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+# Project agent rules
+
+## Google Cloud and Firebase browser access
+
+- Work with Google Cloud Console and Firebase Console only in the user's already authenticated Chrome instance on the development port `9222`.
+- Do not open Google or Firebase in another browser, a new Chrome profile, or a standalone Playwright browser session.
+- Do not close the user's Chrome windows, tabs, or browser processes unless the user explicitly asks.
+- Use the existing authenticated dev-port tab/session and preserve it between tasks.