v0.101.0: New /install-slack-app command, spinner redesign, and CLI stability fixes

New features

- /install-slack-app command - New /install-slack-app command to set up the Slack app integration for your workspace

Improvements

- CLI spinner redesign - Updated CLI spinner animation for a refreshed look
- Usage Limit warning - Warning banner now shown when setting a global Usage Limit (Factory App)
- Droid Computer source control warning - Warning displayed when creating a Droid Computer without source control configured (Factory App)
- Usage Limits clarity - Usage Limits now clearly display values in millions of Factory Standard Credits (Factory App)

Bug fixes

- File tool accuracy - File tools now use the actual filesystem state for more reliable results
- File edit previews - Fixed structured previews not displaying correctly for file edit results
- Duplicate spec sessions - Fixed duplicate sessions being created during spec handoff