🤖 perf: keep AIView mounted across workspace switches

[ammar-agent]

Summary

• keep AIView mounted when switching workspaces to avoid full remounts
• reset per-workspace UI state (editing, bash groups, auto-scroll) on workspace changes
• dedupe background bash process updates and refresh foreground IDs before auto-backgrounding

Performance

• Estimated: removes redundant background-bash update churn; compaction UI integration runtime dropped from ~72s timeout to ~19s locally, indicating fewer re-renders and lower memory pressure.

Testing

• make static-check
• BABEL_ENV=test NODE_ENV=test TEST_INTEGRATION=1 bun x jest tests/ui/compaction.integration.test.ts --runTestsByPath --silent

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[chatgpt-codex-connector]

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[ammar-agent]

@codex review

Cleared agent list on workspace change to avoid stale options during fetch.

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Reviewed commit: 3632a21977

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[ammar-agent]

@codex review

Handled terminate RPC exceptions by clearing terminating state on error.

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Reviewed commit: 6695fa9128

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[ammar-agent]

@codex review

Resolved the edit-state leak by scoping editing state to workspaceId (editingMessage is undefined immediately on switch). Added process list dedupe in BackgroundBashStore to avoid redundant bumps that were triggering the UI integration test OOM.

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Codex Review: Didn't find any major issues. You're on a roll.

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