Bike profiles:
- bikes table: name, weight, wheel, chainring/cog teeth, surface type
- CRUD in settings screen, active bike indicator
- Default bike: 12kg, 26", 42/18, mixed surface
- bike_id linked to gps_sessions
Physics-based kcal (replaces MET*0.97):
- Per-segment power calculation: gravity + rolling (Crr) + aero (CdA)
- Power > 0 = pedaling: mechanical energy / 25% efficiency = metabolic cost
- Power <= 0 = coasting: basal metabolic rate only
- Walk/run: proper MET table from Compendium of Physical Activities
- Raw altitude for gradient (smoothed was killing real slopes, 460 vs 296 kcal)
- Smoothed altitude kept for displayed elevGain/Loss only
Session recalculation:
- "Recalculate" button on session detail page
- Uses current weight + bike settings, re-reads all points
- Bike selector per session (change bike -> auto recalculate)
Other fixes:
- User weight fallback chain: weight_log -> profile -> 80kg
- Theoretical cadence from gear ratio + wheel circumference
- Crash recovery preserves bike data
4aiman
4740bdbe11