The persistence seam is now create/open/stat/list returning per-session
SessionHandles (read/append/flush/close); every log read and write flows
through the owning handle. The seam package exports only the service and
handle contracts, consumer-visible errors, and pure durable-data
validation helpers; each backend owns its complete storage runtime, and
the shared contract suites pin equivalent observable behavior. The
backend routes published sessions' live events by id into the active
write handle; agent-loop only acquires, seeds, and closes the handle.
Resume appends interruptedTurnClosers through its write handle;
session-query owns the revision-keyed cold cache. Legacy-only surfaces
are removed in the same swap: locate/readRaw/supportsRawArtifacts, the
legacy event-shape read migration, zstd torn-frame salvage,
DSH_SESSION_JSONL, and hook transcript_path population; a torn final
zstd frame is discarded whole; the session-list cold blank probe returns
on stat metadata (eventCount derived from the last physical row,
sizeBytes). The WebUI ZIP export serializes the logical log from a read
handle, so both backends export identically.
Refs #3245
New turnOutline projection unit serving every started turn's number,
turn/start seq, and bounded first-prompt preview through the
session-projection seam, mounted in the web-app bundle for the chat
turn rail. Entries stay strictly increasing; previews mirror the rail's
loaded-turn preview budget.
render() loaded the workspace manifests once per external dependency
name through workspaceLinkedManifest, an O(names x manifests) file
read on the cold path; on the loaded self-hosted Windows host with
coverage instrumentation the freshness spec crossed Vitest's default
5000ms budget and failed the serial-windows standby gate four times in
a week. Load the manifests once in render() and thread the map through
the collectors instead.
The serial-windows lane also ran the coverage inventory at the strictest
budget of any lane: add DSH_COVERAGE_TEST_TIMEOUT_MS=90000 to match the
pull-request windows-coverage lane, pinned by ci-workflow.spec.ts.
The capability-seams graph derives its implementation lists from
SERVICE_ROLES in scripts/gen-doc-graphs.ts, which still listed only the
worker-thread backend. Add experimental-code-runtime-python so the
generated graph and table match the registered ctx.codeRuntime
implementations; regenerate docs/capability-seams.md, sync the zh pair,
and re-record the i18n pairing.
The CPython code runtime's complete public contract is experimental, so it
moves to packages/experimental per the experimental-packages rules: npm name
@deepseek-ai/dsh-experimental-code-runtime-python, private: true, no
publishConfig. All references updated (code-runtime READMEs, config-catalog
and module-graph regenerated with zh alignment, tsconfig paths, doc-standard
and workspace-constraints scripts, the fd-3 and settlement Agent Notes, and
the package README links); md-links and translation pairing pass, and the
suite still runs green.
The audited library registry still listed dsh-code-runtime-python as a plain
protocol library, but the shipped package's src/index.ts has a plugin default
export; the entry is removed from PACKAGE_LIBRARIES and both READMEs declare
kind: package-reference. The zh README heading is 概述 per the standard.
Land the PythonCodeRuntime implementation on top of the fd-3 protocol
seam: python3 -I per run, binding namespace over fd 3, RLIMIT_CPU/AS,
wall-clock timer, and SIGTERM->grace->SIGKILL process-group teardown,
with the real-subprocess integration suite.
Fixes three defects surfaced on the source PR's review before they ship:
- boot-write failure resolved a worker-exit through finish()/settle()
that read wallTimer/onAbort/live in their TDZ, rejecting run() instead;
the boot write now runs after those bindings and the v8-ignore that hid
the branch is removed.
- log capture serialized against settlement with no lock while model
daemon threads keep writing; LogBuffer now owns one shared re-entrant
lock taken by write/flush_line/push.
- the fd-3 line residual was a subarray view pinning the whole joined
frame; it is copied into a right-sized Buffer via detachResidual so
pendingBytes measures what is retained.
Resolve the 08-08 note conflict (keep the zero-build rewrite, drop the
SQLite busy-journal sentence removed with the SQLite backend) and drop the
now-removed session-persistence-sqlite built-package suite from the
lib-consuming self-skip inventory in the ci.yml comment, the
ci-workflow.spec.ts comment, and the partitioned-coverage note; the
inventory is now image-loadable, transform-corpus, and client-bundle.
client-bundle.client.spec.ts reads packages/client/ui-trajectory/lib/client.js
and skips all three cases when the bundle is absent, so it is a fourth
lib-consuming suite in the instrumented corpus. List it beside built-package
in the ci.yml comment, the ci-workflow.spec.ts comment, and the
partitioned-coverage note (both languages).
Strengthen the ci-workflow.spec.ts guard to match any 'pnpm run build'
spelling (corepack prefix, multi-line run blocks) instead of one exact
string, and complete the lib-consuming self-skip inventory with the
webworker-runtime transform-corpus import sweep alongside the packer
image assertions and the built-package check. Update the ci.yml comment
and the partitioned-coverage note (both languages) to match, and drop the
stale 'post-build' phase wording and the native-Windows build-wait
rationale from the coverage-exempt comment.
The windows-coverage job built the workspace before running the same
ci-coverage gates as Linux, but the instrumented corpus resolves
workspace imports to src through the tsconfig paths map and never
consumes lib/; the two lib-consuming suites (webworker-packer
image-loadable, session-persistence-sqlite built-package) self-skip on
unbuilt checkouts, exactly how the Linux lane already runs them. Remove
the build step so both lanes behave identically, and pin the zero-build
invariant in ci-workflow.spec.ts (red before this change, green after).
Agent Notes updated in place: corrected the build-wait rationale and the
wrong attribution of the packer assertions to the instrumented suite.
pnpm hardlinks node_modules files to the store on the same volume, and
TypeScript's native realpath resolves those links back to store paths
(F:/.pnpm-store/v11/files/...), producing TS6231 during tsc -b and vite
resolution. ReFS block cloning (package-import-method=clone) gives each
file an independent path while sharing physical blocks, avoiding the
leak without the copy cost. Clone mode needs the @reflink/reflink native
module, which the system corepack pnpm carries but pnpm/action-setup's
dest build omits, so installs run through corepack pnpm.
The install steps branch on the workspace filesystem: clone only on
ReFS, plain install on hosted NTFS (which rejects copy-on-write). The
serial-windows store points at F:\.pnpm-store to share the ReFS volume.
Agent Note 2026-08-30-windows-refs-store-block-clone-install records the
rationale; ci-workflow.spec asserts the branch.
Tianyi Cui