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chore(planning): close phase 8 — verification decision recorded (CH as 08.1), direction-split research handoff written

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araharah-executor
2026-10-25 23:59:21 +08:00
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@@ -294,6 +294,16 @@ Notes:
3. The budget record's c3 degradation class retires; KNOWN-LIMITATIONS updated
**Notes**: graph-layout v2 with landmark distances precomputed at build time; upload script unchanged.
### Phase 08.1: Contraction Hierarchies (Routing Backend v3) — the lever that closes SC-1: build-time node ordering + contraction + shortcut edges, simple uphill bidirectional query, optimality by construction (INSERTED)
**Goal:** [Urgent work - to be planned]
**Requirements**: TBD
**Depends on:** Phase 8
**Plans:** 5/5 plans complete
Plans:
- [ ] TBD (run /gsd-plan-phase 08.1 to break down)
### Phase 9: Routing Extras (Toll / Speed / Share / Voice)
**Goal**: The REQUIREMENTS extras go live on the engine-A stack.
**Depends on**: Phase 8.