[Cherry-pick] Cherry-pick to release-v0.177.0

[truefoundry-saas]

Automated cherry-pick for release request 899ed502-7cb2-475e-b87f-41145ff617cb.

Source PRs (merged to main):

• feat: implement timeout for create-turn SSE writes to enhance reliability #964
• bugfix: show token and cost metrics for failed and cancelled turns #963
• Raise model body timeout and shorten default MCP request timeout #965

Do not merge manually — this PR is merged automatically when the release request is approved. If you do merge it yourself, use "Sync status" on the request so it stops showing as pending.

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Note

Medium Risk
Default timeout changes alter when model and MCP calls fail or succeed, and the SSE write timeout changes streaming client behavior under slow consumers; metrics typing affects billing visibility but is additive.

Overview
Release cherry-pick that adjusts outbound timeouts, hardens create-turn streaming, and fixes usage display for failed/cancelled turns.

Outbound defaults: Model provider body idle timeout goes from 5s to 60s (config, core constants, and .env.example). MCP end-to-end request and matching headers timeout defaults drop from 4 minutes to 2 minutes.

Create-turn SSE: Each SSE writeSSE is bounded by new TURN_SSE_STREAM_WRITE_TIMEOUT_MS (default 60s). On timeout or write failure, the handler stops writing to that client, logs disconnect/timeout, may abort the stream, but keeps turn event drain and dual-write so subscribers still get events.

UI / types: TurnStateCancelled and TurnStateError may carry metrics; the agent-server toUiTurnState adapter maps those through like done, so turn headers and session totals can include tokens/cost from error and cancelled terminal states. Tests cover error/cancelled mapping and session view derivation.

OpenAPI/docs version bumps to 0.177.0-rc.2; changesets document the patch-level package releases.

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[changeset-bot]

🦋 Changeset detected

Latest commit: 4a698c8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@truefoundry/trueforge	Patch
@truefoundry/trueforge-core	Patch
@truefoundry/trueforge-assistant-ui-runtime	Patch
@truefoundry/trueforge-ui	Patch

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[cursor]

Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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[cursor]

Hung SSE write stays uncancelled

Medium Severity

withTimeout races writeSSE without cancelling it, and stream.abort() runs only after drainTurnEvents finishes. A stalled create-turn write therefore stays outstanding for the rest of the turn, so stream.close() can still wait on that write and the HTTP handler never finishes even though drain and dual-write continued.

 

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