6.9.0: Задачи-закупки

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

play-life-backend/migrations/000029_purchase_tasks.down.sql

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+ALTER TABLE tasks DROP COLUMN IF EXISTS purchase_config_id;
+DROP TABLE IF EXISTS purchase_config_boards;
+DROP TABLE IF EXISTS purchase_configs;

play-life-backend/migrations/000029_purchase_tasks.up.sql

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+-- Purchase task configurations
+CREATE TABLE purchase_configs (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX idx_purchase_configs_user_id ON purchase_configs(user_id);
+
+-- Purchase config board/group associations
+CREATE TABLE purchase_config_boards (
+    id SERIAL PRIMARY KEY,
+    purchase_config_id INTEGER NOT NULL REFERENCES purchase_configs(id) ON DELETE CASCADE,
+    board_id INTEGER NOT NULL REFERENCES shopping_boards(id) ON DELETE CASCADE,
+    group_name VARCHAR(255),
+    UNIQUE (purchase_config_id, board_id, group_name)
+);
+
+CREATE INDEX idx_purchase_config_boards_config_id ON purchase_config_boards(purchase_config_id);
+CREATE INDEX idx_purchase_config_boards_board_id ON purchase_config_boards(board_id);
+
+-- Add purchase_config_id to tasks
+ALTER TABLE tasks ADD COLUMN purchase_config_id INTEGER REFERENCES purchase_configs(id) ON DELETE SET NULL;
+CREATE INDEX idx_tasks_purchase_config_id ON tasks(purchase_config_id);