feat: implement model management commands and overlays for enhanced user interaction

src/controller/command.rs

@@ -12,12 +12,21 @@ pub enum Command {
     LessonList,
     Mode(ModeKind),
     Clear,
+    ClearConfirm,
     Login { provider: String },
     Edit(String),
     McpAdd {
         name: String,
         command: String,
     },
+    ModelList,
+    ModelUse {
+        provider: String,
+    },
+    ModelAdd {
+        name: String,
+        base_url: String,
+    },
     Unknown(String),
 }
 
@@ -33,7 +42,9 @@ pub fn parse_command(text: &str) -> Command {
     match cmd {
         "/help" => Command::Help,
         "/quit" => Command::Quit,
+        "/clear" if arg1.is_empty() => Command::ClearConfirm,
         "/clear" => Command::Clear,
+        "/mode" if arg1.is_empty() => Command::Help, // open help to show available modes
         "/mode" => {
             let mode = match arg1 {
                 "chat" | "c" => ModeKind::Chat,
@@ -53,25 +64,36 @@ pub fn parse_command(text: &str) -> Command {
         "/lesson" if arg1 == "reject" && !arg2.is_empty() => Command::LessonReject(arg2.to_string()),
         "/lesson" if !arg1.is_empty() => Command::LessonCreate(arg1.to_string()),
         "/lesson" => Command::LessonList,
+        "/login" if arg1.is_empty() => Command::LessonList,
         "/login" if !arg1.is_empty() => Command::Login { provider: arg1.to_string() },
-        "/login" => Command::Login { provider: "zen".to_string() },
         "/edit" if !arg1.is_empty() => Command::Edit(arg1.to_string()),
         "/edit" => Command::Edit(".".to_string()),
+        "/mcp" if arg1.is_empty() => {
+            Command::Mode(ModeKind::Mcp)
+        }
         "/mcp" if arg1 == "add" && !arg2.is_empty() => {
-            // /mcp add <name> <command> [args...]
-            // name is the first word of arg2, the rest is the command
             let rest = arg2.trim();
             if let Some(space) = rest.find(' ') {
                 let name = rest[..space].to_string();
                 let command = rest[space + 1..].trim().to_string();
                 Command::McpAdd { name, command }
             } else {
-                Command::McpAdd {
-                    name: rest.to_string(),
-                    command: String::new(),
-                }
+                Command::McpAdd { name: rest.to_string(), command: String::new() }
             }
         }
+        "/model" if arg1 == "ls" || arg1 == "list" => Command::ModelList,
+        "/model" if arg1 == "add" && !arg2.is_empty() => {
+            let rest = arg2.trim();
+            if let Some(space) = rest.find(' ') {
+                let name = rest[..space].to_string();
+                let base_url = rest[space + 1..].trim().to_string();
+                Command::ModelAdd { name, base_url }
+            } else {
+                Command::ModelAdd { name: rest.to_string(), base_url: String::new() }
+            }
+        }
+        "/model" if arg1.is_empty() => Command::ModelList,
+        "/model" => Command::ModelUse { provider: arg1.to_string() },
         _ => Command::Unknown(cmd.to_string()),
     }
 }