Extract climb detection into a dedicated climb package

Move climb detection, slope, and Cotacol scoring out of ride into a new
climb package that operates on a geometry-only Route (distances, elevations,
coords). Ride embeds climb.Route and keeps its timing and telemetry columns.

- climb.Detect returns []DetectedClimb (Climb + ride-absolute Start).
- Climb owns its sliced geometry; indices are local, with Start reported at
  the detection boundary for absolute position.
- Detected bounds use core.Interval; freeRegions claim suppression fixed.
- ride no longer builds slices: ClimbFromDist/ClimbFromIndexes/climbFrom and
  ride.Climb/Interval/Range are removed; rideanalysis, mountain_pass MatchClimb,
  and web views are rewired to climb types.
- New internal/routetest builds climb.Route from the ride DSL; ridetest reuses
  it and adds timestamps and telemetry.
- Tests moved to climb (synthetic detection and difficulty) and kept in ride
  for GPX-example integration; ride.comparison detection coverage retained.
- mountain_pass.nearestCrossing now reuses geo.Nearest.

1 files changed, 0 insertions, 43 deletions

diff --git a/ride/ecs_test.go b/ride/ecs_test.go
deleted file mode 100644
index 01c0628..0000000
--- a/ride/ecs_test.go
+++ /dev/null
@@ -1,43 +0,0 @@
-package ride
-
-import (
-	"testing"
-	"time"
-
-	"github.com/jftuga/geodist"
-	"github.com/stretchr/testify/assert"
-)
-
-func TestRideExposesComponentGetters(t *testing.T) {
-	distances := []float64{0, 500, 1000}
-	elevations := []float64{0, 35, 70}
-	coords := []geodist.Coord{{Lat: 43.0, Lon: 5.0}, {Lat: 43.1, Lon: 5.1}, {Lat: 43.2, Lon: 5.2}}
-	timestamps := []time.Time{{}, time.Time{}.Add(time.Second), time.Time{}.Add(2 * time.Second)}
-
-	r := FromColumns(distances, elevations, coords, timestamps)
-
-	assert.Equal(t, distances, r.Distances())
-	assert.Equal(t, elevations, r.Elevations())
-	assert.Equal(t, coords, r.Coords())
-	assert.Equal(t, timestamps, r.Timestamps())
-
-	powers, ok := r.Powers()
-	assert.False(t, ok, "no power component present")
-	assert.Nil(t, powers)
-	cadences, ok := r.Cadences()
-	assert.False(t, ok, "no cadence component present")
-	assert.Nil(t, cadences)
-}
-
-func TestDifficultyScoreReadsOnlyDistanceAndElevationComponents(t *testing.T) {
-	// A 1 km climb at a steady 7%, sampled every 100 m.
-	distances := make([]float64, 0, 11)
-	elevations := make([]float64, 0, 11)
-	for i := 0; i <= 10; i++ {
-		distances = append(distances, float64(i*100))
-		elevations = append(elevations, float64(i*7))
-	}
-
-	// Reference Cotacol value: 10 segments of 100 m at 7% => 49 pts.
-	assert.InDelta(t, 49, difficultyScore(distances, elevations, 0, len(distances)-1), 0.5)
-}