Feat(Chore): Verify Flow, Invites, Suspend, Depart Cert Policy

feat: add password reset and email verification flow
feat: add org invite listing, cancellation, and invite link fallback
feat: add user suspend/unsuspend with audit logging
feat: add department certificate policy (expiry, extensions)
feat: enforce dept cert policy on SSH certificate signing
feat: wire up OIDC consent and token flow (replace mocks)
feat: rework CLI auth bridge to use frontend login flow
feat: add admin OAuth provider management (CRUD)
chore: refactor model import paths after module reorganisation
chore: clean up config, decorators, and dev tooling

gatehouse_app/services/ssh_key_service.py

@@ -291,6 +291,8 @@ class SSHKeyService:
             logger.info(f"SSH key verified: {key_id}")
             return True
         
+        except SSHKeyError:
+            raise
         except Exception as e:
             logger.error(f"SSH key verification failed: {str(e)}")
             raise SSHKeyError(f"Signature verification failed: {str(e)}")