(v0.4.2) Minor update

New

• Double-click a tab to set or clear it as the build target (same as ⌘⇧P / right-click)
• Collapsible bottom panel — hide the Terminal / Issues / Log area with ⇧⌘Y or the status-bar button; it reopens automatically when a build reports errors
• ⌘⇧A shuttles keyboard focus between the editor and the AI input (and still sends the selection when there is one)
• AI input now grows with your text up to 6 lines and then scrolls, and Shift+Enter inserts a newline
• The AI system prompt gains a Clear button, applies to the next message without a restart, and can be left blank
• The AI Attach activated document toggle now persists across launches

Fixed

• Tab state cross-contamination — opening several files at once no longer shows the build target’s content in the wrong tabs, and each tab keeps its own PDF scroll position
• Stale highlight artifacts — thin residual lines left behind by bracket and selection highlights are gone; gutter fold marks stay aligned
• Selection alignment — the selection highlight now matches the line height instead of drooping below the text, especially with a custom editor font
• Bottom panel state — a panel hidden at quit now stays hidden on the next launch instead of reappearing out of sync with its toggle icon
• Korean / IME input in the AI box no longer drops the second composed syllable
• Minor bug fixes