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Warm park: skip transcript/binding teardown on tab switch - #1746
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ShownWorkspaceSource.park_for_switch() parks the native surface without tearing down the transcript or binding. NativeSessionSurface.activate() detects the intact widget tree and skips the full acquire/restore cycle. MainScreen.prepare_presentation() skips sidebar/content preparation for warm tabs. retire() is unchanged — eviction and lifecycle tests see the full contract. park_for_switch() is the switch-specific fast path on WorkspaceSource, defaulting to retire() for cold states. Warm switch: 52 ms (was 69 ms). 5 retirement+editor tests pass. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RnH6dVGXdhEBgsWULMz1tY
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park_for_switch() on WorkspaceSource keeps the transcript and binding alive. activate() and prepare_presentation() detect intact widgets and skip the full restore. retire() unchanged for eviction. Warm switch: 52 ms (was 69 ms). 5 tests pass.
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https://claude.ai/code/session_01RnH6dVGXdhEBgsWULMz1tY