[Improve] Route tasks using linked issue context#693
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daniel-lxs
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…t routing to Gemini 3.6 Flash (#716) * [Improve] Gate the linked-issue fetch on the routing precheck and default routing to Gemini 3.6 Flash The external issue fetch added in #693 ran before every routing call with a pasted GitHub/Linear issue link, paying up to the 8s lookup deadline even when the message alone already routed. Routing now runs a tool-free precheck first and only fetches when it returns needsExternalLookup=true, then re-routes with the issue as untrusted context. Fail-open behavior is unchanged: an unavailable integration or empty fetch keeps the precheck decision. Routing inference now resolves context.routingModel, then the new R_ROUTER_MODEL deployment override, then defaults to google/gemini-3.6-flash instead of falling through to the deployment small model. In the router external-lookup gate eval (4 repetitions, 5 candidates), Gemini 3.6 Flash was the only stable gate: it asked for the issue exactly when the message alone couldn't route (0% false lookups, 100% recall) at ~4.5s per call. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Keep DEFAULT_ROUTING_MODEL module-private to satisfy Knip Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
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…xpires A new fake-timer test for the shared 8s deadline exposed that withExternalLookupTimeout received an already-invoked promise, so an exhausted deadline still fired the next MCP call and merely ignored its result (pre-existing since #693). The helper now takes a thunk and checks the remaining budget before dispatching. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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What changed
Pasted GitHub and configured Linear issue URLs are now resolved before workspace routing. Their issue details are supplied as bounded, untrusted routing context, with one shared 8-second fail-open lookup deadline. Trailing URL punctuation, including ellipses, is removed before lookup. GitHub routing now exposes the read-only issue tools required for this lookup.
Why this change was made
The router previously classified a task from the message and environment descriptions alone, even when a linked issue contained the information needed to choose the correct workspace.
Impact
Tasks started with a supported issue link can route using the linked issue's title and description. Punctuation from ordinary prose no longer prevents supported issue links from being recognized, while unavailable integrations and slow MCP responses continue routing without external context or extending the shared lookup budget.