refactor: extract frustration tracking into separate add-on script

Move rage click and dead click detection (35% of script.js) into
script.frustration.js as an optional add-on. Core script drops from
8.1KB to 5.7KB gzipped. Add-on auto-discovers core via window.pulse
polling and supports opt-out via data-no-rage/data-no-dead attributes.

- Expose cleanPath on window.pulse for add-on consumption
- Add script.frustration.js to middleware PUBLIC_ROUTES
- Update integration guides, ScriptSetupBlock, and FrustrationTable
  empty state to reference the add-on script

components/IntegrationGuide.tsx

@@ -67,6 +67,18 @@ export function IntegrationGuide({ integration, children }: IntegrationGuideProp
 
         <div className="prose prose-neutral dark:prose-invert max-w-none">
           {children}
+
+          <hr className="my-8 border-neutral-200 dark:border-neutral-800" />
+          <h3>Optional: Frustration Tracking</h3>
+          <p>
+            Detect rage clicks and dead clicks by adding the frustration tracking
+            add-on after the core script:
+          </p>
+          <pre><code>{`<script defer src="https://pulse.ciphera.net/script.frustration.js"></script>`}</code></pre>
+          <p>
+            No extra configuration needed. Add <code>data-no-rage</code> or{' '}
+            <code>data-no-dead</code> to disable individual signals.
+          </p>
         </div>
 
         {/* * --- Related Integrations --- */}

components/behavior/FrustrationTable.tsx

@@ -184,8 +184,11 @@ export default function FrustrationTable({
                 No {title.toLowerCase()} detected
               </h4>
               <p className="text-sm text-neutral-500 dark:text-neutral-400 max-w-md">
-                {description}. Data will appear here once frustration signals are detected on your site.
+                Frustration tracking requires the add-on script. Add it after your core Pulse script:
               </p>
+              <code className="text-xs bg-neutral-100 dark:bg-neutral-800 text-neutral-700 dark:text-neutral-300 px-3 py-2 rounded-lg font-mono break-all">
+                {'<script defer src="https://pulse.ciphera.net/script.frustration.js"></script>'}
+              </code>
             </div>
           )}
         </div>

components/sites/ScriptSetupBlock.tsx

@@ -92,6 +92,9 @@ export default function ScriptSetupBlock({
         <p className="mt-2 text-xs text-neutral-500 dark:text-neutral-400">
           Default: cross-tab (localStorage). Optional: <code className="rounded px-1 bg-neutral-200 dark:bg-neutral-700">data-storage=&quot;session&quot;</code> to opt out (per-tab, ephemeral). Optional: <code className="rounded px-1 bg-neutral-200 dark:bg-neutral-700">data-storage-ttl=&quot;48&quot;</code> to set expiry in hours (default: 24).
         </p>
+        <p className="mt-1.5 text-xs text-neutral-500 dark:text-neutral-400">
+          Optional: add <code className="rounded px-1 bg-neutral-200 dark:bg-neutral-700">{`<script defer src="${APP_URL}/script.frustration.js"></script>`}</code> for rage click and dead click detection.
+        </p>
         <button
           type="button"
           onClick={copyScript}

middleware.ts

@@ -13,6 +13,7 @@ const PUBLIC_ROUTES = new Set([
   '/changelog',
   '/installation',
   '/script.js', // * Tracking script – must load without auth for embedded sites (Shopify, etc.)
+  '/script.frustration.js', // * Frustration tracking add-on (rage clicks, dead clicks)
 ])
 
 const PUBLIC_PREFIXES = [

public/script.frustration.js

@@ -0,0 +1,313 @@
+/**
+ * Pulse Frustration Tracking Add-on
+ * Detects rage clicks and dead clicks. Requires the core Pulse script.
+ * Opt-out: add data-no-rage or data-no-dead to either script tag.
+ */
+(function() {
+  'use strict';
+
+  // * Capture own script tag for opt-out attributes (must be at parse time)
+  // * Fallback to querySelector for dynamic insertion (e.g. tag managers) where currentScript is null
+  var addonScript = document.currentScript || document.querySelector('script[src*="script.frustration"]');
+
+  var MAX_WAIT = 5000;
+  var POLL_INTERVAL = 50;
+  var waited = 0;
+
+  function init() {
+    var pulse = window.pulse;
+    if (!pulse || typeof pulse.track !== 'function' || typeof pulse.cleanPath !== 'function') {
+      waited += POLL_INTERVAL;
+      if (waited < MAX_WAIT) {
+        setTimeout(init, POLL_INTERVAL);
+      } else {
+        if (typeof console !== 'undefined' && console.warn) {
+          console.warn('Pulse frustration add-on: core script not detected. Frustration tracking disabled.');
+        }
+      }
+      return;
+    }
+
+    var trackCustomEvent = pulse.track;
+    var cleanPath = pulse.cleanPath;
+
+    // * Check opt-out attributes on both the add-on script tag and the core script tag
+    var coreScript = document.querySelector('script[data-domain]');
+
+    function hasOptOut(attr) {
+      return (addonScript && addonScript.hasAttribute(attr)) ||
+             (coreScript && coreScript.hasAttribute(attr));
+    }
+
+    // * Strip HTML tags from a string (used for sanitizing attribute values)
+    function stripHtml(str) {
+      if (typeof str !== 'string') return '';
+      return str.replace(/<[^>]*>/g, '').trim();
+    }
+
+    // * Build a compact element identifier string for frustration tracking
+    // * Format: tag#id.class1.class2[href="/path"]
+    function getElementIdentifier(el) {
+      if (!el || !el.tagName) return '';
+      var result = el.tagName.toLowerCase();
+
+      // * Add #id if present
+      if (el.id) {
+        result += '#' + stripHtml(el.id);
+      }
+
+      // * Add classes (handle SVG elements where className is SVGAnimatedString)
+      var rawClassName = el.className;
+      if (rawClassName && typeof rawClassName !== 'string' && rawClassName.baseVal !== undefined) {
+        rawClassName = rawClassName.baseVal;
+      }
+      if (typeof rawClassName === 'string' && rawClassName.trim()) {
+        var classes = rawClassName.trim().split(/\s+/);
+        var filtered = [];
+        for (var ci = 0; ci < classes.length && filtered.length < 5; ci++) {
+          var cls = classes[ci];
+          if (cls.length > 50) continue;
+          if (/^(ng-|js-|is-|has-|animate)/.test(cls)) continue;
+          filtered.push(cls);
+        }
+        if (filtered.length > 0) {
+          result += '.' + filtered.join('.');
+        }
+      }
+
+      // * Add key attributes
+      var attrs = ['href', 'role', 'type', 'name', 'data-action'];
+      for (var ai = 0; ai < attrs.length; ai++) {
+        var attrName = attrs[ai];
+        var attrVal = el.getAttribute(attrName);
+        if (attrVal !== null && attrVal !== '') {
+          var sanitized = stripHtml(attrVal);
+          if (sanitized.length > 50) sanitized = sanitized.substring(0, 50);
+          result += '[' + attrName + '="' + sanitized + '"]';
+        }
+      }
+
+      // * Truncate to max 200 chars
+      if (result.length > 200) {
+        result = result.substring(0, 200);
+      }
+
+      return result;
+    }
+
+    // * Auto-track rage clicks (rapid repeated clicks on the same element)
+    // * Fires rage_click when same element is clicked 3+ times within 800ms
+    if (!hasOptOut('data-no-rage')) {
+      var rageClickHistory = {};  // * selector -> { times: [timestamps], lastFired: 0 }
+      var RAGE_CLICK_THRESHOLD = 3;
+      var RAGE_CLICK_WINDOW = 800;
+      var RAGE_CLICK_DEBOUNCE = 5000;
+      var RAGE_CLEANUP_INTERVAL = 10000;
+
+      // * Cleanup stale rage click entries every 10 seconds
+      setInterval(function() {
+        var now = Date.now();
+        for (var key in rageClickHistory) {
+          if (!rageClickHistory.hasOwnProperty(key)) continue;
+          var entry = rageClickHistory[key];
+          // * Remove if last click was more than 10 seconds ago
+          if (entry.times.length === 0 || now - entry.times[entry.times.length - 1] > RAGE_CLEANUP_INTERVAL) {
+            delete rageClickHistory[key];
+          }
+        }
+      }, RAGE_CLEANUP_INTERVAL);
+
+      document.addEventListener('click', function(e) {
+        var el = e.target;
+        if (!el || !el.tagName) return;
+
+        var selector = getElementIdentifier(el);
+        if (!selector) return;
+
+        var now = Date.now();
+        var currentPath = cleanPath();
+
+        if (!rageClickHistory[selector]) {
+          rageClickHistory[selector] = { times: [], lastFired: 0 };
+        }
+
+        var entry = rageClickHistory[selector];
+
+        // * Add current click timestamp
+        entry.times.push(now);
+
+        // * Remove clicks outside the time window
+        while (entry.times.length > 0 && now - entry.times[0] > RAGE_CLICK_WINDOW) {
+          entry.times.shift();
+        }
+
+        // * Check if rage click threshold is met
+        if (entry.times.length >= RAGE_CLICK_THRESHOLD) {
+          // * Skip if user is selecting text (triple-click to select paragraph)
+          try {
+            var sel = window.getSelection();
+            if (sel && sel.toString().trim().length > 0) {
+              entry.times = [];
+              return;
+            }
+          } catch (ex) {}
+
+          // * Debounce: max one rage_click per element per 5 seconds
+          if (now - entry.lastFired >= RAGE_CLICK_DEBOUNCE) {
+            var clickCount = entry.times.length;
+            trackCustomEvent('rage_click', {
+              selector: selector,
+              click_count: String(clickCount),
+              page_path: currentPath,
+              x: String(Math.round(e.clientX)),
+              y: String(Math.round(e.clientY))
+            });
+            entry.lastFired = now;
+          }
+          // * Reset tracker after firing or debounce skip
+          entry.times = [];
+        }
+      }, true); // * Capture phase
+    }
+
+    // * Auto-track dead clicks (clicks on interactive elements that produce no effect)
+    // * Fires dead_click when an interactive element is clicked but no DOM change, navigation,
+    // * or network request occurs within 1 second
+    if (!hasOptOut('data-no-dead')) {
+      var INTERACTIVE_SELECTOR = 'a,button,input,select,textarea,[role="button"],[role="link"],[role="tab"],[role="menuitem"],[onclick],[tabindex]:not([tabindex="-1"])';
+      var DEAD_CLICK_DEBOUNCE = 10000;
+      var DEAD_CLEANUP_INTERVAL = 30000;
+      var deadClickDebounce = {}; // * selector -> lastFiredTimestamp
+
+      // * Cleanup stale dead click debounce entries every 30 seconds
+      setInterval(function() {
+        var now = Date.now();
+        for (var key in deadClickDebounce) {
+          if (!deadClickDebounce.hasOwnProperty(key)) continue;
+          if (now - deadClickDebounce[key] > DEAD_CLEANUP_INTERVAL) {
+            delete deadClickDebounce[key];
+          }
+        }
+      }, DEAD_CLEANUP_INTERVAL);
+
+      // * Polyfill check for Element.matches
+      var matchesFn = (function() {
+        var ep = Element.prototype;
+        return ep.matches || ep.msMatchesSelector || ep.webkitMatchesSelector || null;
+      })();
+
+      // * Find the nearest interactive element by walking up max 3 levels
+      function findInteractiveElement(el) {
+        if (!matchesFn) return null;
+        var depth = 0;
+        var current = el;
+        while (current && depth <= 3) {
+          if (current.nodeType === 1 && matchesFn.call(current, INTERACTIVE_SELECTOR)) {
+            return current;
+          }
+          current = current.parentElement;
+          depth++;
+        }
+        return null;
+      }
+
+      document.addEventListener('click', function(e) {
+        var target = findInteractiveElement(e.target);
+        if (!target) return;
+
+        // * Skip form inputs — clicking to focus/interact is expected, not a dead click
+        var tag = target.tagName;
+        if (tag === 'INPUT' || tag === 'TEXTAREA' || tag === 'SELECT') return;
+
+        var selector = getElementIdentifier(target);
+        if (!selector) return;
+
+        var now = Date.now();
+
+        // * Debounce: max one dead_click per element per 10 seconds
+        if (deadClickDebounce[selector] && now - deadClickDebounce[selector] < DEAD_CLICK_DEBOUNCE) {
+          return;
+        }
+
+        var currentPath = cleanPath();
+        var clickX = String(Math.round(e.clientX));
+        var clickY = String(Math.round(e.clientY));
+        var effectDetected = false;
+        var hrefBefore = location.href;
+        var mutationObs = null;
+        var perfObs = null;
+        var cleanupTimer = null;
+        var popstateHandler = null;
+        var hashchangeHandler = null;
+
+        function cleanup() {
+          if (mutationObs) { try { mutationObs.disconnect(); } catch (ex) {} mutationObs = null; }
+          if (perfObs) { try { perfObs.disconnect(); } catch (ex) {} perfObs = null; }
+          if (cleanupTimer) { clearTimeout(cleanupTimer); cleanupTimer = null; }
+          if (popstateHandler) { window.removeEventListener('popstate', popstateHandler); popstateHandler = null; }
+          if (hashchangeHandler) { window.removeEventListener('hashchange', hashchangeHandler); hashchangeHandler = null; }
+        }
+
+        function onEffect() {
+          effectDetected = true;
+          cleanup();
+        }
+
+        // * Set up MutationObserver to detect DOM changes on the element, its parent, and body
+        if (typeof MutationObserver !== 'undefined') {
+          try {
+            mutationObs = new MutationObserver(function() {
+              onEffect();
+            });
+            var mutOpts = { childList: true, attributes: true, characterData: true, subtree: true };
+            mutationObs.observe(target, mutOpts);
+            var parent = target.parentElement;
+            if (parent && parent.tagName !== 'HTML' && parent.tagName !== 'BODY') {
+              mutationObs.observe(parent, { childList: true });
+            }
+            // * Also observe body for top-level DOM changes (modals, drawers, overlays, toasts)
+            mutationObs.observe(document.body, { childList: true, attributes: true });
+          } catch (ex) {
+            mutationObs = null;
+          }
+        }
+
+        // * Set up PerformanceObserver to detect network requests
+        if (typeof PerformanceObserver !== 'undefined') {
+          try {
+            perfObs = new PerformanceObserver(function() {
+              onEffect();
+            });
+            perfObs.observe({ type: 'resource' });
+          } catch (ex) {
+            perfObs = null;
+          }
+        }
+
+        // * Listen for SPA navigation events (popstate, hashchange)
+        popstateHandler = function() { onEffect(); };
+        hashchangeHandler = function() { onEffect(); };
+        window.addEventListener('popstate', popstateHandler);
+        window.addEventListener('hashchange', hashchangeHandler);
+
+        // * After 1 second, check if any effect was detected
+        cleanupTimer = setTimeout(function() {
+          cleanup();
+          // * Also check if navigation occurred
+          if (effectDetected || location.href !== hrefBefore) return;
+
+          deadClickDebounce[selector] = Date.now();
+          trackCustomEvent('dead_click', {
+            selector: selector,
+            page_path: currentPath,
+            x: clickX,
+            y: clickY
+          });
+        }, 1000);
+      }, true); // * Capture phase
+    }
+  }
+
+  // * Start immediately — if core is already loaded, init succeeds on the first call
+  init();
+})();

public/script.js

@@ -417,6 +417,7 @@
   // * Expose pulse.track() for custom events (e.g. pulse.track('signup_click'))
   window.pulse = window.pulse || {};
   window.pulse.track = trackCustomEvent;
+  window.pulse.cleanPath = cleanPath;
 
   // * Auto-track 404 error pages (on by default)
   // * Detects pages where document.title contains "404" or "not found"
@@ -474,276 +475,6 @@
     }, { passive: true });
   }
 
-  // * Strip HTML tags from a string (used for sanitizing attribute values)
-  function stripHtml(str) {
-    if (typeof str !== 'string') return '';
-    return str.replace(/<[^>]*>/g, '').trim();
-  }
-
-  // * Build a compact element identifier string for frustration tracking
-  // * Format: tag#id.class1.class2[href="/path"]
-  function getElementIdentifier(el) {
-    if (!el || !el.tagName) return '';
-    var result = el.tagName.toLowerCase();
-
-    // * Add #id if present
-    if (el.id) {
-      result += '#' + stripHtml(el.id);
-    }
-
-    // * Add classes (handle SVG elements where className is SVGAnimatedString)
-    var rawClassName = el.className;
-    if (rawClassName && typeof rawClassName !== 'string' && rawClassName.baseVal !== undefined) {
-      rawClassName = rawClassName.baseVal;
-    }
-    if (typeof rawClassName === 'string' && rawClassName.trim()) {
-      var classes = rawClassName.trim().split(/\s+/);
-      var filtered = [];
-      for (var ci = 0; ci < classes.length && filtered.length < 5; ci++) {
-        var cls = classes[ci];
-        if (cls.length > 50) continue;
-        if (/^(ng-|js-|is-|has-|animate)/.test(cls)) continue;
-        filtered.push(cls);
-      }
-      if (filtered.length > 0) {
-        result += '.' + filtered.join('.');
-      }
-    }
-
-    // * Add key attributes
-    var attrs = ['href', 'role', 'type', 'name', 'data-action'];
-    for (var ai = 0; ai < attrs.length; ai++) {
-      var attrName = attrs[ai];
-      var attrVal = el.getAttribute(attrName);
-      if (attrVal !== null && attrVal !== '') {
-        var sanitized = stripHtml(attrVal);
-        if (sanitized.length > 50) sanitized = sanitized.substring(0, 50);
-        result += '[' + attrName + '="' + sanitized + '"]';
-      }
-    }
-
-    // * Truncate to max 200 chars
-    if (result.length > 200) {
-      result = result.substring(0, 200);
-    }
-
-    return result;
-  }
-
-  // * Auto-track rage clicks (rapid repeated clicks on the same element)
-  // * Fires rage_click when same element is clicked 3+ times within 800ms
-  // * Opt-out: add data-no-rage to the script tag
-  if (!script.hasAttribute('data-no-rage')) {
-    var rageClickHistory = {};  // * selector -> { times: [timestamps], lastFired: 0 }
-    var RAGE_CLICK_THRESHOLD = 3;
-    var RAGE_CLICK_WINDOW = 800;
-    var RAGE_CLICK_DEBOUNCE = 5000;
-    var RAGE_CLEANUP_INTERVAL = 10000;
-
-    // * Cleanup stale rage click entries every 10 seconds
-    setInterval(function() {
-      var now = Date.now();
-      for (var key in rageClickHistory) {
-        if (!rageClickHistory.hasOwnProperty(key)) continue;
-        var entry = rageClickHistory[key];
-        // * Remove if last click was more than 10 seconds ago
-        if (entry.times.length === 0 || now - entry.times[entry.times.length - 1] > RAGE_CLEANUP_INTERVAL) {
-          delete rageClickHistory[key];
-        }
-      }
-    }, RAGE_CLEANUP_INTERVAL);
-
-    document.addEventListener('click', function(e) {
-      var el = e.target;
-      if (!el || !el.tagName) return;
-
-      var selector = getElementIdentifier(el);
-      if (!selector) return;
-
-      var now = Date.now();
-      var currentPath = cleanPath();
-
-      if (!rageClickHistory[selector]) {
-        rageClickHistory[selector] = { times: [], lastFired: 0 };
-      }
-
-      var entry = rageClickHistory[selector];
-
-      // * Add current click timestamp
-      entry.times.push(now);
-
-      // * Remove clicks outside the time window
-      while (entry.times.length > 0 && now - entry.times[0] > RAGE_CLICK_WINDOW) {
-        entry.times.shift();
-      }
-
-      // * Check if rage click threshold is met
-      if (entry.times.length >= RAGE_CLICK_THRESHOLD) {
-        // * Skip if user is selecting text (triple-click to select paragraph)
-        try {
-          var sel = window.getSelection();
-          if (sel && sel.toString().trim().length > 0) {
-            entry.times = [];
-            return;
-          }
-        } catch (ex) {}
-
-        // * Debounce: max one rage_click per element per 5 seconds
-        if (now - entry.lastFired >= RAGE_CLICK_DEBOUNCE) {
-          var clickCount = entry.times.length;
-          trackCustomEvent('rage_click', {
-            selector: selector,
-            click_count: String(clickCount),
-            page_path: currentPath,
-            x: String(Math.round(e.clientX)),
-            y: String(Math.round(e.clientY))
-          });
-          entry.lastFired = now;
-        }
-        // * Reset tracker after firing or debounce skip
-        entry.times = [];
-      }
-    }, true); // * Capture phase
-  }
-
-  // * Auto-track dead clicks (clicks on interactive elements that produce no effect)
-  // * Fires dead_click when an interactive element is clicked but no DOM change, navigation,
-  // * or network request occurs within 1 second
-  // * Opt-out: add data-no-dead to the script tag
-  if (!script.hasAttribute('data-no-dead')) {
-    var INTERACTIVE_SELECTOR = 'a,button,input,select,textarea,[role="button"],[role="link"],[role="tab"],[role="menuitem"],[onclick],[tabindex]:not([tabindex="-1"])';
-    var DEAD_CLICK_DEBOUNCE = 10000;
-    var DEAD_CLEANUP_INTERVAL = 30000;
-    var deadClickDebounce = {}; // * selector -> lastFiredTimestamp
-
-    // * Cleanup stale dead click debounce entries every 30 seconds
-    setInterval(function() {
-      var now = Date.now();
-      for (var key in deadClickDebounce) {
-        if (!deadClickDebounce.hasOwnProperty(key)) continue;
-        if (now - deadClickDebounce[key] > DEAD_CLEANUP_INTERVAL) {
-          delete deadClickDebounce[key];
-        }
-      }
-    }, DEAD_CLEANUP_INTERVAL);
-
-    // * Polyfill check for Element.matches
-    var matchesFn = (function() {
-      var ep = Element.prototype;
-      return ep.matches || ep.msMatchesSelector || ep.webkitMatchesSelector || null;
-    })();
-
-    // * Find the nearest interactive element by walking up max 3 levels
-    function findInteractiveElement(el) {
-      if (!matchesFn) return null;
-      var depth = 0;
-      var current = el;
-      while (current && depth <= 3) {
-        if (current.nodeType === 1 && matchesFn.call(current, INTERACTIVE_SELECTOR)) {
-          return current;
-        }
-        current = current.parentElement;
-        depth++;
-      }
-      return null;
-    }
-
-    document.addEventListener('click', function(e) {
-      var target = findInteractiveElement(e.target);
-      if (!target) return;
-
-      // * Skip form inputs — clicking to focus/interact is expected, not a dead click
-      var tag = target.tagName;
-      if (tag === 'INPUT' || tag === 'TEXTAREA' || tag === 'SELECT') return;
-
-      var selector = getElementIdentifier(target);
-      if (!selector) return;
-
-      var now = Date.now();
-
-      // * Debounce: max one dead_click per element per 10 seconds
-      if (deadClickDebounce[selector] && now - deadClickDebounce[selector] < DEAD_CLICK_DEBOUNCE) {
-        return;
-      }
-
-      var currentPath = cleanPath();
-      var clickX = String(Math.round(e.clientX));
-      var clickY = String(Math.round(e.clientY));
-      var effectDetected = false;
-      var hrefBefore = location.href;
-      var mutationObs = null;
-      var perfObs = null;
-      var cleanupTimer = null;
-      var popstateHandler = null;
-      var hashchangeHandler = null;
-
-      function cleanup() {
-        if (mutationObs) { try { mutationObs.disconnect(); } catch (ex) {} mutationObs = null; }
-        if (perfObs) { try { perfObs.disconnect(); } catch (ex) {} perfObs = null; }
-        if (cleanupTimer) { clearTimeout(cleanupTimer); cleanupTimer = null; }
-        if (popstateHandler) { window.removeEventListener('popstate', popstateHandler); popstateHandler = null; }
-        if (hashchangeHandler) { window.removeEventListener('hashchange', hashchangeHandler); hashchangeHandler = null; }
-      }
-
-      function onEffect() {
-        effectDetected = true;
-        cleanup();
-      }
-
-      // * Set up MutationObserver to detect DOM changes on the element, its parent, and body
-      if (typeof MutationObserver !== 'undefined') {
-        try {
-          mutationObs = new MutationObserver(function() {
-            onEffect();
-          });
-          var mutOpts = { childList: true, attributes: true, characterData: true, subtree: true };
-          mutationObs.observe(target, mutOpts);
-          var parent = target.parentElement;
-          if (parent && parent.tagName !== 'HTML' && parent.tagName !== 'BODY') {
-            mutationObs.observe(parent, { childList: true });
-          }
-          // * Also observe body for top-level DOM changes (modals, drawers, overlays, toasts)
-          mutationObs.observe(document.body, { childList: true, attributes: true });
-        } catch (ex) {
-          mutationObs = null;
-        }
-      }
-
-      // * Set up PerformanceObserver to detect network requests
-      if (typeof PerformanceObserver !== 'undefined') {
-        try {
-          perfObs = new PerformanceObserver(function() {
-            onEffect();
-          });
-          perfObs.observe({ type: 'resource' });
-        } catch (ex) {
-          perfObs = null;
-        }
-      }
-
-      // * Listen for SPA navigation events (popstate, hashchange)
-      popstateHandler = function() { onEffect(); };
-      hashchangeHandler = function() { onEffect(); };
-      window.addEventListener('popstate', popstateHandler);
-      window.addEventListener('hashchange', hashchangeHandler);
-
-      // * After 1 second, check if any effect was detected
-      cleanupTimer = setTimeout(function() {
-        cleanup();
-        // * Also check if navigation occurred
-        if (effectDetected || location.href !== hrefBefore) return;
-
-        deadClickDebounce[selector] = Date.now();
-        trackCustomEvent('dead_click', {
-          selector: selector,
-          page_path: currentPath,
-          x: clickX,
-          y: clickY
-        });
-      }, 1000);
-    }, true); // * Capture phase
-  }
-
   // * Auto-track outbound link clicks and file downloads (on by default)
   // * Opt-out: add data-no-outbound or data-no-downloads to the script tag
   var trackOutbound = !script.hasAttribute('data-no-outbound');