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

.planning/phases/08-alt-landmark-preprocessing-routing-backend-v2/08-04-SUMMARY.md

@@ -133,6 +133,14 @@ None - no external service configuration required. (The pending rebuild needs on
 *Phase: 08-alt-landmark-preprocessing-routing-backend-v2*
 *Completed: 2026-10-25 (task 1; task 2 pending Overpass availability)*
 
+### Orchestrator addendum — task 2 COMPLETED (2026-10-25, same day)
+
+The maintainer-time rebuild succeeded once Overpass recovered (HTTP 502 was transient):
+- `node routing/scripts/build-road-graph.mjs` → wrote `routing/data/kl-roadgraph.v1.bin` ARG2: 43.2 MB (45,341,620 B), 311,361 nodes / 677,126 edges / 21,469 names, maxSpeed 110
+- Landmark facts: L = 24 (D-02 rule, round(311361/13000) = 24), quantum 0.1 s, coverage min/mean 0.980/0.980 (gate ≥ 0.9), table bytes 28.5 MB, sentinels 150,986 to / 1,365,034 from
+- `--check routing/data/kl-roadgraph.v1.bin` → exit 0, facts decoded from the binary
+- The 08-05 BLOCKED note above is superseded: the ARG2 binary exists on the main tree — the campaign can run directly. R2 re-upload (`node routing/scripts/upload-road-graph.mjs`) remains a deploy-time user action, not an execution blocker.
+
 ## Self-Check: PASSED
 
 - `routing/scripts/build-road-graph.mjs` exists with the stage (grep-verified counts above) — FOUND