d6ebcb6233
20 tasks across 5 phases:
1. Data model foundation (area_kind, last_activity_at, paired
work centres, feature flag) — 5 tasks
2. Card state computation + mini-timeline (precedence helpers,
card_state compute, mini_timeline_json) — 3 tasks
3. Backend endpoint + landing dispatch — 2 tasks
4. Frontend components bottom-up (tokens, mini-timeline, card,
column header, KPI tile, filter chip, top-level action) —
7 tasks
5. QA + flip default — 3 tasks
Each task has TDD-style steps (write failing test → run → implement
→ run → commit) with full code blocks and exact file paths. Bakes
in project-specific patterns from CLAUDE.md (OWL template scope
rule 20, t-out markup wrap, no SCSS @import, dark-mode compile-
time branch).
Self-review pass confirms 1-to-1 coverage of every spec section
and explicit deferral of every §13 Phase 2 item.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>