-- ============================================================================
-- 0005_water_admin_pin_hash.sql
--
-- The Drizzle schema (db/schema/water-log.ts) declares
-- `water_admin_settings.pin_hash TEXT` for storing the hashed admin PIN.
-- The original table was created in 0090_water_log_completion.sql without
-- that column, so every Drizzle `select()` / `insert()` against the table
-- throws `column "pin_hash" does not exist`, which the water-admin auth
-- route surfaces as 500 "Server error" and the settings page can't load
-- (the action's promise rejects inside withBrand, leaving the page stuck
-- on "Loading…").
--
-- The 0004 migration that previously created this table was a no-op
-- against prod (the table already existed from 0090) and so didn't add
-- the column either. This migration fixes that.
-- ============================================================================

ALTER TABLE water_admin_settings
  ADD COLUMN IF NOT EXISTS pin_hash TEXT;