feat: partial turn preservation and cooperative stream cancellation#279

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feat/stream-cancellation

Commits on Apr 2, 2026

feat: add partial_reason to AssistantTurn and merge_content_text helper

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feat: preserve partial turns on stream interruption via try/finally

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feat: exclude partial turns from token accounting and cost

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feat: display partial turns with [interrupted] in Chat repr

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fix: resolve pyright errors in try/finally blocks

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feat: add StreamController class for cooperative stream cancellation

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feat: add controller parameter to stream() and stream_async()

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feat: create internal StreamController for chat() and chat_async()

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style: auto-format with ruff

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docs: document controller parameter on stream() and stream_async()

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fix: address review feedback on stream cancellation PR

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docs: add changelog entries for stream cancellation and partial turns

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feat: extract TurnAccumulator class for streaming turn lifecycle

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fix: address code review feedback on TurnAccumulator

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refactor: rewrite _submit_turns streaming branches to use TurnAccumulator

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style: auto-format with ruff

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refactor: extract resolve_assistant_turn to deduplicate turn finalization

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Merge branch 'main' into feat/stream-cancellation
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fix: address code review — auto-reset stale controllers, fix partial turn filtering

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feat: partial turn preservation and cooperative stream cancellation#279

feat: partial turn preservation and cooperative stream cancellation#279
cpsievert wants to merge 24 commits intomainfrom
feat/stream-cancellation

Commits on Apr 2, 2026

feat: add partial_reason to AssistantTurn and merge_content_text helper

feat: preserve partial turns on stream interruption via try/finally

feat: exclude partial turns from token accounting and cost

feat: display partial turns with [interrupted] in Chat repr

fix: resolve pyright errors in try/finally blocks

feat: add StreamController class for cooperative stream cancellation

feat: add controller parameter to stream() and stream_async()

feat: create internal StreamController for chat() and chat_async()

style: auto-format with ruff

docs: document controller parameter on stream() and stream_async()

fix: address review feedback on stream cancellation PR

docs: add changelog entries for stream cancellation and partial turns

feat: extract TurnAccumulator class for streaming turn lifecycle

fix: address code review feedback on TurnAccumulator

refactor: rewrite _submit_turns streaming branches to use TurnAccumulator

style: auto-format with ruff

refactor: extract resolve_assistant_turn to deduplicate turn finalization

Merge branch 'main' into feat/stream-cancellation

fix: address code review — auto-reset stale controllers, fix partial turn filtering

Commits on May 8, 2026

Merge branch 'main' into feat/stream-cancellation

refactor: move streaming content logic into TurnAccumulator

docs: explain why streaming responses need explicit close()

chore: move stream cancellation changelog entries to unreleased

fix: use private _update_turn in TurnAccumulator tests