Auto-create athlete in startlist for unrecognized bib numbers

When a bib number is detected (via OCR or manual entry during review)
but not found in the start list, it is now automatically added with
the placeholder name "Ukjent #<nr>" instead of being left without a
profile_id (which would exclude it from results).

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

backend/ingest.py

@@ -23,7 +23,7 @@ from watchdog.observers import Observer
 from exif_parser import ExifError, parse_image
 from ocr import read_bib
 from passage_log import log_passage
-from profile_db import get_athlete_by_bib, init_db
+from profile_db import get_or_create_athlete, init_db
 
 logger = logging.getLogger(__name__)
 
@@ -98,11 +98,7 @@ async def process_image(path: Path) -> None:
         await init_db(db)
 
         if bib_number and not needs_review:
-            athlete = await get_athlete_by_bib(db, bib_number)
-            if athlete:
-                profile_id = athlete["profile_id"]
-            else:
-                logger.debug("Ukjent startnummer: %s", bib_number)
+            profile_id = await get_or_create_athlete(db, bib_number)
 
         await log_passage(
             db,
@@ -141,7 +137,7 @@ async def process_image_with_override(
     EXIF-tid brukes hvis tilgjengelig, ellers nåværende tidspunkt.
     """
     from datetime import datetime, timezone
-    from profile_db import get_athlete_by_bib
+    from profile_db import get_or_create_athlete as _get_or_create
 
     logger.info("Web-opplasting: %s → stasjon=%s", path.name, station_name)
 
@@ -165,9 +161,7 @@ async def process_image_with_override(
 
     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"]
+        profile_id = await _get_or_create(db, ocr.digits)
 
     await log_passage(
         db,