> 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_summary.md).

# Implementation Summary

**Session ID**: `phase24-session08-cross-surface-documentation-reference-mode` **Completed**: 2026-06-08 **Duration**: 1 hour

***

## Overview

Aligned the Phase 24 Trend Finder manuals with the implemented feature set and kept in-app Reference mode synchronized with the committed Markdown source of truth. The session tightened the docs for scoring, pipeline, sources, UI surfaces, and runtime/provenance, then expanded the Reference mode registry and viewer tests so the manuals remain importable and linkable without drifting into dynamic docs discovery.

***

## Deliverables

### Files Created

None.

### Files Modified

| File                                                                                                      | Changes                                                                                                       |
| --------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- |
| `docs/extensions/README_docs-extensions.md`                                                               | Aligned the Trend Finder extension index with Reference mode, local-only boundaries, and static Brief export. |
| `docs/extensions/trend-finder-scoring.md`                                                                 | Clarified source-local baselines, placement exclusions, bounded lifts, and actionability guidance.            |
| `docs/extensions/trend-finder-pipeline.md`                                                                | Clarified enrichment, spend, scheduler, live progress, retention, and static export boundaries.               |
| `docs/extensions/trend-finder-sources.md`                                                                 | Aligned reviewed source setup, target fields, source spend, cache state, and placement handling.              |
| `docs/extensions/trend-finder-ui-surfaces.md`                                                             | Documented Source Setup, triage, media assets, first-run controls, live progress, and Reference mode.         |
| `docs/extensions/trend-finder-runtime-and-provenance.md`                                                  | Aligned Engine Replay labels, progress, spend, asset failures, and Reference mode boundaries.                 |
| `src/extensions/trend-finder/reference-docs.ts`                                                           | Updated Reference mode descriptions to match the current manual scope.                                        |
| `src/extensions/trend-finder/__tests__/reference-docs.test.ts`                                            | Expanded registry, import, path, and link assertions for the updated manuals.                                 |
| `src/extensions/trend-finder/components/__tests__/trend-reference-doc-viewer.test.tsx`                    | Expanded Markdown viewer and Reference tab assertions for the updated docs behavior.                          |
| `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/implementation-notes.md` | Recorded task-by-task implementation notes and verification results.                                          |
| `.spec_system/specs/phase24-session08-cross-surface-documentation-reference-mode/tasks.md`                | Recorded completed task checklist updates.                                                                    |

***

## Technical Decisions

1. **Committed Markdown stays authoritative**: Reference mode continues to import the tracked manuals directly instead of discovering docs dynamically.
2. **Whitespace-normalized phrase checks**: Registry tests tolerate Markdown wrapping while still enforcing the intended manual content contract.
3. **Stable registry metadata**: Manual filenames and source paths stayed unchanged so the Reference mode registry did not need a rename migration.

***

## Test Results

| Metric   | Value |
| -------- | ----- |
| Tests    | 10    |
| Passed   | 10    |
| Coverage | N/A   |

Quality gates passed:

* `bunx prettier --check ...`
* `bunx eslint ...`
* `bun run typecheck`
* Focused Reference mode test files
* ASCII scan
* CRLF scan
* `git diff --check`

***

## Lessons Learned

1. Reference mode docs work best when the manual headings, registry metadata, and tests are kept in lockstep.
2. Markdown phrase assertions need whitespace normalization so line wrapping does not create false failures.

***

## Future Considerations

Items for future sessions:

1. Complete the remaining phase 24 validation and release hardening session.
2. Keep any later Reference mode updates aligned with the committed manual filenames and link targets.

***

## Session Statistics

* **Tasks**: 20 completed
* **Files Created**: 0
* **Files Modified**: 11
* **Tests Added**: 0
* **Blockers**: 0 resolved


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