feat: apply lobster palette to prompts

docs/cli/index.md

@@ -36,6 +36,8 @@ Clawdbot uses a lobster palette for CLI output.
 - `error` (#E23D2D): errors, failures.
 - `muted` (#8B7F77): de-emphasis, metadata.
 
+Palette source of truth: `src/terminal/palette.ts` (aka “lobster seam”).
+
 ## Command tree
 
 ```