> 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/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md).

# Implementation Notes

**Session ID**: `phase24-session08-cross-surface-documentation-reference-mode` **Started**: 2026-06-08 05:53 **Last Updated**: 2026-06-08 06:43

***

## Session Progress

| Metric              | Value     |
| ------------------- | --------- |
| Tasks Completed     | 20 / 20   |
| Estimated Remaining | 0 minutes |
| Blockers            | 0         |

***

## Task Log

### 2026-06-08 - Session Start

**Environment verified**:

* [x] Prerequisites confirmed with `.spec_system/scripts/check-prereqs.sh --json --env`
* [x] Bun available as 1.3.14
* [x] Vitest available through the local Bun toolchain (`bun --bun vitest --version`)
* [x] Directory structure ready

***

### Task T001 - Verify prior Phase 24 validation status

**Started**: 2026-06-08 05:53 **Completed**: 2026-06-08 05:53 **Duration**: 1 minute

**Notes**:

* Verified validation reports for Phase 24 sessions 01 through 07.
* Sessions 01 through 05 and 07 reported `PASS` validation with tasks complete, ASCII/LF checks passing, and no DB-layer work.
* Session 06 reported `PASS`; its validation notes document a full-repository test timeout as an unrelated, pre-existing blocker accepted for that closeout.
* No deferred product behavior from sessions 01 through 07 should be documented as shipped in this session; public hosting and unreviewed source expansion remain optional or deferred.

**Files Changed**:

* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded prior validation status and session start context.

**BQC Fixes**:

* None; documentation/setup task only.

***

### Task T002 - Audit Reference mode registry and baseline tests

**Started**: 2026-06-08 05:53 **Completed**: 2026-06-08 05:54 **Duration**: 1 minute

**Notes**:

* Audited `src/extensions/trend-finder/reference-docs.ts`; it imports eight committed Markdown manuals through Vite raw imports and resolves local Trend Finder Markdown links by filename.
* Audited `src/extensions/trend-finder/__tests__/reference-docs.test.ts`; current coverage verifies stable order, non-empty Markdown, source path shape, title headings, link resolution, and lookup by ID.
* Audited `src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx`; current coverage verifies heading extraction, GFM rendering, registered tab links, local non-reference fallback, and external links.
* Baseline focused test command passed: `bun run test -- src/extensions/trend-finder/__tests__/reference-docs.test.ts src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx` (2 files, 7 tests).

**Files Changed**:

* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded registry/test audit and baseline test result.

**BQC Fixes**:

* None; audit task only.

***

### Task T003 - Build Phase 24 documentation update checklist

**Started**: 2026-06-08 05:54 **Completed**: 2026-06-08 05:55 **Duration**: 1 minute

**Notes**:

* Built the documentation update checklist from `PRD_phase_24.md`, the Session 08 stub, current manual headings, and sessions 01 through 07 deliverables.
* `docs/extensions/README_docs-extensions.md`: align Reference mode, local-only extension boundaries, and optional static Brief export.
* `docs/extensions/trend-finder-scoring.md`: verify source-local baselines, placement exclusions, bounded lift, actionability bands, and no raw popularity overclaim.
* `docs/extensions/trend-finder-pipeline.md`: verify scheduler status, first-run/run control, live progress, enrichment cache retention/pruning, spend summaries, media asset bridge, and optional static export.
* `docs/extensions/trend-finder-sources.md`: verify reviewed source setup, target fields, reviewed-source validation, source spend/cache state, and promoted/pinned placement handling.
* `docs/extensions/trend-finder-ui-surfaces.md`: verify Source Setup, Signal Workbench triage, media asset states, scheduler first-run, live progress, Brief, static export, and Reference mode.
* `docs/extensions/trend-finder-runtime-and-provenance.md`: verify Engine Replay labels for source-local counters, enrichment skips, spend, scheduler status, live progress, asset failures/pruning, dropped placement rows, static export, and Reference mode.
* All manuals must keep optional hosting, new source adapters, raw transcripts, raw source payloads, raw logs, billing payloads, credentials, local triage notes, private caches, and local paths out of browser-visible current-behavior claims.

**Files Changed**:

* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded the manual update checklist.

**BQC Fixes**:

* None; documentation planning task only.

***

### Task T004 - Update extension docs index

**Started**: 2026-06-08 05:56 **Completed**: 2026-06-08 05:58 **Duration**: 2 minutes

**Notes**:

* Expanded the Trend Finder related-doc descriptions to include scheduler state, enrichment/spend, source setup, source-local scoring, live progress, assets, static export, and Reference mode.
* Added top-level current-behavior bullets for local Source Setup, source-local placement exclusions, Signal Workbench triage, scheduler first-run/live progress, recurring spend, and protected asset previews.
* Clarified that Reference mode switches registered Trend Finder docs as tabs and is not a dynamic docs loader or private-cache inspection path.

**Files Changed**:

* `docs/extensions/README_docs-extensions.md` - aligned overview, static export, Reference mode, and local-only boundaries.

**BQC Fixes**:

* None; documentation-only task.

***

### Task T005 - Align scoring manual

**Started**: 2026-06-08 05:58 **Completed**: 2026-06-08 06:01 **Duration**: 3 minutes

**Notes**:

* Added the explicit source-local peer-baseline requirement: at least three peer baseline values after excluding the current row.
* Expanded the actionability band table to include the exact actionability levels (`low-signal`, `watch`, `repeatable`, `verify-first`, and `unavailable`).
* Clarified that actionability is inspection guidance, not a ranking override or replication guarantee.

**Files Changed**:

* `docs/extensions/trend-finder-scoring.md` - aligned source-local baseline, placement exclusion, bounded lift, and actionability guidance.

**BQC Fixes**:

* None; documentation-only task.

***

### Task T006 - Align pipeline manual

**Started**: 2026-06-08 06:01 **Completed**: 2026-06-08 06:03 **Duration**: 2 minutes

**Notes**:

* Clarified scheduler first-run as an operator setup state rather than a generated-data error.
* Documented explicit overlap handling for duplicate local run attempts.
* Clarified enrichment cache retention as active keep-set pruning, not a durable archive or Reference mode input.

**Files Changed**:

* `docs/extensions/trend-finder-pipeline.md` - aligned scheduler status, live progress, cache retention/pruning, spend/export boundaries, and static export wording.

**BQC Fixes**:

* None; documentation-only task.

***

### Task T007 - Align sources manual

**Started**: 2026-06-08 06:03 **Completed**: 2026-06-08 06:05 **Duration**: 2 minutes

**Notes**:

* Clarified that Source Setup writes are additive, reviewed-source scoped, and limited to allowlisted target fields.
* Documented that unknown sources, malformed targets, new adapters, new media fields, and new historical windows still require source compliance review.
* Clarified that spend/cache labels are generated safe summaries and not live billing dashboards.

**Files Changed**:

* `docs/extensions/trend-finder-sources.md` - aligned reviewed source setup, target fields, spend/cache state, and promoted/pinned handling boundaries.

**BQC Fixes**:

* None; documentation-only task.

***

### Task T008 - Align runtime/provenance manual

**Started**: 2026-06-08 06:05 **Completed**: 2026-06-08 06:07 **Duration**: 2 minutes

**Notes**:

* Clarified that Engine Replay placement proof is aggregate excluded/down-weighted counts only, not raw promoted/pinned source rows.
* Documented Reference mode link handling for registered Trend Finder docs, non-registered local docs, and external links.
* Reinforced that Reference mode is static committed Markdown and does not read private caches, reports, raw traces, scheduler state, or source setup state.

**Files Changed**:

* `docs/extensions/trend-finder-runtime-and-provenance.md` - aligned Engine Replay labels, live progress/spend/assets, and Reference mode boundaries.

**BQC Fixes**:

* None; documentation-only task.

***

### Task T009 - Update UI surfaces manual

**Started**: 2026-06-08 06:07 **Completed**: 2026-06-08 06:10 **Duration**: 3 minutes

**Notes**:

* Added an explicit Source Setup section to the UI manual.
* Documented local-only Source Setup behavior, reviewed source IDs, allowlisted target fields, safe labels, blocked target/source cases, and the fact that saving setup does not run collection by itself.
* Confirmed existing UI manual coverage for Signal Workbench triage, media assets, first-run controls, live progress, Brief, static export, and Reference mode.

**Files Changed**:

* `docs/extensions/trend-finder-ui-surfaces.md` - aligned Source Setup and related UI surface boundaries.

**BQC Fixes**:

* None; documentation-only task.

***

### Task T010 - Cross-check implemented vs deferred labels

**Started**: 2026-06-08 06:10 **Completed**: 2026-06-08 06:12 **Duration**: 2 minutes

**Notes**:

* Scanned the updated manuals for `Instagram`, `Reels`, planned/future language, hosted/deployment defaults, and other implemented-vs-deferred drift terms.
* No example-specific Instagram/Reels product language was present in the user-facing manuals.
* Optional public hosting, hosted observability, generated report commits, and historical run selection remain labeled as optional/deferred rather than current default behavior.
* Tightened one spend sentence to avoid implying the latest generated spend summary predicts the next run exactly.

**Files Changed**:

* `docs/extensions/trend-finder-sources.md` - clarified recurring spend estimate wording.
* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded scan result.

**BQC Fixes**:

* None; documentation-only task.

***

### Task T011 - Cross-check browser-safe boundaries

**Started**: 2026-06-08 06:12 **Completed**: 2026-06-08 06:15 **Duration**: 3 minutes

**Notes**:

* Scanned manuals for raw transcript, raw source payload, raw log, billing payload, account auth, credential, token, private cache, private path, prompt, provider response, Actor, and Dataset boundary terms.
* Runtime, pipeline, and sources manuals already frame sensitive data as excluded, summarized, or browser-safe.
* Added raw billing payload exclusions to the top-level extension overview and UI static export section for cross-manual consistency.

**Files Changed**:

* `docs/extensions/README_docs-extensions.md` - added raw billing payload exclusions to static export and Engine Replay overview wording.
* `docs/extensions/trend-finder-ui-surfaces.md` - added raw billing payload exclusion to static export UI wording.
* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded boundary scan result.

**BQC Fixes**:

* None; documentation-only task.

***

### Task T012 - Update Reference mode registry metadata

**Started**: 2026-06-08 06:15 **Completed**: 2026-06-08 06:17 **Duration**: 2 minutes

**Notes**:

* Updated Reference mode descriptions for Pipeline, Sources, Runtime, Scoring, and UI Surfaces to match the Phase 24 manual scope.
* Confirmed manual filenames and source paths did not change, so no raw Markdown import or filename resolver update was needed.
* Kept stable doc IDs and registry order unchanged.

**Files Changed**:

* `src/extensions/trend-finder/reference-docs.ts` - updated registry descriptions only.

**BQC Fixes**:

* Contract alignment: registry IDs, source paths, Markdown imports, and filename resolver stayed aligned with unchanged manual filenames.

***

### Task T013 - Expand Reference mode registry tests

**Started**: 2026-06-08 06:17 **Completed**: 2026-06-08 06:21 **Duration**: 4 minutes

**Notes**:

* Added exact metadata expectations for every registered Reference document, including labels, titles, source paths, and description keywords.
* Added duplicate-free source path coverage and exhaustive ID lookup coverage.
* Added internal Trend Finder Markdown link extraction to verify registered cross-doc links resolve to Reference tabs.
* Added representative Phase 24 phrase assertions for updated manuals and a guard against example-specific Instagram/Reels product copy.

**Files Changed**:

* `src/extensions/trend-finder/__tests__/reference-docs.test.ts` - expanded registry, import, path, link, and boundary assertions.

**BQC Fixes**:

* Contract alignment: tests now fail if registry metadata, source paths, link resolution, or expected manual content drifts.

***

### Task T014 - Expand Markdown viewer tests

**Started**: 2026-06-08 06:21 **Completed**: 2026-06-08 06:24 **Duration**: 3 minutes

**Notes**:

* Expanded the viewer fixture with cross-doc links, a heading-hash link, local non-reference docs, and external links.
* Added assertions for focusable native Reference link buttons, hash-preserving cross-doc tab selection, local anchor links, code fallback for non-registered local docs, and external link safety attributes.
* Added Reference tab control coverage for the accessible tablist and keyboard tab switching.
* Focused viewer test passed after adjusting the test to use keyboard activation for Radix tab switching: `bun run test -- src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx` (1 file, 4 tests).

**Files Changed**:

* `src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx` - expanded Markdown viewer/link and Reference tab accessibility coverage.

**BQC Fixes**:

* Accessibility and platform compliance: tests now cover focusable native link buttons and keyboard-accessible Reference tab switching.

***

## Documentation Decisions

* Kept all Trend Finder manual filenames stable; Reference mode imports and source paths did not need rename handling.
* Treated committed Markdown manuals as the source of truth for Reference mode; no dynamic docs discovery was added.
* Documented Phase 24 features as current only where sessions 01 through 07 validation artifacts showed them landed.
* Kept public hosting, hosted observability, generated artifact commits, historical run selection, new source adapters, new source target fields, and unreviewed media/source expansion optional or deferred.
* Kept generated private runtime data, raw prompts, provider responses, raw source dumps, raw logs, raw billing payloads, credentials, account auth, local triage notes, private caches, local paths, Actor internals, and Dataset rows out of browser-visible documentation contracts.

## Changed Files Summary

* `docs/extensions/README_docs-extensions.md`
* `docs/extensions/trend-finder-scoring.md`
* `docs/extensions/trend-finder-pipeline.md`
* `docs/extensions/trend-finder-sources.md`
* `docs/extensions/trend-finder-ui-surfaces.md`
* `docs/extensions/trend-finder-runtime-and-provenance.md`
* `src/extensions/trend-finder/reference-docs.ts`
* `src/extensions/trend-finder/__tests__/reference-docs.test.ts`
* `src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx`
* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md`
* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/tasks.md`

***

### Task T015 - Update implementation notes

**Started**: 2026-06-08 06:24 **Completed**: 2026-06-08 06:26 **Duration**: 2 minutes

**Notes**:

* Added consolidated documentation decisions and intentionally deferred/manual items.
* Added a changed-files summary for the session.
* Confirmed no new durable project convention was introduced by the docs alignment pass.

**Files Changed**:

* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - added session decisions, deferred items, and changed-files summary.

**BQC Fixes**:

* None; documentation tracking task.

***

### Task T016 - Review changed docs against conventions

**Started**: 2026-06-08 06:26 **Completed**: 2026-06-08 06:29 **Duration**: 3 minutes

**Notes**:

* Reviewed changed docs and tests against `.spec_system/CONVENTIONS.md`.
* Confirmed changes use Trend Finder product language for the extension and do not add new global `findtrend` identifiers.
* Confirmed current implemented behavior is documented before optional/deferred paths.
* Confirmed local-only, browser-safe, and private-cache boundaries remain explicit.
* Noted that Markdown table wrapping will be normalized by the format check/fix step.

**Files Changed**:

* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded conventions review.

**BQC Fixes**:

* None; conventions review task.

***

### Task T017 - Run focused Reference mode registry tests

**Started**: 2026-06-08 06:29 **Completed**: 2026-06-08 06:31 **Duration**: 2 minutes

**Notes**:

* Ran `bun run test -- src/extensions/trend-finder/__tests__/reference-docs.test.ts`.
* Initial expanded assertion failed on Markdown line wrapping, so phrase matching now normalizes whitespace.
* A second assertion failed on phrase casing; the expected phrase was corrected to match the manual text.
* Final result: 1 test file passed, 6 tests passed.

**Files Changed**:

* `src/extensions/trend-finder/__tests__/reference-docs.test.ts` - normalized Phase 24 phrase assertions and corrected casing expectation.
* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded test result.

**BQC Fixes**:

* Contract alignment: registry phrase assertions now tolerate Markdown source wrapping while still enforcing the manual content contract.

***

### Task T018 - Run Markdown viewer tests

**Started**: 2026-06-08 06:31 **Completed**: 2026-06-08 06:33 **Duration**: 2 minutes

**Notes**:

* Ran `bun run test -- src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx`.
* Result: 1 test file passed, 4 tests passed.

**Files Changed**:

* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded viewer test result.

**BQC Fixes**:

* Accessibility and contract alignment: focused viewer tests cover native Reference link buttons, safe external links, local code fallback, hash links, and keyboard tab switching.

***

### Task T019 - Run format, lint, type, and focused test checks

**Started**: 2026-06-08 06:33 **Completed**: 2026-06-08 06:38 **Duration**: 5 minutes

**Notes**:

* Initial targeted Prettier check found formatting drift in `docs/extensions/README_docs-extensions.md`, `src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx`, `implementation-notes.md`, and `tasks.md`.
* Ran targeted Prettier write on only this session's touched files.
* Final targeted Prettier check passed.
* Targeted ESLint passed for `src/extensions/trend-finder/reference-docs.ts`, `src/extensions/trend-finder/__tests__/reference-docs.test.ts`, and `src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx`.
* Full app typecheck passed with `bun run typecheck`.
* Combined focused Reference mode tests passed: 2 test files, 10 tests.

**Commands**:

* `bunx prettier --check docs/extensions/README_docs-extensions.md docs/extensions/trend-finder-scoring.md docs/extensions/trend-finder-pipeline.md docs/extensions/trend-finder-sources.md docs/extensions/trend-finder-ui-surfaces.md docs/extensions/trend-finder-runtime-and-provenance.md src/extensions/trend-finder/reference-docs.ts src/extensions/trend-finder/__tests__/reference-docs.test.ts src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx .spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md .spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/tasks.md`
* `bunx eslint src/extensions/trend-finder/reference-docs.ts src/extensions/trend-finder/__tests__/reference-docs.test.ts src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx`
* `bun run typecheck`
* `bun run test -- src/extensions/trend-finder/__tests__/reference-docs.test.ts src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx`

**Files Changed**:

* `docs/extensions/README_docs-extensions.md` - Prettier wrapped the updated docs table.
* `src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx` - Prettier formatting.
* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded verification results and Prettier formatting.
* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/tasks.md` - Prettier formatting.

**BQC Fixes**:

* None; verification task.

***

### Task T020 - Validate ASCII, LF, and final documentation consistency

**Started**: 2026-06-08 06:38 **Completed**: 2026-06-08 06:43 **Duration**: 5 minutes

**Notes**:

* Initial final Prettier check found only `implementation-notes.md` needed wrapping after the T019 command log.
* Formatted `implementation-notes.md`, then reran the final check set.
* Final targeted Prettier check passed.
* ASCII scan found no non-ASCII characters in touched docs, tests, registry code, or session files.
* CRLF scan found no CRLF line endings in touched docs, tests, registry code, or session files.
* `git diff --check` passed for touched files.
* Final consistency scan found no Instagram/Reels product copy, no default public deployment wording, and no unsafe raw-log/billing/cache exposure phrasing.

**Commands**:

* `bunx prettier --check docs/extensions/README_docs-extensions.md docs/extensions/trend-finder-scoring.md docs/extensions/trend-finder-pipeline.md docs/extensions/trend-finder-sources.md docs/extensions/trend-finder-ui-surfaces.md docs/extensions/trend-finder-runtime-and-provenance.md src/extensions/trend-finder/reference-docs.ts src/extensions/trend-finder/__tests__/reference-docs.test.ts src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx .spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md .spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/tasks.md`
* `LC_ALL=C grep -RInP '[^\x00-\x7F]' [touched files] || true`
* `grep -RIl $'\r' [touched files] || true`
* `git diff --check -- [touched files]`
* `rg -n "\b(Instagram|Reels)\b|default public deployment|public by default|raw billing payloads.*show|raw logs.*show|private cache.*Reference mode reads" docs/extensions/README_docs-extensions.md docs/extensions/trend-finder-scoring.md docs/extensions/trend-finder-pipeline.md docs/extensions/trend-finder-sources.md docs/extensions/trend-finder-ui-surfaces.md docs/extensions/trend-finder-runtime-and-provenance.md || true`

**Files Changed**:

* `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` - recorded final consistency results and Prettier formatting.

**BQC Fixes**:

* None; final verification task.

***


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