Preconfigure local DBGate connections

agent.md

@@ -106,6 +106,7 @@ There are three selectable data sources:
 - Stores scraper source configuration, manufacturer-to-source mapping, scrape runs, discovered products and assets.
 - Supplier/manufacturer website settings such as source URL, search templates, fallback mode, browser engine, headless mode, wait time, notes and enabled/priority flags belong in Local scrape DB, not in the product catalog database.
 - The Settings modal should expose an `Open DBGate` action beside `Local scrape DB`; it opens the local DBGate URL from `DBGATE_URL` / `databaseGate.url` for inspecting `catalog_scrape`.
+- Start DBGate only through `npm run dbgate`; the script reads `.env` and preconfigures `Local 9bplus DB` plus `Local scrape DB` as DBGate connections. Do not start raw `dbgate-serve` because it will not receive the project database profiles.
 - It must never be used as a fallback for catalog reads. When selected in the UI, existing catalog reads continue using Local 9bplus DB until dedicated scrape-storage endpoints are added.
 - The schema is versioned in `sql/local-scrape-db.sql` and can be created with `npm run db:create-scrape`.
 - Existing legacy mapping rows from `Local 9bplus DB` can be copied into Local scrape DB with `npm run db:migrate-mapping-to-scrape`.

package.json

@@ -10,7 +10,7 @@
     "catalog:dry-run": "tsx src/cli.ts catalog-maker --dry-run",
     "db:create-scrape": "tsx scripts/create-local-scrape-db.ts",
     "db:migrate-mapping-to-scrape": "tsx scripts/migrate-mapping-to-scrape-db.ts",
-    "dbgate": "dbgate-serve",
+    "dbgate": "tsx scripts/start-dbgate.ts",
     "test": "tsx --test test/*.test.ts",
     "test:ui": "playwright test",
     "test:e2e": "playwright test tests/ui/database.e2e.spec.ts",

scripts/start-dbgate.ts

@@ -0,0 +1,63 @@
+import { spawn } from "node:child_process";
+import fs from "node:fs";
+
+const envFile = ".env";
+const localEnv = fs.existsSync(envFile) ? readEnvFile(envFile) : {};
+
+const host = localEnv.DB_HOST || "127.0.0.1";
+const port = localEnv.DB_PORT || "3306";
+const user = localEnv.DB_USER || "root";
+const password = localEnv.DB_PASSWORD || "";
+const catalogDatabase = localEnv.DB_NAME || "9bplus";
+const scrapeDatabase = localEnv.SCRAPE_DB_NAME || "catalog_scrape";
+
+const dbgateEnv = {
+  ...process.env,
+  CONNECTIONS: "local9bplus,localscrape",
+
+  ENGINE_local9bplus: "mariadb@dbgate-plugin-mysql",
+  SERVER_local9bplus: host,
+  PORT_local9bplus: port,
+  USER_local9bplus: user,
+  PASSWORD_local9bplus: password,
+  DATABASE_local9bplus: catalogDatabase,
+  LABEL_local9bplus: "Local 9bplus DB",
+  READONLY_local9bplus: "1",
+
+  ENGINE_localscrape: "mariadb@dbgate-plugin-mysql",
+  SERVER_localscrape: host,
+  PORT_localscrape: port,
+  USER_localscrape: user,
+  PASSWORD_localscrape: password,
+  DATABASE_localscrape: scrapeDatabase,
+  LABEL_localscrape: "Local scrape DB",
+  READONLY_localscrape: "0",
+};
+
+const child = spawn("dbgate-serve", {
+  stdio: "inherit",
+  shell: true,
+  env: dbgateEnv,
+});
+
+child.on("exit", (code, signal) => {
+  if (signal) {
+    process.kill(process.pid, signal);
+    return;
+  }
+
+  process.exit(code ?? 0);
+});
+
+function readEnvFile(filePath: string): Record<string, string> {
+  return Object.fromEntries(
+    fs.readFileSync(filePath, "utf8")
+      .split(/\r?\n/)
+      .map((line) => line.trim())
+      .filter((line) => line && !line.startsWith("#") && line.includes("="))
+      .map((line) => {
+        const separator = line.indexOf("=");
+        return [line.slice(0, separator).trim(), line.slice(separator + 1).trim()];
+      }),
+  );
+}