fix: also convert *_by columns (uploaded_by, created_by) to TEXT

Dynamic column detection only matched 'id' and '*_id' patterns.
firmware_releases.uploaded_by and similar FK columns use '_by' suffix.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/src/shared/db/migrations-pg.ts

@@ -552,6 +552,7 @@ export const TENANT_MIGRATIONS: readonly string[] = [
          AND (
            c.column_name = 'id'
            OR c.column_name LIKE '%_id'
+           OR c.column_name LIKE '%_by'
          )
          AND c.table_name NOT IN ('schema_migrations', 'setup_state')
     LOOP