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backend/database/migrations/011_create_ai_insights.sql

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+-- Create AI Insights table for caching AI-generated insights
+CREATE TABLE IF NOT EXISTS ai_insights (
+    id SERIAL PRIMARY KEY,
+    cycle_id VARCHAR(255) NOT NULL,
+    kandang_id VARCHAR(255), -- NULL means "all kandangs"
+    insight_text TEXT NOT NULL,
+    version VARCHAR(50) NOT NULL DEFAULT 'v1',
+    generated_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    expires_at TIMESTAMP NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes for faster lookups
+CREATE INDEX IF NOT EXISTS idx_ai_insights_cycle_kandang ON ai_insights (cycle_id, kandang_id);
+CREATE INDEX IF NOT EXISTS idx_ai_insights_expires_at ON ai_insights (expires_at);
+
+-- Add comment to table
+COMMENT ON TABLE ai_insights IS 'Stores AI-generated insights with 6-hour TTL for cross-device caching';