v4 addresses three concerns from m on 2026-05-05 in priority order:
1. Card-click → compute deadline → add-to-project (v3 cards were dead-ends).
2. Filter narrowing bug — slug → concept_id allow-list dropped per-leaf
proceeding_type_code, so picking "UPC infringement opposing party"
leaked DE/EPA/DPMA pills. Confirmed via DB query: 25+ leaves overbroad.
3. RoP-rigorous tree audit: 6 confirmed seed errors (Hinweisbeschluss
DE_INF mismap, notice-of-defence-intention UPC_INF mismap, three
cost-appeal notice-of-appeal mismaps, request-for-discretionary-review
needs UPC_APP_ORDERS narrowing), plus reply-to-cross-appeal coverage
gap and bescheid-mit-frist orphan.
Plan splits into three independent phases (A: filter fix, no schema; B:
card-click flow + new calculate-rule endpoint; C: taxonomy migration 052
without RAISE EXCEPTION coverage gates per last night's outage lesson).
Inventor → coder gate held: no production code in this commit.
30ac337a78