Rename Hightower components to Trebuchet

- Rename npm packages: @shannon/api -> @trebuchet/api, @shannon/worker -> @trebuchet/worker, @keygraph/shannon -> @trebuchet/cli
- Update CLI references from shannon/keygraph to trebuchet/trebuchet
- Update Dockerfile and CLAUDE.md to reflect new package names
- Update TypeScript imports in API to use @trebuchet/worker

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/cli/src/commands/uninstall.ts

@@ -34,5 +34,5 @@ export async function uninstall(): Promise<void> {
 
   fs.rmSync(SHANNON_HOME, { recursive: true, force: true });
   p.log.success('All Shannon data has been removed.');
-  p.outro('Shannon has been uninstalled. Run `npx @keygraph/shannon setup` to start fresh.');
+  p.outro('Trebuchet has been uninstalled. Run `npx @trebuchet/cli setup` to start fresh.');
 }