feat: add backup monitoring database schema

backend/src/media_library_viewer_api/services/settings_store.py

@@ -186,6 +186,50 @@ class SettingsStore:
             conn.execute(
                 "CREATE INDEX IF NOT EXISTS idx_monitoring_machine_actions_action_status ON monitoring_machine_actions(action, status)"
             )
+            conn.execute("""
+                CREATE TABLE IF NOT EXISTS backup_jobs (
+                    id TEXT PRIMARY KEY,
+                    name TEXT NOT NULL UNIQUE,
+                    source TEXT,
+                    target TEXT,
+                    schedule_interval_seconds INTEGER,
+                    created_at INTEGER NOT NULL
+                )
+            """)
+            conn.execute("""
+                CREATE TABLE IF NOT EXISTS backup_runs (
+                    id TEXT PRIMARY KEY,
+                    job_id TEXT NOT NULL,
+                    started_at INTEGER NOT NULL,
+                    ended_at INTEGER,
+                    status TEXT NOT NULL,
+                    bytes_transferred INTEGER,
+                    duration_ms INTEGER,
+                    error_message TEXT,
+                    details_json TEXT,
+                    created_at INTEGER NOT NULL,
+                    FOREIGN KEY (job_id) REFERENCES backup_jobs(id)
+                )
+            """)
+            conn.execute("CREATE INDEX IF NOT EXISTS idx_backup_runs_job_id ON backup_runs(job_id)")
+            conn.execute("CREATE INDEX IF NOT EXISTS idx_backup_runs_status ON backup_runs(status)")
+            conn.execute("""
+                CREATE TABLE IF NOT EXISTS backup_alerts (
+                    id TEXT PRIMARY KEY,
+                    job_id TEXT NOT NULL,
+                    run_id TEXT,
+                    alert_type TEXT NOT NULL,
+                    severity TEXT NOT NULL,
+                    message TEXT NOT NULL,
+                    acknowledged INTEGER NOT NULL DEFAULT 0,
+                    resolved_at INTEGER,
+                    created_at INTEGER NOT NULL,
+                    FOREIGN KEY (job_id) REFERENCES backup_jobs(id),
+                    FOREIGN KEY (run_id) REFERENCES backup_runs(id)
+                )
+            """)
+            conn.execute("CREATE INDEX IF NOT EXISTS idx_backup_alerts_job_id ON backup_alerts(job_id)")
+            conn.execute("CREATE INDEX IF NOT EXISTS idx_backup_alerts_acknowledged ON backup_alerts(acknowledged)")
 
     @staticmethod
     def _normalize_services(value: Any, fallback: list[str] | None = None) -> list[str]:

backend/tests/test_backups.py

@@ -0,0 +1,16 @@
+import tempfile
+from pathlib import Path
+from media_library_viewer_api.services.settings_store import SettingsStore
+
+
+def test_backup_schema_created():
+    with tempfile.TemporaryDirectory() as tmpdir:
+        db_path = Path(tmpdir) / "test_settings.sqlite"
+        store = SettingsStore(db_path)
+        store.init_schema()
+        with store.connect() as conn:
+            tables = conn.execute("SELECT name FROM sqlite_master WHERE type='table' AND name LIKE 'backup_%'").fetchall()
+            table_names = [t[0] for t in tables]
+            assert "backup_jobs" in table_names
+            assert "backup_runs" in table_names
+            assert "backup_alerts" in table_names