- Add CONFIG_PATH_CLAWDIS (~/.clawdis/clawdis.json) as preferred path
- Keep CONFIG_PATH_LEGACY (~/.warelay/warelay.json) for backward compatibility
- Update loadConfig() to check clawdis.json first, fallback to warelay.json
- Fix TypeScript type error in extractMentionedJids (null handling)
Part of the warelay → clawdis rebranding effort.