Refactor verdict handling and editor state management

- Removed the Escalate variant from the Verdict enum and associated parsing logic.
- Cleaned up the EditorState struct by removing unused fields and methods.
- Simplified MCP connection functions by removing unnecessary disconnect and handle dismiss functions.
- Added tick count to MiscState for managing UI updates during processing.
- Updated chat and status views to display a spinner during AI processing using the tick count.
- Created a README.md file to document the project, its features, architecture, usage, key bindings, agent modes, security measures, installation instructions, and configuration details.

src/app/runtime/actions/mod.rs

@@ -275,6 +275,7 @@ pub fn apply_action(state: &mut AppStateRest, action: Action) {
             state.dirty = true;
         }
         Action::Tick => {
+            state.misc.tick_count = state.misc.tick_count.wrapping_add(1);
             let now_ms = chrono::Utc::now().timestamp_millis();
             state.misc.drain_expired_toasts(now_ms);
     crate::app::review::maybe_run_staleness_sweep(state);
@@ -693,12 +694,6 @@ fn run_agent_turn(
                         Err(e) => (e.to_string(), true, false),
                     },
                     Verdict::Block(reason) => (format!("Blocked: {}", reason), true, false),
-                    Verdict::Escalate => (
-                        "Tool requires approval. Provide explicit approval."
-                            .to_string(),
-                        true,
-                        false,
-                    ),
                 };
 
                 if is_edit {