fix: set Args for all cobra commands

AGENTS.md

@@ -204,19 +204,30 @@ Skills are reusable capabilities that can be discovered and executed by AI agent
 1. Create `pkg/cmd/<command>.go` with a `New<Command>Cmd()` function that returns `*cobra.Command`
 2. In the `New<Command>Cmd()` function:
    - Create and configure the `cobra.Command`
+   - **IMPORTANT**: Always define the `Args` field to specify argument validation
    - Set up any flags or subcommands
    - Return the configured command
 3. Register the command in `pkg/cmd/root.go` by adding `rootCmd.AddCommand(New<Command>Cmd())` in the `NewRootCmd()` function
 4. Create corresponding test file `pkg/cmd/<command>_test.go`
 5. In tests, create command instances using `NewRootCmd()` or `New<Command>Cmd()` as needed
 
+**Command Argument Validation:**
+
+All commands **MUST** declare the `Args` field to specify argument validation behavior. Common options:
+- `cobra.NoArgs` - Command accepts no arguments (most common for parent commands and no-arg commands)
+- `cobra.ExactArgs(n)` - Command requires exactly n arguments
+- `cobra.MinimumNArgs(n)` - Command requires at least n arguments
+- `cobra.MaximumNArgs(n)` - Command accepts up to n arguments
+- `cobra.RangeArgs(min, max)` - Command accepts between min and max arguments
+
 Example:
 ```go
 // pkg/cmd/example.go
 func NewExampleCmd() *cobra.Command {
     return &cobra.Command{
         Use:   "example",
         Short: "An example command",
+        Args:  cobra.NoArgs,  // Always declare Args field
         Run: func(cmd *cobra.Command, args []string) {
             // Command logic here
         },

pkg/cmd/list.go

@@ -31,6 +31,7 @@ func NewListCmd() *cobra.Command {
 		Use:     "list",
 		Short:   workspaceListCmd.Short,
 		Long:    workspaceListCmd.Long,
+		Args:    workspaceListCmd.Args,
 		PreRunE: workspaceListCmd.PreRunE,
 		RunE:    workspaceListCmd.RunE,
 	}

pkg/cmd/root.go

@@ -41,6 +41,7 @@ func NewRootCmd() *cobra.Command {
 	rootCmd := &cobra.Command{
 		Use:   "kortex-cli",
 		Short: "Launch and manage AI agent workspaces with custom configurations",
+		Args:  cobra.NoArgs,
 	}
 
 	// Add subcommands

pkg/cmd/workspace.go

@@ -27,6 +27,7 @@ func NewWorkspaceCmd() *cobra.Command {
 		Use:   "workspace",
 		Short: "Manage workspaces",
 		Long:  "Manage workspaces registered with kortex-cli init",
+		Args:  cobra.NoArgs,
 	}
 
 	// Add subcommands

pkg/cmd/workspace_list.go

@@ -132,6 +132,7 @@ func NewWorkspaceListCmd() *cobra.Command {
 		Use:     "list",
 		Short:   "List all registered workspaces",
 		Long:    "List all workspaces registered with kortex-cli init",
+		Args:    cobra.NoArgs,
 		PreRunE: c.preRun,
 		RunE:    c.run,
 	}