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## Summary Add keyboard shortcuts (Cmd/Ctrl + Left/Right arrow keys) to navigate between commits in the Profiler's snapshot view. Moved `filteredCommitIndices` management and commit navigation logic (`selectNextCommitIndex`, `selectPrevCommitIndex`) from `SnapshotSelector` into `useCommitFilteringAndNavigation` used by `ProfilerContext` to enable keyboard shortcuts from the top-level Profiler component. ## How did you test this change? - New tests in ProfilerContext-tests - Built browser extension: `yarn build:<browser name>` - tested in browser: `yarn run test:<browser name>` - Manually verified Left/Right arrow navigation cycles through commits - Verified navigation respects commit duration filter - Verified reload-and-profile button unaffected Chrome: https://github.com/user-attachments/assets/01d2a749-13dc-4d08-8bcb-3d4d45a5f97c Edge with duration filter: https://github.com/user-attachments/assets/a7f76ff7-2a0b-4b9c-a0ce-d4449373308b firefox mixing hotkey with clicking arrow buttons: https://github.com/user-attachments/assets/48912d68-7c75-40f2-a203-5e6d7e6b2d99
…35341) Continue attaching `internalInstanceKey` to DOM nodes in DEV. This prevents breaking some internal dev tooling while we experiment with the broader change. Note that this does not reference the DOM handle within the flag, just attaches it and deletes it. Internals tracking is still done through the private map.
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