v5.0 Introduce centralized homepage & portrait photo management

tests/services/test_photo_service.py

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+from __future__ import annotations
+
+import pytest
+
+from transcription.config import Settings
+from transcription.db.models import Person
+from transcription.services.people import PeopleService
+from transcription.services.photos import PhotosService
+
+PNG_BYTES = bytes.fromhex(
+    "89504e470d0a1a0a0000000d49484452000000010000000108060000001f15c4890000000a49444154789c6360000002000100"
+    "05fe02fea7b1b8000000004945"
+) + b"NDAE\xae\x42\x60\x82"
+
+
+@pytest.mark.asyncio
+async def test_create_photo_persists_media_and_primary_state(default_session_factory, tmp_path):
+    settings = Settings(openrouter_api_key="test-key", upload_dir=tmp_path / "uploads")
+    people = PeopleService(session_factory=default_session_factory)
+    photos = PhotosService(session_factory=default_session_factory, settings=settings)
+    person = await people.create_person(Person(full_name="Photo Person"))
+
+    first = await photos.create_photo(person_id=person.id, filename="one.png", file_bytes=PNG_BYTES)
+    second = await photos.create_photo(person_id=person.id, filename="two.png", file_bytes=PNG_BYTES)
+    listed = await photos.list_photos(person_id=person.id)
+
+    assert first.path.startswith("photos/")
+    assert (settings.upload_dir / first.path).exists()
+    assert first.is_primary is True
+    assert second.is_primary is False
+    assert listed[0].is_primary is True
+
+
+@pytest.mark.asyncio
+async def test_set_primary_and_delete_promotes_next_photo(default_session_factory, tmp_path):
+    settings = Settings(openrouter_api_key="test-key", upload_dir=tmp_path / "uploads")
+    people = PeopleService(session_factory=default_session_factory)
+    photos = PhotosService(session_factory=default_session_factory, settings=settings)
+    person = await people.create_person(Person(full_name="Primary Person"))
+
+    first = await photos.create_photo(person_id=person.id, filename="one.png", file_bytes=PNG_BYTES)
+    second = await photos.create_photo(person_id=person.id, filename="two.png", file_bytes=PNG_BYTES)
+
+    await photos.set_primary(photo_id=second.id)
+    switched = await photos.list_photos(person_id=person.id)
+    assert switched[0].id == second.id
+    assert switched[0].is_primary is True
+
+    await photos.delete_photo(photo_id=second.id)
+    remaining = await photos.list_photos(person_id=person.id)
+    assert len(remaining) == 1
+    assert remaining[0].id == first.id
+    assert remaining[0].is_primary is True