The route-surface-breakdown change is fully implemented (18/18 tasks,
all artifacts done). Archive it via `openspec archive` (CLI 1.6.0):
- Moves the change to openspec/changes/archive/2026-07-13-route-surface-breakdown/
- Promotes its 5 delta requirements into a new capability spec at
openspec/specs/route-surface-breakdown/spec.md (surface/waytype
breakdown from BRouter waytags, async Overpass backfill, live SSE
update, proportion bars, localized labels)
Purpose paragraph filled in (the CLI leaves a TBD placeholder). Both the
spec and archived change pass `openspec validate --strict`.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
