feat(doctor): offer update first

src/cli/update-cli.ts

@@ -141,7 +141,7 @@ export async function updateCommand(opts: UpdateCommandOptions): Promise<void> {
       );
       defaultRuntime.log(
         theme.muted(
-          "Examples: `npm i -g clawdbot@latest` or `pnpm add -g clawdbot@latest`",
+          "Examples: `npm i -g clawdbot@latest`, `pnpm add -g clawdbot@latest`, or `bun add -g clawdbot@latest`",
         ),
       );
     }
@@ -206,7 +206,7 @@ Examples:
 
 Notes:
   - For git installs: fetches, rebases, installs deps, builds, and runs doctor
-  - For npm installs: use npm/pnpm to reinstall (see docs/install/updating.md)
+  - For global installs: use npm/pnpm/bun to reinstall (see docs/install/updating.md)
   - Skips update if the working directory has uncommitted changes
 
 ${theme.muted("Docs:")} ${formatDocsLink("/updating", "docs.clawd.bot/updating")}`,