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/mode/mcp.rs

@@ -1,17 +1,6 @@
 use crate::app::state::rest::AppStateRest;
-use crate::app::state::types::Overlay;
 
 pub fn connect_mcp(state: &mut AppStateRest, server_name: &str) {
     let _ = server_name;
     state.dirty = true;
 }
-
-pub fn disconnect_mcp(state: &mut AppStateRest, server_name: &str) {
-    let _ = server_name;
-    state.dirty = true;
-}
-
-pub fn handle_mcp_dismiss(state: &mut AppStateRest) {
-    state.misc.overlay = Overlay::None;
-    state.dirty = true;
-}