-- Migration 018: Add display_name to ai_prompts for user-facing labels

ALTER TABLE ai_prompts ADD COLUMN IF NOT EXISTS display_name VARCHAR(100);

-- Migrate existing prompts from hardcoded SLUG_LABELS
UPDATE ai_prompts SET display_name = '🔍 Gesamtanalyse' WHERE slug = 'gesamt' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🫧 Körperkomposition' WHERE slug = 'koerper' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🍽️ Ernährung' WHERE slug = 'ernaehrung' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🏋️ Aktivität' WHERE slug = 'aktivitaet' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '❤️ Gesundheitsindikatoren' WHERE slug = 'gesundheit' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🎯 Zielfortschritt' WHERE slug = 'ziele' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🔬 Mehrstufige Gesamtanalyse' WHERE slug = 'pipeline' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🔬 Pipeline: Körper-Analyse (JSON)' WHERE slug = 'pipeline_body' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🔬 Pipeline: Ernährungs-Analyse (JSON)' WHERE slug = 'pipeline_nutrition' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🔬 Pipeline: Aktivitäts-Analyse (JSON)' WHERE slug = 'pipeline_activity' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🔬 Pipeline: Synthese' WHERE slug = 'pipeline_synthesis' AND display_name IS NULL;
UPDATE ai_prompts SET display_name = '🔬 Pipeline: Zielabgleich' WHERE slug = 'pipeline_goals' AND display_name IS NULL;

-- Fallback: use name as display_name if still NULL
UPDATE ai_prompts SET display_name = name WHERE display_name IS NULL;