> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md). # Implementation Notes **Session ID**: `phase26-session02-graph-read-bridge-registry-endpoints` **Started**: 2026-06-09 13:43 **Last Updated**: 2026-06-09 14:00 *** ## Session Progress | Metric | Value | | ------------------- | ------- | | Tasks Completed | 22 / 22 | | Estimated Remaining | 0 hours | | Blockers | 0 | *** ## Task Log ### 2026-06-09 - Session Start **Environment verified**: * [x] Prerequisites confirmed * [x] Tools available through Bun and local `node_modules/.bin` * [x] Directory structure ready **Notes**: * `check-prereqs.sh --json --env` passed. * `check-prereqs.sh --json --tools bun,tsc,vite,vitest` only checks global PATH and reported local package tools as missing. * Confirmed Bun 1.3.14 and local `node_modules/.bin/tsc`, `node_modules/.bin/vite`, and `node_modules/.bin/vitest` exist; verification will use package scripts. *** ### Task T001 - Verify Session 01 Graph Contracts And Seed Registry Prerequisites **Started**: 2026-06-09 13:42 **Completed**: 2026-06-09 13:43 **Duration**: 1 minute **Notes**: * Confirmed `KnowledgeGraphRegistryEntry`, parser validation, lowercase kebab-case ids, and workspace-relative `src/data/graphs/*.json` registry paths. * Confirmed checked-in `src/data/graphs/index.json` contains the `ai-os` entry and `src/data/graphs/ai-os.json` contains a bundled graph payload. **Files Changed**: * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T001 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged prerequisite verification. **BQC Fixes**: * N/A - verification-only task. *** ### Task T002 - Verify Hermes/OpenClaw Bridge Patterns **Started**: 2026-06-09 13:42 **Completed**: 2026-06-09 13:44 **Duration**: 2 minutes **Notes**: * Confirmed Hermes and OpenClaw dev bridges register endpoint-specific middleware through a container abstraction. * Confirmed request handling pattern: method gate, loopback gate, optional token gate for sensitive endpoints, bounded JSON errors, no-store response headers, and injected logger methods. * Confirmed stream handling precedent in `hermes-dev-bridge.ts` and `trend-finder-asset-bridge.ts`. **Files Changed**: * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T002 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged bridge pattern verification. **BQC Fixes**: * N/A - verification-only task. *** ### Task T003 - Create Bridge Test Fixture Scaffolding **Started**: 2026-06-09 13:44 **Completed**: 2026-06-09 13:47 **Duration**: 3 minutes **Notes**: * Added temp directory lifecycle helpers for isolated graph registry and artifact tests. * Added captured request and writable response doubles that can collect JSON bodies and streamed bytes. * Added JSON fixture helpers for registry rewrite assertions. **Files Changed**: * `scripts/lib/__tests__/knowledge-graph-dev-bridge.test.ts` - Added initial test fixture scaffolding. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T003 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged test scaffolding work. **BQC Fixes**: * Resource cleanup: Temp directories are removed after each test. *** ### Task T004 - Create Knowledge Graph Dev Bridge Module Shell **Started**: 2026-06-09 13:47 **Completed**: 2026-06-09 13:51 **Duration**: 4 minutes **Notes**: * Added endpoint constants for `/__graphify_list` and `/__graphify_graph`. * Added injected bridge options, middleware registration option shape, result union, logger forwarding helper, and bounded bridge error type. * Added placeholder endpoint readers so subsequent tasks can fill behavior behind a stable module boundary. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added initial bridge module shell. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T004 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged bridge shell work. **BQC Fixes**: * Error information boundaries: Error result type restricts browser-visible codes and messages to stable strings. *** ### Task T005 - Implement Confined Graph Path Helpers **Started**: 2026-06-09 13:51 **Completed**: 2026-06-09 13:54 **Duration**: 3 minutes **Notes**: * Added default workspace, graph directory, registry path, and seed graph path resolution. * Added graph artifact normalization that accepts absolute paths, workspace-relative `src/data/graphs/*.json` paths, and graph-directory-relative paths. * Added lexical confinement and realpath checks so existing symlinks cannot stream outside the graph directory. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added graph path resolution and confinement helpers. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T005 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged path helper work. **BQC Fixes**: * Trust boundary enforcement: Registry graph paths are normalized and confined before reads. * Error information boundaries: Path escape responses use bounded messages with no absolute path detail. *** ### Task T006 - Implement Strict Graph Id Extraction **Started**: 2026-06-09 13:54 **Completed**: 2026-06-09 13:56 **Duration**: 2 minutes **Notes**: * Added URL parsing and strict graph id extraction from the `id` query parameter. * Reused the registry-compatible lowercase kebab-case id shape and capped ids at 128 characters. * Missing ids and malformed URLs map to the same bounded `invalid_id` response. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added graph id extraction and validation. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T006 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged id validation work. **BQC Fixes**: * Trust boundary enforcement: Request ids are validated at the endpoint boundary before artifact lookup. *** ### Task T007 - Implement Raw Registry Compatibility Normalization **Started**: 2026-06-09 13:56 **Completed**: 2026-06-09 14:00 **Duration**: 4 minutes **Notes**: * Added raw registry record normalization before typed parser validation. * Preserved raw `path` and `sourcePath` values only as local pruning metadata. * Converted absolute, workspace-relative, and graph-directory-relative `graphPath` values to browser-safe `src/data/graphs/...` values before parsing/output. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added registry compatibility normalization. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T007 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged registry compatibility work. **BQC Fixes**: * Trust boundary enforcement: Raw registry values are schema parsed after compatibility normalization. * Error information boundaries: Returned entries omit local source paths and absolute graph paths. *** ### Task T008 - Implement Shared Response Helpers **Started**: 2026-06-09 13:56 **Completed**: 2026-06-09 13:57 **Duration**: 1 minute **Notes**: * Added shared JSON response helper with no-store and nosniff headers. * Added stream response helper with content type, content length, no-store headers, optional metadata headers, and stream error handling. * Added result sender that maps bounded bridge result codes to browser-safe JSON bodies. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added JSON and stream response helpers. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T008 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged response helper work. **BQC Fixes**: * Failure path completeness: Stream failures map to a visible `stream_failed` JSON error before bytes are sent. * Resource cleanup: Stream errors after bytes begin destroy the response instead of hanging. *** ### Task T009 - Implement Loopback-Only Request Dispatcher **Started**: 2026-06-09 13:57 **Completed**: 2026-06-09 13:57 **Duration**: <1 minute **Notes**: * Added dispatcher that rejects non-GET requests before endpoint readers run. * Added loopback enforcement without a token gate, matching this read-only session scope. * Mapped expected bridge request errors and unexpected failures to bounded JSON responses. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added Knowledge Graph bridge dispatcher. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T009 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged dispatcher work. **BQC Fixes**: * Trust boundary enforcement: Loopback authorization is enforced closest to the read endpoints. * Error information boundaries: Unexpected errors are logged server-side and exposed as `internal_error` only. *** ### Task T010 - Implement Graphify List Registry Read Path **Started**: 2026-06-09 13:57 **Completed**: 2026-06-09 13:58 **Duration**: 1 minute **Notes**: * Added fresh per-request reads from the graph registry file. * Added malformed JSON handling through a bounded `invalid_registry` response. * Returned parsed registry entries sorted by id for deterministic list output. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added registry read and list response path. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T010 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged list endpoint work. **BQC Fixes**: * State freshness on re-entry: Registry data is read from disk for each request. * Failure path completeness: Missing registry degrades to an empty list, malformed registry fails visibly. *** ### Task T011 - Implement Stale Graph Artifact Pruning **Started**: 2026-06-09 13:58 **Completed**: 2026-06-09 13:58 **Duration**: <1 minute **Notes**: * Added artifact existence checks that require a real confined file before a registry entry is retained in list output. * Added idempotent registry rewrite only when stale artifact entries are removed. * No graph files are deleted; pruning only updates the registry array. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added stale graph artifact pruning and registry rewrite helper. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T011 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged artifact pruning work. **BQC Fixes**: * Failure path completeness: Stale registry entries are removed from list output instead of causing broken browser reads. * Trust boundary enforcement: Existing artifact paths are realpath-confined before being retained. *** ### Task T012 - Implement Stale Local Source Path Pruning **Started**: 2026-06-09 13:58 **Completed**: 2026-06-09 13:58 **Duration**: <1 minute **Notes**: * Added pruning for missing local source paths stored in raw `sourcePath` or `path` metadata. * Retained entries with empty source metadata and durable `git:` sources. * Kept source paths out of the browser-facing registry response. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added local source pruning. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T012 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged source pruning work. **BQC Fixes**: * State freshness on re-entry: Local source existence is rechecked on each list request. * Error information boundaries: Source path metadata is never included in response payloads. *** ### Task T013 - Implement Graph File Lookup **Started**: 2026-06-09 13:58 **Completed**: 2026-06-09 13:59 **Duration**: 1 minute **Notes**: * Added graph endpoint lookup by validated `id`. * Registry-mapped artifacts are preferred when present. * Unknown but syntactically safe ids resolve to a confined `.json` artifact under the graph directory. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added graph id artifact lookup. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T013 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged graph lookup work. **BQC Fixes**: * Trust boundary enforcement: Loopback and id validation run before graph artifact lookup. * Contract alignment: Registry ids and direct artifact ids use the same lowercase kebab-case shape. *** ### Task T014 - Implement Confined Graph JSON Streaming **Started**: 2026-06-09 13:59 **Completed**: 2026-06-09 13:59 **Duration**: <1 minute **Notes**: * Added stream result creation for existing confined graph files. * Set JSON content type, content length, no-store, and nosniff headers. * Reused the shared stream error handler for pre-byte JSON failures and post-byte response cleanup. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added confined graph stream result creation. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T014 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged graph streaming work. **BQC Fixes**: * Resource cleanup: Stream errors after headers/body begin destroy the response instead of hanging. * Failure path completeness: Stream setup verifies a confined existing file before creating a read stream. *** ### Task T015 - Implement Bundled Seed Fallback **Started**: 2026-06-09 13:59 **Completed**: 2026-06-09 13:59 **Duration**: <1 minute **Notes**: * Added fallback streaming from the bundled `ai-os` graph when a safe requested artifact is unavailable. * Added explicit fallback response headers for the fallback graph id and requested id. * Invalid ids and path escapes still fail explicitly and do not fall back. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added bundled seed fallback stream path. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T015 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged fallback behavior. **BQC Fixes**: * Failure path completeness: Safe missing graph artifacts degrade to a usable bundled graph. * Contract alignment: Fallback metadata is exposed via stable response headers. *** ### Task T016 - Export Knowledge Graph Bridge Registration **Started**: 2026-06-09 13:59 **Completed**: 2026-06-09 13:59 **Duration**: <1 minute **Notes**: * Added `registerKnowledgeGraphDevBridge`. * Registered both graph endpoints through the shared middleware container abstraction. * Routed async handler failures through Vite middleware `next`. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Added bridge registration export. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T016 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged registration export work. **BQC Fixes**: * Failure path completeness: Async registration handlers catch and forward unexpected promise rejections. *** ### Task T017 - Wire Knowledge Graph Bridge Into Vite **Started**: 2026-06-09 13:59 **Completed**: 2026-06-09 13:59 **Duration**: <1 minute **Notes**: * Imported `registerKnowledgeGraphDevBridge` into `vite.config.ts`. * Registered the bridge in the existing `claude-os-live-data` dev middleware plugin. * Passed explicit workspace, graph directory, registry, seed graph, loopback, and logger options. **Files Changed**: * `vite.config.ts` - Registered Knowledge Graph dev bridge. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T017 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged Vite bridge wiring. **BQC Fixes**: * Contract alignment: Vite configuration now registers the same two endpoint constants exported by the bridge module. *** ### Task T018 - Write Registration And Rejection Tests **Started**: 2026-06-09 13:59 **Completed**: 2026-06-09 13:59 **Duration**: <1 minute **Notes**: * Added tests for endpoint registration and list response headers. * Added tests for method rejection, non-loopback rejection, invalid graph ids, and graph path confinement failures. * Confirmed path confinement errors do not expose private filesystem paths in response bodies. **Files Changed**: * `scripts/lib/__tests__/knowledge-graph-dev-bridge.test.ts` - Added registration, header, and rejection tests. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T018 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged rejection test coverage. **BQC Fixes**: * Trust boundary enforcement: Tests cover loopback, id validation, and path confinement. * Error information boundaries: Tests assert private paths are not exposed. *** ### Task T019 - Write Registry Listing And Pruning Tests **Started**: 2026-06-09 13:59 **Completed**: 2026-06-09 13:59 **Duration**: <1 minute **Notes**: * Added registry list test with valid, stale-artifact, stale-source, `git:`, and empty-source entries. * Asserted returned graph paths are browser-safe and do not include private graph directory paths. * Asserted stale entries are removed from the rewritten registry while retained entries remain stable across a second read. **Files Changed**: * `scripts/lib/__tests__/knowledge-graph-dev-bridge.test.ts` - Added registry listing and pruning tests. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T019 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged pruning test coverage. **BQC Fixes**: * State freshness on re-entry: Tests confirm repeated reads after pruning remain stable. * Contract alignment: Tests confirm returned registry graph paths match typed browser contract. *** ### Task T020 - Write Graph Streaming, Fallback, And Malformed Registry Tests **Started**: 2026-06-09 13:59 **Completed**: 2026-06-09 13:59 **Duration**: <1 minute **Notes**: * Added graph streaming test for a registry-mapped graph artifact. * Added seed fallback test for a safe missing graph id with fallback headers. * Added stream failure and malformed registry tests with bounded error assertions. **Files Changed**: * `scripts/lib/__tests__/knowledge-graph-dev-bridge.test.ts` - Added streaming, fallback, stream failure, and malformed registry tests. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T020 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged streaming test coverage. **BQC Fixes**: * Failure path completeness: Tests cover stream failure and malformed registry behavior. * Contract alignment: Tests cover fallback metadata headers and streamed JSON content. *** ### Task T021 - Run Focused Vitest And Script Typecheck **Started**: 2026-06-09 13:58 **Completed**: 2026-06-09 14:00 **Duration**: 2 minutes **Notes**: * Ran focused bridge tests successfully. * Initial script typecheck exposed path-helper option typing and one intentional test cast issue. * Narrowed exported helper defaults to path-only options and cast the parsed array through `unknown`. * Re-ran focused bridge tests and script typecheck successfully. **Verification**: * `bun run test -- scripts/lib/__tests__/knowledge-graph-dev-bridge.test.ts` - Passed, 1 file, 5 tests. * `bun run typecheck:scripts` - Passed. **Files Changed**: * `scripts/lib/knowledge-graph-dev-bridge.ts` - Narrowed path helper option types. * `scripts/lib/__tests__/knowledge-graph-dev-bridge.test.ts` - Fixed intentional JSON array cast. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T021 complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged verification. **BQC Fixes**: * Contract alignment: Script typecheck confirmed bridge/test TypeScript contracts. *** ### Task T022 - Validate ASCII Encoding And Unix LF Endings **Started**: 2026-06-09 14:00 **Completed**: 2026-06-09 14:00 **Duration**: <1 minute **Notes**: * Validated ASCII-only content and absence of CRLF line endings across the touched bridge, test, Vite config, and active session files. * Marked the completion checklist ready for the validate workflow step. **Verification**: * ASCII and CRLF shell check - Passed. **Files Changed**: * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/tasks.md` - Marked T022 and completion checklist complete. * `.spec_system/specs/phase26-session02-graph-read-bridge-registry-endpoints/implementation-notes.md` - Logged final validation. **BQC Fixes**: * N/A - encoding and line-ending validation task. *** --- # Agent Instructions This documentation is published with GitBook. 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