Fixes#4529
The moltbot compatibility package was broken because bin/moltbot.js
was missing. This file is referenced in package.json but was never
created during the openclaw rename.
This commit adds the missing binary that:
- Forwards all commands to openclaw
- Shows clear deprecation warning
- Guides users to migrate to openclaw package
Without this fix, users who upgraded from moltbot to openclaw by
git pull could not use the gateway because their global moltbot
installation had no working binary.
Test: node packages/moltbot/bin/moltbot.js --version
(requires built openclaw)
