OpenAI-compatible streaming requests previously used the shared AI request timeout as a full-body AbortSignal. That made long SSE generations stop mid-answer after the configured timeout even when the upstream had already started streaming.
The proxy now applies the configured timeout only while opening streaming upstream requests and keeps non-streaming requests on the existing full-request timeout.
Constraint: The global AI request timeout is documented as covering provider requests and streaming first responses, not total stream duration.
Rejected: Increase the default timeout | long plan-mode answers can still exceed any fixed full-stream limit.
Confidence: high
Scope-risk: narrow
Tested: bun test src/server/__tests__/proxy-network-settings.test.ts
Tested: bun run check:server
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