fix step-behind titles: UIAutomation element label from click watcher + smarter search fallback

**Root cause**
When OCR fails, the title fell back to the browser window title.  For a
click on a search-results page, the window title reflects the *previous*
search query ("oracle - Google Search"), producing "Search for Oracle"
even though the user is clicking a link *on* that page.

**Fix 1: UIAutomation element label from the click watcher**
The C# click-watcher hook now enriches each click in a background thread
(ClickProcessorLoop) rather than in the hook callback:
- MouseHookCallback captures window title synchronously (fast Win32),
  then queues a PendingClick and returns immediately.
- ClickProcessorLoop calls AutomationElement.FromPoint() via reflection
  (no compile-time assembly reference → no startup failure if UIA is
  absent).  Wrapped in a 300ms timeout thread so slow UIA calls don't
  delay the click event past the frame buffer window.
- Emits CTX + ELEM (label/role/value) + CLICK as an atomic batch.

Node.js:
- Parses ELEM events, merges element info into _pendingWindowContext.
- clickMeta.windowContext now carries elementLabel/elementRole/elementValue
  in addition to windowTitle/appName.
- buildCaptureTitle priority-5 (element label) now fires from click-watcher
  data, giving "Select Oracle | Cloud Applications…" without OCR.

**Fix 2: Wider OCR crop**
ocrAroundClick now uses a full-display-width × 100px horizontal strip at
the click height.  The previous 420 px crop cropped through long link text
(e.g. "Oracle | Cloud Applications and Cloud Platform"), causing fragments
to be scored lower than the complete text.

**Fix 3: Search-results window title fallback**
extractSearchQuery now only produces "Search for Oracle" when recentTyped
is non-empty (the user was actually typing a query).  For a pure click on
the search-results page (no recent typing), the fallback is "Select a
Oracle result in Chrome" — honest about what we know without implying the
user performed the search in this step.

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

tests/unit/text-intel.test.js

@@ -102,18 +102,26 @@ test('browser window title strips browser name and falls back to page title', ()
   assert.ok(title.toLowerCase().includes('oracle') || title.toLowerCase().includes('cloud'), `Expected oracle/cloud in title, got: ${title}`);
 });
 
-test('search query is extracted from browser window title pattern', () => {
+test('search query is extracted when user was typing (search step)', () => {
   const title = buildCaptureTitle({
     mode: 'fullscreen',
-    metadata: {
-      windowTitle: 'oracle - Google Search - Google Chrome',
-      appName: 'chrome',
-    },
+    metadata: { windowTitle: 'oracle - Google Search - Google Chrome', appName: 'chrome' },
     ocrText: '',
+    recentTyped: 'oracle',   // user was typing → this IS the search step
   });
   assert.equal(title, 'Search for Oracle in Chrome');
 });
 
+test('search results window title produces select-result title when no typing (click on results page)', () => {
+  const title = buildCaptureTitle({
+    mode: 'fullscreen',
+    metadata: { windowTitle: 'oracle - Google Search - Google Chrome', appName: 'chrome' },
+    ocrText: '',
+    recentTyped: '',         // no recent typing → user is clicking a result, not searching
+  });
+  assert.equal(title, 'Select a Oracle result in Chrome');
+});
+
 test('full link text with pipe separator is preserved in OCR phrases', () => {
   const title = buildCaptureTitle({
     mode: 'fullscreen',