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# Implementation Summary

**Session ID**: `phase29-session13-static-brief-archival-and-richness` **Completed**: 2026-06-21 **Duration**: 1.9 hours

***

## Overview

Completed the Trend Finder static Brief archival and richness session. The static Brief exporter now supports opt-in numbered archive runs with a relative `latest.html` pointer, keeps default non-archive output compatible, adds archive metadata to manifests and summaries, renders denser topic and evidence context from already-published fields, and fails closed on unsafe latest links, private strings, or media embeds.

***

## Deliverables

### Files Created

| File                                                                     | Purpose                                                                                           | Lines |
| ------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------- | ----- |
| `scripts/extensions/trend-finder/static-brief-archive.ts`                | Archive run discovery, safe path validation, latest pointer rendering, and atomic write planning. | 276   |
| `scripts/extensions/trend-finder/__tests__/static-brief-archive.test.ts` | Unit coverage for archive numbering, pointer output, invalid names, and contained write plans.    | 98    |

### Files Modified

| File                                                                      | Changes                                                                                                             |
| ------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------- |
| `scripts/extensions/trend-finder/static-brief-export.ts`                  | Adds archive options, manifest metadata, summary fields, promotion/rollback flow, and richer report projection.     |
| `scripts/extensions/trend-finder/static-brief-renderer.ts`                | Renders archive metadata, richer signal chips, evidence context labels, and responsive styles without media embeds. |
| `scripts/extensions/trend-finder/static-brief-qa.ts`                      | Adds archive metadata alignment checks, latest pointer validation, media-embed rejection, and privacy coverage.     |
| `scripts/trend-finder-export-brief.ts`                                    | Adds `--archive` parsing, help text, human output, JSON output, and redacted archive-mode errors.                   |
| `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts`   | Covers default compatibility, archive writes, latest pointer updates, manifests, CLI output, and rollback.          |
| `scripts/extensions/trend-finder/__tests__/static-brief-renderer.test.ts` | Covers richer static Brief rendering and no-media output.                                                           |
| `scripts/extensions/trend-finder/__tests__/static-brief-qa.test.ts`       | Covers archive metadata, unsafe latest pointer links, private strings, and media/embed failures.                    |
| `tests/e2e/trend-finder-static-brief.spec.ts`                             | Opens an archived report through `latest.html` and checks privacy, public links, and desktop/mobile overflow.       |
| `docs/extensions/trend-finder-pipeline.md`                                | Documents archive mode, default compatibility, privacy behavior, failure safety, and no-media boundary.             |
| `docs/commands.md`                                                        | Documents the archive CLI flag, output layout, side effects, and local-only generated report guidance.              |

***

## Technical Decisions

1. **Archive mode stays opt-in**: Default `index.html` and `manifest.json` output remains compatible for existing operators and tests.
2. **Relative latest pointer**: `latest.html` links to archived runs with relative report paths so local artifacts can move without leaking private paths.
3. **Fail before promotion**: QA and privacy scans run before output promotion, and pointer failures remove the new run while preserving prior output.
4. **Existing fields only**: Richness uses already-published attention, reception, polarity, corroboration, and evidence-rationale fields without new collection.
5. **No media embedding**: The renderer and QA explicitly block inline image, iframe, video, audio, embed, object, and remote script output.

***

## Test Results

| Metric   | Value         |
| -------- | ------------- |
| Tests    | 3845          |
| Passed   | 3845          |
| Coverage | Not collected |

Validation also passed typecheck, script typecheck, private-artifact scan, Trend Finder payload budget, focused Prettier checks, `git diff --check`, and fixture-backed CLI smoke for dry-run, default write, and archive write. A full bundle budget check still reports an existing total client JS gzip overage outside this session's changed script/doc/test scope.

***

## Lessons Learned

1. Static report archival should share the same QA/privacy gate as default export so compatibility and safety stay coupled.
2. Latest-pointer promotion needs explicit rollback coverage because it is the highest-risk write after the run directory is created.
3. Richer static Brief sections are safest when they consume bounded projection fields instead of raw payload branches.

***

## Future Considerations

Items for future sessions:

1. Keep Session 14 One-To-Watch output compatible with both default and archive static Brief export shapes.
2. Reuse archive manifest metadata if future operator surfaces need static Brief history links.
3. Treat any request for thumbnails, transcripts, audio, or embeds as compliance-gated work rather than static Brief polish.

***

## Session Statistics

* **Tasks**: 20 completed
* **Files Created**: 2 source/test files plus session workflow artifacts
* **Files Modified**: 10 source/test/doc deliverables plus workflow and version metadata
* **Tests Added**: 4 focused test areas
* **Blockers**: 0 resolved


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