VibeProxy returns empty responses on Factory's context compaction requests

[alexhooketh]

This has started happening since version before the latest or around that. It worked before. All compactions fail, which renders chat sessions unfeasible to use after the context window runs out.
It's likely not on Factory's end, since I've never updated it when it broke. I did update Factory to the latest version when this started happening though, with no result.

[solev]

Having same issues when using Copilot sub. Context does not seem to auto-compact. Also when I try manually, it fails.

[ongyimeng]

@ranaroussi would really appreciate your help on this

[ranaroussi]

This appears to be an upstream CLIProxyAPI /v1/responses/compact compatibility issue rather than a VibeProxy UI/app-layer bug. VibeProxy only bundles and launches the backend; it cannot correctly implement compact request normalization unless CLIProxyAPI supports it. Related upstream reports include router-for-me/CLIProxyAPI#3008 and #3074. Closing this here as upstream-dependent.