[Spec Kit] Implementation progress

Implements all 88 tasks for the Reaction Image Board (specs/001-reaction-image-board):

- docker-compose.yml: postgres, minio, minio-init, api, ui services with healthchecks
- api/: FastAPI app with SQLAlchemy 2.x async, Alembic migrations, S3/MinIO storage,
  full integration + unit test suite (pytest + pytest-asyncio)
- ui/: Angular 19 standalone app (Library, Upload, Detail, NotFound components)
- .env.example: all required environment variables
- .gitignore: Python, Node, Docker, IDE, .env patterns

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

api/tests/integration/test_search.py

@@ -0,0 +1,60 @@
+"""
+T041 — GET /api/v1/images?tags=cat,funny → only images with both tags
+T042 — same query excludes images with only one matching tag
+"""
+import io
+import pytest
+
+
+def _minimal_gif() -> bytes:
+    return (
+        b"GIF89a\x01\x00\x01\x00\x80\x00\x00\xff\xff\xff\x00\x00\x00"
+        b"!\xf9\x04\x00\x00\x00\x00\x00,\x00\x00\x00\x00\x01\x00\x01"
+        b"\x00\x00\x02\x02D\x01\x00;"
+    )
+
+
+@pytest.mark.asyncio
+async def test_and_filter_returns_only_matching_images(client):
+    data = _minimal_gif()
+
+    # Image with both tags
+    r_both = await client.post(
+        "/api/v1/images",
+        files={"file": ("both.gif", io.BytesIO(data), "image/gif")},
+        data={"tags": "andcat,andfunny"},
+    )
+    both_id = r_both.json()["id"]
+
+    # Image with only one of the two tags — use different content to avoid dedup
+    r_one = await client.post(
+        "/api/v1/images",
+        files={"file": ("one.gif", io.BytesIO(data + b"\x00"), "image/gif")},
+        data={"tags": "andcat"},
+    )
+
+    response = await client.get("/api/v1/images?tags=andcat,andfunny")
+    assert response.status_code == 200
+    body = response.json()
+    ids = [item["id"] for item in body["items"]]
+    assert both_id in ids
+    assert r_one.json()["id"] not in ids
+
+
+@pytest.mark.asyncio
+async def test_filter_excludes_partial_tag_match(client):
+    data = _minimal_gif()
+
+    # Image with only "exclcat"
+    r_partial = await client.post(
+        "/api/v1/images",
+        files={"file": ("partial.gif", io.BytesIO(data + b"\x01"), "image/gif")},
+        data={"tags": "exclcat"},
+    )
+
+    # Filter requires both exclcat and exclother
+    response = await client.get("/api/v1/images?tags=exclcat,exclother")
+    assert response.status_code == 200
+    body = response.json()
+    ids = [item["id"] for item in body["items"]]
+    assert r_partial.json()["id"] not in ids