fix: toolbar compact mode not triggering on Windows due to left-side overflow (#1375)

The toolbar container used `justify-end` which caused content to overflow
to the left side. Browser `scrollWidth` does not account for left-side
overflow, so `useAutoCompact` could never detect it and compact mode
never activated — resulting in clipped tab labels (e.g. "aude" instead
of "Claude") at minimum window width.

Fix: remove `justify-end` from the toolbar container and use `ml-auto`
on the child element instead. This keeps the right-aligned appearance
but makes overflow go rightward, where `scrollWidth` correctly detects
it and triggers compact mode.

Co-authored-by: zuolan <zuolan1102@qq.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -24,3 +24,4 @@ flatpak/cc-switch.deb
 flatpak-build/
 flatpak-repo/
 .worktrees/
+.spec-workflow/

src/App.tsx

@@ -996,10 +996,10 @@ function App() {
               )}
             <div
               ref={toolbarRef}
-              className="flex flex-1 min-w-0 overflow-x-hidden justify-end items-center"
+              className="flex flex-1 min-w-0 overflow-x-hidden items-center"
             >
               <div
-                className="flex shrink-0 items-center gap-1.5"
+                className="flex shrink-0 items-center gap-1.5 ml-auto"
                 style={{ WebkitAppRegion: "no-drag" } as any}
               >
                 {currentView === "prompts" && (