List current provider integration directory metadata

Returns read-only connected-app directory metadata for current provider workspaces when the authenticated automation client has provider_workspace.read. External URL: /v1/providers/current/integrations. Current Next.js implementation path: /api/platform/v1/providers/current/integrations. This read-only route does not require Idempotency-Key; it exposes contract metadata, redacted credential posture, sync health, support owner, source-mode, certification, and deferred action availability only. It never returns raw credentials, OAuth tokens, webhook secrets, raw sync payloads, customer PII, direct external-system calls, install mutations, pause/resume mutations, or revocation mutations.