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# Implementation Notes

**Session ID**: `phase16-session03-data-layer-demo-fixtures` **Started**: 2026-06-02 01:28 **Last Updated**: 2026-06-02 02:10

***

## Session Progress

| Metric              | Value   |
| ------------------- | ------- |
| Tasks Completed     | 21 / 21 |
| Estimated Remaining | 0 hours |
| Blockers            | 0       |

***

## Task Log

### 2026-06-02 - Session Start

**Environment verified**:

* [x] Prerequisites confirmed
* [x] Tools available
* [x] Directory structure ready

***

### Task T001 - Verify Session 02 endpoint prerequisites and payload contracts

**Started**: 2026-06-02 01:26 **Completed**: 2026-06-02 01:28 **Duration**: 2 minutes

**Notes**:

* Ran the spec analysis and prerequisite checks; current session resolved to `phase16-session03-data-layer-demo-fixtures`.
* Verified local Bun 1.3.14 and ripgrep availability.
* Reviewed `scripts/lib/hermes-dev-bridge.ts`, `scripts/lib/hermes-admin-bridge.ts`, and their focused tests to confirm the Session 02 read/write endpoint contracts.

**Files Changed**:

* `.spec_system/specs/phase16-session03-data-layer-demo-fixtures/implementation-notes.md` - Created implementation progress log.

**BQC Fixes**:

* N/A - verification-only task.

***

### Task T002 - Map v2.3 demo payload anchors to fixture needs

**Started**: 2026-06-02 01:28 **Completed**: 2026-06-02 01:29 **Duration**: 1 minute

**Notes**:

* Reviewed existing `src/lib/hermes-demo-data.ts` fixture exports and mapped the missing Phase 16 domains to the new read contracts.
* Identified fixture needs for connections, profiles, Pantheon templates, mission state, documents, document trash, and chat session detail.
* Confirmed demo data must remain bounded and use fixture-only labels without real local paths, secrets, prompts, transcripts, or credentials.

**Files Changed**:

* `.spec_system/specs/phase16-session03-data-layer-demo-fixtures/tasks.md` - Marked setup progress.
* `.spec_system/specs/phase16-session03-data-layer-demo-fixtures/implementation-notes.md` - Logged fixture mapping.

**BQC Fixes**:

* Trust boundary enforcement: fixture mapping explicitly excludes secret-like values, private paths, and raw prompt/transcript content.

***

### Task T003 - Define expanded read payload interfaces

**Started**: 2026-06-02 01:29 **Completed**: 2026-06-02 01:34 **Duration**: 5 minutes

**Notes**:

* Added typed read interfaces for connections, profiles, Pantheon templates, session detail, mission state, documents, and document trash.
* Kept shapes aligned with `scripts/lib/hermes-dev-bridge.ts` response bodies and existing `HermesQueryView` conventions.

**Files Changed**:

* `src/lib/hermes-types.ts` - Added expanded read payload interfaces and enum-like string union types.

**BQC Fixes**:

* Contract alignment: read payload interfaces mirror the bridge response contracts instead of introducing UI-only shapes.

***

### Task T004 - Implement expanded read response parsers

**Started**: 2026-06-02 01:34 **Completed**: 2026-06-02 01:35 **Duration**: 1 minute

**Notes**:

* Added runtime parsers for the new read endpoint payloads using the existing `readRecord`, `readArray`, `readString`, `readNumber`, and `readBoolean` helpers.
* Added explicit literal readers for session roles, connection kinds/statuses, mission actors/statuses, and document types.

**Files Changed**:

* `src/lib/hermes-types.ts` - Added expanded read parser helpers and exported parse functions.

**BQC Fixes**:

* Failure path completeness: malformed bridge payloads now throw `HermesParseError`, which the hook fetch layer maps to caller-visible endpoint errors.

***

### Task T005 - Define expanded admin write interfaces

**Started**: 2026-06-02 01:35 **Completed**: 2026-06-02 01:36 **Duration**: 1 minute

**Notes**:

* Added request and response interfaces for image upload, mission writes, Pantheon sync, document delete/restore/purge, and Obsidian bridge actions.
* Expanded the admin error-code union to include the new Session 02 bridge errors.

**Files Changed**:

* `src/lib/hermes-admin-types.ts` - Added expanded admin write request/response types.

**BQC Fixes**:

* Error information boundaries: client error-code typing now recognizes bridge-level denied/restricted cases without requiring raw internal errors.

***

### Task T006 - Implement expanded admin response parsers

**Started**: 2026-06-02 01:36 **Completed**: 2026-06-02 01:37 **Duration**: 1 minute

**Notes**:

* Added parser coverage for image upload, mission write/clear, Pantheon sync, document delete/restore/purge, and Obsidian response bodies.
* Kept bridge error parsing tolerant of unknown future codes while enumerating all current Session 02 codes.

**Files Changed**:

* `src/lib/hermes-admin-types.ts` - Added expanded admin parser helpers and exported parse functions.

**BQC Fixes**:

* Contract alignment: admin parser output now matches the bridge write response contracts used by future mutation wrappers.

***

### Task T007 - Prepare expanded demo fixture constants

**Started**: 2026-06-02 01:37 **Completed**: 2026-06-02 01:39 **Duration**: 2 minutes

**Notes**:

* Added bounded fixture data for connections, profiles, Pantheon templates, missions, documents, document trash, and session detail.
* Used fixture-only labels, `demo://` document roots, placeholder prompts, and short synthetic chat messages.

**Files Changed**:

* `src/lib/hermes-demo-data.ts` - Added expanded Hermes demo fixture constants and `HERMES_DEMO_DATA` fields.

**BQC Fixes**:

* Trust boundary enforcement: new fixtures avoid real local paths, tokens, raw transcripts, command output, or credential-like values.

***

### Task T008 - Extend Hermes query keys, options, and result fields

**Started**: 2026-06-02 01:40 **Completed**: 2026-06-02 01:45 **Duration**: 5 minutes

**Notes**:

* Added deterministic query keys for session detail, connections, profiles, Pantheon templates, missions, documents, and document trash.
* Added `sessionId` to hook options and exposed expanded read result fields from `UseHermesResult`.

**Files Changed**:

* `src/hooks/use-hermes.ts` - Extended query key and result contracts.

**BQC Fixes**:

* Contract alignment: result fields expose the typed parser outputs directly, preserving existing `HermesQueryView` semantics.

***

### Task T009 - Add non-sensitive expanded read queries

**Started**: 2026-06-02 01:45 **Completed**: 2026-06-02 01:46 **Duration**: 1 minute

**Notes**:

* Added public queries for connections, Pantheon templates, missions, documents, and document trash.
* Used existing `queryView` state mapping for loading, empty, error, and offline states.

**Files Changed**:

* `src/hooks/use-hermes.ts` - Added expanded public read queries.

**BQC Fixes**:

* Failure path completeness: parser and fetch failures flow into endpoint error views instead of silent empty data.

***

### Task T010 - Add token-gated profile and session-detail queries

**Started**: 2026-06-02 01:46 **Completed**: 2026-06-02 01:47 **Duration**: 1 minute

**Notes**:

* Added profile and session-detail queries that only run after the token handshake succeeds.
* Kept session detail idle when no session id is selected and surfaced token-failure state when a sensitive query is requested after token failure.

**Files Changed**:

* `src/hooks/use-hermes.ts` - Added token-gated profile and session-detail query state.

**BQC Fixes**:

* Trust boundary enforcement: sensitive reads require `sensitiveReadsEnabled` before bridge requests are issued.

***

### Task T011 - Add document file access helper

**Started**: 2026-06-02 01:47 **Completed**: 2026-06-02 01:48 **Duration**: 1 minute

**Notes**:

* Added `documentFile` helper with safe document-name validation, encoded file URLs, and explicit success/error result objects.
* Disabled file access in offline, demo, and setup-required states.

**Files Changed**:

* `src/hooks/use-hermes.ts` - Added document file URL and fetch helper.

**BQC Fixes**:

* Failure path completeness: file access returns structured errors for offline/setup/demo/invalid-name/fetch failures.
* Trust boundary enforcement: filenames are validated before URL construction and encoded before request.

***

### Task T012 - Add image and mission mutations

**Started**: 2026-06-02 01:48 **Completed**: 2026-06-02 01:56 **Duration**: 8 minutes

**Notes**:

* Added raw image upload support plus mission create, optimize, tick, and clear mutation wrappers.
* Added a scoped mutation runner so image and mission actions reject duplicate triggers while a same-domain write is in flight.

**Files Changed**:

* `src/hooks/use-hermes-admin.ts` - Added image and mission action groups.

**BQC Fixes**:

* Duplicate action prevention: same-domain image and mission writes return `null` while in flight.
* Trust boundary enforcement: all writes still require `canUseAdmin`, which depends on browser, online, admin-enabled, and token state.

***

### Task T013 - Add Pantheon sync and Obsidian bridge mutations

**Started**: 2026-06-02 01:56 **Completed**: 2026-06-02 01:57 **Duration**: 1 minute

**Notes**:

* Added Pantheon sync and Obsidian bridge action groups with required confirmation payloads.
* Expanded admin error-code typing and parsing to include forbidden and unsupported-media bridge responses.

**Files Changed**:

* `src/hooks/use-hermes-admin.ts` - Added Pantheon sync and Obsidian mutation groups.
* `src/lib/hermes-admin-types.ts` - Added related response parsers and error-code handling.

**BQC Fixes**:

* Duplicate action prevention: Pantheon sync and Obsidian writes use scoped in-flight guards.
* Error information boundaries: denied/restricted bridge errors surface as stable admin fetch errors.

***

### Task T014 - Add document write mutations

**Started**: 2026-06-02 01:57 **Completed**: 2026-06-02 01:58 **Duration**: 1 minute

**Notes**:

* Added document delete, restore, and purge mutation wrappers.
* Purge calls always send an explicit `purge` confirmation unless a caller provides another valid confirmation value.
* Deterministic ordering remains owned by the refreshed bridge read endpoints; the client invalidates read queries after successful writes.

**Files Changed**:

* `src/hooks/use-hermes-admin.ts` - Added document mutation group.

**BQC Fixes**:

* Duplicate action prevention: document writes share a scoped in-flight guard.
* Contract alignment: delete, restore, and purge wrappers target the Session 02 bridge routes and response parsers.

***

### Task T015 - Wire success-only query invalidation

**Started**: 2026-06-02 01:58 **Completed**: 2026-06-02 01:59 **Duration**: 1 minute

**Notes**:

* Added success-only invalidation for missions, documents/trash, Pantheon/templates, profiles, and Obsidian memory/profile reads.
* Did not add optimistic cache mutation; refreshed state comes from bridge reads after successful writes.

**Files Changed**:

* `src/hooks/use-hermes-admin.ts` - Added invalidation helpers and connected them to mutation `onSuccess` callbacks.

**BQC Fixes**:

* State freshness on re-entry: read caches are invalidated after successful writes so future UI sessions re-fetch bridge state.
* Contract alignment: no optimistic client shape is invented for persisted bridge data.

***

### Task T016 - Export expanded Hermes demo data

**Started**: 2026-06-02 01:59 **Completed**: 2026-06-02 02:00 **Duration**: 1 minute

**Notes**:

* Exported expanded demo data through `HERMES_DEMO_DATA` for new read domains and chat/session detail.
* Preserved existing demo keys for current Hermes UI compatibility.

**Files Changed**:

* `src/lib/hermes-demo-data.ts` - Exported expanded fixture fields through `HERMES_DEMO_DATA`.

**BQC Fixes**:

* Contract alignment: exported demo fields use the same typed payloads as live parser output.

***

### Task T017 - Write read parser and demo fixture tests

**Started**: 2026-06-02 02:00 **Completed**: 2026-06-02 02:03 **Duration**: 3 minutes

**Notes**:

* Added focused tests for valid, empty, malformed, and demo-fixture expanded read payloads.
* Verified the new read parser suite passes.

**Files Changed**:

* `src/lib/__tests__/hermes-types.test.ts` - Added expanded read parser and demo fixture tests.

**BQC Fixes**:

* Contract alignment: demo fixtures are parsed through the same runtime functions as live bridge responses.

***

### Task T018 - Extend admin parser tests

**Started**: 2026-06-02 02:03 **Completed**: 2026-06-02 02:04 **Duration**: 1 minute

**Notes**:

* Added tests for image, mission, Pantheon sync, document, and Obsidian response parsers.
* Added malformed payload assertions for the new admin parser paths.
* Verified the expanded admin parser suite passes.

**Files Changed**:

* `src/lib/__tests__/hermes-admin-types.test.ts` - Extended admin parser coverage.

**BQC Fixes**:

* Failure path completeness: malformed admin responses now have explicit parser rejection coverage.

***

### Task T019 - Extend read hook tests

**Started**: 2026-06-02 02:04 **Completed**: 2026-06-02 02:06 **Duration**: 2 minutes

**Notes**:

* Extended `useHermes` tests for expanded query gating, token failure, empty states, endpoint errors, and document file helper behavior.
* Verified the read hook suite passes with the admin hook suite.

**Files Changed**:

* `src/hooks/__tests__/use-hermes.test.tsx` - Added expanded read hook coverage.

**BQC Fixes**:

* Failure path completeness: hook tests now cover malformed expanded read payloads and invalid document filenames.

***

### Task T020 - Extend admin hook tests

**Started**: 2026-06-02 02:06 **Completed**: 2026-06-02 02:07 **Duration**: 1 minute

**Notes**:

* Extended admin hook tests for disabled, token-missing, offline states, duplicate mission writes, success-only invalidation, and required confirmation payloads.
* Updated the Hermes section test fixture to satisfy the expanded admin hook result contract.
* Verified the admin hook suite passes with the read hook suite.

**Files Changed**:

* `src/hooks/__tests__/use-hermes-admin.test.tsx` - Added expanded admin hook coverage.
* `src/components/hermes/__tests__/hermes-sections.test.tsx` - Added inert fixture action groups for the expanded admin result shape.

**BQC Fixes**:

* Duplicate action prevention: tests prove duplicate mission writes are rejected while in flight.
* State freshness on re-entry: tests verify mission cache invalidation only happens after mutation success.

***

### Task T021 - Run final verification

**Started**: 2026-06-02 02:07 **Completed**: 2026-06-02 02:10 **Duration**: 3 minutes

**Notes**:

* Ran focused Hermes parser, hook, and component tests: 5 files passed, 70 tests passed.
* Ran `bun run typecheck`: passed.
* Ran ASCII/LF validation for touched code and session files: passed.
* Ran `bun run lint`: failed on pre-existing Prettier issues outside this session's touched files.
* Ran targeted ESLint for touched files: passed.

**Files Changed**:

* `.spec_system/specs/phase16-session03-data-layer-demo-fixtures/tasks.md` - Marked verification and completion checklist complete.
* `.spec_system/specs/phase16-session03-data-layer-demo-fixtures/implementation-notes.md` - Logged verification outcome.

**BQC Fixes**:

* N/A - verification task.

**Verification Commands**:

* `bunx vitest run src/lib/__tests__/hermes-types.test.ts src/lib/__tests__/hermes-admin-types.test.ts src/hooks/__tests__/use-hermes.test.tsx src/hooks/__tests__/use-hermes-admin.test.tsx src/components/hermes/__tests__/hermes-sections.test.tsx`
* `bun run typecheck`
* `bun run lint`
* `bunx eslint src/lib/hermes-types.ts src/lib/hermes-admin-types.ts src/lib/hermes-demo-data.ts src/hooks/use-hermes.ts src/hooks/use-hermes-admin.ts src/lib/__tests__/hermes-types.test.ts src/lib/__tests__/hermes-admin-types.test.ts src/hooks/__tests__/use-hermes.test.tsx src/hooks/__tests__/use-hermes-admin.test.tsx src/components/hermes/__tests__/hermes-sections.test.tsx`
* ASCII/LF Perl validation over touched code and session files.

**Lint Caveat**:

* Full `bun run lint` failed on existing Prettier issues in `scripts/lib/hermes-admin-bridge.ts`, `scripts/lib/hermes-dev-bridge.ts`, `scripts/lib/__tests__/hermes-admin-bridge.test.ts`, and `src/lib/__tests__/home-transforms.test.ts`.
* Those files were outside this session's touched implementation scope; targeted lint for touched files passed.


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