chore(deps): drop @chat-adapter/telegram from trunk

Trunk ships no channel adapters — /add-telegram installs the package on demand from the channels branch. This dependency was stale and pulled ~2 transitive packages into every fresh install.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -24,7 +24,6 @@
     "test:watch": "vitest"
   },
   "dependencies": {
-    "@chat-adapter/telegram": "4.26.0",
     "@clack/prompts": "^1.2.0",
     "@onecli-sh/sdk": "^0.3.1",
     "better-sqlite3": "11.10.0",