fix(cli): pass custom Chrome args to local launches

[luochen211]

Summary

• pass custom Chromium args through local isolated browse launches
• read optional args from BROWSE_CHROME_ARGS in the browse daemon
• cover isolated and auto-fallback launch strategies with regression tests

Fixes #2148

Tests

• pnpm --dir packages/cli test tests/local-strategy.test.ts
• pnpm exec prettier --check packages/cli/src/local-strategy.ts packages/cli/tests/local-strategy.test.ts packages/cli/src/index.ts
• pnpm --dir packages/cli run eslint
• pnpm --dir packages/cli run typecheck
• git diff --check

---

Summary by cubic

Allow passing custom Chrome/Chromium flags to managed local browse sessions. The CLI reads BROWSE_CHROME_ARGS and forwards them to localBrowserLaunchOptions for managed-local launches; tests verify the args are passed through.

• New Features
  • Parse BROWSE_CHROME_ARGS as JSON array or space-separated string.
  • Forward parsed args via DriverSessionManager using localBrowserLaunchOptions.args for managed-local only.
  • No args are sent if the env var is unset or empty.

^{Written for commit a3aef27. Summary will update on new commits.}

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