PHP SDK 2.0.11
Fixes managed worker recovery when upstream proxies return non-JSON availability errors.
- Preserve HTTP status and omit unstructured error bodies from diagnostics.
- Retry supported upstream failures during polling and worker heartbeats with capped backoff and responsive shutdown.
- Retain poll identity across uncertain outcomes; do not repeat activity handlers or ambiguous completion acknowledgements.
- Keep malformed successful replies, authentication/configuration errors, structured refusals, and uncertain registrations terminal.
No worker-protocol change. Structured bootstrap-readiness recovery remains tracked separately in #70.
Source qualification, regression tests, and isolated nginx outage/recovery evidence: #71.