feat(store): add PostgreSQL foundation [T-009]

Sense/internal/config/config_test.go

@@ -70,3 +70,26 @@ func TestLoadRTSPStripQueryOptIn(t *testing.T) {
 		t.Fatal("explicit RTSP query stripping was not loaded")
 	}
 }
+
+func TestValidateDatabaseDriver(t *testing.T) {
+	t.Parallel()
+	cfg := Config{
+		HTTPAddress:       "127.0.0.1:8080",
+		DatabaseDriver:    "postgres",
+		DatabaseDSN:       "file:test.db",
+		MediaMTXURL:       "http://127.0.0.1:9997",
+		ReconcileInterval: 1,
+		ProbeInterval:     1,
+	}
+	if err := cfg.Validate(); err == nil {
+		t.Fatal("postgres driver must reject the SQLite default DSN")
+	}
+	cfg.DatabaseDSN = "postgres://sense-runtime@127.0.0.1/yovision?sslmode=disable"
+	if err := cfg.Validate(); err != nil {
+		t.Fatalf("valid PostgreSQL selection failed: %v", err)
+	}
+	cfg.DatabaseDriver = "mysql"
+	if err := cfg.Validate(); err == nil {
+		t.Fatal("unknown database driver must be rejected")
+	}
+}