feat(sdk,core): close resumed chat streams promptly when caught up#4349

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ericallam wants to merge 19 commits into

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feat/s2-caught-up-reads

Commits on Jul 23, 2026

feat(sdk,core): close resumed chat streams promptly when caught up
ericallam
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fix(webapp): stop the dev server sending duplicate CORS headers
ericallam
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fix(core): end caught-up tracking on all terminal stream paths
ericallam
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Commits on Jul 24, 2026

fix(core,sdk): settle resumed chat streams correctly on caught-up
ericallam
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docs(ai-chat): document tail-on-ping and the client-side caught-up close
ericallam
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test(webapp): full-stack session-stream e2e over s2-lite
ericallam
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test(webapp): browser-level cross-origin session-stream e2e
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test(webapp): make the browser session-stream leg CI-robust
ericallam
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test(webapp): cover more session-stream scenarios
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test(webapp): full-stack chat.agent e2e with the real turn loop
ericallam
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test(webapp): agent e2e legs for validate rejection, action, and stop
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test(webapp): agent e2e legs for tools, HITL, and snapshot restore
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test(webapp): agent e2e legs for regenerate, tool approval, and session isolation
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test(core,webapp): in-process waitpoint backend for run-lifecycle e2e
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test(webapp): suspend/resume, upgrade deferral, and multi-hop continuation legs
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test(core,webapp): suspend-hook, OOM-retry, and idle-timeout e2e legs
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fix(sdk): recover the in-flight message on a preloaded chat.agent retry
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fix(core): stop reconnecting a session stream after the consumer cancels
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ci(e2e-webapp): pre-pull the MinIO image for the session-stream e2e
ericallam
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