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/app/runtime/event_loop/mod.rs

@@ -1,2 +0,0 @@
-#[expect(dead_code)]
-pub mod sessions;

src/app/runtime/event_loop/sessions/deferred.rs

@@ -1,16 +0,0 @@
-use crate::app::state::rest::AppStateRest;
-use crate::app::state::types::ToastKind;
-
-pub struct DeferredOp {
-    pub kind: String,
-    pub handler: Box<dyn FnOnce(&mut AppStateRest) + Send>,
-}
-
-pub fn run_deferred(state: &mut AppStateRest, op: DeferredOp) {
-    let kind = op.kind.clone();
-    (op.handler)(state);
-    state.push_toast(crate::app::state::types::Toast::new(
-        ToastKind::Info,
-        format!("deferred '{}' completed", kind),
-    ));
-}

src/app/runtime/event_loop/sessions/mod.rs

@@ -1,27 +0,0 @@
-use std::path::PathBuf;
-use crate::model::session::Session;
-
-#[expect(dead_code)]
-pub struct SessionManager {
-    pub current_id: String,
-    pub base_dir: PathBuf,
-    pub sessions: Vec<Session>,
-}
-
-impl SessionManager {
-    pub fn new(base_dir: PathBuf) -> Self {
-        SessionManager {
-            current_id: String::new(),
-            base_dir,
-            sessions: Vec::new(),
-        }
-    }
-
-    pub fn load_sessions(&mut self) {
-        self.sessions = Session::list(&self.base_dir);
-    }
-
-    pub fn find_by_id(&self, id: &str) -> Option<&Session> {
-        self.sessions.iter().find(|s| s.id == id)
-    }
-}