From ad7d9266c1cfbf185d8cf0ccad482882fb99c776 Mon Sep 17 00:00:00 2001 From: KaifAhmad1 Date: Wed, 18 Feb 2026 00:23:41 +0530 Subject: [PATCH] Remove temporary PR description file --- PR_DESCRIPTION_context.md | 190 -------------------------------------- 1 file changed, 190 deletions(-) delete mode 100644 PR_DESCRIPTION_context.md diff --git a/PR_DESCRIPTION_context.md b/PR_DESCRIPTION_context.md deleted file mode 100644 index 14325040..00000000 --- a/PR_DESCRIPTION_context.md +++ /dev/null @@ -1,190 +0,0 @@ -# PR: Context Graph Decision Trace Hardening + Schema Compatibility - -## Summary -This PR upgrades Semantica's context decision stack from partially-wired trace capture to a true end-to-end decision trace workflow in existing modules, while keeping backward compatibility. - -It focuses on: -- Capturing decision traces with cross-system context, policy applications, exceptions, approvals, and precedents. -- Adding immutable-style hash-chained trace events (`DecisionTraceEvent`) for audit lineage. -- Hardening query/deserialization behavior across backend result shapes. -- Fixing schema/versioning mismatches and a few reliability bugs in context APIs. - -## Why This Change -The context module already had strong building blocks (decision recorder, policy engine, causal analysis, retriever), but one key entrypoint was still a placeholder and some schema/query edges were inconsistent for production context-graph usage. - -This PR closes those gaps so context graphs can be used as a decision system-of-record layer with better replayability and explainability. - -## Scope -Changed files: -- `semantica/context/decision_methods.py` -- `semantica/context/graph_schema.py` -- `semantica/context/decision_query.py` -- `semantica/context/causal_analyzer.py` -- `semantica/context/context_retriever.py` -- `semantica/context/agent_context.py` -- `tests/context/test_decision_methods_trace.py` - -No new modules were introduced. All changes are within existing context components. - -## Detailed Changes - -### 1. semantica/context/decision_methods.py ✨ Enhancement +217/-5 - -Implement end-to-end decision trace capture - -• Replaced placeholder `capture_decision_trace()` with full orchestration logic -• Added support for recording decisions, policies, exceptions, approvals, and precedents -• Implemented `_append_immutable_trace_events()` for hash-chained audit trail generation -• Made `graph_store` parameter optional for backward compatibility -• Added `immutable_audit_log` flag to control trace event creation -`semantica/context/decision_methods.py` - -### 1) End-to-end trace capture (replaced placeholder) -File: -- `semantica/context/decision_methods.py` - -Changes: -- Replaced placeholder `capture_decision_trace(...)` with actual orchestration: - - Records decision. - - Captures cross-system context. - - Applies policy links. - - Records exceptions. - - Records approval chains. - - Links precedents. -- Added optional immutable audit trail generation via hash-chained trace events. -- Added helper `_append_immutable_trace_events(...)`. - -New signature: -```python -capture_decision_trace( - decision, - cross_system_context, - graph_store=None, - entities=None, - source_documents=None, - policy_ids=None, - exceptions=None, - approvals=None, - precedents=None, - immutable_audit_log=True -) -``` - -Behavior: -- If `graph_store` is omitted, behavior remains backward compatible and returns `decision_id` without failing. -- If `graph_store` is provided, full trace persistence is executed. - -### 2) Immutable trace event schema + policy versioning compatibility -File: -- `semantica/context/graph_schema.py` - -Changes: -- Added `DecisionTraceEvent` support: - - Constraint: `decision_trace_id_unique` - - Indexes: `decision_trace_id_index`, `decision_trace_event_index`, `decision_trace_type_index`, `decision_trace_timestamp_index` - - Included in schema metadata and cleanup routines. -- Added relationship family metadata for: - - `HAS_TRACE_EVENT` - - `NEXT_TRACE_EVENT` -- Fixed policy schema mismatch: - - Introduced composite identity constraint for policies: - - `policy_identity_unique` on `(policy_id, version)` - - Added fallback to legacy `policy_id_unique` when composite constraints are not supported by backend. - -### 3) Decision query hardening for backend result shapes -File: -- `semantica/context/decision_query.py` - -Changes: -- Made result parsing robust when records are returned as: - - wrapped map (`{"d": {...}}`) or - - flat map (`{"decision_id": ...}`). -- Improved ID handling: - - accepts `decision_id` or `id`. - - raises clear `KeyError` when required IDs are missing. -- Removed invalid dataclass constructor arg (`auto_generate_id=False`) from `Decision` and `PolicyException` construction. - -### 4) Causal analyzer hardening for backend result shapes -File: -- `semantica/context/causal_analyzer.py` - -Changes: -- Same robust record parsing strategy as decision query for `end`/`root` records. -- Improved ID handling (`decision_id` or `id`). -- Removed invalid dataclass constructor arg (`auto_generate_id=False`) from `Decision` construction. - -### 5) Policy retrieval return-path fix -File: -- `semantica/context/context_retriever.py` - -Changes: -- `_find_relevant_policies(...)` now always returns a list (previous success path could fall through without return). - -### 6) AgentContext precedent conversion fix -File: -- `semantica/context/agent_context.py` - -Changes: -- Fixed conversion from ContextGraph precedent dict to `Decision` object: - - Removed unsupported `entities=` argument passed to `Decision`. - - Moved entities into `metadata["entities"]` to preserve data and compatibility. - -### 7) Added regression tests for trace capture -File: -- `tests/context/test_decision_methods_trace.py` - -Tests added: -- Backward compatibility when `graph_store` is not passed. -- End-to-end trace path execution with `graph_store` mock and immutable audit logging enabled. - -## Feature Alignment (Context Graph Requirements) -- ✅ Decision trace capture in execution path. -- ✅ Cross-system context persistence. -- ✅ Exception + approval + policy + precedent linkage in trace flow. -- ✅ Explainable lineage events with hash chaining. -- ✅ Temporal/event indexing for trace replay queries. -- ✅ Backward compatibility for existing convenience API usage. -- ⚠️ Storage-level tamper-proof guarantees are still backend-dependent (this PR adds app-level hash-chaining, not WORM storage). - -## Backward Compatibility -- Existing call style still works: - - `capture_decision_trace(decision, cross_system_context)` remains valid. -- No removed public APIs. -- Behavior is additive unless callers explicitly opt into richer trace fields. -- Policy constraint logic includes fallback for backends without composite-constraint support. - -## Validation Performed -Compilation: -- `python -m compileall semantica/context/decision_methods.py semantica/context/graph_schema.py semantica/context/context_retriever.py semantica/context/agent_context.py semantica/context/decision_query.py semantica/context/causal_analyzer.py` - -Targeted tests run and passed: -- `pytest -q tests/context/test_decision_methods_trace.py` -- `pytest -q tests/context/test_context_retriever_hybrid.py -k "find_relevant_policies"` -- `pytest -q tests/context/test_agent_context_decisions.py -k "find_precedents_success or record_decision_success"` -- `pytest -q tests/context/test_decision_query.py -k "find_precedents_hybrid_success"` -- `pytest -q tests/context/test_causal_analyzer.py -k "get_causal_chain_upstream_success"` - -Note: -- Full repository test suite was not run in this PR scope. - -## Risks and Mitigations -- Risk: Backend variations in Cypher support. - - Mitigation: policy constraint fallback and tolerant query parsing. -- Risk: Extra trace writes increase write volume. - - Mitigation: trace event creation is optional via `immutable_audit_log`. -- Risk: Existing consumers expecting entities directly on `Decision` constructor. - - Mitigation: entities preserved in metadata; no constructor change required. - -## Rollout Notes -- No migration is strictly required for existing users. -- To enable full trace recording, callers should pass `graph_store` to `capture_decision_trace(...)`. -- Existing deployments can adopt immutable tracing incrementally. - -## Checklist -- [x] Implemented end-to-end decision trace capture. -- [x] Added immutable hash-chained trace events. -- [x] Updated schema with trace labels/indexes/constraints. -- [x] Fixed policy versioning constraint compatibility. -- [x] Hardened query/parsing paths for heterogeneous backend results. -- [x] Preserved backward compatibility for existing convenience calls. -- [x] Added targeted regression tests.