PR #15083 — fix CodeRabbit + CI (Prettier, graphqlError leak, migration CHECK)

BOLT-2023 connect subgraph. Branch BOLT-2023/connect-subgraph. Fixing: (1) Prettier import in authorization.test.ts (CI test/test blocker; prior Cursor fix was reverted in 332630d), (2) graphqlError returning raw error.message -> static fallback, (3) migration CHECK constraint for APPROVED requires approvedAt. Skipping Critical auth-gate finding (false positive: enforced by @requireClientAuthentication directive). Flagging to Slava: userKey/accountKey output exposure (breaking API change) + atomic active-app check (heavy lift).