docs(phase-9c): plan for picker integration tests + verification
Two tasks. Same format as 8c.
Task 1 — tests/integration/intake-picker.test.ts mirrors the Phase 8
shape. Five describe groups:
- picker page (multi-project list, single-project redirect,
zero-projects fallback)
- wizard URL (cross-client projectId 404, show_in_intake=false 404)
- submission flow (card lands on chosen project's inbox,
cross-client refused, hostile body cannot override server-set
fields, per-project cap isolates)
- Phase 8 backwards compat (per-project link still resolves through
the picker to the wizard URL)
Task 2 — full verification: unit, integration, build, colour
check, manual walkthrough, Phase 8 backwards-compat walkthrough.