Add pets web blueprint with API endpoints

Implements all /pets/* routes (register, status, sightings, wildlife,
unlabeled crops, label, upload, update, delete, train, training-status,
highlights), registers the blueprint in app.py, adds a placeholder
dashboard template, and covers the API with 11 passing unit tests.

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

tests/unit/test_pets_api.py

@@ -0,0 +1,109 @@
+"""Tests for pets web blueprint API endpoints."""
+
+import pytest
+from sqlalchemy import create_engine
+
+from vigilar.config import VigilarConfig
+from vigilar.storage.schema import metadata
+from vigilar.web.app import create_app
+
+
+@pytest.fixture
+def client(tmp_path):
+    """Flask test client wired to an in-memory test DB."""
+    db_path = tmp_path / "pets_test.db"
+    engine = create_engine(f"sqlite:///{db_path}", echo=False)
+    metadata.create_all(engine)
+
+    cfg = VigilarConfig()
+    app = create_app(cfg)
+    app.config["DB_ENGINE"] = engine
+    app.config["TESTING"] = True
+
+    with app.test_client() as c:
+        yield c
+
+
+class TestPetsAPI:
+    def test_register_pet(self, client):
+        resp = client.post("/pets/register", json={
+            "name": "Angel", "species": "cat", "breed": "DSH",
+            "color_description": "black",
+        })
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert data["name"] == "Angel"
+        assert "id" in data
+
+    def test_get_pet_status(self, client):
+        client.post("/pets/register", json={"name": "Angel", "species": "cat"})
+        resp = client.get("/pets/api/status")
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert len(data["pets"]) == 1
+        assert data["pets"][0]["name"] == "Angel"
+
+    def test_get_sightings_empty(self, client):
+        resp = client.get("/pets/api/sightings")
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert data["sightings"] == []
+
+    def test_get_wildlife_empty(self, client):
+        resp = client.get("/pets/api/wildlife")
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert data["sightings"] == []
+
+    def test_get_unlabeled_empty(self, client):
+        resp = client.get("/pets/api/unlabeled")
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert data["crops"] == []
+
+    def test_pets_dashboard_loads(self, client):
+        resp = client.get("/pets/")
+        assert resp.status_code == 200
+
+    def test_register_pet_missing_fields(self, client):
+        resp = client.post("/pets/register", json={"name": "Buddy"})
+        assert resp.status_code == 400
+
+    def test_label_crop(self, client):
+        # Register a pet first
+        reg = client.post("/pets/register", json={"name": "Angel", "species": "cat"})
+        pet_id = reg.get_json()["id"]
+
+        # Insert an unlabeled sighting directly via DB
+
+        from vigilar.storage.queries import insert_pet_sighting
+        app_engine = client.application.config["DB_ENGINE"]
+        sighting_id = insert_pet_sighting(app_engine, species="cat", camera_id="cam1",
+                                          confidence=0.9)
+
+        resp = client.post(f"/pets/{sighting_id}/label", json={"pet_id": pet_id})
+        assert resp.status_code == 200
+        assert resp.get_json()["ok"] is True
+
+    def test_delete_pet(self, client):
+        reg = client.post("/pets/register", json={"name": "Ghost", "species": "cat"})
+        pet_id = reg.get_json()["id"]
+
+        resp = client.delete(f"/pets/{pet_id}/delete")
+        assert resp.status_code == 200
+        assert resp.get_json()["ok"] is True
+
+        status = client.get("/pets/api/status").get_json()
+        assert len(status["pets"]) == 0
+
+    def test_training_status(self, client):
+        resp = client.get("/pets/api/training-status")
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert "status" in data
+
+    def test_highlights(self, client):
+        resp = client.get("/pets/api/highlights")
+        assert resp.status_code == 200
+        data = resp.get_json()
+        assert "highlights" in data