- models/agentdecision.go: AgentDecision GORM model (context/decision as jsonb, reasoning as text)
- migrations/migrate.go: AutoMigrate AgentDecision then ALTER TABLE to add vector(1536) column and CREATE ivfflat index via raw SQL
- controllers/agentDecisionController.go: CreateAgentDecision, FindSimilarDecisions (cosine distance), UpdateDecisionOutcome
- routes/routes.go: three routes under /api/v1/internal (InternalKeyAuth applied at group level)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>