> 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/phase27-session03-data-driven-radar-aliases-and-watching-state/implementation_summary.md). # Implementation Summary **Session ID**: `phase27-session03-data-driven-radar-aliases-and-watching-state` **Completed**: 2026-06-12 **Duration**: 1.7 hours *** ## Overview Session 03 completed the Tier 1 Alpha Radar adoption path for Trend Finder. The Signal Radar now plots validated topic opportunity points instead of decorative source positions, topic aliases are visible and searchable, `watching` is available as browser-local triage state across Trends, Hidden Gems, and Signal Workbench, and the Workbench has a deterministic cross-source outlier preset over existing source-local lift fields. The work kept generated Watchlist rows read-only, avoided collector, source, AI, and API changes, and preserved explicit unavailable states for weak or missing signal data. *** ## Deliverables ### Files Created | File | Purpose | Lines | | ------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------- | ----- | | `.spec_system/specs/phase27-session03-data-driven-radar-aliases-and-watching-state/spec.md` | Session scope and implementation contract. | 377 | | `.spec_system/specs/phase27-session03-data-driven-radar-aliases-and-watching-state/tasks.md` | 20-task checklist and completion tracker. | 94 | | `.spec_system/specs/phase27-session03-data-driven-radar-aliases-and-watching-state/implementation-notes.md` | Task-by-task implementation record. | 537 | | `.spec_system/specs/phase27-session03-data-driven-radar-aliases-and-watching-state/security-compliance.md` | Security and GDPR review. | 89 | | `.spec_system/specs/phase27-session03-data-driven-radar-aliases-and-watching-state/validation.md` | Validation report and quality gates. | 248 | | `src/extensions/trend-finder/__tests__/signal-radar-projection.test.ts` | Radar projection, fallback band, sizing, movement tone, and ordering tests. | 117 | | `.spec_system/specs/phase27-session03-data-driven-radar-aliases-and-watching-state/IMPLEMENTATION_SUMMARY.md` | Session closeout summary. | 127 | ### Files Modified | File | Changes | | --------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | | `.spec_system/PRD/phase_27/PRD_phase_27.md` | Marked Session 03 complete, updated progress to 3/12, and advanced upcoming work to Session 04. | | `.spec_system/state.json` | Added Session 03 to completed sessions and history; cleared current session. | | `package.json` | Bumped patch version from 0.1.305 to 0.1.306. | | `README.md` | Updated the displayed project version to 0.1.306. | | `src/extensions/trend-finder/view-model.ts` | Added topic radar projection, alias chip helpers, watching summary labels, and deterministic radar ordering. | | `src/extensions/trend-finder/components/signal-radar.tsx` | Replaced decorative source coordinates with topic point buttons, fallback legend states, selection, aliases, and reduced-motion safeguards. | | `src/extensions/trend-finder/views/trends-view.tsx` | Wired radar selection, watched filters, watching toggles, watched counts, and explicit no-watched empty state. | | `src/extensions/trend-finder/components/trend-card.tsx` | Rendered bounded topic alias chips on card/detail surfaces. | | `src/extensions/trend-finder/signal-workbench-storage.ts` | Added `watching` storage state with legacy parsing, dedupe, caps, malformed-storage recovery, and generated-data isolation. | | `src/extensions/trend-finder/components/signal-triage-controls.tsx` | Added watching control support with disabled-while-saving behavior and accessible status. | | `src/extensions/trend-finder/signal-workbench-model.ts` | Added alias search, watching facets/filters, outlier preset projection, unavailable labels, and deterministic sort values. | | `src/extensions/trend-finder/components/signal-workbench-controls.tsx` | Added outlier preset controls and helper copy. | | `src/extensions/trend-finder/components/signal-workbench-table.tsx` | Surfaced watching state, outlier lift, and source-local baseline context in rows. | | `src/extensions/trend-finder/views/signal-workbench-view.tsx` | Wired preset state, sort reset, pagination bounds, and run re-entry reset behavior. | | `src/extensions/trend-finder/views/hidden-gems-view.tsx` | Added watched filters, watching toggles, watched counts, pagination reset, and explicit no-watched empty state. | | `src/extensions/trend-finder/fixtures.ts` | Added alias, missing-axis, watched candidate, and source-local outlier fixture coverage. | | `src/extensions/trend-finder/__tests__/signal-workbench-storage.test.ts` | Covered watching parse/persist/dedupe, legacy states, caps, reset, malformed rows, and write failures. | | `src/extensions/trend-finder/__tests__/signal-workbench-model.test.ts` | Covered alias search, watching facets/filters, outlier ordering, unavailable rows, and non-mutation. | | `src/extensions/trend-finder/components/__tests__/signal-workbench-view.test.tsx` | Covered watching controls and outlier preset controls. | | `src/lib/__tests__/trend-finder-dashboard.test.tsx` | Covered Trends and Hidden Gems watched empty states and adjusted additive fixture expectations. | *** ## Technical Decisions 1. **Project before rendering**: Radar math, fallback labels, sizing, movement tones, aliases, and deterministic ordering live in view-model helpers so the UI consumes sanitized rows instead of deriving raw payload semantics inline. 2. **Browser-local watching boundary**: `watching` extends the existing Signal Workbench localStorage triage contract and never mutates generated Watchlist rows, generated data, exports, caches, or source payloads. 3. **Explicit unavailable states**: Missing radar axes, low-sample source-local baselines, placement-excluded rows, and unsupported rows stay visible as unavailable or fallback states instead of being promoted. *** ## Test Results | Metric | Value | | -------- | ------- | | Tests | 3345 | | Passed | 3345 | | Coverage | Not run | Commands validated: * `bun run typecheck` - passed. * `bun run typecheck:scripts` - passed. * Focused Trend Finder tests - passed, 5 files / 53 tests. * `bun run test -- --reporter=dot` - passed, 269 files / 3345 tests. * ASCII and LF scans over changed and untracked files - passed. *** ## Lessons Learned 1. Radar coordinates must be treated as view-model data, not presentation decoration, so missing signal fields cannot imply false opportunity. 2. Browser-local triage state can carry operator workflow without weakening the generated-data immutability boundary. 3. Full-suite copy assertions are useful when adding dense count labels to existing dashboard surfaces. *** ## Future Considerations Items for future sessions: 1. Session 04 can use the topic radar projection and watching state as stable UI inputs while adding daily series and sparklines. 2. Session 05 and Session 07 should keep the same explicit unavailable-state pattern for acceleration, burst, convergence, and trajectory metrics. 3. Later lifecycle radar coloring should build on the existing topic point projection rather than reintroducing source-name positioning. *** ## Session Statistics * **Tasks**: 20 completed * **Files Created**: 7 * **Files Modified**: 20 * **Tests Added**: 5 test files added or updated * **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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