Fix Gecko cookie profile detection for uppercase .Default directories

[bald-ai]

Summary

• match Gecko profile directory names case-insensitively when checking for *.default*
• apply this to both profile availability checks and cookies.sqlite detection
• add regression test for Zen profile directory names like abc.Default (release)

Why

Some Firefox/Zen installs use uppercase Default in profile directory names. Current matching only checked lowercase .default, which can skip valid cookie stores and block cookie import.

Validation

• pnpm check
• ./Scripts/compile_and_run.sh
• manual local verification: CodexBarCLI usage --provider cursor --source auto ... imported cookies successfully from Zen e6wtnxlb.Default (release)
• swift test --filter BrowserDetectionTests

Note

swift test (full suite) currently crashes in existing ProviderVersionDetector teardown path (NSConcreteTask terminationStatus: task still running) on current main; unrelated to this change.

[bald-ai]

Hi, the issue was that auto cookie were failing in Zen browser due to case sensitive .default vs .Default. Should be fixed now.

[ratulsarna]

Thanks @bald-ai !