- Add IsAIEnabled() method to AISettingsHandler for consistent checks
- Gate baseline learning, pattern detector, and correlation detector initialization
in StartPatrol() on AI being enabled
- Add AI enabled checks to all /api/ai/intelligence/* endpoints as defense-in-depth
- Return empty results with "AI is not enabled" message when AI is disabled
This ensures no AI-related data is collected, persisted, or returned when AI is disabled,
preventing the "undismissable alerts" issue where old AI findings would appear.
rcourtman
5c2db10780