Use firstOrFail() for team-scoped project and environment lookups across
new-project Livewire flows so missing or cross-team UUIDs fail closed.
Also dispatch an error when boarding selects a non-owned project, and
update IDOR feature tests for the new error/exception behavior.
Ensure Server and Project lookups in Livewire components and API
controllers use team-scoped queries (ownedByCurrentTeam / whereTeamId)
instead of unscoped find/where calls. This enforces consistent
multi-tenant isolation across all user-facing code paths.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>