Первоначальный коммит

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

play-life-backend/migrations_old/017_add_next_show_at.sql

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+-- Migration: Add next_show_at field to tasks table
+-- This script adds the next_show_at field for postponing tasks
+
+-- ============================================
+-- Add next_show_at column
+-- ============================================
+ALTER TABLE tasks 
+ADD COLUMN IF NOT EXISTS next_show_at TIMESTAMP WITH TIME ZONE;
+
+-- ============================================
+-- Comments for documentation
+-- ============================================
+COMMENT ON COLUMN tasks.next_show_at IS 'Date when task should be shown again (NULL means use last_completed_at + period)';
+