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https://github.com/NanmiCoder/cc-haha
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Workspace inspection was visible only as a side panel, while file restore still lived behind the older per-message rewind affordance. This adds a chat-flow change card for the completed turn, keeps undo routed through checkpoint rewind, and tightens the workspace split layout so narrow and fullscreen windows keep both chat and file preview usable. Constraint: Current session file changes must work for non-Git directories when transcript tool edits are available Constraint: Workspace preview must remain right-docked without horizontal overflow across narrow and wide desktop viewports Rejected: Keep only hover rewind | users could not clearly see what the current turn changed before undoing it Rejected: Use Git as the only changed-file source | many desktop sessions run in temporary or non-Git directories Confidence: high Scope-risk: moderate Directive: Keep checkpoint rewind as the source of truth for undo semantics; workspace diffs are a preview surface, not the restore authority Tested: bun test src/server/__tests__/sessions.test.ts src/server/__tests__/workspace-service.test.ts Tested: cd desktop && bun run test -- src/components/chat/MessageList.test.tsx src/components/workspace/WorkspacePanel.test.tsx src/stores/workspacePanelStore.test.ts src/pages/ActiveSession.test.tsx Tested: cd desktop && bun run lint Tested: cd desktop && bun run build Tested: bun /tmp/cc-haha-layout-e2e/run-layout-e2e.mjs Not-tested: Native Tauri packaged app window chrome behavior