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malice
5ba9527c02Auto now also considers "drive in to a trailhead, switch vehicles, continue
on foot/2w/4w" trips and picks one when it is meaningfully faster than the
single-mode winner. Implicit — no new chip; Auto just returns the fastest plan.
Backend:
- mvum_transitions.py: TrailheadIndex (STRtree over trail_entry_points), built
once per process via load_trailheads() (mirrors the MVUMSpatialIndex singleton).
query_trailheads_near_line(coords, buffer_m=2000) with a precise distance filter.
- router.py: _route_auto, after the single-mode probe and only when the winner is
ok AND total_distance_km >= MIN_HYBRID_DISTANCE_KM (8.0), tries hybrids. For each
candidate trailhead near the winning polyline (closest first, capped at 20) and
each (drive, offroad) pair in HYBRID_PAIRS, it routes both legs (annotate_mvum
off) and sums leg times with NO transition cost. A hybrid wins only if it beats
the single-mode winner by >= HYBRID_MIN_TIME_SAVINGS_MIN (15 min); trivial
offroad detours (< HYBRID_MIN_OFFROAD_KM = 0.8 km) are skipped. The winner is
combined into a new "multi" scenario: leg1 features + a kind=transition marker
+ leg2 features; summary carries total_*, per-leg legs[], summed MVUM counts;
selected_mode="hybrid". Each leg is annotated separately.
- app.py / offroute_route.py: load + inject the trailhead index singleton.
Frontend (additive — no api.js signature change):
- DirectionsPanel: per-leg breakdown row for hybrid/multi ("Drive X mi (Ymin)
-> 4W X mi (Zmin) - total Wmin", lucide Repeat between legs); existing Auto
badge still shows.
- MapView: network polylines colored by network_mode (vehicle/auto blue, 4w
orange, 2w green, foot red); transition points rendered as a circle marker with
the lucide Repeat icon + "Switch to <mode>" tooltip; bounds fit skips Points.
Tests: test_mvum_transitions.py — index load, near-line close-only query, short
trip stays single-mode, big-savings hybrid wins, trivial-detour + below-threshold
+ no-trailheads all fall back. 7 new tests; full offroute suite 71 passed.
Note: the DB column is trail_entry_points.highway_class; surfaced as record
"road_class" per the spec.
Co-authored-by: Matt <mj@k7zvx.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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