chore: remove redundant commands /agent, /stream, /swap (#202)

Co-authored-by: Letta <noreply@letta.com>

src/cli/components/CommandPreview.tsx

@@ -4,7 +4,7 @@ import { commands } from "../commands/registry";
 import { colors } from "./colors";
 
 // Compute command list once at module level since it never changes
-// Filter out hidden commands (like /swap which is an alias for /resume)
+// Filter out hidden commands
 const commandList = Object.entries(commands)
   .filter(([, { hidden }]) => !hidden)
   .map(([cmd, { desc }]) => ({