Initial project scaffold: FastAPI backend + Svelte 5 frontend

Backend (uv): FastAPI app with routers (foods, log, targets, OFF proxy),
SQLAlchemy models, Pydantic schemas, migration runner + 0001 initial schema,
example pytest suite (7 tests).
Frontend (npm): Vite 7 + Svelte 5 runes, lib/ (api, stores, scanner, format)
per spec §7, placeholder components, example vitest suite (4 tests).
SPEC.md §1: registered uvicorn and Vitest (rule §8.3.3).

backend/tests/test_health.py

@@ -0,0 +1,24 @@
+"""Example API tests — scaffold for future suites (spec §8.4)."""
+
+
+def test_health(client):
+    resp = client.get("/api/health")
+    assert resp.status_code == 200
+    assert resp.json() == {"status": "ok"}
+
+
+def test_list_foods_empty(client):
+    resp = client.get("/api/foods")
+    assert resp.status_code == 200
+    assert resp.json() == []
+
+
+def test_get_log_empty(client):
+    resp = client.get("/api/log", params={"date": "2026-07-25"})
+    assert resp.status_code == 200
+    assert resp.json() == []
+
+
+def test_current_target_none(client):
+    resp = client.get("/api/targets/current")
+    assert resp.status_code == 404