Feature Flags (FlagPole)

New features should be gated behind a feature flag.

1. Register the flag in src/sentry/features/temporary.py:

   manager.add("organizations:my-feature", OrganizationFeature, FeatureHandlerStrategy.FLAGPOLE, api_expose=True)
   

   Use api_expose=True if the frontend needs to check the flag. Use ProjectFeature and a projects: prefix for project-scoped flags.

2. Python check:

   if features.has("organizations:my-feature", organization, actor=user):
   

3. Frontend check (requires api_expose=True):