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feat(prd): one transitional PRD authority — RI-4-001 (#1275) (#1294)
Co-authored-by: fargo <[email protected]>
2026-08-18 05:56:51 +00:00

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# Scratchpad — RI-4-001 One transitional PRD authority (RI-N3, #1275)
- Objective: single PrdService authority in `@mosaicstack/prdy`; `mosaic prdy` and
`mission --plan` become thin adapters; mission↔PRD linkage persisted on disk;
Markdown export is a labeled generated view (never read back); import is
validated/conflict-aware with typed refusals.
- Budget: ~35K tokens (card cap). Baselines: prdy build/lint rc=0, 0 tests;
mosaic build rc=0 (after root turbo build), lint rc=0, 1548 tests pass;
root build rc=0.
- Plan: (1) extend store schema (version, missions linkage) (2) PrdService +
typed errors (3) wizard/cli route through service (4) mosaic adapters
(5) contract specs both packages (6) gates (7) sabotage control (8) report
to /var/tmp/ri-050/ri-4-001-report.md.
- Decisions:
- Linkage lives ON the PRD document (`missions` array) — one authority file,
survives restart, no sidecar sync problems.
- `version` = content revision of sections/status (bumped by update/import
accept). Linkage writes bump `updatedAt` only, so ids/versions stay stable
for the card's "stable ids/versions" contract.
- Mission version marker = `mission.updatedAt` (gateway MissionInfo has no
numeric version field).
- Import reads YAML documents only — never the exported Markdown (keeps the
"no code path reads exported Markdown" invariant).
- Import of an existing id with identical core content → `identical` no-op;
divergent → typed `PrdImportConflictError` carrying proposed successor
(existing.version + 1, status draft, linkages preserved). Original bytes
untouched until explicit `acceptSuccessor`.
- `requirementIds` default `[]` at the mission command (no requirement
selection UI yet) — service accepts ids when a caller has them.
- Progress log:
- [16:35] baselines captured (prdy 0 tests; mosaic 1548 after root build; root build rc=0)
- [16:38] store schema v2 + PrdService + wizard/cli rerouted; prdy build/lint green
- [16:40] mosaic adapters done; prdy spec 20/20 (found+fixed: import project-path leak, empty-store typed error, YAML timestamp coercion)
- [16:44] mosaic specs 9/9 (fixed commander from:'user' argv, vi.mock hoisting, restoreAllMocks wiping factory mocks)
- [16:45] all gates green; 4 commits (e291bfb, 2c5d208, a23826c, 540d6f1)
- [16:46] sabotage: linkage write removed → prdy 3 fail / mosaic 2 fail, 1548/1548 pre-existing pass; restored byte-identically; re-green 20/20 + 1557/1557
- [16:47] report written to /var/tmp/ri-050/ri-4-001-report.md — card complete