fix(#469): deduplicate cursor-interactive elements in snapshot -C (#475)

Three fixes to eliminate duplicate entries:
1. Skip elements that only inherit cursor:pointer from a parent
   (the parent element is captured instead)
2. Broaden dedup by extracting all quoted text from the ARIA tree,
   not just ref names
3. Add accepted cursor elements to the dedup set to prevent
   multiple DOM elements with the same text from duplicating

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/snapshot.ts

@@ -233,6 +233,13 @@ async function findCursorInteractiveElements(
 
       if (!hasCursorPointer && !hasOnClick && !hasTabIndex) continue;
 
+      // Skip elements that only inherit cursor:pointer from an ancestor
+      // (the ancestor itself will be captured instead)
+      if (hasCursorPointer && !hasOnClick && !hasTabIndex) {
+        const parent = el.parentElement;
+        if (parent && getComputedStyle(parent).cursor === 'pointer') continue;
+      }
+
       const text = (el.textContent || '').trim().slice(0, 100);
       if (!text) continue;
 
@@ -287,11 +294,17 @@ export async function getEnhancedSnapshot(
 
     // Filter out elements whose text is already captured in the snapshot
     const existingTexts = new Set(Object.values(refs).map((r) => r.name?.toLowerCase()));
+    // Also extract quoted strings from the ARIA tree for broader dedup
+    for (const m of enhancedTree.matchAll(/"([^"]+)"/g)) {
+      existingTexts.add(m[1].toLowerCase());
+    }
 
     const additionalLines: string[] = [];
     for (const el of cursorElements) {
-      // Skip if text already captured (likely already in ARIA tree)
-      if (existingTexts.has(el.text.toLowerCase())) continue;
+      const elTextLower = el.text.toLowerCase();
+      // Skip if text already captured in the ARIA tree
+      if (existingTexts.has(elTextLower)) continue;
+      existingTexts.add(elTextLower);
 
       const ref = nextRef();
       const role = el.hasCursorPointer ? 'clickable' : el.hasOnClick ? 'clickable' : 'focusable';