phase 14-15: docker build validation and helm deployment

infra/migrations/009_recommendation_persistence.sql

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+-- Stonks Oracle - Recommendation persistence enhancements
+-- Adds full model metadata columns to recommendations table
+-- and a risk_classification column for the computed risk label.
+-- Requirements: 7.1, 7.2, 8.3
+
+-- Store full model provenance on the recommendation itself
+ALTER TABLE recommendations
+    ADD COLUMN IF NOT EXISTS model_provider VARCHAR(100) DEFAULT 'deterministic',
+    ADD COLUMN IF NOT EXISTS prompt_version VARCHAR(100) DEFAULT '',
+    ADD COLUMN IF NOT EXISTS schema_version VARCHAR(50) DEFAULT '1.0.0',
+    ADD COLUMN IF NOT EXISTS risk_classification VARCHAR(20) DEFAULT 'moderate';
+
+-- Index for querying recommendations by risk classification
+CREATE INDEX IF NOT EXISTS idx_recommendations_risk
+    ON recommendations(risk_classification);