[AmethystLiang]

Problem

onCloseAllFiles was renamed to _onCloseAllFiles during destructuring but the usage on line 543 wasn't updated, causing a TypeScript error. Additionally, the file exceeded the max-lines limit (400), and there were several linting violations (inconsistent-type-definitions, max-lines, curly braces).

Solution

• Fixed the variable reference from onCloseAllFiles to _onCloseAllFiles
• Extracted the SortableTab component to a separate file to reduce TabBar.tsx from 572 to ~400 lines
• Fixed all linting issues (converted interfaces to types, added required curly braces)
• Build now passes successfully