refactor(ui): improve message visibility filtering and optimize bundle

- Refactor message filtering logic across AgentExecution, ClaudeCodeSession, SessionOutputViewer, and StreamMessage components to better handle visibility of user messages with tool results
- Replace inefficient every() loop with for-loop for better performance when checking message content visibility
- Add renderedSomething tracking in StreamMessage to prevent rendering empty components
- Optimize SessionOutputViewer with useMemo for displayableMessages filtering
- Remove unused GitHub API response fields (url, html_url, git_url) in Rust agents command
- Add Vite build configuration with manual code splitting for better bundle optimization
- Remove TypeScript expect-error comment for process global variable

These changes improve UI performance by reducing unnecessary re-renders and bundle size through better code splitting.

src-tauri/src/commands/agents.rs

@@ -1952,9 +1952,6 @@ struct GitHubApiResponse {
     path: String,
     sha: String,
     size: i64,
-    url: String,
-    html_url: String,
-    git_url: String,
     download_url: Option<String>,
     #[serde(rename = "type")]
     file_type: String,