offroute: bidirectional wilderness routing (all 4 scenarios)

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Support all four routing scenarios:
  A: off-network → on-network (wilderness then Valhalla)
  B: off-network → off-network (wilderness, Valhalla, wilderness)
  C: on-network → off-network (Valhalla then wilderness)
  D: on-network → on-network (pure Valhalla passthrough)

Off-network detection via Valhalla /locate endpoint:
  - Snap distance > 500m = off-network

Key implementation details:
  - _locate_on_network() helper for network detection
  - route() dispatches to scenario-specific handlers
  - _pathfind_wilderness() extracted for reuse (runs MCP)
  - _valhalla_route() helper for network segments
  - _build_response() unifies GeoJSON output format

Memory management:
  - Sequential MCP runs for scenario B (not parallel)
  - gc.collect() after each MCP run
  - Bbox centered on wilderness origin, not distant destination

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

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Matt 2026-05-08 21:11:53 +00:00

parent ff0721c23e

commit 58347415bc

1 changed files with 693 additions and 150 deletions

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lib/offroute/router.py

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