feat: Enhance OAuth module and OpenRouter client functionality

- Updated OAuth module to include unused imports for better clarity.
- Refactored OpenRouterClient to improve chat functionality and added support for tools in chat requests.
- Modified internet tools (Download, Fetch, Search) to use a more flexible internet mode check.
- Introduced new Bash tools for managing background jobs (BashOutput, BashKill).
- Enhanced workflow tool to parse and execute workflow scripts with arguments.
- Updated status and workflow views to reflect new agent and findings counts.
- Added IPC protocol definitions for client requests and state payloads.

src/service/oauth/mod.rs

@@ -5,6 +5,9 @@ pub mod loopback;
 #[expect(dead_code)]
 pub mod manager;
 
+#[expect(unused_imports)]
 pub use manager::{OAuthManager, OAuthConfig};
+#[expect(unused_imports)]
 pub use pkce::CodeVerifier;
+#[expect(unused_imports)]
 pub use loopback::LoopbackServer;