Auto-scroll chat and hide empty diffs tab

[BunsDev]

Summary

• Keep chat views anchored to the latest message using a bottom anchor fallback, which improves scroll-to-end reliability.
• Normalize diff/highlight language ids through a shared mapping so common VS Code and file-based aliases resolve correctly in Shiki.
• Hide the Diffs tab when a thread has no diff content and avoid forcing the right panel open when switching tabs programmatically.
• Update the Capacitor local notifications patch script for the Capacitor v8 Swift API.
• Add and adjust tests for language normalization, diff language inference, and right panel tab behavior.

Testing

• Not run (not requested).
• Added unit coverage for resolveFileDiffLanguage alias normalization.
• Updated right panel store coverage for inactive tab switching without opening the panel.
• Adjusted PR review utility coverage to expect normalized diff language ids.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
okcode-marketing	Ready	Preview	Apr 20, 2026 8:09am
v0-compute-the-platform-to-build	Error		Apr 20, 2026 8:09am