feat(tui): tambah command /todo dan /usage untuk buka overlay

Overlay Todo dan Usage sebelumnya tidak punya trigger sama sekali di
jalur interaksi normal (cuma bisa lewat restore snapshot sesi) --
sekarang mengikuti pola /workflow yang sudah ada.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/runtime/commands.rs

@@ -69,6 +69,12 @@ pub fn apply_command(command: Command) -> Vec<Action> {
         Command::WorkflowRun { script } => {
             vec![Action::RunWorkflow { script }]
         }
+        Command::TodoOpen => {
+            vec![Action::OpenOverlay(Overlay::Todo)]
+        }
+        Command::UsageOpen => {
+            vec![Action::OpenOverlay(Overlay::Usage)]
+        }
         Command::Unknown(cmd) => {
             vec![Action::SystemNote {
                 kind: "error".to_string(),

src/app/state/misc.rs

@@ -90,6 +90,8 @@ const COMMANDS: &[&str] = &[
     "/model add",
     "/workflow",
     "/workflow run",
+    "/todo",
+    "/usage",
     "/compact",
 ];
 

src/controller/command.rs

@@ -22,6 +22,8 @@ pub enum Command {
     WorkflowRun {
         script: String,
     },
+    TodoOpen,
+    UsageOpen,
     Unknown(String),
 }
 
@@ -75,6 +77,23 @@ pub fn parse_command(text: &str) -> Command {
         "/workflow" => Command::WorkflowRun {
             script: arg1.to_string(),
         },
+        "/todo" => Command::TodoOpen,
+        "/usage" => Command::UsageOpen,
         _ => Command::Unknown(cmd.to_string()),
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn parses_todo_open() {
+        assert_eq!(parse_command("/todo"), Command::TodoOpen);
+    }
+
+    #[test]
+    fn parses_usage_open() {
+        assert_eq!(parse_command("/usage"), Command::UsageOpen);
+    }
+}

src/resources.rs

@@ -36,6 +36,8 @@ Input:
   /workflow           Open workflow panel
   /workflow run <p>   Run a workflow with prompt <p>
   /mode workflow      Open workflow panel
+  /todo               Open task list
+  /usage              Open usage details
   /compact            Compact conversation history
   /exit               Exit application