> 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-session11-theme-rollups-and-outlier-ideas/tasks.md).

# Task Checklist

**Session ID**: `phase27-session11-theme-rollups-and-outlier-ideas` **Total Tasks**: 24 **Estimated Duration**: 3-4 hours **Created**: 2026-06-13

***

## Legend

* `[x]` = Completed
* `[ ]` = Pending
* `[P]` = Parallelizable (can run with other \[P] tasks)
* `[SNNMM]` = Session reference (NN=phase number, MM=session number)
* `TNNN` = Task ID

***

## Progress Summary

| Category       | Total  | Done   | Remaining |
| -------------- | ------ | ------ | --------- |
| Setup          | 3      | 3      | 0         |
| Foundation     | 6      | 6      | 0         |
| Implementation | 10     | 10     | 0         |
| Testing        | 5      | 5      | 0         |
| **Total**      | **24** | **24** | **0**     |

***

## Setup (3 tasks)

Initial configuration and environment preparation.

* [x] T001 \[S2711] Verify Session 11 prerequisites, source constraints, and no-embedding-dependency boundary (`.spec_system/PRD/phase_27/session_11_theme_rollups_and_outlier_ideas.md`)
* [x] T002 \[S2711] Confirm current focused test commands, Workbench targets, and cache regression targets (`package.json`)
* [x] T003 \[S2711] Create implementation-notes scaffold for session progress tracking (`.spec_system/specs/phase27-session11-theme-rollups-and-outlier-ideas/implementation-notes.md`)

***

## Foundation (6 tasks)

Core structures and base implementations.

* [x] T004 \[S2711] \[P] Create theme rollup helper for analyst label acceptance, keyword-overlap fallback, stable IDs, and deterministic ordering (`scripts/extensions/trend-finder/theme-rollups.ts`)
* [x] T005 \[S2711] \[P] Create outlier idea helper for top-N source-local outlier selection, fallback text, cache candidates, provenance, and bounds (`scripts/extensions/trend-finder/outlier-ideas.ts`)
* [x] T006 \[S2711] \[P] Extend Trend Finder schema with topic theme metadata and outlier idea fields using additive defaults and reference-safe parsing (`src/extensions/trend-finder/schema.ts`)
* [x] T007 \[S2711] \[P] Extend analyst contract for optional theme labels and outlier idea outputs with schema-validated input and explicit error mapping (`scripts/lib/ai-runtime/trend-analyst.ts`)
* [x] T008 \[S2711] \[P] Extend Workbench model contracts for theme groups, flat/grouped state, outlier idea labels, and deterministic search text (`src/extensions/trend-finder/signal-workbench-model.ts`)
* [x] T009 \[S2711] Create embedding fallback clustering ADR with investigated options and no-runtime-dependency recommendation (`docs/adr/0002-trend-finder-embedding-fallback-clustering.md`)

***

## Implementation (10 tasks)

Main feature implementation.

* [x] T010 \[S2711] Wire deterministic fallback theme labels into fallback topic generation without inventing source, metric, date, or URL references (`scripts/extensions/trend-finder/topics.ts`)
* [x] T011 \[S2711] Apply theme rollups through collector topic assembly with timeout-safe failure-path handling and bounded warning output (`scripts/extensions/trend-finder/collector.ts`)
* [x] T012 \[S2711] Merge analyst theme labels and outlier idea outputs with deterministic fallback and unknown-reference rejection (`scripts/lib/ai-runtime/trend-analyst.ts`)
* [x] T013 \[S2711] Wire top-N outlier idea candidate selection into the collector with bounded ordering and no new source calls (`scripts/extensions/trend-finder/collector.ts`)
* [x] T014 \[S2711] Reuse enrichment cache entries for unchanged outlier ideas with idempotency protection and sanitized summaries (`scripts/extensions/trend-finder/collector.ts`)
* [x] T015 \[S2711] Render Workbench theme group headers and grouped empty states with stable layout and revalidation on filter changes (`src/extensions/trend-finder/views/signal-workbench-view.tsx`)
* [x] T016 \[S2711] Add Workbench grouped/flat view controls with platform-appropriate accessibility labels, focus management, and input support (`src/extensions/trend-finder/components/signal-workbench-controls.tsx`)
* [x] T017 \[S2711] Render outlier idea details in Workbench rows with bounded text, provenance labels, and keyboard-accessible expanded content (`src/extensions/trend-finder/components/signal-workbench-table.tsx`)
* [x] T018 \[S2711] Project theme labels and outlier idea summaries through shared Trend Finder view models with exhaustive state handling (`src/extensions/trend-finder/view-model.ts`)
* [x] T019 \[S2711] Add bounded fixture coverage for theme labels, grouped rows, outlier ideas, and cache summary states (`src/extensions/trend-finder/fixtures.ts`)

***

## Testing (5 tasks)

Verification and quality assurance.

* [x] T020 \[S2711] \[P] Add focused theme helper tests for fallback labels, analyst label validation, stable IDs, deterministic ordering, and caps (`scripts/extensions/trend-finder/__tests__/theme-rollups.test.ts`)
* [x] T021 \[S2711] \[P] Add focused outlier idea and cache regression tests for top-N selection, cache hits, stale/skipped states, sanitized summaries, and bounds (`scripts/extensions/trend-finder/__tests__/outlier-ideas.test.ts`, `scripts/extensions/trend-finder/__tests__/enrichment-cache.test.ts`)
* [x] T022 \[S2711] \[P] Add schema and analyst tests for legacy defaults, invalid references, invented metadata rejection, theme labels, and outlier idea outputs (`src/lib/__tests__/trend-finder-schema.test.ts`, `scripts/lib/ai-runtime/__tests__/trend-analyst.test.ts`)
* [x] T023 \[S2711] \[P] Add collector and Workbench tests for theme publication, cache reuse, grouped/flat rendering, search, empty states, and outlier idea display (`scripts/extensions/trend-finder/__tests__/collector.test.ts`, `src/extensions/trend-finder/__tests__/signal-workbench-model.test.ts`, `src/extensions/trend-finder/components/__tests__/signal-workbench-view.test.tsx`)
* [x] T024 \[S2711] Run focused validation, typechecks, ASCII check, and record results in implementation notes (`.spec_system/specs/phase27-session11-theme-rollups-and-outlier-ideas/implementation-notes.md`)

***

## Completion Checklist

Before marking session complete:

* [x] All tasks marked `[x]`
* [x] All tests passing
* [x] All files ASCII-encoded
* [x] implementation-notes.md updated
* [x] Ready for the validate workflow step

***

## Next Steps

Run the validate workflow step to verify session completeness.


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