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SQL

-- 0018_user_setup_tokens.sql
--
-- One outstanding setup token per user (PRIMARY KEY on user_id).
-- Regenerating a link is INSERT OR REPLACE — old token immediately
-- invalid. Token is stored as sha256(raw) hex, never the raw token,
-- so a DB leak doesn't leak active links.
CREATE TABLE user_setup_tokens (
user_id TEXT PRIMARY KEY REFERENCES users(id) ON DELETE CASCADE,
token_hash TEXT NOT NULL,
expires_at TEXT NOT NULL,
created_at TEXT NOT NULL,
created_by TEXT REFERENCES users(id) ON DELETE SET NULL
);
CREATE INDEX user_setup_tokens_expires ON user_setup_tokens(expires_at);