v0.2 - 19 features: comparator, allergies, gamification, shopping list, achievements, stats, profile, share, bottom nav

migrate.sql

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+-- Migration: Add new columns and tables for Aletheia v0.2
+-- Safe: uses IF NOT EXISTS / ADD COLUMN IF NOT EXISTS (PostgreSQL 11+)
+
+-- User profile fields
+ALTER TABLE users ADD COLUMN IF NOT EXISTS allergies TEXT DEFAULT '[]';
+ALTER TABLE users ADD COLUMN IF NOT EXISTS health_profile VARCHAR DEFAULT 'normal';
+
+-- Achievements table
+CREATE TABLE IF NOT EXISTS achievements (
+    id SERIAL PRIMARY KEY,
+    code VARCHAR UNIQUE NOT NULL,
+    name VARCHAR NOT NULL,
+    description VARCHAR NOT NULL,
+    emoji VARCHAR DEFAULT '🏆',
+    target INTEGER DEFAULT 1
+);
+
+-- User achievements
+CREATE TABLE IF NOT EXISTS user_achievements (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER REFERENCES users(id) NOT NULL,
+    achievement_id INTEGER REFERENCES achievements(id) NOT NULL,
+    unlocked_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Shopping list
+CREATE TABLE IF NOT EXISTS shopping_list (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER REFERENCES users(id) NOT NULL,
+    product_name VARCHAR NOT NULL,
+    barcode VARCHAR,
+    checked BOOLEAN DEFAULT FALSE,
+    added_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Indexes
+CREATE INDEX IF NOT EXISTS idx_user_achievements_user ON user_achievements(user_id);
+CREATE INDEX IF NOT EXISTS idx_shopping_list_user ON shopping_list(user_id);
+CREATE INDEX IF NOT EXISTS idx_scans_user_date ON scans(user_id, scanned_at);