fix: restore profile verification schema

migrations/008_profile_verification.sql

@@ -0,0 +1,17 @@
+ALTER TABLE employees
+ADD COLUMN IF NOT EXISTS profile_unavailable_streak INTEGER NOT NULL DEFAULT 0;
+
+ALTER TABLE employees
+ADD COLUMN IF NOT EXISTS last_profile_check_at TIMESTAMPTZ;
+
+CREATE TABLE IF NOT EXISTS employee_profile_urls (
+  id SERIAL PRIMARY KEY,
+  employee_id INTEGER NOT NULL REFERENCES employees(id) ON DELETE CASCADE,
+  url TEXT NOT NULL,
+  first_seen_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+  last_seen_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+  CONSTRAINT uq_employee_profile_urls_employee_url UNIQUE (employee_id, url)
+);
+
+CREATE INDEX IF NOT EXISTS ix_employee_profile_urls_employee_id
+  ON employee_profile_urls (employee_id);