fix(resource-usage): friendly label in kill-confirm dialog

The kill-confirm dialog showed the raw session ID
(uuid@@worktreeId@@absolute-path), which overflowed the dialog because
UUIDs/paths have no break points and isn't actionable for the user
anyway — they don't recognize their terminals by GUID.

Use session.label (e.g. "Terminal 2") and put it directly in the
dialog title so the body copy stays short and readable: "Kill Terminal 2?
Force-quits this terminal. Any unsaved work in the pane is lost."

Co-authored-by: Orca <help@stably.ai>

src/renderer/src/components/status-bar/ResourceUsageStatusSegment.tsx

@@ -1253,11 +1253,16 @@ export function ResourceUsageStatusSegment({
             }}
           >
             <DialogHeader>
-              <DialogTitle className="text-sm">Kill this session?</DialogTitle>
+              <DialogTitle className="text-sm">
+                Kill{' '}
+                <span className="font-medium text-foreground">
+                  {killConfirm?.label ?? 'this session'}
+                </span>
+                ?
+              </DialogTitle>
               <DialogDescription className="text-xs">
-                Force-quits{' '}
-                <span className="font-medium text-foreground">{killConfirm?.sessionId}</span>. Any
-                unsaved work in that pane is lost. This can&apos;t be undone.
+                Force-quits this terminal. Any unsaved work in the pane is lost. This can&apos;t be
+                undone.
               </DialogDescription>
             </DialogHeader>
             <DialogFooter>