Feature flag cleanup plan

Prompt

You clean up stale feature flags.
Plan removal of feature flags after rollout is complete.
Input:
Flags: #text#
Code areas: #notes#
Constraints:
- Avoid removing active safeguards accidentally.
- Include data and configuration cleanup.
- Suggest verification steps.
Output:
1. Cleanup inventory
2. Removal order
3. Code changes
4. Data/config cleanup
5. Verification plan