refactor: remove agent mode and related functionality; update help and README

src/app/mode/agents/mod.rs

@@ -1,10 +0,0 @@
-use crate::app::state::rest::AppStateRest;
-
-pub fn get_agent_count(state: &AppStateRest) -> usize {
-    state.session_runtime.as_ref().map_or(0, |rt| rt.subagent_queue)
-}
-
-pub fn get_active_agents(state: &AppStateRest) -> Vec<String> {
-    let count = get_agent_count(state);
-    (0..count).map(|i| format!("agent-{}", i)).collect()
-}

src/app/mode/editor.rs

@@ -32,31 +32,12 @@ impl EditorState {
         }
     }
 
-    pub fn change_line(&mut self, text: String) {
-        self.save_undo();
-        if self.cursor_line < self.content.len() {
-            self.content[self.cursor_line] = text;
-        }
-    }
-
     pub fn insert_line_after(&mut self) {
         self.save_undo();
         let pos = (self.cursor_line + 1).min(self.content.len());
         self.content.insert(pos, String::new());
     }
 
-    pub fn delete_current_line(&mut self) {
-        if self.content.len() <= 1 {
-            return;
-        }
-        self.save_undo();
-        self.content.remove(self.cursor_line);
-        if self.cursor_line >= self.content.len() {
-            self.cursor_line = self.content.len() - 1;
-        }
-        self.cursor_col = 0;
-    }
-
     fn save_undo(&mut self) {
         self.undo_stack.push(self.content.clone());
         if self.undo_stack.len() > 50 {
@@ -64,23 +45,6 @@ impl EditorState {
         }
     }
 
-    pub fn undo(&mut self) {
-        if let Some(prev) = self.undo_stack.pop() {
-            self.content = prev;
-            self.cursor_line = self.cursor_line.min(self.content.len().saturating_sub(1));
-            self.cursor_col = 0;
-        }
-    }
-
-    pub fn cursor_up(&mut self) {
-        if self.cursor_line > 0 {
-            self.cursor_line -= 1;
-        }
-        self.cursor_col = self.cursor_col.min(
-            self.content.get(self.cursor_line).map(|l| l.len()).unwrap_or(0),
-        );
-    }
-
     pub fn cursor_down(&mut self) {
         if self.cursor_line + 1 < self.content.len() {
             self.cursor_line += 1;
@@ -90,26 +54,6 @@ impl EditorState {
         );
     }
 
-    pub fn cursor_left(&mut self) {
-        if self.cursor_col > 0 {
-            self.cursor_col -= 1;
-        } else if self.cursor_line > 0 {
-            self.cursor_line -= 1;
-            self.cursor_col = self.content.get(self.cursor_line).map(|l| l.len()).unwrap_or(0);
-        }
-    }
-
-    pub fn cursor_right(&mut self) {
-        if let Some(line) = self.content.get(self.cursor_line) {
-            if self.cursor_col < line.len() {
-                self.cursor_col += 1;
-            } else if self.cursor_line + 1 < self.content.len() {
-                self.cursor_line += 1;
-                self.cursor_col = 0;
-            }
-        }
-    }
-
     pub fn insert_char(&mut self, c: char) {
         self.save_undo();
         if let Some(line) = self.content.get_mut(self.cursor_line) {
@@ -134,15 +78,6 @@ impl EditorState {
         }
     }
 
-    pub fn join_lines(&mut self) {
-        if self.cursor_line + 1 >= self.content.len() {
-            return;
-        }
-        self.save_undo();
-        let next = self.content.remove(self.cursor_line + 1);
-        self.content[self.cursor_line].push_str(&next);
-    }
-
     pub fn as_string(&self) -> String {
         self.content.join("\n")
     }

src/app/mode/help.rs

@@ -20,7 +20,7 @@ Keybindings:
 Slash commands:
   /help             Show this help
   /quit             Quit session
-  /mode <name>      Switch mode (chat, agents, bash, workflow)
+  /mode <name>      Switch mode (chat, bash, workflow)
   /lesson <text>    Create a lesson
   /lesson list      List lessons
   /lesson export    Export lessons

src/app/mode/mod.rs

@@ -15,7 +15,6 @@ pub mod todo;
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
 pub enum ModeKind {
     Chat,
-    Agents,
     Bash,
     Workflow,
     Help,

src/app/runtime/actions/mod.rs

@@ -72,7 +72,6 @@ pub fn apply_action(state: &mut AppStateRest, action: Action) {
         Action::SwitchMode(mode) => {
             state.misc.overlay = match mode {
                 ModeKind::Chat
-                | ModeKind::Agents
                 | ModeKind::Bash
                 | ModeKind::Workflow => Overlay::None,
                 ModeKind::Help => Overlay::Help,

src/app/state/types.rs

@@ -38,7 +38,6 @@ pub enum Overlay {
     None,
     Help,
     Settings,
-    Agents,
     Bash,
     QuitConfirm,
     Workflow,

src/app/subagent/spawn.rs

@@ -22,23 +22,9 @@ impl AgentDefinition {
         }
     }
 
-    pub fn with_system_prompt(mut self, prompt: String) -> Self {
-        self.system_prompt = Some(prompt);
-        self
-    }
-
-    pub fn with_allowed_tools(mut self, tools: Vec<String>) -> Self {
-        self.allowed_tools = Some(tools);
-        self
-    }
-
     pub fn with_max_steps(mut self, steps: usize) -> Self {
         self.max_steps = Some(steps);
         self
     }
 
-    pub fn with_temperature(mut self, temp: f32) -> Self {
-        self.temperature = Some(temp);
-        self
-    }
 }