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Manifest is racing an OpenCode session-header enforcement deadline of September 6
[redacted], published 2026-09-03, starts sending an x-opencode-session header on every OpenCode Go/Zen request, a hashed per-conversation id when the caller supplies x-session-key and a stable per-agent fallback otherwise, explicitly 'ahead of OpenCode's 09/06 enforcement deadline'. The same patch stops listing OpenRouter :batch model variants in discovery because they only work through the asynchronous Batch API and always 404 on the synchronous chat completions proxy, and bumps fast-uri to 3.1.6 for four advisories. The follow-up 6.22.0 on 2026-09-04 gives custom providers a readable alias in /v1/models and adds an Automation harness category with n8n as its first platform.
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