-- Add timezone column to proxies table for geo-consistent fingerprinting
-- This allows matching Accept-Language and other headers to proxy location

ALTER TABLE proxies
ADD COLUMN IF NOT EXISTS timezone VARCHAR(50);

-- Add timezone to failed_proxies as well
ALTER TABLE failed_proxies
ADD COLUMN IF NOT EXISTS timezone VARCHAR(50);

-- Comment explaining usage
COMMENT ON COLUMN proxies.timezone IS 'IANA timezone (e.g., America/Phoenix) for geo-consistent fingerprinting';