all these changes

database/migrations/V22__add_email_tokens_and_notification_log.sql

@@ -0,0 +1,42 @@
+-- Email delivery support for invites, password resets, and notification deduplication.
+
+CREATE TABLE IF NOT EXISTS password_reset_tokens (
+  id SERIAL PRIMARY KEY,
+  user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+  token_hash VARCHAR(64) NOT NULL UNIQUE,
+  expires_at TIMESTAMP NOT NULL,
+  used_at TIMESTAMP,
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_password_reset_tokens_user
+  ON password_reset_tokens(user_id, expires_at DESC);
+
+CREATE TABLE IF NOT EXISTS user_invitations (
+  id SERIAL PRIMARY KEY,
+  email VARCHAR(255) NOT NULL,
+  first_name VARCHAR(100),
+  last_name VARCHAR(100),
+  role VARCHAR(50) NOT NULL DEFAULT 'user',
+  invited_by_user_id INTEGER REFERENCES users(id) ON DELETE SET NULL,
+  token_hash VARCHAR(64) NOT NULL UNIQUE,
+  expires_at TIMESTAMP NOT NULL,
+  accepted_at TIMESTAMP,
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_user_invitations_email
+  ON user_invitations(email, expires_at DESC);
+
+CREATE TABLE IF NOT EXISTS notification_dispatch_log (
+  id SERIAL PRIMARY KEY,
+  user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+  notification_type VARCHAR(100) NOT NULL,
+  dedupe_key VARCHAR(255) NOT NULL UNIQUE,
+  metadata JSONB DEFAULT '{}'::jsonb,
+  sent_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_notification_dispatch_log_user_type
+  ON notification_dispatch_log(user_id, notification_type, sent_at DESC);