migrating more stuff into domain pkg

apps/auth/migrations/0001_accounts.sql

@@ -1,5 +1,5 @@
 -- Accounts stored as a JSON blob with generated (virtual) columns for querying.
--- Generated from src/accounts-db.ts (SCHEMA_DDL) — keep in sync.
+-- Generated from @repo/domain's accounts-db.ts (SCHEMA_DDL) — keep in sync.
 
 CREATE TABLE IF NOT EXISTS accounts (
   data TEXT NOT NULL,

apps/auth/migrations/0002_avatar.sql

@@ -1,5 +1,5 @@
 -- Store the player's avatar (set via the econ worker's /api/avatar/v2/set). It's
 -- an opaque JSON payload that isn't queried, so a single nullable TEXT column on
--- the account row suffices. Kept in sync with SCHEMA_DDL in src/accounts-db.ts.
+-- the account row suffices. Kept in sync with SCHEMA_DDL in @repo/domain's accounts-db.ts.
 
 ALTER TABLE accounts ADD COLUMN avatar TEXT;