issue-keyword tooltipped tooltipped-se" aria-label="This commit closes issue #2123.">closes #2123 * #2117 * #2129 - related, and commented on in code ### Checklist - [x] I read and understood the [contributing guide](https://github.com/CodeEditApp/CodeEdit/blob/main/CONTRIBUTING.md) as well as the [code of conduct](https://github.com/CodeEditApp/CodeEdit/blob/main/CODE_OF_CONDUCT.md) - [x] The issues this PR addresses are related to each other - [x] My changes generate no new warnings - [x] My code builds and runs on my machine - [x] My changes are all related to the related issue above - [x] I documented my code ### Screenshots Split tab panes with new tab bar design. <img width="1449" height="928" alt="Screenshot 2025-09-10 at 11 14 14 AM" src="https://github.com/user-attachments/assets/6d14cf30-259f-461b-85c9-9717702e730c" /> Some tab styles (selected, hovered, scrolled under container). <img width="414" height="132" alt="image" src="https://github.com/user-attachments/assets/9d171173-f689-4ec9-9ed7-bf15ffed9993" /> <img width="366" height="114" alt="image" src="https://github.com/user-attachments/assets/d1d27adf-2e74-47f2-8c84-23dd76bbf30a" /> <img width="476" height="78" alt="image" src="https://github.com/user-attachments/assets/338c1276-248e-44f7-b610-c9203e2b3482" />

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