Первоначальный коммит

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

play-life-backend/migrations/000013_add_user_tracking.up.sql

@@ -0,0 +1,24 @@
+-- Таблица отслеживания между пользователями
+CREATE TABLE user_tracking (
+    id SERIAL PRIMARY KEY,
+    tracker_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    tracked_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT unique_tracking_pair UNIQUE (tracker_id, tracked_id),
+    CONSTRAINT no_self_tracking CHECK (tracker_id != tracked_id)
+);
+
+CREATE INDEX idx_user_tracking_tracker ON user_tracking(tracker_id);
+CREATE INDEX idx_user_tracking_tracked ON user_tracking(tracked_id);
+
+-- Таблица токенов приглашений (живут 1 час)
+CREATE TABLE tracking_invite_tokens (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    token VARCHAR(64) NOT NULL UNIQUE,
+    expires_at TIMESTAMP WITH TIME ZONE NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX idx_tracking_invite_tokens_token ON tracking_invite_tokens(token);
+CREATE INDEX idx_tracking_invite_tokens_user ON tracking_invite_tokens(user_id);