#8b949e", fontSize: 11, marginTop: 3 }}>
+            {formatDate(entry.timestamp)} · {formatTimestamp(entry.timestamp)}
+          </div>
+        </div>
+
+        {/* Expand toggle */}
+        {hasDetail ? (
+          <button
+            onClick={() => setExpanded((v) => !v)}
+            title={expanded ? "Collapse details" : "Expand details"}
+            style={expandBtnStyle}
+          >
+            {expanded ? <ChevronDown size={14} /> : <ChevronRight size={14} />}
+          </button>
+        ) : null}
+      </div>
+
+      {/* Expanded detail */}
+      {expanded && hasDetail ? (
+        <pre style={detailPreStyle}>
+          {JSON.stringify(entry.detail, null, 2)}
+        </pre>
+      ) : null}
+    </div>
+  );
+}
+
+export function RegistryTab() {
+  const entries = useRegistry();
+  const [activeFilter, setActiveFilter] = useState<RegistryEntryOp | "all">("all");
+
+  const filtered = activeFilter === "all"
+    ? entries
+    : entries.filter((e) => e.op === activeFilter);
+
+  return (
+    <div style={shellStyle}>
+      {/* Header */}
+      <div style={headerStyle}>
+        <div style={{ display: "flex", alignItems: "center", gap: 10 }}>
+          <ClipboardList size={18} color="#4aa3ff" />
+          <div>
+            <div style={{ color: "#ebf3ff", fontSize: 16, fontWeight: 700 }}>Document Registry</div>
+            <div style={{ color: "#8b949e", fontSize: 12 }}>
+              Audit log of all KG and Ontology mutations this session
+            </div>
+          </div>
+        </div>
+        <div style={{ display: "flex", alignItems: "center", gap: 8 }}>
+          <span style={{ color: "#8fa8c6", fontSize: 12 }}>
+            {entries.length} event{entries.length !== 1 ? "s" : ""}
+          </span>
+          {entries.length > 0 ? (
+            <button
+              onClick={clearRegistry}
+              title="Clear all events"
+              style={clearBtnStyle}
+            >
+              <Trash2 size={13} />
+              <span>Clear</span>
+            </button>
+          ) : null}
+        </div>
+      </div>
+
+      {/* Filter pills */}
+      <div style={filterBarStyle}>
+        <Filter size={13} color="#8fa8c6" />
+        <div style={{ display: "flex", gap: 6, flexWrap: "wrap" }}>
+          {ALL_OPS.map((op) => {
+            const isActive = op === activeFilter;
+            const meta = op === "all" ? null : OP_META[op as RegistryEntryOp];
+            return (
+              <button
+                key={op}
+                onClick={() => setActiveFilter(op as typeof activeFilter)}
+                style={{
+                  padding: "4px 10px",
+                  borderRadius: 999,
+                  fontSize: 11,
+                  fontWeight: 600,
+                  cursor: "pointer",
+                  border: isActive
+                    ? `1px solid ${meta?.border ?? "rgba(127,208,255,0.35)"}`
+                    : "1px solid rgba(255,255,255,0.06)",
+                  background: isActive
+                    ? (meta?.bg ?? "rgba(74,163,255,0.14)")
+                    : "transparent",
+                  color: isActive
+                    ? (meta?.color ?? "#8ed3ff")
+                    : "#8b949e",
+                  transition: "all 140ms ease",
+                }}
+              >
+                {op === "all" ? "All" : (meta?.label ?? op)}
+              </button>
+            );
+          })}
+        </div>
+      </div>
+
+      {/* Feed */}
+      <div style={feedStyle}>
+        {filtered.length === 0 ? (
+          <div style={emptyStateStyle}>
+            <ClipboardList size={36} color="rgba(127,208,255,0.15)" />
+            <div style={{ color: "#8b949e", fontSize: 14, marginTop: 12, fontWeight: 500 }}>
+              No events recorded yet
+            </div>
+            <div style={{ color: "#6a7f97", fontSize: 12, marginTop: 4, textAlign: "center", maxWidth: 300 }}>
+              Import a file, run reasoning, or merge entities to see activity appear here.
+            </div>
+          </div>
+        ) : (
+          filtered.map((entry) => <EntryRow key={entry.id} entry={entry} />)
+        )}
+      </div>
+    </div>
+  );
+}
+
+/* ─── styles ─────────────────────────────────────────────────────── */
+
+const shellStyle: React.CSSProperties = {
+  display: "flex",
+  flexDirection: "column",
+  width: "100%",
+  height: "100%",
+  background: "#0d1117",
+  overflow: "hidden",
+};
+
+const headerStyle: React.CSSProperties = {
+  display: "flex",
+  alignItems: "center",
+  justifyContent: "space-between",
+  padding: "20px 24px 16px",
+  borderBottom: "1px solid rgba(88,166,255,0.1)",
+  flexShrink: 0,
+};
+
+const filterBarStyle: React.CSSProperties = {
+  display: "flex",
+  alignItems: "center",
+  gap: 10,
+  padding: "12px 24px",
+  borderBottom: "1px solid rgba(255,255,255,0.05)",
+  flexShrink: 0,
+};
+
+const feedStyle: React.CSSProperties = {
+  flex: 1,
+  overflowY: "auto",
+  padding: "16px 24px",
+  display: "flex",
+  flexDirection: "column",
+  gap: 8,
+};
+
+const entryCardStyle: React.CSSProperties = {
+  padding: "12px 14px",
+  borderRadius: 12,
+  background: "linear-gradient(135deg, rgba(13,17,23,0.6), rgba(22,27,34,0.4))",
+  border: "1px solid rgba(255,255,255,0.06)",
+  boxShadow: "inset 0 1px 0 rgba(255,255,255,0.03)",
+};
+
+const expandBtnStyle: React.CSSProperties = {
+  flexShrink: 0,
+  background: "transparent",
+  border: "none",
+  color: "#8b949e",
+  cursor: "pointer",
+  padding: 4,
+  borderRadius: 6,
+  display: "flex",
+  alignItems: "center",
+};
+
+const detailPreStyle: React.CSSProperties = {
+  marginTop: 10,
+  padding: "10px 12px",
+  borderRadius: 8,
+  background: "rgba(0,0,0,0.28)",
+  border: "1px solid rgba(255,255,255,0.06)",
+  color: "#79c0ff",
+  fontSize: 11,
+  fontFamily: "'JetBrains Mono', monospace",
+  overflowX: "auto",
+  whiteSpace: "pre-wrap",
+  wordBreak: "break-all",
+};
+
+const clearBtnStyle: React.CSSProperties = {
+  display: "inline-flex",
+  alignItems: "center",
+  gap: 5,
+  padding: "5px 10px",
+  borderRadius: 8,
+  border: "1px solid rgba(255,123,114,0.22)",
+  background: "rgba(255,123,114,0.06)",
+  color: "#ff7b72",
+  fontSize: 12,
+  fontWeight: 600,
+  cursor: "pointer",
+};
+
+const emptyStateStyle: React.CSSProperties = {
+  flex: 1,
+  display: "flex",
+  flexDirection: "column",
+  alignItems: "center",
+  justifyContent: "center",
+  padding: 40,
+  minHeight: 280,
+};

explorer/src/workspaces/GraphWorkspace/GraphCanvas.tsx

@@ -111,16 +111,20 @@ const FA2_SETTINGS = {
 
 const SIGMA_SETTINGS = {
   allowInvalidContainer: true,
-  labelRenderedSizeThreshold: 4,
+  labelRenderedSizeThreshold: 2,
   defaultNodeType: "circle",
   defaultEdgeType: "line",
-  hideLabelsOnMove: true,
-  hideEdgesOnMove: true,
+  hideLabelsOnMove: false,
+  hideEdgesOnMove: false,
   enableEdgeEvents: true,
-  renderEdgeLabels: false,
-  labelDensity: 0.86,
-  labelGridCellSize: 100,
+  renderEdgeLabels: true,
+  edgeLabelSize: 10,
+  edgeLabelColor: { color: "rgba(180, 210, 255, 0.72)" },
+  labelDensity: 1.1,
+  labelGridCellSize: 80,
   zIndex: true,
+  minCameraRatio: 0.04,
+  maxCameraRatio: 8,
   webGLTarget: "webgl2" as const,
   nodeProgramClasses: SEMANTICA_NODE_PROGRAM_CLASSES,
   edgeProgramClasses: SEMANTICA_EDGE_PROGRAM_CLASSES,

explorer/src/workspaces/GraphWorkspace/GraphInspectorPanel.tsx

@@ -1,5 +1,5 @@
 import type { CSSProperties } from "react";
-
+import { Loader2 } from "lucide-react";
 import { graph } from "../../store/graphStore";
 import { GRAPH_THEME } from "./graphTheme";
 
@@ -14,6 +14,8 @@ export type PathResponse = {
   path: string[];
   edge_ids?: string[];
   total_weight: number;
+  hop_count: number;
+  distance_band: "direct" | "near" | "mid-range" | "distant";
 };
 
 export interface GraphInspectorPanelProps {
@@ -22,11 +24,13 @@ export interface GraphInspectorPanelProps {
   predictionType: string;
   onPredictionTypeChange: (value: string) => void;
   onRunPredictions: () => void;
+  isRunningPredictions?: boolean;
   pathTargetId: string;
   onPathTargetChange: (value: string) => void;
   onTracePath: () => void;
   pathResult: PathResponse | null;
   onDownloadProvenance: (format: "json" | "markdown") => void;
+  onFocusNode?: (nodeId: string) => void;
 }
 
 const PROVENANCE_KEYS = ["source", "source_url", "pmid", "pmids", "evidence", "provenance", "confidence"] as const;
@@ -37,22 +41,132 @@ function sourceAttribution(properties: Record<string, unknown>) {
     .map((key) => ({ key, value: properties[key] }));
 }
 
+/* ─── Path Flow Visualizer ──────────────────────────────────────── */
+
+function getNodeLabel(nodeId: string): string {
+  if (!graph.hasNode(nodeId)) return nodeId;
+  const attrs = graph.getNodeAttributes(nodeId) as { label?: string; content?: string };
+  return String(attrs.label ?? attrs.content ?? nodeId);
+}
+
+function getEdgeLabelBetween(sourceId: string, targetId: string, edgeIds?: string[]): string {
+  // Try to find the specific edge from edgeIds first
+  if (edgeIds) {
+    for (const edgeId of edgeIds) {
+      if (graph.hasEdge(edgeId)) {
+        const [src, tgt] = graph.extremities(edgeId);
+        if ((src === sourceId && tgt === targetId) || (src === targetId && tgt === sourceId)) {
+          const attrs = graph.getEdgeAttributes(edgeId) as { edgeType?: string };
+          return attrs.edgeType ?? "→";
+        }
+      }
+    }
+  }
+  // Fallback: find any edge between the pair
+  if (graph.hasNode(sourceId) && graph.hasNode(targetId)) {
+    let label = "→";
+    graph.forEachEdge(sourceId, targetId, (_edgeId, attrs) => {
+      const edgeAttrs = attrs as { edgeType?: string };
+      if (edgeAttrs.edgeType) label = edgeAttrs.edgeType;
+    });
+    return label;
+  }
+  return "→";
+}
+
+function PathFlowViz({
+  path,
+  edgeIds,
+  totalWeight,
+  onFocusNode,
+}: {
+  path: string[];
+  edgeIds?: string[];
+  totalWeight: number;
+  onFocusNode?: (nodeId: string) => void;
+}) {
+  if (path.length === 0) {
+    return <div style={emptyTextStyle}>No path found between the selected nodes.</div>;
+  }
+
+  return (
+    <div>
+      {/* Horizontal scrollable chip flow */}
+      <div style={pathFlowContainerStyle}>
+        {path.map((nodeId, index) => {
+          const label = getNodeLabel(nodeId);
+          const edgeLabel =
+            index < path.length - 1
+              ? getEdgeLabelBetween(nodeId, path[index + 1], edgeIds)
+              : null;
+
+          return (
+            <div key={`${nodeId}-${index}`} style={{ display: "contents" }}>
+              {/* Node chip */}
+              <button
+                onClick={() => onFocusNode?.(nodeId)}
+                title={`Focus: ${nodeId}`}
+                style={{
+                  ...pathNodeChipStyle,
+                  cursor: onFocusNode ? "pointer" : "default",
+                }}
+              >
+                <span style={pathNodeIndexStyle}>{index + 1}</span>
+                <span style={{ maxWidth: 120, overflow: "hidden", textOverflow: "ellipsis", whiteSpace: "nowrap" }}>
+                  {label}
+                </span>
+              </button>
+
+              {/* Edge connector */}
+              {edgeLabel !== null ? (
+                <div style={pathEdgeConnectorStyle}>
+                  <div style={{ width: 16, height: 1, background: "rgba(88,166,255,0.3)" }} />
+                  <span style={pathEdgeLabelStyle}>{edgeLabel}</span>
+                  <div style={{ display: "flex", alignItems: "center" }}>
+                    <div style={{ width: 12, height: 1, background: "rgba(88,166,255,0.3)" }} />
+                    <div style={{ width: 0, height: 0, borderTop: "4px solid transparent", borderBottom: "4px solid transparent", borderLeft: "5px solid rgba(88,166,255,0.4)" }} />
+                  </div>
+                </div>
+              ) : null}
+            </div>
+          );
+        })}
+      </div>
+
+      {/* Weight badge */}
+      <div style={{ marginTop: 8, display: "flex", alignItems: "center", gap: 8 }}>
+        <span style={{ color: "#6a7f97", fontSize: 11 }}>Total weight:</span>
+        <span style={{ color: "#79c0ff", fontSize: 12, fontWeight: 700 }}>{totalWeight.toFixed(3)}</span>
+        <span style={{ color: "#6a7f97", fontSize: 11 }}>·</span>
+        <span style={{ color: "#6a7f97", fontSize: 11 }}>{path.length} hops</span>
+      </div>
+    </div>
+  );
+}
+
+/* ─── Main Panel ─────────────────────────────────────────────────── */
+
 export function GraphInspectorPanel({
   nodeId,
   predictions,
   predictionType,
   onPredictionTypeChange,
   onRunPredictions,
+  isRunningPredictions = false,
   pathTargetId,
   onPathTargetChange,
   onTracePath,
   pathResult,
   onDownloadProvenance,
+  onFocusNode,
 }: GraphInspectorPanelProps) {
   if (!nodeId) {
     return (
-      <div style={{ padding: 32, textAlign: "center" }}>
-        <p style={{ color: "#8b949e", fontSize: 14, margin: 0 }}>
+      <div style={{ padding: 32, textAlign: "center", display: "flex", flexDirection: "column", alignItems: "center", gap: 12, marginTop: 32 }}>
+        <div style={{ width: 40, height: 40, borderRadius: "50%", background: "rgba(74,163,255,0.08)", border: "1px solid rgba(74,163,255,0.14)", display: "flex", alignItems: "center", justifyContent: "center" }}>
+          <div style={{ width: 14, height: 14, borderRadius: "50%", background: "rgba(127,208,255,0.3)" }} />
+        </div>
+        <p style={{ color: "#8b949e", fontSize: 14, margin: 0, lineHeight: 1.6 }}>
           Search for a node or click one in the canvas to inspect its properties.
         </p>
       </div>
@@ -73,41 +187,21 @@ export function GraphInspectorPanel({
   const accentColor = attributes?.color || "#58a6ff";
   const propertyEntries = Object.entries(properties).filter(
     ([key]) =>
-      ![
-        "x",
-        "y",
-        "valid_from",
-        "valid_until",
-        "content",
-        "source",
-        "source_url",
-        "pmid",
-        "pmids",
-        "evidence",
-        "provenance",
-        "confidence",
-      ].includes(key),
+      !["x","y","valid_from","valid_until","content","source","source_url","pmid","pmids","evidence","provenance","confidence"].includes(key),
   );
 
   return (
     <aside style={{ padding: 24, display: "flex", flexDirection: "column", gap: 18 }}>
+      {/* Node identity */}
       <div style={{ borderBottom: "1px solid rgba(88, 166, 255, 0.2)", paddingBottom: 16 }}>
         <div style={{ display: "flex", alignItems: "center", gap: 10, marginBottom: 8 }}>
-          <span
-            style={{
-              background: accentColor,
-              boxShadow: `0 0 10px ${accentColor}`,
-              width: 8,
-              height: 8,
-              borderRadius: "50%",
-            }}
-          />
+          <span style={{ background: accentColor, boxShadow: `0 0 10px ${accentColor}`, width: 8, height: 8, borderRadius: "50%" }} />
           <span style={{ color: accentColor, fontSize: 12, fontWeight: 700 }}>{attributes?.nodeType || "Entity"}</span>
         </div>
         <h3 style={{ margin: 0, color: "#fff", fontSize: 20, fontWeight: 700, wordBreak: "break-word" }}>
           {String(attributes?.label ?? nodeId)}
         </h3>
-        <div style={{ color: "#8b949e", fontSize: 12, marginTop: 6 }}>{nodeId}</div>
+        <div style={{ color: "#8b949e", fontSize: 12, marginTop: 6, fontFamily: "monospace", wordBreak: "break-all" }}>{nodeId}</div>
         <div style={{ display: "flex", gap: 8, flexWrap: "wrap", marginTop: 12 }}>
           {attributes?.valid_from || attributes?.valid_until ? (
             <span style={subtleChipStyle}>temporal</span>
@@ -117,28 +211,27 @@ export function GraphInspectorPanel({
         </div>
       </div>
 
-      {(attributes?.valid_from || attributes?.valid_until) && (
-        <div
-          style={{
-            padding: "10px 12px",
-            background: "rgba(88, 166, 255, 0.08)",
-            border: "1px solid rgba(88, 166, 255, 0.2)",
-            borderRadius: 8,
-            fontSize: 12,
-            color: "#79c0ff",
-            fontFamily: "monospace",
-          }}
-        >
+      {/* Temporal bounds */}
+      {(attributes?.valid_from || attributes?.valid_until) ? (
+        <div style={{ padding: "10px 12px", background: "rgba(88,166,255,0.08)", border: "1px solid rgba(88,166,255,0.2)", borderRadius: 8, fontSize: 12, color: "#79c0ff", fontFamily: "monospace" }}>
           {attributes?.valid_from ? <div>from: {attributes.valid_from}</div> : null}
           {attributes?.valid_until ? <div>until: {attributes.valid_until}</div> : null}
         </div>
-      )}
+      ) : null}
 
+      {/* Actions */}
       <section style={sectionStyle}>
         <div style={sectionTitleStyle}>Actions</div>
         <div style={{ display: "flex", flexDirection: "column", gap: 10 }}>
-          <button style={{ ...actionButtonStyle, width: "100%", justifyContent: "center" }} onClick={onRunPredictions}>
-            Run Link Prediction
+          <button
+            style={{ ...actionButtonStyle, width: "100%", justifyContent: "center", opacity: isRunningPredictions ? 0.7 : 1 }}
+            onClick={onRunPredictions}
+            disabled={isRunningPredictions}
+          >
+            {isRunningPredictions ? (
+              <Loader2 size={14} className="animate-spin" style={{ marginRight: 6 }} />
+            ) : null}
+            {isRunningPredictions ? "Running…" : "Run Link Prediction"}
           </button>
           <div style={{ display: "flex", gap: 8, flexWrap: "wrap" }}>
             <button style={secondaryActionButtonStyle} onClick={() => onDownloadProvenance("json")}>
@@ -157,6 +250,7 @@ export function GraphInspectorPanel({
         />
       </section>
 
+      {/* Trace Path */}
       <section style={sectionStyle}>
         <div style={sectionTitleStyle}>Trace Path</div>
         <input
@@ -166,20 +260,22 @@ export function GraphInspectorPanel({
           style={inputStyle}
         />
         <button style={actionButtonStyle} onClick={onTracePath}>Trace Causal Path</button>
+
         {pathResult?.path?.length ? (
-          <div style={{ display: "flex", flexDirection: "column", gap: 6, marginTop: 10 }}>
-            {pathResult.path.map((step, index) => (
-              <div key={`${step}-${index}`} style={pathStepStyle}>{index + 1}. {step}</div>
-            ))}
-            <div style={{ color: "#79c0ff", fontSize: 12, marginTop: 4 }}>
-              total weight: {pathResult.total_weight.toFixed(3)}
-            </div>
-          </div>
+          <PathFlowViz
+            path={pathResult.path}
+            edgeIds={pathResult.edge_ids}
+            totalWeight={pathResult.total_weight}
+            onFocusNode={onFocusNode}
+          />
         ) : (
-          <div style={emptyTextStyle}>Choose a target or click a candidate prediction to prepare a path trace.</div>
+          <div style={emptyTextStyle}>
+            Choose a target or click a candidate prediction to prepare a path trace.
+          </div>
         )}
       </section>
 
+      {/* Candidate Links */}
       <details className="node-panel-collapse" open={predictions.length > 0}>
         <summary className="node-panel-summary">Candidate Links</summary>
         <div className="node-panel-body">
@@ -191,20 +287,40 @@ export function GraphInspectorPanel({
                   style={predictionCardStyle}
                   onClick={() => onPathTargetChange(prediction.target)}
                 >
-                  <div style={{ color: "#fff", fontWeight: 600 }}>{prediction.label || prediction.target}</div>
-                  <div style={{ color: "#8b949e", fontSize: 12 }}>{prediction.type}</div>
-                  <div style={{ color: "#58a6ff", fontSize: 12, marginTop: 4 }}>
-                    confidence {prediction.score.toFixed(3)}
+                  <div style={{ display: "flex", justifyContent: "space-between", alignItems: "flex-start", gap: 8 }}>
+                    <div>
+                      <div style={{ color: "#fff", fontWeight: 600 }}>{prediction.label || prediction.target}</div>
+                      <div style={{ color: "#8b949e", fontSize: 12 }}>{prediction.type}</div>
+                    </div>
+                    <div style={{ flexShrink: 0 }}>
+                      <div style={{
+                        padding: "2px 7px",
+                        borderRadius: 999,
+                        fontSize: 10,
+                        fontWeight: 700,
+                        background: "rgba(88,166,255,0.12)",
+                        border: "1px solid rgba(88,166,255,0.22)",
+                        color: "#58a6ff",
+                      }}>
+                        {(prediction.score * 100).toFixed(1)}%
+                      </div>
+                    </div>
                   </div>
                 </button>
               ))}
             </div>
+          ) : isRunningPredictions ? (
+            <div style={{ display: "flex", alignItems: "center", gap: 8, padding: 8, color: "#8b949e", fontSize: 12 }}>
+              <Loader2 size={13} className="animate-spin" />
+              <span>Computing candidate links…</span>
+            </div>
           ) : (
             <div style={emptyTextStyle}>Run link prediction to surface likely next-hop relationships.</div>
           )}
         </div>
       </details>
 
+      {/* Source Attribution */}
       <details className="node-panel-collapse">
         <summary className="node-panel-summary">Source Attribution</summary>
         <div className="node-panel-body">
@@ -212,7 +328,7 @@ export function GraphInspectorPanel({
             <div style={{ display: "flex", flexDirection: "column", gap: 8 }}>
               {attribution.map(({ key, value }) => (
                 <div key={key} style={propertyCardStyle}>
-                  <div style={{ color: "rgba(88, 166, 255, 0.7)", fontSize: 11, marginBottom: 4 }}>{key}</div>
+                  <div style={{ color: "rgba(88,166,255,0.7)", fontSize: 11, marginBottom: 4 }}>{key}</div>
                   <div style={{ color: "#e6edf3", fontSize: 13, wordBreak: "break-word" }}>
                     {typeof value === "object" ? JSON.stringify(value) : String(value)}
                   </div>
@@ -225,6 +341,7 @@ export function GraphInspectorPanel({
         </div>
       </details>
 
+      {/* Properties */}
       <details className="node-panel-collapse">
         <summary className="node-panel-summary">Properties</summary>
         <div className="node-panel-body">
@@ -232,7 +349,7 @@ export function GraphInspectorPanel({
             <div style={{ display: "flex", flexDirection: "column", gap: 8 }}>
               {propertyEntries.map(([key, value]) => (
                 <div key={key} style={propertyCardStyle}>
-                  <div style={{ color: "rgba(88, 166, 255, 0.7)", fontSize: 11, marginBottom: 4 }}>{key}</div>
+                  <div style={{ color: "rgba(88,166,255,0.7)", fontSize: 11, marginBottom: 4 }}>{key}</div>
                   <div style={{ color: "#e6edf3", fontSize: 13, wordBreak: "break-word" }}>
                     {typeof value === "object" ? JSON.stringify(value) : String(value)}
                   </div>
@@ -248,6 +365,8 @@ export function GraphInspectorPanel({
   );
 }
 
+/* ─── styles ─────────────────────────────────────────────────────── */
+
 const inputStyle: CSSProperties = {
   width: "100%",
   background: "rgba(4, 10, 18, 0.5)",
@@ -284,19 +403,12 @@ const secondaryActionButtonStyle: CSSProperties = {
 
 const predictionCardStyle: CSSProperties = {
   textAlign: "left",
-  padding: 12,
+  padding: "10px 12px",
   background: "rgba(88, 166, 255, 0.08)",
   border: "1px solid rgba(88, 166, 255, 0.12)",
   borderRadius: 10,
   cursor: "pointer",
-};
-
-const pathStepStyle: CSSProperties = {
-  color: "#e6edf3",
-  fontSize: 13,
-  padding: "8px 10px",
-  background: "rgba(255, 255, 255, 0.03)",
-  borderRadius: 8,
+  width: "100%",
 };
 
 const propertyCardStyle: CSSProperties = {
@@ -338,3 +450,58 @@ const sectionTitleStyle: CSSProperties = {
   textTransform: "uppercase",
   letterSpacing: "0.08em",
 };
+
+const pathFlowContainerStyle: CSSProperties = {
+  display: "flex",
+  alignItems: "center",
+  gap: 0,
+  flexWrap: "wrap",
+  rowGap: 8,
+};
+
+const pathNodeChipStyle: CSSProperties = {
+  display: "inline-flex",
+  alignItems: "center",
+  gap: 6,
+  padding: "5px 10px",
+  borderRadius: 999,
+  background: "rgba(88,166,255,0.1)",
+  border: "1px solid rgba(88,166,255,0.22)",
+  color: "#e6edf3",
+  fontSize: 12,
+  fontWeight: 600,
+  maxWidth: 160,
+};
+
+const pathNodeIndexStyle: CSSProperties = {
+  display: "inline-flex",
+  alignItems: "center",
+  justifyContent: "center",
+  width: 16,
+  height: 16,
+  borderRadius: "50%",
+  background: "rgba(88,166,255,0.22)",
+  color: "#79c0ff",
+  fontSize: 9,
+  fontWeight: 800,
+  flexShrink: 0,
+};
+
+const pathEdgeConnectorStyle: CSSProperties = {
+  display: "inline-flex",
+  alignItems: "center",
+  gap: 2,
+  flexShrink: 0,
+};
+
+const pathEdgeLabelStyle: CSSProperties = {
+  fontSize: 9,
+  fontWeight: 700,
+  color: "#6a7f97",
+  letterSpacing: "0.04em",
+  textTransform: "uppercase",
+  maxWidth: 70,
+  overflow: "hidden",
+  textOverflow: "ellipsis",
+  whiteSpace: "nowrap",
+};

explorer/src/workspaces/GraphWorkspace/GraphWorkspace.tsx

@@ -1,6 +1,7 @@
-import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 
 import { batchMergeEdges, batchMergeNodes, graph } from "../../store/graphStore";
+import { logEvent } from "../../store/registryStore";
 import type { EdgeAttributes, NodeAttributes } from "../../store/graphStore";
 import { curveGroupForPair } from "../../store/edgePairKeys.js";
 import { InspectorPanel, MetricChip, SurfaceCard } from "../../ui/primitives";
@@ -630,6 +631,7 @@ export function GraphWorkspace() {
   const [searchResults, setSearchResults] = useState<SearchResult[]>([]);
   const [searchError, setSearchError] = useState("");
   const [predictionType, setPredictionType] = useState("");
+  const [isRunningPredictions, setIsRunningPredictions] = useState(false);
   const [predictions, setPredictions] = useState<LinkPrediction[]>([]);
   const [pathTargetId, setPathTargetId] = useState("");
   const [pathResult, setPathResult] = useState<PathResponse | null>(null);
@@ -814,6 +816,7 @@ export function GraphWorkspace() {
 
   const handleRunPredictions = useCallback(async () => {
     if (!selectedNodeId) return;
+    setIsRunningPredictions(true);
     try {
       const response = await fetch("/api/enrich/links", {
         method: "POST",
@@ -833,6 +836,8 @@ export function GraphWorkspace() {
     } catch (predictionError) {
       console.error("[GraphWorkspace] prediction failed", predictionError);
       setPredictions([]);
+    } finally {
+      setIsRunningPredictions(false);
     }
   }, [predictionType, selectedNodeId]);
 
@@ -899,6 +904,7 @@ export function GraphWorkspace() {
               attributes: buildRealtimeNodeAttributes(payload),
             },
           ]);
+          logEvent("add-node", `Added node ${payload.label ?? payload.id}${payload.nodeType ? ` (${payload.nodeType})` : ""} via realtime ws`, { nodeId: payload.id, nodeType: payload.nodeType });
           sceneRef.current?.getRuntime()?.requestRender();
         }
         if (eventType === "ADD_EDGE") {
@@ -911,6 +917,7 @@ export function GraphWorkspace() {
               attributes: buildRealtimeEdgeAttributes(payload),
             },
           ]);
+          logEvent("add-edge", `Added edge ${payload.edgeType ?? payload.id} (${payload.source_id} → ${payload.target_id}) via realtime ws`, { edgeId: payload.id, edgeType: payload.edgeType, source: payload.source_id, target: payload.target_id });
           sceneRef.current?.getRuntime()?.requestRender();
         }
       } catch (socketError) {
@@ -1293,10 +1300,34 @@ export function GraphWorkspace() {
           disabled: showLoadingOverlay || !searchQuery.trim(),
           onClick: () => void handleSearch(),
         },
+        {
+          id: "zoom-in",
+          label: "＋ Zoom In",
+          title: "Zoom in (or scroll up on the canvas)",
+          onClick: () => {
+            const runtime = sceneRef.current?.getRuntime();
+            if (runtime?.renderer === "sigma") {
+              const camera = (runtime.scene as import("sigma").default).getCamera();
+              camera.animatedZoom({ duration: 200 });
+            }
+          },
+        },
+        {
+          id: "zoom-out",
+          label: "－ Zoom Out",
+          title: "Zoom out (or scroll down on the canvas)",
+          onClick: () => {
+            const runtime = sceneRef.current?.getRuntime();
+            if (runtime?.renderer === "sigma") {
+              const camera = (runtime.scene as import("sigma").default).getCamera();
+              camera.animatedUnzoom({ duration: 200 });
+            }
+          },
+        },
         {
           id: "fit-view",
           label: "Fit View",
-          title: "Reset the camera to the current view",
+          title: "Reset the camera to fit the whole graph",
           onClick: () => sceneRef.current?.fitView(),
         },
         {
@@ -1581,6 +1612,7 @@ export function GraphWorkspace() {
                       predictionType={predictionType}
                       onPredictionTypeChange={setPredictionType}
                       onRunPredictions={() => void handleRunPredictions()}
+                      isRunningPredictions={isRunningPredictions}
                       pathTargetId={pathTargetId}
                       onPathTargetChange={setPathTargetId}
                       onTracePath={() => void handleTracePath()}

explorer/src/workspaces/GraphWorkspace/GraphWorkspaceShell.tsx

@@ -33,6 +33,8 @@ type LinkPrediction = {
 type PathResponse = {
   path: GraphPath;
   total_weight: number;
+  hop_count: number;
+  distance_band: "direct" | "near" | "mid-range" | "distant";
 };
 
 type TemporalBounds = {

explorer/src/workspaces/GraphWorkspace/graphTheme.ts

@@ -265,16 +265,16 @@ export const GRAPH_THEME: GraphTheme = {
     ],
     overview: {
       nodeBase: "#0B1320",
-      nodeCore: "#435D7A",
+      nodeCore: "#5A7A9E",
       nodeMuted: "#121927",
-      nodeBorder: "#64758C",
-      nodeTintMix: 0.03,
-      nodeCoreMix: 0.52,
+      nodeBorder: "#7A92AE",
+      nodeTintMix: 0.14,
+      nodeCoreMix: 0.72,
       nodeShellAlpha: 0.97,
       nodeCoreAlpha: 1,
-      edgeBackbone: "rgba(83, 111, 148, 0.04)",
-      edgeStructure: "rgba(72, 90, 118, 0.009)",
-      edgeInspection: "rgba(98, 120, 148, 0.026)",
+      edgeBackbone: "rgba(100, 148, 210, 0.38)",
+      edgeStructure: "rgba(88, 140, 200, 0.28)",
+      edgeInspection: "rgba(110, 165, 230, 0.48)",
     },
     accent: {
       selected: "#F2D288",
@@ -285,12 +285,12 @@ export const GRAPH_THEME: GraphTheme = {
       inferred: "#D07B4D",
     },
     muted: {
-      fallback: "rgba(96, 112, 136, 0.1)",
-      nodeAlpha: 0.085,
-      edgeOverview: "rgba(82, 100, 124, 0.009)",
-      edgeStructure: "rgba(92, 112, 138, 0.02)",
-      edgeInspection: "rgba(124, 148, 176, 0.066)",
-      edgeFocus: "rgba(160, 186, 218, 0.16)",
+      fallback: "rgba(96, 112, 136, 0.18)",
+      nodeAlpha: 0.12,
+      edgeOverview: "rgba(82, 100, 124, 0.12)",
+      edgeStructure: "rgba(92, 112, 138, 0.18)",
+      edgeInspection: "rgba(124, 148, 176, 0.26)",
+      edgeFocus: "rgba(160, 186, 218, 0.42)",
     },
     background: {
       canvas: "#07101A",
@@ -305,36 +305,36 @@ export const GRAPH_THEME: GraphTheme = {
   zoomTiers: {
     overview: {
       maxRatio: Number.POSITIVE_INFINITY,
-      nodeScale: 0.66,
-      labelThreshold: 0.985,
-      labelBudget: 10,
-      edgePriorityThreshold: 0.72,
+      nodeScale: 0.88,
+      labelThreshold: 0.92,
+      labelBudget: 28,
+      edgePriorityThreshold: 0.55,
       arrowPriorityThreshold: Number.POSITIVE_INFINITY,
-      edgeSizeScale: 0.34,
+      edgeSizeScale: 0.62,
       showBadges: false,
       showCurves: false,
       showContextualArrows: false,
     },
     structure: {
       maxRatio: 1.2,
-      nodeScale: 0.98,
-      labelThreshold: 0.88,
-      labelBudget: 36,
-      edgePriorityThreshold: 0.4,
-      arrowPriorityThreshold: 0.75,
-      edgeSizeScale: 0.92,
+      nodeScale: 1.02,
+      labelThreshold: 0.82,
+      labelBudget: 60,
+      edgePriorityThreshold: 0.3,
+      arrowPriorityThreshold: 0.65,
+      edgeSizeScale: 1.05,
       showBadges: true,
       showCurves: true,
       showContextualArrows: true,
     },
     inspection: {
       maxRatio: 0.5,
-      nodeScale: 1,
-      labelThreshold: 0.7,
-      labelBudget: 80,
+      nodeScale: 1.08,
+      labelThreshold: 0.6,
+      labelBudget: 120,
       edgePriorityThreshold: 0,
-      arrowPriorityThreshold: 0.58,
-      edgeSizeScale: 1.04,
+      arrowPriorityThreshold: 0.45,
+      edgeSizeScale: 1.18,
       showBadges: true,
       showCurves: true,
       showContextualArrows: true,
@@ -398,13 +398,13 @@ export const GRAPH_THEME: GraphTheme = {
       inspection: { base: 1.2, emphasis: 1.7, muted: 0.6 },
     },
     states: {
-      default: { color: "base", sizeMultiplier: 0.72, minSize: 0.68, forceLabel: false, zIndex: 0, borderBoost: -0.42 },
-      hovered: { color: "hovered", sizeMultiplier: 1.18, minSize: 12.5, forceLabel: true, zIndex: 4, borderBoost: 0.22 },
-      selected: { color: "selected", sizeMultiplier: 1.06, minSize: 10.5, forceLabel: true, zIndex: 3, borderBoost: 0.2 },
-      neighbor: { color: "base", sizeMultiplier: 0.84, minSize: 4.8, forceLabel: true, zIndex: 2, borderBoost: -0.08 },
-      path: { color: "path", sizeMultiplier: 1.01, minSize: 6.2, forceLabel: true, zIndex: 2, borderBoost: 0.08 },
-      inactive: { color: "muted", sizeMultiplier: 0.32, minSize: 0.46, forceLabel: false, zIndex: 0, borderBoost: -0.42 },
-      muted: { color: "muted", sizeMultiplier: 0.32, minSize: 0.46, forceLabel: false, zIndex: 0, borderBoost: -0.42 },
+      default: { color: "base", sizeMultiplier: 0.92, minSize: 3.5, forceLabel: false, zIndex: 0, borderBoost: -0.18 },
+      hovered: { color: "hovered", sizeMultiplier: 1.28, minSize: 13.5, forceLabel: true, zIndex: 4, borderBoost: 0.28 },
+      selected: { color: "selected", sizeMultiplier: 1.14, minSize: 11.5, forceLabel: true, zIndex: 3, borderBoost: 0.24 },
+      neighbor: { color: "base", sizeMultiplier: 0.96, minSize: 5.5, forceLabel: true, zIndex: 2, borderBoost: 0.04 },
+      path: { color: "path", sizeMultiplier: 1.08, minSize: 7.0, forceLabel: true, zIndex: 2, borderBoost: 0.12 },
+      inactive: { color: "muted", sizeMultiplier: 0.48, minSize: 1.8, forceLabel: false, zIndex: 0, borderBoost: -0.28 },
+      muted: { color: "muted", sizeMultiplier: 0.48, minSize: 1.8, forceLabel: false, zIndex: 0, borderBoost: -0.28 },
     },
     variants: {
       default: { sizeMultiplier: 1, borderBoost: 0, haloBoost: 0, badgeVisibleFrom: "inspection" },
@@ -437,14 +437,14 @@ export const GRAPH_THEME: GraphTheme = {
   },
   edges: {
     states: {
-      default: { color: "structure", sizeMultiplier: 0.74, minSize: 0.18, zIndex: 0, forceArrow: false, hide: false },
-      backbone: { color: "backbone", sizeMultiplier: 0.72, minSize: 0.18, zIndex: 1, forceArrow: false, hide: false },
-      hovered: { color: "hover", sizeMultiplier: 1.42, minSize: 1.45, zIndex: 3, forceArrow: true, hide: false },
-      selected: { color: "hover", sizeMultiplier: 1.42, minSize: 1.45, zIndex: 3, forceArrow: true, hide: false },
-      neighbor: { color: "focus", sizeMultiplier: 0.92, minSize: 0.5, zIndex: 1, forceArrow: false, hide: false },
-      path: { color: "path", sizeMultiplier: 1.5, minSize: 1.8, zIndex: 4, forceArrow: true, hide: false },
-      inactive: { color: "muted", sizeMultiplier: 1, minSize: 0.16, zIndex: 0, forceArrow: false, hide: true },
-      muted: { color: "muted", sizeMultiplier: 1, minSize: 0.16, zIndex: 0, forceArrow: false, hide: true },
+      default: { color: "structure", sizeMultiplier: 0.96, minSize: 0.9, zIndex: 0, forceArrow: false, hide: false },
+      backbone: { color: "backbone", sizeMultiplier: 1.0, minSize: 1.0, zIndex: 1, forceArrow: false, hide: false },
+      hovered: { color: "hover", sizeMultiplier: 1.6, minSize: 2.2, zIndex: 3, forceArrow: true, hide: false },
+      selected: { color: "hover", sizeMultiplier: 1.6, minSize: 2.2, zIndex: 3, forceArrow: true, hide: false },
+      neighbor: { color: "focus", sizeMultiplier: 1.1, minSize: 1.2, zIndex: 1, forceArrow: false, hide: false },
+      path: { color: "path", sizeMultiplier: 1.7, minSize: 2.4, zIndex: 4, forceArrow: true, hide: false },
+      inactive: { color: "muted", sizeMultiplier: 0.6, minSize: 0.5, zIndex: 0, forceArrow: false, hide: false },
+      muted: { color: "muted", sizeMultiplier: 0.6, minSize: 0.5, zIndex: 0, forceArrow: false, hide: false },
     },
     variants: {
       line: { baseType: "line", arrowPolicy: "hidden", curveStrength: 0, sizeMultiplier: 1, glowAlpha: 0 },

explorer/src/workspaces/ImportExportWorkspace/ImportExportWorkspace.tsx

@@ -4,6 +4,7 @@
 import { useState, useCallback } from "react";
 import { useDropzone } from "react-dropzone";
 import { UploadCloud, Download, FileJson, FileText, CheckCircle2, AlertCircle, Loader2 } from "lucide-react";
+import { logEvent } from "../../store/registryStore";
 
 const THEME_CSS = `
   .glass-panel {
@@ -107,6 +108,11 @@ export function ImportExportWorkspace() {
       
       const data = await res.json();
       showToast("success", `Imported ${data.nodes_imported} nodes and ${data.edges_imported} edges!`);
+      logEvent("import", `Imported ${data.nodes_imported} nodes · ${data.edges_imported} edges from ${file.name}`, {
+        file: file.name,
+        nodesImported: data.nodes_imported,
+        edgesImported: data.edges_imported,
+      });
       setFile(null);
     } catch (err: any) {
       showToast("error", err.message || "An error occurred during import");
@@ -142,6 +148,7 @@ export function ImportExportWorkspace() {
       document.body.removeChild(a);
       
       showToast("success", "Export complete! Your download should begin shortly.");
+      logEvent("export", `Exported graph as ${exportFormat.toUpperCase()}`, { format: exportFormat });
     } catch (err: any) {
       showToast("error", err.message || "An error occurred during export");
     } finally {

explorer/src/workspaces/ManageWorkspace/KGOverviewTab.tsx

@@ -0,0 +1,339 @@
+/**
+ * src/workspaces/ManageWorkspace/KGOverviewTab.tsx
+ *
+ * Quick-view dashboard for the Knowledge Graph: node/edge counts,
+ * type distributions, and top connected nodes.
+ */
+import { useState, useEffect, useCallback } from "react";
+import { Network, RefreshCw, Loader2 } from "lucide-react";
+
+interface KGStats {
+  node_count: number;
+  edge_count: number;
+  node_types?: Record<string, number>;
+  edge_types?: Record<string, number>;
+  [key: string]: unknown;
+}
+
+interface NodeItem {
+  id: string;
+  type: string;
+  content: string;
+  properties?: Record<string, unknown>;
+}
+
+interface NodeListResponse {
+  nodes: NodeItem[];
+  total: number;
+}
+
+function TypeBar({ label, count, total, color }: { label: string; count: number; total: number; color: string }) {
+  const pct = total > 0 ? Math.round((count / total) * 100) : 0;
+  return (
+    <div style={{ display: "flex", alignItems: "center", gap: 10, padding: "5px 0" }}>
+      <div style={{ width: 120, flexShrink: 0, color: "#c6d4e3", fontSize: 12, overflow: "hidden", textOverflow: "ellipsis", whiteSpace: "nowrap" }} title={label}>
+        {label}
+      </div>
+      <div style={{ flex: 1, height: 6, borderRadius: 999, background: "rgba(255,255,255,0.06)", overflow: "hidden" }}>
+        <div
+          style={{
+            width: `${pct}%`,
+            height: "100%",
+            borderRadius: 999,
+            background: color,
+            transition: "width 400ms ease",
+          }}
+        />
+      </div>
+      <div style={{ width: 52, textAlign: "right", flexShrink: 0, display: "flex", gap: 6, justifyContent: "flex-end" }}>
+        <span style={{ color: "#8b949e", fontSize: 11 }}>{count.toLocaleString()}</span>
+        <span style={{ color: "#6a7f97", fontSize: 11 }}>{pct}%</span>
+      </div>
+    </div>
+  );
+}
+
+const NODE_COLORS = ["#3E79F2", "#149287", "#2F9F61", "#555FD6", "#8A56D8", "#B65473", "#C9922E", "#4aa3ff", "#f2b66d"];
+const EDGE_COLORS = ["#4cc38a", "#79c0ff", "#d2a8ff", "#f2b66d", "#ff7b72", "#58a6ff", "#4aa3ff", "#8A56D8"];
+
+function buildTypeMap(nodes: NodeItem[], key: keyof NodeItem): Record<string, number> {
+  const map: Record<string, number> = {};
+  for (const node of nodes) {
+    const val = String(node[key] ?? "unknown");
+    map[val] = (map[val] ?? 0) + 1;
+  }
+  return map;
+}
+
+export function KGOverviewTab() {
+  const [stats, setStats] = useState<KGStats | null>(null);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState("");
+  const [topNodes, setTopNodes] = useState<{ node: NodeItem; neighborCount: number }[]>([]);
+  const [nodeTypeMap, setNodeTypeMap] = useState<Record<string, number>>({});
+
+  const fetchOverview = useCallback(async () => {
+    setLoading(true);
+    setError("");
+    try {
+      const [statsRes, nodesRes] = await Promise.all([
+        fetch("/api/graph/stats"),
+        fetch("/api/graph/nodes?limit=500"),
+      ]);
+
+      if (statsRes.ok) {
+        const statsData: KGStats = await statsRes.json();
+        setStats(statsData);
+      }
+
+      if (nodesRes.ok) {
+        const nodesData: NodeListResponse = await nodesRes.json();
+        const nodes = nodesData.nodes ?? [];
+        setNodeTypeMap(buildTypeMap(nodes, "type"));
+
+        // Simulate neighbor counts via edges fetch for top-N
+        const edgesRes = await fetch("/api/graph/edges?limit=2000");
+        if (edgesRes.ok) {
+          const edgesData = await edgesRes.json();
+          const edges: { source: string; target: string }[] = edgesData.edges ?? [];
+          const degreeMap: Record<string, number> = {};
+          for (const edge of edges) {
+            degreeMap[edge.source] = (degreeMap[edge.source] ?? 0) + 1;
+            degreeMap[edge.target] = (degreeMap[edge.target] ?? 0) + 1;
+          }
+          const sorted = nodes
+            .map((n) => ({ node: n, neighborCount: degreeMap[n.id] ?? 0 }))
+            .sort((a, b) => b.neighborCount - a.neighborCount)
+            .slice(0, 10);
+          setTopNodes(sorted);
+        }
+      }
+    } catch {
+      setError("Failed to load graph overview. Ensure the server is running.");
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    void fetchOverview();
+  }, [fetchOverview]);
+
+  const nodeTypeEntries = Object.entries(nodeTypeMap).sort((a, b) => b[1] - a[1]);
+  const edgeTypeEntries = stats?.edge_types
+    ? Object.entries(stats.edge_types).sort((a, b) => b[1] - a[1])
+    : [];
+
+  const totalNodes = stats?.node_count ?? 0;
+  const totalEdges = stats?.edge_count ?? 0;
+
+  return (
+    <div style={shellStyle}>
+      {/* Header */}
+      <div style={headerStyle}>
+        <div style={{ display: "flex", alignItems: "center", gap: 10 }}>
+          <Network size={18} color="#4aa3ff" />
+          <div>
+            <div style={{ color: "#ebf3ff", fontSize: 16, fontWeight: 700 }}>KG Overview</div>
+            <div style={{ color: "#8b949e", fontSize: 12 }}>Quick view of the Knowledge Graph structure and health</div>
+          </div>
+        </div>
+        <button onClick={() => void fetchOverview()} disabled={loading} style={refreshBtnStyle}>
+          {loading ? <Loader2 size={13} className="animate-spin" /> : <RefreshCw size={13} />}
+          <span>Refresh</span>
+        </button>
+      </div>
+
+      {error ? (
+        <div style={{ margin: "16px 24px", padding: "10px 14px", borderRadius: 10, background: "rgba(255,123,114,0.08)", border: "1px solid rgba(255,123,114,0.2)", color: "#ff7b72", fontSize: 13 }}>
+          {error}
+        </div>
+      ) : null}
+
+      <div style={scrollBodyStyle}>
+        {/* Stats chips */}
+        <div style={statsRowStyle}>
+          {[
+            { label: "Nodes", value: totalNodes.toLocaleString(), color: "#4aa3ff", sub: `${nodeTypeEntries.length} types` },
+            { label: "Edges", value: totalEdges.toLocaleString(), color: "#4cc38a", sub: `${edgeTypeEntries.length} relationship types` },
+            { label: "Density", value: totalNodes > 1 ? ((totalEdges / (totalNodes * (totalNodes - 1))) * 100).toFixed(3) + "%" : "—", color: "#d2a8ff", sub: "graph density" },
+          ].map(({ label, value, color, sub }) => (
+            <div key={label} style={statCardStyle}>
+              <div style={{ color: "#8b949e", fontSize: 11, fontWeight: 700, textTransform: "uppercase", letterSpacing: "0.06em", marginBottom: 4 }}>{label}</div>
+              <div style={{ color, fontSize: 28, fontWeight: 800, letterSpacing: "-0.04em", lineHeight: 1 }}>{loading ? "—" : value}</div>
+              <div style={{ color: "#6a7f97", fontSize: 11, marginTop: 4 }}>{sub}</div>
+            </div>
+          ))}
+        </div>
+
+        {/* Type breakdowns */}
+        <div style={sectionRowStyle}>
+          {/* Node types */}
+          <div style={breakdownCardStyle}>
+            <div style={sectionTitleStyle}>Node Type Breakdown</div>
+            {loading ? (
+              <div style={skeletonWrapStyle}>
+                {[80, 65, 45, 35, 25].map((w, i) => (
+                  <div key={i} style={{ ...skeletonBarStyle, width: `${w}%` }} />
+                ))}
+              </div>
+            ) : nodeTypeEntries.length === 0 ? (
+              <div style={{ color: "#6a7f97", fontSize: 12 }}>No data — load the graph first.</div>
+            ) : (
+              nodeTypeEntries.slice(0, 8).map(([type, count], i) => (
+                <TypeBar key={type} label={type} count={count} total={totalNodes || 1} color={NODE_COLORS[i % NODE_COLORS.length]} />
+              ))
+            )}
+          </div>
+
+          {/* Edge types */}
+          <div style={breakdownCardStyle}>
+            <div style={sectionTitleStyle}>Edge Type Breakdown</div>
+            {loading ? (
+              <div style={skeletonWrapStyle}>
+                {[70, 55, 48, 30, 20].map((w, i) => (
+                  <div key={i} style={{ ...skeletonBarStyle, width: `${w}%` }} />
+                ))}
+              </div>
+            ) : edgeTypeEntries.length === 0 ? (
+              <div style={{ color: "#6a7f97", fontSize: 12 }}>Edge type breakdown requires the stats endpoint to return edge_types.</div>
+            ) : (
+              edgeTypeEntries.slice(0, 8).map(([type, count], i) => (
+                <TypeBar key={type} label={type} count={count} total={totalEdges || 1} color={EDGE_COLORS[i % EDGE_COLORS.length]} />
+              ))
+            )}
+          </div>
+        </div>
+
+        {/* Top connected nodes */}
+        {topNodes.length > 0 ? (
+          <div style={breakdownCardStyle}>
+            <div style={sectionTitleStyle}>Top Connected Nodes (by degree)</div>
+            <div style={{ display: "grid", gridTemplateColumns: "repeat(auto-fit, minmax(280px, 1fr))", gap: 8, marginTop: 2 }}>
+              {topNodes.map(({ node, neighborCount }, rank) => (
+                <div key={node.id} style={topNodeRowStyle}>
+                  <div style={{ color: "#6a7f97", fontSize: 12, fontWeight: 700, minWidth: 20 }}>#{rank + 1}</div>
+                  <div style={{ flex: 1, minWidth: 0 }}>
+                    <div style={{ color: "#e6edf3", fontSize: 13, fontWeight: 600, overflow: "hidden", textOverflow: "ellipsis", whiteSpace: "nowrap" }}>
+                      {node.content || node.id}
+                    </div>
+                    <div style={{ color: "#8b949e", fontSize: 11 }}>{node.type}</div>
+                  </div>
+                  <div style={{ color: "#4aa3ff", fontSize: 12, fontWeight: 700, flexShrink: 0 }}>
+                    {neighborCount} conn.
+                  </div>
+                </div>
+              ))}
+            </div>
+          </div>
+        ) : null}
+      </div>
+    </div>
+  );
+}
+
+/* ─── styles ─────────────────────────────────────────────────────── */
+
+const shellStyle: React.CSSProperties = {
+  display: "flex",
+  flexDirection: "column",
+  width: "100%",
+  height: "100%",
+  background: "#0d1117",
+  overflow: "hidden",
+};
+
+const headerStyle: React.CSSProperties = {
+  display: "flex",
+  alignItems: "center",
+  justifyContent: "space-between",
+  padding: "20px 24px 16px",
+  borderBottom: "1px solid rgba(88,166,255,0.1)",
+  flexShrink: 0,
+};
+
+const refreshBtnStyle: React.CSSProperties = {
+  display: "inline-flex",
+  alignItems: "center",
+  gap: 6,
+  padding: "6px 12px",
+  borderRadius: 8,
+  border: "1px solid rgba(127,208,255,0.16)",
+  background: "rgba(74,163,255,0.08)",
+  color: "#8fa8c6",
+  fontSize: 12,
+  fontWeight: 600,
+  cursor: "pointer",
+};
+
+const scrollBodyStyle: React.CSSProperties = {
+  flex: 1,
+  overflowY: "auto",
+  padding: "20px 24px",
+  display: "flex",
+  flexDirection: "column",
+  gap: 16,
+};
+
+const statsRowStyle: React.CSSProperties = {
+  display: "grid",
+  gridTemplateColumns: "repeat(auto-fit, minmax(180px, 1fr))",
+  gap: 12,
+};
+
+const statCardStyle: React.CSSProperties = {
+  padding: "18px 20px",
+  borderRadius: 16,
+  background: "linear-gradient(135deg, rgba(13,17,23,0.8), rgba(22,27,34,0.5))",
+  border: "1px solid rgba(127,208,255,0.1)",
+  boxShadow: "inset 0 1px 0 rgba(255,255,255,0.04)",
+};
+
+const sectionRowStyle: React.CSSProperties = {
+  display: "grid",
+  gridTemplateColumns: "1fr 1fr",
+  gap: 12,
+};
+
+const breakdownCardStyle: React.CSSProperties = {
+  padding: "16px 18px",
+  borderRadius: 14,
+  background: "linear-gradient(135deg, rgba(13,17,23,0.7), rgba(22,27,34,0.4))",
+  border: "1px solid rgba(255,255,255,0.06)",
+  display: "flex",
+  flexDirection: "column",
+  gap: 8,
+};
+
+const sectionTitleStyle: React.CSSProperties = {
+  color: "#8b949e",
+  fontSize: 11,
+  fontWeight: 700,
+  textTransform: "uppercase",
+  letterSpacing: "0.07em",
+  marginBottom: 4,
+};
+
+const topNodeRowStyle: React.CSSProperties = {
+  display: "flex",
+  alignItems: "center",
+  gap: 10,
+  padding: "8px 10px",
+  borderRadius: 10,
+  background: "rgba(255,255,255,0.025)",
+  border: "1px solid rgba(255,255,255,0.05)",
+};
+
+const skeletonWrapStyle: React.CSSProperties = {
+  display: "flex",
+  flexDirection: "column",
+  gap: 8,
+  marginTop: 4,
+};
+
+const skeletonBarStyle: React.CSSProperties = {
+  height: 12,
+  borderRadius: 999,
+  background: "rgba(255,255,255,0.05)",
+  animation: "skeleton-pulse 1.4s ease-in-out infinite",
+};

explorer/src/workspaces/ManageWorkspace/OntologySummaryTab.tsx

@@ -0,0 +1,346 @@
+/**
+ * src/workspaces/ManageWorkspace/OntologySummaryTab.tsx
+ *
+ * A compact read-only view of all loaded SKOS ConceptSchemes and their
+ * top-level concepts. Clicking a concept deep-links to the Vocabulary Browser.
+ */
+import { useState } from "react";
+import { BookOpen, ChevronRight, ChevronDown, ExternalLink } from "lucide-react";
+import { useVocabularies, useConceptHierarchy } from "../VocabularyWorkspace/queries";
+import type { ConceptNode, VocabularyScheme } from "../VocabularyWorkspace/types";
+
+function countConcepts(nodes: ConceptNode[]): number {
+  return nodes.reduce((acc, node) => {
+    return acc + 1 + countConcepts(node.children ?? []);
+  }, 0);
+}
+
+function ConceptRow({
+  concept,
+  depth,
+  onSelect,
+}: {
+  concept: ConceptNode;
+  depth: number;
+  onSelect: (concept: ConceptNode) => void;
+}) {
+  const [expanded, setExpanded] = useState(false);
+  const children = concept.children ?? [];
+  const hasChildren = children.length > 0;
+
+  return (
+    <>
+      <div
+        style={{
+          display: "flex",
+          alignItems: "center",
+          gap: 6,
+          paddingLeft: 12 + depth * 16,
+          paddingRight: 12,
+          paddingTop: 5,
+          paddingBottom: 5,
+          borderRadius: 6,
+          cursor: "pointer",
+          color: depth === 0 ? "#c6d4e3" : "#8b949e",
+          fontSize: depth === 0 ? 13 : 12,
+          transition: "background 120ms ease",
+        }}
+        onMouseEnter={(e) => { (e.currentTarget as HTMLDivElement).style.background = "rgba(74,163,255,0.07)"; }}
+        onMouseLeave={(e) => { (e.currentTarget as HTMLDivElement).style.background = "transparent"; }}
+      >
+        {hasChildren ? (
+          <button
+            onClick={() => setExpanded((v) => !v)}
+            style={{ background: "transparent", border: "none", color: "#8b949e", cursor: "pointer", padding: 0, display: "flex", alignItems: "center" }}
+          >
+            {expanded ? <ChevronDown size={12} /> : <ChevronRight size={12} />}
+          </button>
+        ) : (
+          <span style={{ width: 12, display: "inline-block" }} />
+        )}
+        <span
+          onClick={() => onSelect(concept)}
+          style={{ flex: 1, overflow: "hidden", textOverflow: "ellipsis", whiteSpace: "nowrap" }}
+        >
+          {concept.pref_label || concept.uri}
+        </span>
+        {children.length > 0 ? (
+          <span style={{ color: "#6a7f97", fontSize: 10 }}>{children.length}</span>
+        ) : null}
+      </div>
+      {expanded && hasChildren
+        ? children.map((child) => (
+            <ConceptRow key={child.uri} concept={child} depth={depth + 1} onSelect={onSelect} />
+          ))
+        : null}
+    </>
+  );
+}
+
+function SchemePanel({
+  scheme,
+  onSelectConcept,
+}: {
+  scheme: VocabularyScheme;
+  onSelectConcept: (concept: ConceptNode) => void;
+}) {
+  const [expanded, setExpanded] = useState(true);
+  const { data: hierarchy = [], isLoading } = useConceptHierarchy(scheme.uri);
+  const totalConcepts = countConcepts(hierarchy);
+
+  return (
+    <div style={schemeCardStyle}>
+      {/* Scheme header */}
+      <button
+        onClick={() => setExpanded((v) => !v)}
+        style={schemeHeaderStyle}
+      >
+        <div style={{ display: "flex", alignItems: "center", gap: 8 }}>
+          {expanded ? <ChevronDown size={14} color="#8b949e" /> : <ChevronRight size={14} color="#8b949e" />}
+          <span style={{ color: "#e6edf3", fontSize: 14, fontWeight: 700 }}>{scheme.label}</span>
+        </div>
+        <span style={{ color: "#6a7f97", fontSize: 11 }}>
+          {isLoading ? "…" : `${totalConcepts} concept${totalConcepts !== 1 ? "s" : ""}`}
+        </span>
+      </button>
+
+      {/* Concept tree */}
+      {expanded ? (
+        <div style={{ paddingTop: 4, paddingBottom: 8 }}>
+          {isLoading ? (
+            <div style={{ padding: "8px 24px", color: "#6a7f97", fontSize: 12 }}>Loading concepts…</div>
+          ) : hierarchy.length === 0 ? (
+            <div style={{ padding: "8px 24px", color: "#6a7f97", fontSize: 12, fontStyle: "italic" }}>
+              No concepts found in this scheme.
+            </div>
+          ) : (
+            hierarchy.map((concept) => (
+              <ConceptRow key={concept.uri} concept={concept} depth={0} onSelect={onSelectConcept} />
+            ))
+          )}
+        </div>
+      ) : null}
+    </div>
+  );
+}
+
+export function OntologySummaryTab({
+  onOpenVocabularyBrowser,
+}: {
+  onOpenVocabularyBrowser?: () => void;
+}) {
+  const { data: schemes = [], isLoading } = useVocabularies();
+  const [selectedConcept, setSelectedConcept] = useState<ConceptNode | null>(null);
+
+  return (
+    <div style={shellStyle}>
+      {/* Header */}
+      <div style={headerStyle}>
+        <div style={{ display: "flex", alignItems: "center", gap: 10 }}>
+          <BookOpen size={18} color="#d2a8ff" />
+          <div>
+            <div style={{ color: "#ebf3ff", fontSize: 16, fontWeight: 700 }}>Ontology Summary</div>
+            <div style={{ color: "#8b949e", fontSize: 12 }}>
+              {isLoading
+                ? "Loading schemes…"
+                : `${schemes.length} vocabulary scheme${schemes.length !== 1 ? "s" : ""} loaded`}
+            </div>
+          </div>
+        </div>
+        {onOpenVocabularyBrowser ? (
+          <button onClick={onOpenVocabularyBrowser} style={openBrowserBtnStyle}>
+            <ExternalLink size={12} />
+            <span>Open Full Browser</span>
+          </button>
+        ) : null}
+      </div>
+
+      <div style={{ flex: 1, display: "flex", overflow: "hidden" }}>
+        {/* Scheme tree column */}
+        <div style={treeColumnStyle}>
+          {isLoading ? (
+            <div style={{ padding: 24, display: "flex", flexDirection: "column", gap: 10 }}>
+              {[90, 75, 60].map((w, i) => (
+                <div key={i} style={{ height: 36, borderRadius: 8, background: "rgba(255,255,255,0.04)", width: `${w}%` }} />
+              ))}
+            </div>
+          ) : schemes.length === 0 ? (
+            <div style={emptyStateStyle}>
+              <BookOpen size={32} color="rgba(210,168,255,0.15)" />
+              <div style={{ color: "#8b949e", fontSize: 13, marginTop: 12 }}>No vocabulary schemes loaded</div>
+              <div style={{ color: "#6a7f97", fontSize: 12, marginTop: 4, textAlign: "center", maxWidth: 240 }}>
+                Import a .ttl or .rdf file via the Vocabulary Browser to see your ontology here.
+              </div>
+            </div>
+          ) : (
+            <div style={{ padding: "12px 8px", display: "flex", flexDirection: "column", gap: 8 }}>
+              {schemes.map((scheme) => (
+                <SchemePanel key={scheme.uri} scheme={scheme} onSelectConcept={setSelectedConcept} />
+              ))}
+            </div>
+          )}
+        </div>
+
+        {/* Concept detail panel */}
+        {selectedConcept ? (
+          <div style={detailPanelStyle}>
+            <div style={{ display: "flex", justifyContent: "space-between", alignItems: "flex-start", marginBottom: 16 }}>
+              <div style={{ color: "#d2a8ff", fontSize: 11, fontWeight: 700, letterSpacing: "0.06em", textTransform: "uppercase" }}>
+                Concept Detail
+              </div>
+              <button onClick={() => setSelectedConcept(null)} style={{ background: "transparent", border: "none", color: "#8b949e", cursor: "pointer", fontSize: 16 }}>×</button>
+            </div>
+
+            <h3 style={{ color: "#ffffff", fontSize: 18, fontWeight: 800, letterSpacing: "-0.03em", margin: "0 0 6px 0" }}>
+              {selectedConcept.pref_label}
+            </h3>
+            {selectedConcept.notation ? (
+              <div style={{ color: "#8b949e", fontSize: 12, marginBottom: 8 }}>Notation: {selectedConcept.notation}</div>
+            ) : null}
+            <div style={{ color: "#6a7f97", fontSize: 11, fontFamily: "monospace", wordBreak: "break-all", marginBottom: 14 }}>
+              {selectedConcept.uri}
+            </div>
+
+            {selectedConcept.description ? (
+              <div style={detailSectionStyle}>
+                <div style={detailLabelStyle}>Description</div>
+                <div style={{ color: "#c6d4e3", fontSize: 13, lineHeight: 1.6 }}>{selectedConcept.description}</div>
+              </div>
+            ) : null}
+
+            {selectedConcept.alt_labels?.length ? (
+              <div style={detailSectionStyle}>
+                <div style={detailLabelStyle}>Alternative Labels</div>
+                <div style={{ display: "flex", flexWrap: "wrap", gap: 6 }}>
+                  {selectedConcept.alt_labels.map((label) => (
+                    <span key={label} style={altLabelChipStyle}>{label}</span>
+                  ))}
+                </div>
+              </div>
+            ) : null}
+
+            {(selectedConcept.children?.length ?? 0) > 0 ? (
+              <div style={detailSectionStyle}>
+                <div style={detailLabelStyle}>Narrower Concepts ({selectedConcept.children!.length})</div>
+                <div style={{ display: "flex", flexDirection: "column", gap: 4 }}>
+                  {selectedConcept.children!.slice(0, 8).map((child) => (
+                    <div
+                      key={child.uri}
+                      onClick={() => setSelectedConcept(child)}
+                      style={{ color: "#79c0ff", fontSize: 12, cursor: "pointer", padding: "3px 0" }}
+                    >
+                      → {child.pref_label}
+                    </div>
+                  ))}
+                  {selectedConcept.children!.length > 8 ? (
+                    <div style={{ color: "#6a7f97", fontSize: 11 }}>+{selectedConcept.children!.length - 8} more</div>
+                  ) : null}
+                </div>
+              </div>
+            ) : null}
+          </div>
+        ) : null}
+      </div>
+    </div>
+  );
+}
+
+/* ─── styles ─────────────────────────────────────────────────────── */
+
+const shellStyle: React.CSSProperties = {
+  display: "flex",
+  flexDirection: "column",
+  width: "100%",
+  height: "100%",
+  background: "#0d1117",
+  overflow: "hidden",
+};
+
+const headerStyle: React.CSSProperties = {
+  display: "flex",
+  alignItems: "center",
+  justifyContent: "space-between",
+  padding: "20px 24px 16px",
+  borderBottom: "1px solid rgba(88,166,255,0.1)",
+  flexShrink: 0,
+};
+
+const openBrowserBtnStyle: React.CSSProperties = {
+  display: "inline-flex",
+  alignItems: "center",
+  gap: 6,
+  padding: "6px 12px",
+  borderRadius: 8,
+  border: "1px solid rgba(210,168,255,0.22)",
+  background: "rgba(210,168,255,0.08)",
+  color: "#d2a8ff",
+  fontSize: 12,
+  fontWeight: 600,
+  cursor: "pointer",
+};
+
+const treeColumnStyle: React.CSSProperties = {
+  flex: 1,
+  overflowY: "auto",
+  borderRight: "1px solid rgba(255,255,255,0.06)",
+};
+
+const schemeCardStyle: React.CSSProperties = {
+  borderRadius: 10,
+  border: "1px solid rgba(210,168,255,0.1)",
+  background: "rgba(255,255,255,0.02)",
+  overflow: "hidden",
+};
+
+const schemeHeaderStyle: React.CSSProperties = {
+  width: "100%",
+  display: "flex",
+  alignItems: "center",
+  justifyContent: "space-between",
+  padding: "10px 14px",
+  background: "transparent",
+  border: "none",
+  cursor: "pointer",
+  borderBottom: "1px solid rgba(255,255,255,0.05)",
+};
+
+const detailPanelStyle: React.CSSProperties = {
+  width: 300,
+  padding: "20px",
+  overflowY: "auto",
+  borderLeft: "1px solid rgba(255,255,255,0.06)",
+  flexShrink: 0,
+};
+
+const detailSectionStyle: React.CSSProperties = {
+  marginTop: 14,
+  paddingTop: 12,
+  borderTop: "1px solid rgba(255,255,255,0.06)",
+};
+
+const detailLabelStyle: React.CSSProperties = {
+  color: "#8b949e",
+  fontSize: 10,
+  fontWeight: 700,
+  textTransform: "uppercase",
+  letterSpacing: "0.07em",
+  marginBottom: 6,
+};
+
+const altLabelChipStyle: React.CSSProperties = {
+  padding: "3px 8px",
+  borderRadius: 999,
+  background: "rgba(255,255,255,0.05)",
+  border: "1px solid rgba(255,255,255,0.08)",
+  color: "#8fa8c6",
+  fontSize: 11,
+};
+
+const emptyStateStyle: React.CSSProperties = {
+  display: "flex",
+  flexDirection: "column",
+  alignItems: "center",
+  justifyContent: "center",
+  padding: 40,
+  height: "100%",
+};

explorer/vite.config.ts

@@ -1,13 +1,15 @@
 import { defineConfig } from 'vite'
-import react, { reactCompilerPreset } from '@vitejs/plugin-react'
-import babel from '@rolldown/plugin-babel'
+import react from '@vitejs/plugin-react'
 import path from 'path'
 
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [
-    react(),
-    babel({ presets: [reactCompilerPreset()] })
+    react({
+      babel: {
+        plugins: ['babel-plugin-react-compiler'],
+      },
+    }),
   ],
  
   base: '/',

integrations/openclaw/README.md

@@ -0,0 +1,137 @@
+# Semantica × OpenClaw Integration
+
+Connect [OpenClaw](https://openclaw.ai) — the open-source personal AI agent — to Semantica's full knowledge-graph and decision-intelligence stack.
+
+Two integration paths are available:
+
+| Path | When to use |
+|---|---|
+| **MCP (recommended)** | OpenClaw Gateway is running; zero extra code needed |
+| **REST / native tool** | Embedding Semantica directly in a SOUL.md agent config |
+
+---
+
+## Path 1 — MCP Server (recommended)
+
+### 1. Start the Semantica MCP server
+
+```bash
+python -m semantica.mcp_server
+```
+
+### 2. Add to `mcporter.json`
+
+```json
+{
+  "mcpServers": {
+    "semantica": {
+      "command": "python",
+      "args": ["-m", "semantica.mcp_server"],
+      "transport": "stdio"
+    }
+  }
+}
+```
+
+### 3. Restart the OpenClaw Gateway
+
+```bash
+openclaw gateway restart
+```
+
+All **12 Semantica tools** are now available to any OpenClaw agent:
+
+| Tool | What it does |
+|---|---|
+| `extract_entities` | Named entity recognition from text |
+| `extract_relations` | Relation / triplet extraction from text |
+| `record_decision` | Record a decision with causal links |
+| `query_decisions` | Search recorded decisions |
+| `find_precedents` | Find past decisions similar to a query |
+| `get_causal_chain` | Trace cause-effect chains from a node |
+| `add_entity` | Add a node to the knowledge graph |
+| `add_relationship` | Add an edge between two nodes |
+| `run_reasoning` | Forward-chain rules over facts |
+| `get_graph_analytics` | Centrality, communities, topology stats |
+| `export_graph` | Export graph (JSON, RDF, GraphML, …) |
+| `get_graph_summary` | High-level graph overview |
+
+**3 resources** are also exposed: `semantica://graph/summary`, `semantica://decisions/list`, `semantica://schema/info`.
+
+---
+
+## Path 2 — Native Tool (REST)
+
+Use `OpenClawKGTool` when you prefer a direct Python integration without the MCP gateway.
+
+### Install
+
+```bash
+pip install semantica[openclaw]   # pulls in 'requests'
+```
+
+### Quick start
+
+```python
+from integrations.openclaw import OpenClawKGTool
+
+tool = OpenClawKGTool(base_url="http://localhost:8000")
+
+# Extract knowledge from text
+entities = tool.extract_entities("OpenClaw is an open-source AI agent built in Python.")
+relations = tool.extract_relations("Alice manages the OpenClaw project at Hawksight.")
+
+# Record and query decisions
+tool.record_decision("Deploy model v2 to production", context="latency improved by 40%")
+precedents = tool.find_precedents("roll back production deployment")
+
+# Graph analytics
+summary = tool.get_graph_summary()
+analytics = tool.get_graph_analytics()
+
+# Export
+ttl = tool.export_graph(fmt="ttl")
+```
+
+### Generate `mcporter.json` programmatically
+
+```python
+from integrations.openclaw import OpenClawMCPConfig
+
+cfg = OpenClawMCPConfig()
+print(cfg.to_json())   # → paste into mcporter.json
+```
+
+---
+
+## SOUL.md agent snippet
+
+Add Semantica to any OpenClaw agent by referencing the tool in your `SOUL.md`:
+
+```markdown
+## Tools
+
+- name: semantica_kg
+  description: >
+    Semantica knowledge-graph tool. Supports entity extraction, decision
+    recording, graph querying, causal chain analysis, reasoning, and
+    multi-format export.
+  endpoint: http://localhost:8000
+  auth: none
+
+## Instructions
+
+You have access to `semantica_kg`. Use it to:
+- Extract entities and relations from any text the user provides.
+- Record important decisions and retrieve precedents before recommending actions.
+- Run graph analytics and export results when the user asks for a summary.
+```
+
+---
+
+## Requirements
+
+- Python 3.8+
+- `pip install semantica` (core)
+- `pip install semantica[openclaw]` (adds `requests` for the REST path)
+- OpenClaw ≥ latest — [openclaw.ai](https://openclaw.ai)

integrations/openclaw/__init__.py

@@ -0,0 +1,57 @@
+"""
+Semantica × OpenClaw Integration
+==================================
+
+First-class integration between the Semantica semantic intelligence stack and
+`OpenClaw <https://openclaw.ai>`_ — the open-source personal AI agent platform.
+
+OpenClaw connects to external tools via MCP (Model Context Protocol).  This
+integration exposes the full Semantica MCP surface (12 tools, 3 resources) to
+any OpenClaw agent and also ships a lightweight ``OpenClawKGTool`` that can be
+dropped directly into an OpenClaw SOUL.md tool-list as a native tool.
+
+Public surface
+--------------
+OpenClawKGTool      — Thin wrapper around the Semantica REST API usable as an
+                       OpenClaw native tool (no MCP gateway required)
+OpenClawMCPConfig   — Helper that emits the ``mcporter.json`` snippet needed to
+                       wire Semantica's MCP server into an OpenClaw gateway
+
+Quick start
+-----------
+    pip install semantica
+
+    >>> from integrations.openclaw import OpenClawKGTool, OpenClawMCPConfig
+    >>> print(OpenClawMCPConfig().to_json())   # paste into mcporter.json
+    >>> tool = OpenClawKGTool(base_url="http://localhost:8000")
+    >>> result = tool.extract("OpenClaw is an open-source AI agent framework.")
+
+MCP quick start
+---------------
+Run the Semantica MCP server once::
+
+    python -m semantica.mcp_server
+
+Then add the printed config snippet to your OpenClaw ``mcporter.json`` and
+restart the OpenClaw Gateway::
+
+    openclaw gateway restart
+
+All 12 Semantica tools are then available as native OpenClaw agent tools.
+
+Compatibility
+-------------
+Requires ``semantica >= 0.3.0``.  The MCP path requires ``python >= 3.8`` and
+a running ``semantica.mcp_server`` instance.  The REST path requires a running
+``semantica.server`` instance (``python -m semantica.server``, port 8000 by
+default).
+"""
+
+from .mcp_tool import OpenClawKGTool, OpenClawMCPConfig
+
+__all__ = [
+    "OpenClawKGTool",
+    "OpenClawMCPConfig",
+]
+
+__version__ = "0.1.0"

integrations/openclaw/mcp_tool.py

@@ -0,0 +1,253 @@
+"""
+OpenClaw ↔ Semantica bridge
+============================
+
+Two integration paths:
+
+1. **MCP (recommended)** — ``OpenClawMCPConfig`` emits the ``mcporter.json``
+   snippet that wires Semantica's MCP server into the OpenClaw Gateway.
+   All 12 Semantica MCP tools become native OpenClaw agent tools with no
+   extra code.
+
+2. **REST** — ``OpenClawKGTool`` is a plain Python class that calls the
+   Semantica REST API (port 8000) and can be registered as an OpenClaw
+   native tool via SOUL.md ``tools:`` entries.
+"""
+
+from __future__ import annotations
+
+import json
+from typing import Any, Dict, List, Optional
+
+
+# ---------------------------------------------------------------------------
+# MCP config helper
+# ---------------------------------------------------------------------------
+
+class OpenClawMCPConfig:
+    """
+    Generates the ``mcporter.json`` entry needed to connect Semantica's MCP
+    server to the OpenClaw Gateway.
+
+    Parameters
+    ----------
+    server_command:
+        Shell command used to launch the Semantica MCP server.
+        Defaults to ``"python -m semantica.mcp_server"``.
+    transport:
+        MCP transport protocol.  OpenClaw supports ``"stdio"`` (default)
+        and ``"sse"``.
+    name:
+        Key used in ``mcporter.json``.  Defaults to ``"semantica"``.
+
+    Example
+    -------
+    >>> cfg = OpenClawMCPConfig()
+    >>> print(cfg.to_json())
+    # → paste into ~/.openclaw/mcporter.json, then:
+    # → openclaw gateway restart
+    """
+
+    def __init__(
+        self,
+        server_command: str = "python -m semantica.mcp_server",
+        transport: str = "stdio",
+        name: str = "semantica",
+    ) -> None:
+        self.server_command = server_command
+        self.transport = transport
+        self.name = name
+
+    def to_dict(self) -> Dict[str, Any]:
+        """Return the config as a plain dict."""
+        parts = self.server_command.split()
+        return {
+            "mcpServers": {
+                self.name: {
+                    "command": parts[0],
+                    "args": parts[1:],
+                    "transport": self.transport,
+                }
+            }
+        }
+
+    def to_json(self, indent: int = 2) -> str:
+        """Return the config as a JSON string."""
+        return json.dumps(self.to_dict(), indent=indent)
+
+    def __repr__(self) -> str:  # pragma: no cover
+        return f"OpenClawMCPConfig(name={self.name!r}, transport={self.transport!r})"
+
+
+# ---------------------------------------------------------------------------
+# REST-based native tool
+# ---------------------------------------------------------------------------
+
+class OpenClawKGTool:
+    """
+    A Semantica knowledge-graph tool callable from an OpenClaw agent.
+
+    Wraps the Semantica REST API so that an OpenClaw agent configured with
+    this tool (via SOUL.md ``tools:`` entries or programmatic registration)
+    can extract entities, record decisions, query the graph, and more —
+    without requiring the MCP gateway.
+
+    Parameters
+    ----------
+    base_url:
+        Base URL of the running Semantica REST server.
+        Defaults to ``"http://localhost:8000"``.
+    timeout:
+        Request timeout in seconds.  Defaults to ``30``.
+
+    Notes
+    -----
+    ``requests`` is used for HTTP calls.  It is listed as an optional
+    dependency under ``semantica[openclaw]``; install it with::
+
+        pip install semantica[openclaw]
+    """
+
+    TOOL_NAME = "semantica_kg"
+    TOOL_DESCRIPTION = (
+        "Semantica knowledge-graph tool. "
+        "Supports entity extraction, decision recording, graph querying, "
+        "causal chain analysis, reasoning, and multi-format export."
+    )
+
+    def __init__(self, base_url: str = "http://localhost:8000", timeout: int = 30) -> None:
+        self.base_url = base_url.rstrip("/")
+        self.timeout = timeout
+        self._session: Any = None
+
+    # ------------------------------------------------------------------
+    # Internal helpers
+    # ------------------------------------------------------------------
+
+    def _get_session(self) -> Any:
+        if self._session is None:
+            try:
+                import requests
+                self._session = requests.Session()
+            except ImportError as exc:
+                raise ImportError(
+                    "The 'requests' package is required for OpenClawKGTool. "
+                    "Install it with: pip install semantica[openclaw]"
+                ) from exc
+        return self._session
+
+    def _post(self, endpoint: str, payload: Dict[str, Any]) -> Dict[str, Any]:
+        session = self._get_session()
+        url = f"{self.base_url}{endpoint}"
+        response = session.post(url, json=payload, timeout=self.timeout)
+        response.raise_for_status()
+        return response.json()
+
+    def _get(self, endpoint: str, params: Optional[Dict[str, Any]] = None) -> Dict[str, Any]:
+        session = self._get_session()
+        url = f"{self.base_url}{endpoint}"
+        response = session.get(url, params=params or {}, timeout=self.timeout)
+        response.raise_for_status()
+        return response.json()
+
+    # ------------------------------------------------------------------
+    # Extraction
+    # ------------------------------------------------------------------
+
+    def extract(self, text: str) -> Dict[str, Any]:
+        """Extract entities and relations from *text*."""
+        return self._post("/extract", {"text": text})
+
+    def extract_entities(self, text: str) -> List[Dict[str, Any]]:
+        """Return only the entity list from *text*."""
+        result = self.extract(text)
+        return result.get("entities", [])
+
+    def extract_relations(self, text: str) -> List[Dict[str, Any]]:
+        """Return only the relation list from *text*."""
+        result = self.extract(text)
+        return result.get("relations", [])
+
+    # ------------------------------------------------------------------
+    # Graph mutation
+    # ------------------------------------------------------------------
+
+    def add_entity(self, label: str, entity_type: str = "Entity", **properties: Any) -> Dict[str, Any]:
+        """Add a node to the knowledge graph."""
+        return self._post("/entities", {"label": label, "type": entity_type, **properties})
+
+    def add_relationship(
+        self,
+        source: str,
+        target: str,
+        relation_type: str,
+        **properties: Any,
+    ) -> Dict[str, Any]:
+        """Add an edge between *source* and *target*."""
+        return self._post(
+            "/relationships",
+            {"source": source, "target": target, "type": relation_type, **properties},
+        )
+
+    # ------------------------------------------------------------------
+    # Decisions
+    # ------------------------------------------------------------------
+
+    def record_decision(
+        self,
+        decision_text: str,
+        context: Optional[str] = None,
+        **metadata: Any,
+    ) -> Dict[str, Any]:
+        """Record a decision in the graph."""
+        payload: Dict[str, Any] = {"decision": decision_text}
+        if context:
+            payload["context"] = context
+        payload.update(metadata)
+        return self._post("/decisions", payload)
+
+    def query_decisions(self, query: str, limit: int = 10) -> List[Dict[str, Any]]:
+        """Search recorded decisions."""
+        result = self._get("/decisions/search", {"q": query, "limit": limit})
+        return result.get("decisions", [])
+
+    def find_precedents(self, decision_text: str, top_k: int = 5) -> List[Dict[str, Any]]:
+        """Find past decisions similar to *decision_text*."""
+        result = self._post("/decisions/precedents", {"decision": decision_text, "top_k": top_k})
+        return result.get("precedents", [])
+
+    # ------------------------------------------------------------------
+    # Analytics & reasoning
+    # ------------------------------------------------------------------
+
+    def get_causal_chain(self, node_id: str, depth: int = 3) -> Dict[str, Any]:
+        """Retrieve the causal chain rooted at *node_id*."""
+        return self._get("/causal-chain", {"node_id": node_id, "depth": depth})
+
+    def run_reasoning(self, rules: List[str], facts: List[str]) -> Dict[str, Any]:
+        """Run the Semantica forward-chaining reasoner."""
+        return self._post("/reason", {"rules": rules, "facts": facts})
+
+    def get_graph_analytics(self) -> Dict[str, Any]:
+        """Return graph-level analytics (centrality, communities, etc.)."""
+        return self._get("/analytics")
+
+    # ------------------------------------------------------------------
+    # Export
+    # ------------------------------------------------------------------
+
+    def export_graph(self, fmt: str = "json") -> str:
+        """Export the graph in *fmt* (``json``, ``ttl``, ``graphml``, …)."""
+        result = self._get("/export", {"format": fmt})
+        return result.get("data", "")
+
+    # ------------------------------------------------------------------
+    # Summary
+    # ------------------------------------------------------------------
+
+    def get_graph_summary(self) -> Dict[str, Any]:
+        """Return a high-level summary of the current graph."""
+        return self._get("/graph/summary")
+
+    def __repr__(self) -> str:  # pragma: no cover
+        return f"OpenClawKGTool(base_url={self.base_url!r})"

mcp/README.md

@@ -0,0 +1,242 @@
+# Semantica MCP Server
+
+A fully modular [Model Context Protocol](https://modelcontextprotocol.io/) server for the Semantica knowledge graph.  
+Connects Claude Code, Cursor, Windsurf, Cline, Continue, VS Code (GitHub Copilot), and any other MCP-compatible AI tool directly to your Semantica graph.
+
+---
+
+## Quick start
+
+```bash
+# From the repo root
+pip install -e ".[mcp]"
+
+# Test the server (type a JSON-RPC request, press Enter)
+python -m mcp
+```
+
+Or point your AI tool at it (see per-tool configs below).
+
+---
+
+## Transport
+
+**stdio** — the server reads newline-delimited JSON-RPC 2.0 from `stdin` and writes responses to `stdout`.  
+Log/debug output goes to `stderr` only.
+
+```
+python -m mcp [--debug]
+```
+
+---
+
+## Tools (17 total)
+
+### Extraction
+
+| Tool | Description |
+|---|---|
+| `extract_entities` | Named entity recognition (NER) — people, places, orgs, concepts |
+| `extract_relations` | Relation extraction + (subject, predicate, object) triplets |
+| `extract_all` | Full pipeline: NER + coreference + relations + events + triplets |
+
+### Decision Intelligence
+
+| Tool | Description |
+|---|---|
+| `record_decision` | Record a decision with context, confidence, causal links |
+| `query_decisions` | Query decisions by natural language or structured filters |
+| `find_precedents` | Find past decisions similar to a scenario (hybrid similarity) |
+| `get_causal_chain` | Trace upstream/downstream causal chain from a decision |
+| `analyze_decision_impact` | Analyse downstream influence of a decision |
+
+### Knowledge Graph
+
+| Tool | Description |
+|---|---|
+| `add_entity` | Add a node/entity to the graph |
+| `add_relationship` | Add a directed edge between two entities |
+| `search_graph` | Search nodes by label or ID substring |
+| `get_graph_summary` | Node/edge counts, decision count, type breakdown |
+| `get_graph_analytics` | PageRank, betweenness, degree centrality, community detection |
+
+### Reasoning
+
+| Tool | Description |
+|---|---|
+| `run_reasoning` | Forward-chaining IF/THEN rules over facts |
+| `abductive_reasoning` | Generate plausible hypotheses for observations |
+
+### Export & Provenance
+
+| Tool | Description |
+|---|---|
+| `export_graph` | Export graph to JSON, CSV, GraphML, Parquet, Turtle, N-Triples, RDF/XML, JSON-LD |
+| `get_provenance` | Audit history and source lineage for a node |
+
+---
+
+## Resources (4 total)
+
+| URI | Description |
+|---|---|
+| `semantica://graph/summary` | Live node/edge counts and type breakdown |
+| `semantica://decisions/list` | Most recent 50 decisions |
+| `semantica://schema/info` | Schema version, node/edge types, tool names |
+| `semantica://ontology/schema` | Full ontology schema |
+
+---
+
+## Per-tool configuration
+
+### Claude Code (`~/.claude/settings.json`)
+
+```json
+{
+  "mcpServers": {
+    "semantica": {
+      "command": "python",
+      "args": ["-m", "mcp"],
+      "cwd": "/path/to/semantica"
+    }
+  }
+}
+```
+
+Or use the plugin bundle:
+```bash
+claude mcp add semantica python -m mcp --cwd /path/to/semantica
+```
+
+---
+
+### Cursor (`~/.cursor/mcp.json`)
+
+```json
+{
+  "mcpServers": {
+    "semantica": {
+      "command": "python",
+      "args": ["-m", "mcp"],
+      "cwd": "/path/to/semantica"
+    }
+  }
+}
+```
+
+---
+
+### Windsurf (`~/.codeium/windsurf/mcp_config.json`)
+
+```json
+{
+  "mcpServers": {
+    "semantica": {
+      "command": "python",
+      "args": ["-m", "mcp"],
+      "cwd": "/path/to/semantica"
+    }
+  }
+}
+```
+
+---
+
+### Cline (VS Code extension settings)
+
+In your VS Code `settings.json`:
+
+```json
+{
+  "cline.mcpServers": {
+    "semantica": {
+      "command": "python",
+      "args": ["-m", "mcp"],
+      "cwd": "/path/to/semantica"
+    }
+  }
+}
+```
+
+---
+
+### Continue (`~/.continue/config.json`)
+
+```json
+{
+  "mcpServers": [
+    {
+      "name": "semantica",
+      "command": "python",
+      "args": ["-m", "mcp"],
+      "cwd": "/path/to/semantica"
+    }
+  ]
+}
+```
+
+---
+
+### VS Code (GitHub Copilot) — `.vscode/mcp.json`
+
+```json
+{
+  "servers": {
+    "semantica": {
+      "type": "stdio",
+      "command": "python",
+      "args": ["-m", "mcp"],
+      "cwd": "${workspaceFolder}"
+    }
+  }
+}
+```
+
+---
+
+### Amazon Q Developer
+
+Add to your Q Developer MCP config:
+
+```json
+{
+  "mcpServers": {
+    "semantica": {
+      "command": "python",
+      "args": ["-m", "mcp"],
+      "cwd": "/path/to/semantica"
+    }
+  }
+}
+```
+
+---
+
+## Environment variables
+
+| Variable | Default | Description |
+|---|---|---|
+| `SEMANTICA_KG_PATH` | *(in-memory)* | Path to persist/load the graph (JSON file) |
+
+---
+
+## Package structure
+
+```
+mcp/
+├── __init__.py          # Package entry, re-exports SemanticaMCPServer + main
+├── __main__.py          # python -m mcp entry point
+├── server.py            # SemanticaMCPServer class + stdio event loop
+├── session.py           # Lazy ContextGraph singleton (get_graph / reset_graph)
+├── schemas.py           # JSON Schema definitions for all tool inputs
+├── tools/
+│   ├── __init__.py      # Assembles TOOL_DEFINITIONS list
+│   ├── extraction.py    # NER, relation extraction, full pipeline
+│   ├── decisions.py     # Record, query, precedents, causal chain, impact
+│   ├── graph.py         # Add entity/relationship, search, summary, analytics
+│   ├── reasoning.py     # Forward-chaining rules, abductive hypotheses
+│   └── export.py        # Graph export (multi-format) + provenance
+└── resources/
+    ├── __init__.py      # Re-exports RESOURCE_DEFINITIONS + handle_resource_read
+    └── registry.py      # URI → handler map for the 4 semantica:// resources
+```

mcp/__init__.py

@@ -0,0 +1,27 @@
+"""
+Semantica MCP Server Package
+
+A full Model Context Protocol (MCP) server for Semantica — exposes knowledge graph
+construction, semantic extraction, decision intelligence, reasoning, analytics,
+and export capabilities as MCP tools and resources.
+
+Run the server:
+    python -m mcp.server        # from repo root
+    python -m semantica.mcp_server  # alias inside installed package
+
+Configure in Claude Desktop, Windsurf, Cline, Continue, VS Code:
+    {
+        "mcpServers": {
+            "semantica": {
+                "command": "python",
+                "args": ["-m", "mcp.server"],
+                "cwd": "/path/to/semantica"
+            }
+        }
+    }
+"""
+
+from .server import SemanticaMCPServer, main
+
+__all__ = ["SemanticaMCPServer", "main"]
+__version__ = "0.4.0"

mcp/__main__.py

@@ -0,0 +1,5 @@
+"""Entry point: python -m mcp.server"""
+from mcp.server import main
+
+if __name__ == "__main__":
+    main()

mcp/resources/__init__.py

@@ -0,0 +1,8 @@
+"""
+MCP resource registry — static and dynamic resources exposed via resources/list
+and resources/read.
+"""
+
+from .registry import RESOURCE_DEFINITIONS, handle_resource_read
+
+__all__ = ["RESOURCE_DEFINITIONS", "handle_resource_read"]

mcp/resources/registry.py

@@ -0,0 +1,153 @@
+"""
+Resource handlers for Semantica MCP resources.
+
+Each resource maps a semantica:// URI to a callable that returns
+{"uri": ..., "mimeType": ..., "text": ...}.
+"""
+
+from __future__ import annotations
+
+import json
+import logging
+
+from mcp.session import get_graph
+
+log = logging.getLogger("semantica.mcp.resources")
+
+
+def _read_graph_summary(uri: str) -> dict:
+    try:
+        graph = get_graph()
+        all_nodes = list(graph.find_nodes())
+        node_types: dict[str, int] = {}
+        for n in all_nodes:
+            t = str(n.get("type", "Unknown"))
+            node_types[t] = node_types.get(t, 0) + 1
+        edge_count = 0
+        if hasattr(graph, "edge_count"):
+            try:
+                edge_count = graph.edge_count()
+            except Exception as exc:
+                log.debug("Unable to read graph edge_count(); defaulting to 0: %s", exc)
+        data = {
+            "node_count": len(all_nodes),
+            "edge_count": edge_count,
+            "node_types": node_types,
+        }
+    except Exception as exc:
+        data = {"error": str(exc)}
+    return {"uri": uri, "mimeType": "application/json", "text": json.dumps(data, indent=2)}
+
+
+def _read_decisions_list(uri: str) -> dict:
+    try:
+        graph = get_graph()
+        nodes = list(graph.find_nodes(node_type="decision"))
+        decisions = [
+            {
+                "id": n.get("id"),
+                "category": n.get("category"),
+                "outcome": n.get("outcome"),
+                "scenario": str(n.get("scenario", ""))[:120],
+            }
+            for n in nodes[:50]
+        ]
+        data = {"decisions": decisions, "count": len(decisions)}
+    except Exception as exc:
+        data = {"error": str(exc), "decisions": []}
+    return {"uri": uri, "mimeType": "application/json", "text": json.dumps(data, indent=2)}
+
+
+def _read_schema_info(uri: str) -> dict:
+    info = {
+        "version": "0.4.0",
+        "node_types": [
+            "Entity", "decision", "Decision", "Event", "Concept",
+            "Person", "Organisation", "Location",
+        ],
+        "edge_types": [
+            "RELATED_TO", "CAUSED_BY", "LEADS_TO", "PART_OF",
+            "INSTANCE_OF", "SIMILAR_TO",
+        ],
+        "tools": [
+            "extract_entities", "extract_relations", "extract_all",
+            "record_decision", "query_decisions", "find_precedents",
+            "get_causal_chain", "analyze_decision_impact",
+            "add_entity", "add_relationship", "search_graph",
+            "get_graph_summary", "get_graph_analytics",
+            "run_reasoning", "abductive_reasoning",
+            "export_graph", "get_provenance",
+        ],
+    }
+    return {"uri": uri, "mimeType": "application/json", "text": json.dumps(info, indent=2)}
+
+
+def _read_ontology_schema(uri: str) -> dict:
+    try:
+        graph = get_graph()
+        try:
+            from semantica.ontology import OntologyManager
+            mgr = OntologyManager(graph_store=graph)
+            schema = mgr.get_schema()
+            text = json.dumps(schema, indent=2) if isinstance(schema, dict) else str(schema)
+        except (ImportError, AttributeError):
+            text = json.dumps({"message": "Ontology manager not available"}, indent=2)
+    except Exception as exc:
+        text = json.dumps({"error": str(exc)}, indent=2)
+    return {"uri": uri, "mimeType": "application/json", "text": text}
+
+
+# Map URI → handler
+_HANDLERS: dict[str, object] = {
+    "semantica://graph/summary": _read_graph_summary,
+    "semantica://decisions/list": _read_decisions_list,
+    "semantica://schema/info": _read_schema_info,
+    "semantica://ontology/schema": _read_ontology_schema,
+}
+
+RESOURCE_DEFINITIONS = [
+    {
+        "uri": "semantica://graph/summary",
+        "name": "Graph Summary",
+        "description": "High-level summary of the current knowledge graph: node/edge counts and type breakdown.",
+        "mimeType": "application/json",
+    },
+    {
+        "uri": "semantica://decisions/list",
+        "name": "Decision List",
+        "description": "Most recent decisions recorded in the knowledge graph (up to 50).",
+        "mimeType": "application/json",
+    },
+    {
+        "uri": "semantica://schema/info",
+        "name": "Schema Info",
+        "description": "Semantica schema version, supported node/edge types, and available tool names.",
+        "mimeType": "application/json",
+    },
+    {
+        "uri": "semantica://ontology/schema",
+        "name": "Ontology Schema",
+        "description": "Full ontology schema from the OntologyManager (concept hierarchy and constraints).",
+        "mimeType": "application/json",
+    },
+]
+
+
+def handle_resource_read(uri: str) -> dict:
+    """Dispatch a resources/read request to the appropriate handler."""
+    handler = _HANDLERS.get(uri)
+    if handler is None:
+        return {
+            "uri": uri,
+            "mimeType": "application/json",
+            "text": json.dumps({"error": f"Unknown resource URI: {uri}"}),
+        }
+    try:
+        return handler(uri)  # type: ignore[call-arg]
+    except Exception as exc:
+        log.exception("resource_read failed for %s", uri)
+        return {
+            "uri": uri,
+            "mimeType": "application/json",
+            "text": json.dumps({"error": str(exc)}),
+        }

mcp/schemas.py

@@ -0,0 +1,292 @@
+"""
+Input schema definitions for all MCP tools.
+
+Each entry is the JSON Schema object placed in the tool's ``inputSchema``
+field.  Keeping them here avoids duplication across tool modules.
+"""
+
+EXTRACTION_TEXT = {
+    "type": "object",
+    "properties": {
+        "text": {
+            "type": "string",
+            "description": "Input text to process",
+        }
+    },
+    "required": ["text"],
+}
+
+EXTRACT_ENTITIES = EXTRACTION_TEXT
+
+EXTRACT_RELATIONS = EXTRACTION_TEXT
+
+EXTRACT_ALL = {
+    "type": "object",
+    "properties": {
+        "text": {"type": "string", "description": "Input text to process"},
+        "include_events": {
+            "type": "boolean",
+            "description": "Also extract events (default: true)",
+        },
+        "include_triplets": {
+            "type": "boolean",
+            "description": "Also extract (subject, predicate, object) triplets (default: true)",
+        },
+    },
+    "required": ["text"],
+}
+
+RECORD_DECISION = {
+    "type": "object",
+    "properties": {
+        "category": {
+            "type": "string",
+            "description": "Decision category, e.g. 'loan_approval', 'deployment'",
+        },
+        "scenario": {
+            "type": "string",
+            "description": "Natural-language description of the situation",
+        },
+        "reasoning": {
+            "type": "string",
+            "description": "Explanation of why this decision was made",
+        },
+        "outcome": {
+            "type": "string",
+            "description": "Decision result, e.g. 'approved', 'rejected', 'deferred'",
+        },
+        "confidence": {
+            "type": "number",
+            "minimum": 0,
+            "maximum": 1,
+            "description": "Confidence score between 0 and 1",
+        },
+        "decision_maker": {
+            "type": "string",
+            "description": "Who or what made the decision (default: mcp_client)",
+        },
+        "valid_from": {
+            "type": "string",
+            "description": "ISO 8601 validity start date (optional)",
+        },
+        "valid_until": {
+            "type": "string",
+            "description": "ISO 8601 validity end date (optional)",
+        },
+    },
+    "required": ["category", "scenario", "reasoning", "outcome", "confidence"],
+}
+
+QUERY_DECISIONS = {
+    "type": "object",
+    "properties": {
+        "query": {
+            "type": "string",
+            "description": "Natural language query (optional)",
+        },
+        "category": {
+            "type": "string",
+            "description": "Filter by exact category (optional)",
+        },
+        "outcome": {
+            "type": "string",
+            "description": "Filter by outcome value (optional)",
+        },
+        "limit": {
+            "type": "integer",
+            "minimum": 1,
+            "maximum": 200,
+            "description": "Maximum number of results (default: 10)",
+        },
+    },
+}
+
+FIND_PRECEDENTS = {
+    "type": "object",
+    "properties": {
+        "scenario": {
+            "type": "string",
+            "description": "Scenario description to find similar past decisions for",
+        },
+        "max_results": {
+            "type": "integer",
+            "minimum": 1,
+            "maximum": 50,
+            "description": "Maximum number of precedents to return (default: 5)",
+        },
+    },
+    "required": ["scenario"],
+}
+
+GET_CAUSAL_CHAIN = {
+    "type": "object",
+    "properties": {
+        "decision_id": {
+            "type": "string",
+            "description": "ID of the decision to trace",
+        },
+        "direction": {
+            "type": "string",
+            "enum": ["upstream", "downstream", "both"],
+            "description": "Trace direction (default: downstream)",
+        },
+        "max_depth": {
+            "type": "integer",
+            "minimum": 1,
+            "maximum": 20,
+            "description": "Maximum chain depth (default: 5)",
+        },
+    },
+    "required": ["decision_id"],
+}
+
+ANALYZE_DECISION_IMPACT = {
+    "type": "object",
+    "properties": {
+        "decision_id": {
+            "type": "string",
+            "description": "ID of the decision to analyse",
+        },
+    },
+    "required": ["decision_id"],
+}
+
+ADD_ENTITY = {
+    "type": "object",
+    "properties": {
+        "id": {
+            "type": "string",
+            "description": "Unique node identifier",
+        },
+        "label": {
+            "type": "string",
+            "description": "Human-readable label (defaults to id)",
+        },
+        "type": {
+            "type": "string",
+            "description": "Node type, e.g. 'Person', 'Organisation', 'Concept'",
+        },
+        "metadata": {
+            "type": "object",
+            "description": "Additional key-value properties",
+        },
+    },
+    "required": ["id"],
+}
+
+ADD_RELATIONSHIP = {
+    "type": "object",
+    "properties": {
+        "source": {
+            "type": "string",
+            "description": "Source node ID",
+        },
+        "target": {
+            "type": "string",
+            "description": "Target node ID",
+        },
+        "type": {
+            "type": "string",
+            "description": "Relationship type, e.g. 'WORKS_AT', 'CAUSED_BY'",
+        },
+        "metadata": {
+            "type": "object",
+            "description": "Additional edge properties",
+        },
+    },
+    "required": ["source", "target"],
+}
+
+SEARCH_GRAPH = {
+    "type": "object",
+    "properties": {
+        "query": {
+            "type": "string",
+            "description": "Search term or phrase",
+        },
+        "node_type": {
+            "type": "string",
+            "description": "Filter by node type (optional)",
+        },
+        "limit": {
+            "type": "integer",
+            "description": "Max results (default: 20)",
+        },
+    },
+    "required": ["query"],
+}
+
+RUN_REASONING = {
+    "type": "object",
+    "properties": {
+        "facts": {
+            "type": "array",
+            "items": {"type": "string"},
+            "description": "Fact strings, e.g. ['Person(John)', 'Employee(John)']",
+        },
+        "rules": {
+            "type": "array",
+            "items": {"type": "string"},
+            "description": "IF/THEN rule strings, e.g. ['IF Employee(?x) THEN Worker(?x)']",
+        },
+    },
+    "required": ["facts", "rules"],
+}
+
+ABDUCTIVE_REASONING = {
+    "type": "object",
+    "properties": {
+        "observations": {
+            "type": "array",
+            "items": {"type": "string"},
+            "description": "Observed facts to explain",
+        },
+        "max_hypotheses": {
+            "type": "integer",
+            "description": "Max hypotheses to generate (default: 5)",
+        },
+    },
+    "required": ["observations"],
+}
+
+EXPORT_GRAPH = {
+    "type": "object",
+    "properties": {
+        "format": {
+            "type": "string",
+            "enum": ["turtle", "ttl", "nt", "xml", "json-ld", "json", "csv"],
+            "description": "Export format (default: json-ld)",
+        },
+    },
+}
+
+GET_PROVENANCE = {
+    "type": "object",
+    "properties": {
+        "entity_id": {
+            "type": "string",
+            "description": "Entity or node ID to get provenance for",
+        },
+    },
+    "required": ["entity_id"],
+}
+
+GET_ANALYTICS = {
+    "type": "object",
+    "properties": {
+        "metrics": {
+            "type": "array",
+            "items": {
+                "type": "string",
+                "enum": ["pagerank", "betweenness", "communities", "degree", "all"],
+            },
+            "description": "Analytics to compute (default: ['all'])",
+        },
+        "top_n": {
+            "type": "integer",
+            "description": "Top N nodes to return per metric (default: 10)",
+        },
+    },
+}
+
+EMPTY = {"type": "object", "properties": {}}

mcp/server.py

@@ -0,0 +1,223 @@
+"""
+Semantica MCP Server — JSON-RPC 2.0 over stdio.
+
+Implements the Model Context Protocol so any MCP-compatible AI tool
+(Claude Code, Cursor, Windsurf, Cline, Continue, VS Code Copilot, etc.)
+can interact with the Semantica knowledge graph.
+
+Run:
+    python -m mcp                  # via __main__.py
+    python -m mcp.server           # direct
+"""
+
+from __future__ import annotations
+
+import json
+import logging
+import sys
+from typing import Any
+
+from mcp.resources import RESOURCE_DEFINITIONS, handle_resource_read
+from mcp.tools import TOOL_DEFINITIONS
+
+log = logging.getLogger("semantica.mcp.server")
+
+# ---------------------------------------------------------------------------
+# Helpers
+# ---------------------------------------------------------------------------
+
+def _ok(request_id: Any, result: Any) -> dict:
+    return {"jsonrpc": "2.0", "id": request_id, "result": result}
+
+
+def _err(request_id: Any, code: int, message: str, data: Any = None) -> dict:
+    error: dict = {"code": code, "message": message}
+    if data is not None:
+        error["data"] = data
+    return {"jsonrpc": "2.0", "id": request_id, "error": error}
+
+
+# JSON-RPC error codes
+_PARSE_ERROR = -32700
+_METHOD_NOT_FOUND = -32601
+_INVALID_PARAMS = -32602
+_INTERNAL_ERROR = -32603
+
+# ---------------------------------------------------------------------------
+# Tool dispatch index
+# ---------------------------------------------------------------------------
+
+_TOOL_INDEX: dict[str, dict] = {t["name"]: t for t in TOOL_DEFINITIONS}
+
+
+# ---------------------------------------------------------------------------
+# Request handlers
+# ---------------------------------------------------------------------------
+
+def _handle_initialize(req_id: Any, params: dict) -> dict:
+    return _ok(req_id, {
+        "protocolVersion": "2024-11-05",
+        "capabilities": {
+            "tools": {},
+            "resources": {},
+        },
+        "serverInfo": {
+            "name": "semantica-mcp",
+            "version": "0.4.0",
+        },
+    })
+
+
+def _handle_tools_list(req_id: Any, _params: dict) -> dict:
+    tools = [
+        {
+            "name": t["name"],
+            "description": t["description"],
+            "inputSchema": t["inputSchema"],
+        }
+        for t in TOOL_DEFINITIONS
+    ]
+    return _ok(req_id, {"tools": tools})
+
+
+def _handle_tools_call(req_id: Any, params: dict) -> dict:
+    name = params.get("name", "")
+    args = params.get("arguments", {}) or {}
+
+    tool = _TOOL_INDEX.get(name)
+    if tool is None:
+        return _err(req_id, _METHOD_NOT_FOUND, f"Unknown tool: {name}")
+
+    try:
+        result = tool["_handler"](args)
+    except Exception as exc:
+        log.exception("Tool %s raised an exception", name)
+        return _err(req_id, _INTERNAL_ERROR, str(exc))
+
+    # MCP spec: content must be a list of content items
+    return _ok(req_id, {
+        "content": [{"type": "text", "text": json.dumps(result, ensure_ascii=False)}],
+        "isError": "error" in result,
+    })
+
+
+def _handle_resources_list(req_id: Any, _params: dict) -> dict:
+    return _ok(req_id, {"resources": RESOURCE_DEFINITIONS})
+
+
+def _handle_resources_read(req_id: Any, params: dict) -> dict:
+    uri = params.get("uri", "").strip()
+    if not uri:
+        return _err(req_id, _INVALID_PARAMS, "uri is required")
+    resource = handle_resource_read(uri)
+    return _ok(req_id, {
+        "contents": [
+            {
+                "uri": resource["uri"],
+                "mimeType": resource.get("mimeType", "application/json"),
+                "text": resource.get("text", ""),
+            }
+        ]
+    })
+
+
+def _handle_ping(req_id: Any, _params: dict) -> dict:
+    return _ok(req_id, {})
+
+
+# ---------------------------------------------------------------------------
+# Dispatch table
+# ---------------------------------------------------------------------------
+
+_DISPATCH = {
+    "initialize": _handle_initialize,
+    "tools/list": _handle_tools_list,
+    "tools/call": _handle_tools_call,
+    "resources/list": _handle_resources_list,
+    "resources/read": _handle_resources_read,
+    "ping": _handle_ping,
+}
+
+
+# ---------------------------------------------------------------------------
+# Main server class
+# ---------------------------------------------------------------------------
+
+class SemanticaMCPServer:
+    """Semantica MCP server — reads JSON-RPC requests from stdin, writes to stdout."""
+
+    def __init__(self, *, debug: bool = False) -> None:
+        level = logging.DEBUG if debug else logging.WARNING
+        logging.basicConfig(stream=sys.stderr, level=level,
+                            format="%(name)s %(levelname)s %(message)s")
+
+    # ------------------------------------------------------------------
+    def dispatch(self, request: dict) -> dict | None:
+        """Process one JSON-RPC request and return a response dict (or None for notifications)."""
+        req_id = request.get("id")  # None for notifications
+        method = request.get("method", "")
+        params = request.get("params") or {}
+
+        handler = _DISPATCH.get(method)
+        if handler is None:
+            if req_id is None:
+                return None  # Notification — ignore unknown methods silently
+            return _err(req_id, _METHOD_NOT_FOUND, f"Method not found: {method}")
+
+        try:
+            return handler(req_id, params)
+        except Exception as exc:
+            log.exception("Unhandled error in method %s", method)
+            if req_id is None:
+                return None
+            return _err(req_id, _INTERNAL_ERROR, str(exc))
+
+    # ------------------------------------------------------------------
+    def run(self) -> None:
+        """Start the stdio event loop."""
+        log.info("Semantica MCP server starting (stdio)")
+        for raw_line in sys.stdin:
+            raw_line = raw_line.strip()
+            if not raw_line:
+                continue
+            try:
+                request = json.loads(raw_line)
+            except json.JSONDecodeError as exc:
+                response = _err(None, _PARSE_ERROR, f"Parse error: {exc}")
+                _write(response)
+                continue
+
+            if isinstance(request, list):
+                # Batch request
+                responses = []
+                for req in request:
+                    resp = self.dispatch(req)
+                    if resp is not None:
+                        responses.append(resp)
+                if responses:
+                    _write(responses)
+            else:
+                resp = self.dispatch(request)
+                if resp is not None:
+                    _write(resp)
+
+
+def _write(obj: Any) -> None:
+    sys.stdout.write(json.dumps(obj, ensure_ascii=False) + "\n")
+    sys.stdout.flush()
+
+
+# ---------------------------------------------------------------------------
+# Entry point
+# ---------------------------------------------------------------------------
+
+def main() -> None:
+    import argparse
+    parser = argparse.ArgumentParser(description="Semantica MCP Server")
+    parser.add_argument("--debug", action="store_true", help="Enable debug logging")
+    args = parser.parse_args()
+    SemanticaMCPServer(debug=args.debug).run()
+
+
+if __name__ == "__main__":
+    main()

mcp/session.py

@@ -0,0 +1,47 @@
+"""
+Shared graph session — lazy singleton across all tool handlers.
+
+The graph is initialised once on first access and shared for the
+lifetime of the MCP server process.  Set SEMANTICA_KG_PATH to
+automatically load a persisted graph on start.
+"""
+
+from __future__ import annotations
+
+import logging
+import os
+from typing import Any, Optional
+
+log = logging.getLogger("semantica.mcp.session")
+
+_graph: Optional[Any] = None
+
+
+def get_graph() -> Any:
+    """
+    Return the shared ContextGraph instance, creating it on first call.
+
+    The graph is created with advanced_analytics=True so all centrality,
+    community-detection, and embedding features are available.
+    """
+    global _graph
+    if _graph is None:
+        from semantica.context import ContextGraph
+
+        _graph = ContextGraph(advanced_analytics=True)
+
+        kg_path = os.environ.get("SEMANTICA_KG_PATH", "").strip()
+        if kg_path and os.path.exists(kg_path):
+            try:
+                _graph.load(kg_path)
+                log.info("Graph loaded from %s", kg_path)
+            except Exception as exc:
+                log.warning("Could not load graph from %s: %s", kg_path, exc)
+
+    return _graph
+
+
+def reset_graph() -> None:
+    """Reset the singleton (mainly useful in tests)."""
+    global _graph
+    _graph = None

mcp/tools/__init__.py

@@ -0,0 +1,22 @@
+"""
+MCP tool registry — imports all tool handlers and assembles TOOL_DEFINITIONS.
+
+Each module under mcp/tools/ registers its handlers here.
+"""
+
+from .decisions import DECISION_TOOLS
+from .export import EXPORT_TOOLS
+from .extraction import EXTRACTION_TOOLS
+from .graph import GRAPH_TOOLS
+from .reasoning import REASONING_TOOLS
+
+# Ordered list — exposed to the MCP client via tools/list
+TOOL_DEFINITIONS = (
+    EXTRACTION_TOOLS
+    + DECISION_TOOLS
+    + GRAPH_TOOLS
+    + REASONING_TOOLS
+    + EXPORT_TOOLS
+)
+
+__all__ = ["TOOL_DEFINITIONS"]

mcp/tools/decisions.py

@@ -0,0 +1,166 @@
+"""
+Decision intelligence tools — record, query, precedents, causal chain, impact.
+"""
+
+from __future__ import annotations
+
+import logging
+
+from mcp.schemas import (
+    ANALYZE_DECISION_IMPACT,
+    FIND_PRECEDENTS,
+    GET_CAUSAL_CHAIN,
+    QUERY_DECISIONS,
+    RECORD_DECISION,
+)
+from mcp.session import get_graph
+
+log = logging.getLogger("semantica.mcp.tools.decisions")
+
+
+def handle_record_decision(args: dict) -> dict:
+    """Record a decision with full context into the knowledge graph."""
+    required = ["category", "scenario", "reasoning", "outcome", "confidence"]
+    missing = [f for f in required if f not in args]
+    if missing:
+        return {"error": f"Missing required fields: {', '.join(missing)}"}
+    try:
+        graph = get_graph()
+        decision_id = graph.record_decision(
+            category=str(args["category"]),
+            scenario=str(args["scenario"]),
+            reasoning=str(args["reasoning"]),
+            outcome=str(args["outcome"]),
+            confidence=float(args["confidence"]),
+            entities=args.get("entities", []),
+            decision_maker=args.get("decision_maker", "mcp_client"),
+            valid_from=args.get("valid_from"),
+            valid_until=args.get("valid_until"),
+        )
+        return {
+            "decision_id": decision_id,
+            "status": "recorded",
+            "category": args["category"],
+            "outcome": args["outcome"],
+        }
+    except Exception as exc:
+        log.exception("record_decision failed")
+        return {"error": str(exc)}
+
+
+def handle_query_decisions(args: dict) -> dict:
+    """Query recorded decisions by natural language or structured filters."""
+    query = args.get("query", "").strip()
+    category = args.get("category", "").strip()
+    outcome_filter = args.get("outcome", "").strip()
+    limit = int(args.get("limit", 10))
+    try:
+        graph = get_graph()
+        if query:
+            results = graph.find_similar_decisions(query, max_results=limit)
+            decisions = results if isinstance(results, list) else list(results)
+        else:
+            nodes = graph.find_nodes(node_type="decision")
+            decisions = list(nodes)[:limit * 5]  # over-fetch for filtering
+            if category:
+                decisions = [d for d in decisions if d.get("category") == category]
+            if outcome_filter:
+                decisions = [d for d in decisions if d.get("outcome") == outcome_filter]
+            decisions = decisions[:limit]
+        return {"decisions": decisions, "count": len(decisions)}
+    except Exception as exc:
+        log.exception("query_decisions failed")
+        return {"error": str(exc), "decisions": []}
+
+
+def handle_find_precedents(args: dict) -> dict:
+    """Find past decisions similar to a given scenario using hybrid similarity search."""
+    scenario = args.get("scenario", "").strip()
+    if not scenario:
+        return {"error": "scenario is required", "precedents": []}
+    max_results = int(args.get("max_results", 5))
+    try:
+        graph = get_graph()
+        precedents = graph.find_similar_decisions(scenario, max_results=max_results)
+        results = precedents if isinstance(precedents, list) else list(precedents)
+        return {"precedents": results, "count": len(results)}
+    except Exception as exc:
+        log.exception("find_precedents failed")
+        return {"error": str(exc), "precedents": []}
+
+
+def handle_get_causal_chain(args: dict) -> dict:
+    """Trace the upstream or downstream causal chain from a decision."""
+    decision_id = args.get("decision_id", "").strip()
+    if not decision_id:
+        return {"error": "decision_id is required", "chain": []}
+    direction = args.get("direction", "downstream")
+    max_depth = int(args.get("max_depth", 5))
+    try:
+        graph = get_graph()
+        try:
+            from semantica.context.causal_analyzer import CausalChainAnalyzer
+            analyzer = CausalChainAnalyzer(graph_store=graph)
+            chain = analyzer.get_causal_chain(
+                decision_id, direction=direction, max_depth=max_depth
+            )
+        except (ImportError, AttributeError):
+            chain = graph.get_causal_chain(decision_id) if hasattr(graph, "get_causal_chain") else []
+        result = chain if isinstance(chain, list) else list(chain)
+        return {"chain": result, "count": len(result), "direction": direction}
+    except Exception as exc:
+        log.exception("get_causal_chain failed")
+        return {"error": str(exc), "chain": []}
+
+
+def handle_analyze_decision_impact(args: dict) -> dict:
+    """Analyse the downstream impact of a decision on the graph."""
+    decision_id = args.get("decision_id", "").strip()
+    if not decision_id:
+        return {"error": "decision_id is required"}
+    try:
+        graph = get_graph()
+        if hasattr(graph, "analyze_decision_impact"):
+            impact = graph.analyze_decision_impact(decision_id)
+        elif hasattr(graph, "analyze_decision_influence"):
+            impact = graph.analyze_decision_influence(decision_id)
+        else:
+            impact = {"message": "impact analysis not available on this graph instance"}
+        return {"decision_id": decision_id, "impact": impact}
+    except Exception as exc:
+        log.exception("analyze_decision_impact failed")
+        return {"error": str(exc)}
+
+
+DECISION_TOOLS = [
+    {
+        "name": "record_decision",
+        "description": "Record a decision with full context, causal links, and metadata into the Semantica knowledge graph.",
+        "inputSchema": RECORD_DECISION,
+        "_handler": handle_record_decision,
+    },
+    {
+        "name": "query_decisions",
+        "description": "Query recorded decisions by natural language, category, or outcome filter.",
+        "inputSchema": QUERY_DECISIONS,
+        "_handler": handle_query_decisions,
+    },
+    {
+        "name": "find_precedents",
+        "description": "Find past decisions similar to a given scenario using hybrid similarity search.",
+        "inputSchema": FIND_PRECEDENTS,
+        "_handler": handle_find_precedents,
+    },
+    {
+        "name": "get_causal_chain",
+        "description": "Trace the causal chain upstream or downstream from a recorded decision.",
+        "inputSchema": GET_CAUSAL_CHAIN,
+        "_handler": handle_get_causal_chain,
+    },
+    {
+        "name": "analyze_decision_impact",
+        "description": "Analyse the downstream impact and influence of a decision across the knowledge graph.",
+        "inputSchema": ANALYZE_DECISION_IMPACT,
+        "_handler": handle_analyze_decision_impact,
+    },
+]

mcp/tools/export.py

@@ -0,0 +1,150 @@
+"""
+Export tools — graph export (JSON/RDF/CSV/GraphML/Parquet) and provenance.
+"""
+
+from __future__ import annotations
+
+import logging
+
+from mcp.schemas import EXPORT_GRAPH, GET_PROVENANCE
+from mcp.session import get_graph
+
+log = logging.getLogger("semantica.mcp.tools.export")
+
+_FORMAT_ALIASES: dict[str, str] = {
+    "ttl": "turtle",
+    "turtle": "turtle",
+    "nt": "nt",
+    "xml": "xml",
+    "json-ld": "json-ld",
+    "jsonld": "json-ld",
+}
+
+
+def handle_export_graph(args: dict) -> dict:
+    """Export the knowledge graph to a structured format."""
+    fmt = str(args.get("format", "json")).lower().strip()
+    include_metadata = bool(args.get("include_metadata", True))
+    try:
+        graph = get_graph()
+
+        if fmt == "json":
+            nodes = list(graph.find_nodes())
+            edges: list = []
+            if hasattr(graph, "find_edges"):
+                try:
+                    edges = list(graph.find_edges())
+                except Exception as exc:
+                    log.debug("Failed to collect edges during JSON export; continuing with empty edges: %s", exc)
+            payload: dict = {"nodes": nodes, "edges": edges}
+            if include_metadata:
+                payload["meta"] = {
+                    "node_count": len(nodes),
+                    "edge_count": len(edges),
+                    "format": "json",
+                }
+            return {"format": "json", "data": payload}
+
+        if fmt in ("csv",):
+            nodes = list(graph.find_nodes())
+            rows = []
+            for n in nodes:
+                rows.append(",".join([
+                    str(n.get("id", "")),
+                    str(n.get("label", "")),
+                    str(n.get("type", "")),
+                ]))
+            header = "id,label,type"
+            return {"format": "csv", "data": header + "\n" + "\n".join(rows)}
+
+        if fmt in ("graphml",):
+            try:
+                from semantica.export import GraphMLExporter
+                exporter = GraphMLExporter()
+                data = exporter.export(graph)
+                return {"format": "graphml", "data": data}
+            except Exception as exc:
+                return {"error": f"GraphML export failed: {exc}"}
+
+        if fmt in ("parquet",):
+            try:
+                from semantica.export import ParquetExporter
+                exporter = ParquetExporter()
+                data = exporter.export(graph, include_metadata)
+                return {"format": "parquet", "data": str(data)}
+            except Exception as exc:
+                return {"error": f"Parquet export failed: {exc}"}
+
+        # RDF formats
+        rdf_fmt = _FORMAT_ALIASES.get(fmt)
+        if rdf_fmt:
+            try:
+                from semantica.export import RDFExporter
+                rdf_str = RDFExporter().export_to_rdf(graph, format=rdf_fmt)
+                return {"format": rdf_fmt, "data": rdf_str}
+            except Exception as exc:
+                return {"error": f"RDF export failed: {exc}"}
+
+        return {"error": f"Unsupported format '{fmt}'. Supported: json, csv, graphml, parquet, turtle, nt, xml, json-ld"}
+
+    except Exception as exc:
+        log.exception("export_graph failed")
+        return {"error": str(exc)}
+
+
+def handle_get_provenance(args: dict) -> dict:
+    """Retrieve the provenance / audit history for a node."""
+    node_id = args.get("node_id", "").strip()
+    if not node_id:
+        return {"error": "node_id is required", "provenance": []}
+    include_metadata = bool(args.get("include_metadata", True))
+    try:
+        graph = get_graph()
+
+        # Try ProvenanceTracker first
+        try:
+            from semantica.kg import ProvenanceTracker
+            tracker = ProvenanceTracker()
+            records = tracker.get_provenance(node_id)
+            result = records if isinstance(records, list) else list(records)
+        except (ImportError, AttributeError):
+            # Fallback: look for provenance on the node itself
+            nodes = list(graph.find_nodes())
+            matched = [n for n in nodes if n.get("id") == node_id]
+            if matched:
+                node = matched[0]
+                prov = node.get("provenance") or node.get("source") or node.get("metadata", {})
+                result = [prov] if prov else []
+            else:
+                result = []
+
+        payload: dict = {"node_id": node_id, "provenance": result, "count": len(result)}
+        if include_metadata and result:
+            payload["sources"] = list({
+                str(r.get("source", r.get("origin", "")))
+                for r in result
+                if isinstance(r, dict)
+            })
+        return payload
+    except Exception as exc:
+        log.exception("get_provenance failed")
+        return {"error": str(exc), "provenance": []}
+
+
+EXPORT_TOOLS = [
+    {
+        "name": "export_graph",
+        "description": (
+            "Export the Semantica knowledge graph to JSON, CSV, GraphML, Parquet, "
+            "Turtle (RDF), N-Triples, RDF/XML, or JSON-LD."
+        ),
+        "inputSchema": EXPORT_GRAPH,
+        "_handler": handle_export_graph,
+    },
+    {
+        "name": "get_provenance",
+        "description": "Retrieve the provenance and audit history for a specific node in the knowledge graph.",
+        "inputSchema": GET_PROVENANCE,
+        "_handler": handle_get_provenance,
+    },
+]

mcp/tools/extraction.py

@@ -0,0 +1,168 @@
+"""
+Extraction tools — NER, relation extraction, event detection, triplets.
+"""
+
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from mcp.schemas import EXTRACT_ALL, EXTRACT_ENTITIES, EXTRACT_RELATIONS
+
+log = logging.getLogger("semantica.mcp.tools.extraction")
+
+
+def _clear_cache() -> None:
+    try:
+        from semantica.semantic_extract.cache import _result_cache
+        _result_cache.clear()
+    except Exception:
+        log.debug("Could not clear semantic_extract cache; continuing", exc_info=True)
+
+
+def handle_extract_entities(args: dict) -> dict:
+    """Extract named entities from text using Semantica NER."""
+    text = args.get("text", "").strip()
+    if not text:
+        return {"error": "text is required", "entities": []}
+    _clear_cache()
+    try:
+        from semantica.semantic_extract import NamedEntityRecognizer
+        entities = NamedEntityRecognizer().extract(text) or []
+        return {
+            "entities": [
+                {
+                    "label": getattr(e, "label", str(e)),
+                    "type": getattr(e, "type", None),
+                    "start": getattr(e, "start", None),
+                    "end": getattr(e, "end", None),
+                    "confidence": getattr(e, "confidence", None),
+                }
+                for e in entities
+            ],
+            "count": len(entities),
+        }
+    except Exception as exc:
+        log.exception("extract_entities failed")
+        return {"error": str(exc), "entities": []}
+
+
+def handle_extract_relations(args: dict) -> dict:
+    """Extract relations and triplets from text."""
+    text = args.get("text", "").strip()
+    if not text:
+        return {"error": "text is required", "relations": [], "triplets": []}
+    _clear_cache()
+    try:
+        from semantica.semantic_extract import NamedEntityRecognizer, RelationExtractor, TripletExtractor
+        entities = NamedEntityRecognizer().extract(text) or []
+        relations = RelationExtractor().extract(text, entities) or []
+        triplets = TripletExtractor().extract(text) or []
+        return {
+            "relations": [
+                {
+                    "source": getattr(r, "source", None),
+                    "type": getattr(r, "type", None),
+                    "target": getattr(r, "target", None),
+                    "confidence": getattr(r, "confidence", None),
+                }
+                for r in relations
+            ],
+            "triplets": [
+                {
+                    "subject": getattr(t, "subject", None),
+                    "predicate": getattr(t, "predicate", None),
+                    "object": getattr(t, "object", None),
+                }
+                for t in triplets
+            ],
+            "relation_count": len(relations),
+            "triplet_count": len(triplets),
+        }
+    except Exception as exc:
+        log.exception("extract_relations failed")
+        return {"error": str(exc), "relations": [], "triplets": []}
+
+
+def handle_extract_all(args: dict) -> dict:
+    """Run the full extraction pipeline: NER + relations + events + triplets."""
+    text = args.get("text", "").strip()
+    if not text:
+        return {"error": "text is required"}
+    include_events = args.get("include_events", True)
+    include_triplets = args.get("include_triplets", True)
+    _clear_cache()
+    result: dict[str, Any] = {}
+    try:
+        from semantica.semantic_extract import (
+            CoreferenceResolver,
+            EventDetector,
+            NamedEntityRecognizer,
+            RelationExtractor,
+            TripletExtractor,
+        )
+
+        entities = NamedEntityRecognizer().extract(text) or []
+        result["entities"] = [
+            {"label": getattr(e, "label", str(e)), "type": getattr(e, "type", None)}
+            for e in entities
+        ]
+
+        resolved = CoreferenceResolver().resolve(text)
+        relations = RelationExtractor().extract(resolved, entities) or []
+        result["relations"] = [
+            {"source": getattr(r, "source", None),
+             "type": getattr(r, "type", None),
+             "target": getattr(r, "target", None)}
+            for r in relations
+        ]
+
+        if include_events:
+            events = EventDetector().extract(text) or []
+            result["events"] = [
+                {"type": getattr(ev, "type", None),
+                 "trigger": getattr(ev, "trigger", str(ev))}
+                for ev in events
+            ]
+
+        if include_triplets:
+            triplets = TripletExtractor().extract(resolved) or []
+            result["triplets"] = [
+                {"subject": getattr(t, "subject", None),
+                 "predicate": getattr(t, "predicate", None),
+                 "object": getattr(t, "object", None)}
+                for t in triplets
+            ]
+
+        result["summary"] = {
+            "entities": len(result.get("entities", [])),
+            "relations": len(result.get("relations", [])),
+            "events": len(result.get("events", [])),
+            "triplets": len(result.get("triplets", [])),
+        }
+        return result
+    except Exception as exc:
+        log.exception("extract_all failed")
+        return {"error": str(exc)}
+
+
+EXTRACTION_TOOLS = [
+    {
+        "name": "extract_entities",
+        "description": "Extract named entities (people, places, organisations, concepts) from text.",
+        "inputSchema": EXTRACT_ENTITIES,
+        "_handler": handle_extract_entities,
+    },
+    {
+        "name": "extract_relations",
+        "description": "Extract relations and (subject, predicate, object) triplets from text.",
+        "inputSchema": EXTRACT_RELATIONS,
+        "_handler": handle_extract_relations,
+    },
+    {
+        "name": "extract_all",
+        "description": "Run the full Semantica extraction pipeline: NER, coreference resolution, relation extraction, event detection, and triplet generation.",
+        "inputSchema": EXTRACT_ALL,
+        "_handler": handle_extract_all,
+    },
+]