fix(ui): address code review feedback

- ChatMessage: use CSS variable syntax for bg-neo-accent and text consistency
- DebugLogViewer: fix info log level to use --color-neo-log-info
- TerminalTabs: use neo-hover-subtle for hover states instead of text color
- globals.css: fix shimmer effect selector to target .neo-progress-fill
- globals.css: fix loading spinner visibility with explicit border color
- globals.css: add will-change for .neo-btn-yolo performance
- App.tsx: group constants after imports
- NewProjectModal: remove redundant styling (neo-card provides these)
- Add tsconfig.tsbuildinfo to .gitignore and remove from tracking

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

ui/src/components/TerminalTabs.tsx

@@ -165,7 +165,7 @@ export function TerminalTabs({
             ${
               activeTerminalId === terminal.id
                 ? 'bg-neo-progress text-black'
-                : 'bg-[#3a3a3a] text-white hover:bg-neo-text-secondary'
+                : 'bg-[#3a3a3a] text-white hover:bg-[var(--color-neo-hover-subtle)]'
             }
           `}
           onClick={() => onSelect(terminal.id)}
@@ -212,7 +212,7 @@ export function TerminalTabs({
       {/* Add new terminal button */}
       <button
         onClick={onCreate}
-        className="flex items-center justify-center w-8 h-8 border-2 border-black bg-[#3a3a3a] text-white hover:bg-neo-text-secondary transition-colors"
+        className="flex items-center justify-center w-8 h-8 border-2 border-black bg-[#3a3a3a] text-white hover:bg-[var(--color-neo-hover-subtle)] transition-colors"
         title="New terminal"
       >
         <Plus className="w-4 h-4" />