[Maximooch]

Stacked on Fix ACP resource inputs and Windows stdio baseline (#134). Penguin's ACP client previously saw only text, even when the runtime executed tools. This bridges the existing session-scoped action/action-result and todo events into ACP tool starts, terminal results and plans. Stable tool IDs survive, duplicate results are suppressed, output is bounded, and interrupted tools are finalized before the prompt returns. Unrelated-session and late events are ignored; subscriptions are removed on adapter shutdown.

File locations use absolute paths within the session workspace. Returned diffs remain rendered diff text; this does not pretend to provide full-file native before/after snapshots. Fine-grained command streaming, native diff snapshots and child-session integration remain follow-ups. No hidden reasoning or arbitrary runtime metadata is forwarded.

Validation: 23 focused tests pass including actual CLI/serve subprocess wire validation with a fake core producing tool events; event ordering, cross-session isolation, duplicate suppression, plans, cancellation finalization and late-event rejection. Scoped Ruff and git diff --check pass. No real-editor smoke yet.

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Project	Deployment	Actions	Updated
penguin	Ready	Preview	Oct 28, 2026 4:59am UTC

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[Maximooch]

Integrated with preserved commit history through #161 (main commit abd8a66). Closing this stacked review after verifying its current head is an ancestor of main.