v0.5.2
The uploader gains --doctor, an install-time self-diagnosis (Python, config, schema, network path with DNS/firewall/TLS-trust classification, and a system-clock check against server time — no bundle needed), and the new docs/TROUBLESHOOTING.md indexes failure modes by symptom with exact error texts. The AI-agent runbook now verifies installs with the doctor. No schema or protocol changes.