- Fix currentTeam() to return null instead of crashing when no session
- Fix role() to use $this->currentTeam() instead of global helper
- Add roleInTeam() method for explicit team context
- Remove unused otherTeams() method
- Fix InviteLink authorization bypass when role() returns null
- Fix confirmEmailChange() null safety for currentTeam()
- Fix ActivityMonitor to handle null currentTeam with fallback chain
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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