Cache OAuth token in app-owned keychain entry to avoid repeated password prompts

removed old file

Update README with auto-update, desktop app fallback, and install instructions

Add zip files and .superset/ to gitignore

Add auto-update mechanism via GitHub releases

Fix ISO 8601 date parsing with fractional seconds

Fix desktop token decryption, bundle ID, and menu bar stability

Add Claude desktop app token fallback and fix focus ring

Handle null resets_at in API response

Update bundle identifier to com.itzbubschki.ClaudeUsageBar

Add app icon with Claude sparkle and progress ring

Fix code signing for sandbox and hardened runtime

Replace force-unwrapped URL with guard statement

Implement rate limit backoff with Retry-After support

Validate HTTP response status codes before parsing