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LLM session-id header injection for DeepSeek Harness: registers a provider route whose requests carry the live session id in a configurable HTTP header, reusing the pi-ai openai-completions wire implementation so a gateway can correlate every request with

Route and rewrite the harness's outbound HTTP requests by host and path, with a native right-sidebar monitor.

DSH plugin: makes the session header (top bar) collapsible as a drawer with smooth CSS transition animation