Первоначальный коммит

Co-authored-by: Cursor <cursoragent@cursor.com>

play-life-backend/migrations/000014_add_group_name.down.sql

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+-- Migration: Remove group_name field from wishlist_items and tasks tables
+-- Date: 2026-02-XX
+--
+-- This migration reverses the changes made in 000014_add_group_name.up.sql
+
+-- Step 1: Drop materialized view
+DROP MATERIALIZED VIEW IF EXISTS user_group_suggestions_mv;
+
+-- Step 2: Drop indexes on group_name
+DROP INDEX IF EXISTS idx_tasks_group_name;
+DROP INDEX IF EXISTS idx_wishlist_items_group_name;
+
+-- Step 3: Remove group_name from tasks
+ALTER TABLE tasks 
+DROP COLUMN group_name;
+
+-- Step 4: Add back project_id to wishlist_items
+ALTER TABLE wishlist_items 
+ADD COLUMN project_id INTEGER REFERENCES projects(id) ON DELETE SET NULL;
+
+-- Step 5: Try to restore project_id from group_name (if possible)
+-- Note: This is best-effort, as group_name might not match project names exactly
+UPDATE wishlist_items wi
+SET project_id = p.id
+FROM projects p
+WHERE wi.group_name = p.name 
+  AND wi.group_name IS NOT NULL 
+  AND wi.group_name != ''
+  AND p.deleted = FALSE;
+
+-- Step 6: Create index on project_id
+CREATE INDEX idx_wishlist_items_project_id ON wishlist_items(project_id);
+
+-- Step 7: Remove group_name from wishlist_items
+ALTER TABLE wishlist_items 
+DROP COLUMN group_name;