> 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/phase15-session02-live-data-merge-boundary/tasks.md). # Task Checklist **Session ID**: `phase15-session02-live-data-merge-boundary` **Total Tasks**: 16 **Estimated Duration**: 3-4 hours **Created**: 2026-05-31 *** ## 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 | 2 | 2 | 0 | | Foundation | 4 | 4 | 0 | | Implementation | 6 | 6 | 0 | | Testing | 4 | 4 | 0 | | **Total** | **16** | **16** | **0** | *** ## Setup (2 tasks) Initial configuration and environment preparation. * [x] T001 \[S1502] Verify Session 01 prerequisites, current live-data writer files, and focused test commands (`.spec_system/specs/phase15-session01-scheduler-config-contract/validation.md`) * [x] T002 \[S1502] Inventory aggregate-emitted live-data branches and compare them with the planned ownership map (`scripts/aggregate.ts`) *** ## Foundation (4 tasks) Core structures and base implementations. * [x] T003 \[S1502] \[P] Finalize typed host/local branch ownership constants with representative root branches (`scripts/lib/aggregate-live-data-write.ts`) * [x] T004 \[S1502] \[P] Finalize typed extension branch ownership constants for `extensions.items.trend-finder` (`scripts/lib/aggregate-live-data-write.ts`) * [x] T005 \[S1502] Verify the generated-data lock wrapper uses a private lock path distinct from scheduler run locks with cleanup on scope exit for all acquired resources (`scripts/lib/aggregate-live-data-write.ts`) * [x] T006 \[S1502] Verify scheduler lock stale-recovery semantics remain reusable for generated-data locking without weakening owner checks (`scripts/lib/scheduler/locks.ts`) *** ## Implementation (6 tasks) Main feature implementation. * [x] T007 \[S1502] Implement or refine full-write validation so complete aggregate output fails before write when read-side validation would mutate it (`scripts/lib/aggregate-live-data-write.ts`) * [x] T008 \[S1502] Implement or refine host/local scoped merge behavior preserving `extensions` with idempotency protection, transaction boundaries, and compensation on failure (`scripts/lib/aggregate-live-data-write.ts`) * [x] T009 \[S1502] Implement or refine Trend Finder scoped merge behavior preserving host/local root data and other extension items with schema-validated input and explicit error mapping (`scripts/lib/aggregate-live-data-write.ts`) * [x] T010 \[S1502] Implement or refine invalid existing live-data fallback to `src/data/live-data.example.json` with explicit loading, empty, error, and offline states represented as safe errors (`scripts/lib/aggregate-live-data-write.ts`) * [x] T011 \[S1502] Route aggregate direct writes through the validated producer gate while preserving `bun run aggregate` compatibility (`scripts/aggregate.ts`) * [x] T012 \[S1502] Update scheduled aggregate runbook ownership, fallback, lock, and privacy guidance without claiming scoped jobs are runnable yet (`docs/runbooks/scheduled-aggregate.md`) *** ## Testing (4 tasks) Verification and quality assurance. * [x] T013 \[S1502] \[P] Add or tighten unit tests for branch preservation, invalid base fallback, missing Trend Finder branch, and private-field rejection (`scripts/lib/__tests__/aggregate-live-data-write.test.ts`) * [x] T014 \[S1502] \[P] Add or tighten unit tests for shared lock blocking, stale recovery, release cleanup, and distinct generated-data lock path (`scripts/lib/__tests__/aggregate-live-data-write.test.ts`) * [x] T015 \[S1502] Run focused tests and script typecheck for live-data writer and scheduler lock behavior (`package.json`) * [x] T016 \[S1502] Run `git diff --check` and validate ASCII-only session artifacts (`.spec_system/specs/phase15-session02-live-data-merge-boundary/tasks.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 implement workflow step to begin AI-led implementation. --- # Agent Instructions This documentation is published with GitBook. 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