Add DBGate opener for scrape database

src/config.ts

@@ -42,6 +42,10 @@ export function loadConfig({ configPath = "config/local.json", dryRun } = {}) {
       scrapeName: env.SCRAPE_DB_NAME || config.database?.scrapeName || "catalog_scrape",
       connectionLimit: Number(env.DB_CONNECTION_LIMIT || config.database?.connectionLimit || 5),
     },
+    databaseGate: {
+      url: env.DBGATE_URL || config.databaseGate?.url || "http://127.0.0.1:3000",
+      browserEngine: String(env.DBGATE_BROWSER_ENGINE || config.databaseGate?.browserEngine || "chromium").toLowerCase(),
+    },
   };
 }
 
@@ -89,5 +93,9 @@ function mergeConfig(base, override) {
       ...base.database,
       ...override.database,
     },
+    databaseGate: {
+      ...base.databaseGate,
+      ...override.databaseGate,
+    },
   };
 }