perf(platform): optimize dev server and UI improvements

[Israeltheminer]

Summary

• Add optimizeDeps.include to Vite config for heavy dependencies, reducing dev server module requests from 236 individual files to ~15 bundled chunks (massive dev performance improvement)
• Add title header to automations layout for consistency with other pages (knowledge, settings, conversations)
• Remove key prop from ConversationsClient that caused unnecessary full remounts on filter changes
• Improve ConversationsClientSkeleton to match actual two-panel layout

Test plan

• Start dev server and verify fast navigation between routes
• Check automations page has title header on desktop
• Verify conversations page doesn't remount when changing filters
• Check conversations skeleton loading state matches layout

🤖 Generated with Claude Code

Summary by CodeRabbit

• Improvements

  • Conversations loading state now displays a two-panel layout with better visual structure during data fetch
  • Dashboard automations page now includes a header and error handling

• Chores

  • Optimized build configuration dependencies

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request introduces structural and configuration changes across four files. The conversations client skeleton component is restructured to display a two-panel layout during loading with a sticky header, message list, and editor skeleton. The automations route is enhanced with a StickyHeader, AdaptiveHeader, and LayoutErrorBoundary composition wrapping an Outlet. A React key prop is removed from the ConversationsClient component in the status route. The Vite configuration is updated to explicitly include dependencies in the optimization pre-bundling step.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}