Add race and station management

- races table: name, date, description, is_active
- stations table: ordered checkpoints with GPS per race
- New /api/races and /api/races/{id}/stations endpoints
- Upload now requires race + station selection; uses station GPS
  so images without GPS EXIF are accepted
- passages filtered by active race throughout
- RacePage: create races, manage stations (add/edit/delete checkpoints)
- Navbar shows active race name
- Start and finish stations created automatically per race

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/ingest.py

@@ -14,6 +14,7 @@ import logging
 import shutil
 import uuid
 from pathlib import Path
+from typing import Optional
 
 import aiosqlite
 from watchdog.events import FileSystemEventHandler, FileCreatedEvent
@@ -125,6 +126,69 @@ async def process_image(path: Path) -> None:
         )
 
 
+async def process_image_with_override(
+    path: Path,
+    *,
+    race_id: Optional[str],
+    station_name: str,
+    gps_lat: Optional[float],
+    gps_lon: Optional[float],
+    gps_alt: Optional[float],
+    db,
+) -> None:
+    """
+    Behandle bilde med manuelt oppgitt stasjon og GPS (fra web-opplasting).
+    EXIF-tid brukes hvis tilgjengelig, ellers nåværende tidspunkt.
+    """
+    from datetime import datetime, timezone
+    from profile_db import get_athlete_by_bib
+
+    logger.info("Web-opplasting: %s → stasjon=%s", path.name, station_name)
+
+    # Forsøk EXIF for tidsstempel, fallback til nå
+    try:
+        meta = parse_image(path)
+        timestamp = meta.timestamp_utc
+    except ExifError:
+        timestamp = datetime.now(timezone.utc)
+
+    ocr = read_bib(path)
+    dest = _destination_path(path, timestamp)
+    shutil.move(str(path), str(dest))
+
+    confidence = ocr.confidence
+    needs_review = ocr.digits is None or confidence < MIN_AUTO_CONFIDENCE
+    id_method = "bib_ocr" if not needs_review else "bib_ocr_uncertain"
+    review_note = None if not needs_review else (
+        "number_unreadable" if ocr.digits is None else "low_confidence"
+    )
+
+    profile_id = None
+    if ocr.digits and not needs_review:
+        athlete = await get_athlete_by_bib(db, ocr.digits)
+        if athlete:
+            profile_id = athlete["profile_id"]
+
+    await log_passage(
+        db,
+        race_id=race_id,
+        profile_id=profile_id,
+        bib_number=ocr.digits,
+        station=station_name,
+        timestamp_utc=timestamp,
+        gps_lat=gps_lat or 0.0,
+        gps_lon=gps_lon or 0.0,
+        gps_alt=gps_alt,
+        confidence=confidence,
+        proximity_score=ocr.proximity_score,
+        id_method=id_method,
+        source_image=str(dest),
+        needs_review=needs_review,
+        review_note=review_note,
+    )
+    logger.info("Passering logget: bib=%s station=%s", ocr.digits, station_name)
+
+
 async def process_existing() -> None:
     """Behandle bilder som allerede ligger i depot/ ved oppstart."""
     for path in sorted(DEPOT_DIR.glob("*")):