Fix GitHub integration settings

[thisisharsh7]

fixes #1036

[vercel]

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[greptile-apps]

Greptile Summary

This PR fixes GitHub integration settings by implementing proper logout from gh CLI and improving the login flow with a modal UI. The changes ensure that when users disconnect from GitHub in settings, both the keychain token and the gh CLI authentication are cleared. It also adds a device flow modal to provide better UX during GitHub authentication, and implements an event-based system to sync authentication state across multiple component instances.

Key changes:

• Fixed github:logout IPC handler to return proper success/error responses
• Updated GitHubService.logout() to clear both keychain and gh CLI auth in parallel
• Added GithubDeviceFlowModal integration with polling to refresh status after authentication
• Implemented github-auth-changed window event to synchronize auth state across hook instances
• Added checkStatus() call after logout to immediately refresh UI state

Confidence Score: 3/5

• This PR is mostly safe to merge but contains a Windows compatibility issue that will cause logout failures on that platform
• The PR successfully fixes the GitHub settings integration and improves UX, but the hardcoded /bin/bash shell path in the logout function will break on Windows systems (which this Electron app supports per CLAUDE.md). The rest of the changes are sound - proper IPC responses, event-based state sync, and modal integration.
• Pay close attention to src/main/services/GitHubService.ts - the logout function uses a hardcoded Unix shell path that won't work on Windows

Important Files Changed

Filename	Overview
src/main/services/GitHubService.ts	Updated logout to clear both gh CLI auth and keychain token; uses hardcoded /bin/bash shell which may fail on Windows
src/renderer/components/IntegrationsCard.tsx	Added GitHub modal display and status polling after login/logout; includes 3-second polling with 15 attempts after successful auth

_{Last reviewed commit: 925c086}

[greptile-apps]

_{4 files reviewed, 1 comment}

_{Edit Code Review Agent Settings | Greptile}

[greptile-apps]

hardcoded /bin/bash will fail on Windows

Suggested change

	execAsync('echo "" | gh auth logout --hostname github.com', { shell: '/bin/bash' }).catch(
	execAsync('echo "" | gh auth logout --hostname github.com').catch(