> 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/phase29-session14-one-to-watch-surface/implementation_summary.md). # Implementation Summary **Session ID**: `phase29-session14-one-to-watch-surface` **Completed**: 2026-06-21 **Duration**: 0.7 hours *** ## Overview Completed the Trend Finder One-to-Watch surface. The session projects bounded watch rows from existing prediction, Story Log, retro, calibration, reception, corroboration, and current topic context; ranks them deterministically; labels unknown or unavailable calibration honestly; and publishes the same safe rows through Trends, Brief, copy/export, and static Brief output without adding a new source, model, dependency, database schema, credential, hosted storage, or third-party transfer. *** ## Deliverables ### Files Created No standalone production files were created. The session added workflow artifacts under `.spec_system/specs/phase29-session14-one-to-watch-surface/`. ### Files Modified | File | Changes | | ------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `src/extensions/trend-finder/view-model.ts` | Added One-to-Watch view-model types, candidate collection, topic joins, deterministic ranking, support labels, calibration honesty states, row bounds, empty states, and older-payload fallbacks. | | `src/extensions/trend-finder/views/trends-view.tsx` | Added the compact One-to-Watch Trends strip and visibility menu wiring while preserving the mobile first-viewport contract. | | `src/extensions/trend-finder/views/brief-view.tsx` | Added the full Brief One-to-Watch section, summary metric, visibility item, topic links, empty states, and responsive wrapping. | | `src/extensions/trend-finder/brief-export-model.ts` | Added One-to-Watch Markdown and JSON export rows through the existing bounded private-string cleaner. | | `scripts/extensions/trend-finder/static-brief-export.ts` | Added strict One-to-Watch report schema, defaults, bounded projection, privacy checks, and static report wiring. | | `scripts/extensions/trend-finder/static-brief-renderer.ts` | Rendered escaped One-to-Watch static Brief rows, support details, calibration context, caveats, evidence IDs, and empty states without unsafe links or media embeds. | | `src/extensions/trend-finder/__tests__/view-model.test.ts` | Added ranking, tie-break, support-label, due-state, unavailable-calibration, no mock accuracy, and empty-archive coverage. | | `src/extensions/trend-finder/views/__tests__/brief-view.test.tsx` | Added Brief rendering, empty-state, unavailable-calibration, and no row-accuracy percentage coverage. | | `src/extensions/trend-finder/__tests__/brief-export-model.test.ts` | Added Markdown/JSON One-to-Watch export and private-string redaction coverage. | | `scripts/extensions/trend-finder/__tests__/static-brief-export.test.ts` | Added static projection bounds, unknown calibration, strong support label, and privacy coverage. | | `scripts/extensions/trend-finder/__tests__/static-brief-renderer.test.ts` | Added static renderer escaping, empty-state, unknown-calibration, unsafe-link, and no-media coverage. | | `tests/e2e/trend-finder.spec.ts` | Added browser-visible Trends and Brief One-to-Watch assertions. | | `tests/e2e/trend-finder-static-brief.spec.ts` | Added browser-visible static Brief One-to-Watch assertions. | | `docs/extensions/trend-finder-ui-surfaces.md` | Documented live One-to-Watch UI behavior and calibration honesty. | | `docs/extensions/trend-finder-history.md` | Documented prediction/retro source of truth and why no per-row accuracy claim is inferred. | | `docs/extensions/trend-finder-pipeline.md` | Documented static Brief projection, payload, and privacy expectations. | *** ## Technical Decisions 1. **Presentation ranking only**: One-to-Watch ordering is deterministic view-model ranking, not a new prediction model or generated claim. 2. **Calibration honesty by default**: Rows use explicit unavailable, unresolved, stale pending, unknown, or aggregate-calibrated labels and never publish mock row-level accuracy percentages. 3. **Existing records only**: Rows come from existing prediction, Story Log, retro, calibration, reception, corroboration, and current topic fields. 4. **Bounded export contract**: Copy/export and static Brief output consume bounded projected fields, clean private-looking strings, and omit raw rows. 5. **Static output stays media-free**: The static Brief section escapes text and attributes and does not add links, images, iframes, audio, video, embeds, objects, or remote scripts for watch rows. *** ## Test Results | Metric | Value | | -------- | ------------- | | Tests | 3858 | | Passed | 3858 | | Coverage | Not collected | Validation also passed `bun run typecheck`, `bun run typecheck:scripts`, focused Playwright checks, `bun run build`, `bun run lint`, scoped Prettier checks, `git diff --check`, `bun run runtime:check-private`, Trend Finder payload-size validation at 457150 bytes against the 1048576-byte limit, ASCII/LF validation, security review, and behavioral quality checks. The known pre-existing full bundle gzip overage remains outside this session's Trend Finder payload gate. *** ## Lessons Learned 1. One-to-Watch rows are safest when they reuse bounded prediction/retro records and make missing calibration explicit instead of smoothing it over. 2. Static Brief additions should share the live view-model semantics but still use a strict static schema so older generated reports parse safely. 3. Export and renderer tests need to prove both privacy cleanliness and absence of media/link expansion as soon as a new section becomes browser-visible. *** ## Future Considerations Items for future sessions: 1. Keep Session 15 pre-run estimates aligned with the same browser-safe and bounded static Brief projection patterns. 2. Preserve the calibration-honesty wording during Session 18 documentation validation and release review. 3. Treat any request for new watch-row sources, social data, podcasts, transcripts, or media embeds as compliance-gated work. *** ## Session Statistics * **Tasks**: 20 completed * **Files Created**: 0 production files plus session workflow artifacts * **Files Modified**: 16 source/test/doc deliverables plus workflow and version metadata * **Tests Added**: 5 focused test areas * **Blockers**: 0 resolved --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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