diff --git a/.agents/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.agents/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.agents/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.agents/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.agents/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.agents/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.agents/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.agents/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.agents/skills/impeccable/scripts/live-browser.js b/.agents/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.agents/skills/impeccable/scripts/live-browser.js
+++ b/.agents/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.claude/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.claude/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.claude/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.claude/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.claude/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.claude/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.claude/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.claude/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.claude/skills/impeccable/scripts/live-browser.js b/.claude/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.claude/skills/impeccable/scripts/live-browser.js
+++ b/.claude/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.cursor/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.cursor/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.cursor/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.cursor/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.cursor/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.cursor/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.cursor/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.cursor/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.cursor/skills/impeccable/scripts/live-browser.js b/.cursor/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.cursor/skills/impeccable/scripts/live-browser.js
+++ b/.cursor/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.gemini/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.gemini/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.gemini/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.gemini/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.gemini/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.gemini/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.gemini/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.gemini/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.gemini/skills/impeccable/scripts/live-browser.js b/.gemini/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.gemini/skills/impeccable/scripts/live-browser.js
+++ b/.gemini/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.github/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.github/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.github/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.github/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.github/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.github/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.github/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.github/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.github/skills/impeccable/scripts/live-browser.js b/.github/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.github/skills/impeccable/scripts/live-browser.js
+++ b/.github/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.kiro/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.kiro/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.kiro/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.kiro/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.kiro/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.kiro/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.kiro/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.kiro/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.kiro/skills/impeccable/scripts/live-browser.js b/.kiro/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.kiro/skills/impeccable/scripts/live-browser.js
+++ b/.kiro/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.opencode/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.opencode/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.opencode/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.opencode/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.opencode/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.opencode/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.opencode/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.opencode/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.opencode/skills/impeccable/scripts/live-browser.js b/.opencode/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.opencode/skills/impeccable/scripts/live-browser.js
+++ b/.opencode/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.pi/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.pi/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.pi/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.pi/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.pi/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.pi/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.pi/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.pi/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.pi/skills/impeccable/scripts/live-browser.js b/.pi/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.pi/skills/impeccable/scripts/live-browser.js
+++ b/.pi/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.qoder/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.qoder/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.qoder/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.qoder/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.qoder/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.qoder/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.qoder/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.qoder/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.qoder/skills/impeccable/scripts/live-browser.js b/.qoder/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.qoder/skills/impeccable/scripts/live-browser.js
+++ b/.qoder/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.rovodev/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.rovodev/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.rovodev/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.rovodev/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.rovodev/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.rovodev/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.rovodev/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.rovodev/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.rovodev/skills/impeccable/scripts/live-browser.js b/.rovodev/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.rovodev/skills/impeccable/scripts/live-browser.js
+++ b/.rovodev/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.trae-cn/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.trae-cn/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.trae-cn/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.trae-cn/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.trae-cn/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.trae-cn/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.trae-cn/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.trae-cn/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.trae-cn/skills/impeccable/scripts/live-browser.js b/.trae-cn/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.trae-cn/skills/impeccable/scripts/live-browser.js
+++ b/.trae-cn/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/.trae/skills/impeccable/scripts/detector/browser/injected/index.mjs b/.trae/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/.trae/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/.trae/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.trae/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/.trae/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/.trae/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/.trae/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/.trae/skills/impeccable/scripts/live-browser.js b/.trae/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/.trae/skills/impeccable/scripts/live-browser.js
+++ b/.trae/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/cli/engine/browser/injected/index.mjs b/cli/engine/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/cli/engine/browser/injected/index.mjs
+++ b/cli/engine/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/cli/engine/detect-antipatterns-browser.js b/cli/engine/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/cli/engine/detect-antipatterns-browser.js
+++ b/cli/engine/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/plugin/skills/impeccable/scripts/detector/browser/injected/index.mjs b/plugin/skills/impeccable/scripts/detector/browser/injected/index.mjs
index ceff16737..29b20f5ee 100644
--- a/plugin/skills/impeccable/scripts/detector/browser/injected/index.mjs
+++ b/plugin/skills/impeccable/scripts/detector/browser/injected/index.mjs
@@ -1437,13 +1437,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -1497,7 +1504,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -1565,7 +1572,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -1585,6 +1592,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -1599,11 +1607,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -1618,10 +1626,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/plugin/skills/impeccable/scripts/detector/detect-antipatterns-browser.js b/plugin/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
index 88439a5c3..f1535b97a 100644
--- a/plugin/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
+++ b/plugin/skills/impeccable/scripts/detector/detect-antipatterns-browser.js
@@ -4253,13 +4253,20 @@ if (IS_BROWSER) {
     return true;
   }
 
-  function postSerializedFindings(groupMap) {
+  function scanResultMeta(options = {}) {
+    const scanId = options.scanId;
+    if (typeof scanId !== 'string' && typeof scanId !== 'number') return {};
+    return { scanId: String(scanId) };
+  }
+
+  function postSerializedFindings(groupMap, options = {}) {
     if (!EXTENSION_MODE) return;
     const allFindings = browserFindingsFromMap(groupMap);
     window.postMessage({
       source: 'impeccable-results',
       findings: serializeFindings(allFindings),
       count: allFindings.length,
+      ...scanResultMeta(options),
     }, '*');
   }
 
@@ -4313,7 +4320,7 @@ if (IS_BROWSER) {
             rememberVisualContrastAnalysis(result);
             const added = addVisualContrastResult(groupMap, result, { decorate: true });
             if (added) {
-              postSerializedFindings(groupMap);
+              postSerializedFindings(groupMap, options);
               window.dispatchEvent(new CustomEvent('impeccable-visual-contrast-resolved', {
                 detail: {
                   selector: result.selector,
@@ -4381,7 +4388,7 @@ if (IS_BROWSER) {
     overlayIndex = 0;
   }
 
-  function renderBrowserFindings(collected) {
+  function renderBrowserFindings(collected, options = {}) {
     const { allFindings, pageLevelFindings } = collected;
 
     for (const { el, findings } of allFindings) {
@@ -4401,6 +4408,7 @@ if (IS_BROWSER) {
         source: 'impeccable-results',
         findings: serializeFindings(allFindings),
         count: allFindings.length,
+        ...scanResultMeta(options),
       }, '*');
     }
 
@@ -4415,11 +4423,11 @@ if (IS_BROWSER) {
     clearOverlays();
     const generation = scanGeneration;
     const collected = collectBrowserFindings();
-    const allFindings = renderBrowserFindings(collected);
+    const allFindings = renderBrowserFindings(collected, options);
     if (shouldRunVisualContrast(options)) {
       addVisualContrastFindings(collected.groupMap, options, { decorate: true, generation })
         .then(() => {
-          if (generation === scanGeneration) postSerializedFindings(collected.groupMap);
+          if (generation === scanGeneration) postSerializedFindings(collected.groupMap, options);
         })
         .catch(err => {
           reportVisualContrastError(err);
@@ -4434,10 +4442,10 @@ if (IS_BROWSER) {
     if (shouldRunVisualContrast(options)) {
       const collected = await collectBrowserFindingsAsync(options, { generation, scheduleLazy: true });
       if (generation !== scanGeneration) return [];
-      return renderBrowserFindings(collected);
+      return renderBrowserFindings(collected, options);
     }
     lastVisualContrastAnalyses = [];
-    return renderBrowserFindings(collectBrowserFindings());
+    return renderBrowserFindings(collectBrowserFindings(), options);
   };
 
   const detect = function(options = {}) {
diff --git a/plugin/skills/impeccable/scripts/live-browser.js b/plugin/skills/impeccable/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/plugin/skills/impeccable/scripts/live-browser.js
+++ b/plugin/skills/impeccable/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/skill/scripts/live-browser.js b/skill/scripts/live-browser.js
index 9b2d24f83..f609ac847 100644
--- a/skill/scripts/live-browser.js
+++ b/skill/scripts/live-browser.js
@@ -6088,6 +6088,10 @@ void main() {
   let steerFocusRecoverTimer = null;
   const STEER_PAGE_FOCUS_PAUSE_MS = 500;
   let detectActive = false;
+  let detectScanSeq = 0;
+  let activeDetectScanId = null;
+  let pendingDetectScanId = null;
+  const DETECT_EMPTY_MESSAGE = 'No detector issues found.';
   const PICK_PREFS_KEY = 'impeccable-live-pick';
   const INTERACTION_PREFS_KEY = 'impeccable-live-interaction';
   const PLACEHOLDER_DEFAULT_HEIGHT = 80;
@@ -7601,6 +7605,17 @@ void main() {
   let detectReady = false; // true once detect script posts 'impeccable-ready'
   let detectPendingScan = false; // scan requested before script was ready
 
+  function requestDetectScan() {
+    const scanId = String(++detectScanSeq);
+    activeDetectScanId = scanId;
+    pendingDetectScanId = scanId;
+    window.postMessage({
+      source: 'impeccable-command',
+      action: 'scan',
+      config: { scanId },
+    }, '*');
+  }
+
   function toggleDetect() {
     if (pendingApplyInFlight) { showManualApplyBusyToast(); return; }
     detectActive = !detectActive;
@@ -7611,12 +7626,14 @@ void main() {
         detectPendingScan = true;
         loadDetectScript();
       } else if (detectReady) {
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       } else {
         detectPendingScan = true;
       }
     } else {
       window.postMessage({ source: 'impeccable-command', action: 'remove' }, '*');
+      activeDetectScanId = null;
+      pendingDetectScanId = null;
       detectCount = 0;
       updateGlobalBarState();
     }
@@ -7686,12 +7703,18 @@ void main() {
       detectReady = true;
       if (detectPendingScan && detectActive) {
         detectPendingScan = false;
-        window.postMessage({ source: 'impeccable-command', action: 'scan' }, '*');
+        requestDetectScan();
       }
     }
     // Scan results arrived
     if (e.data.source === 'impeccable-results') {
+      if (!detectActive) return;
+      if (activeDetectScanId && e.data.scanId !== activeDetectScanId) return;
       detectCount = e.data.count || 0;
+      if (detectActive && pendingDetectScanId && detectCount === 0) {
+        showToast(DETECT_EMPTY_MESSAGE, 3200);
+      }
+      pendingDetectScanId = null;
       updateGlobalBarState();
     }
   }
diff --git a/tests/detect-antipatterns-browser.test.mjs b/tests/detect-antipatterns-browser.test.mjs
index bc44898fa..9388de8d2 100644
--- a/tests/detect-antipatterns-browser.test.mjs
+++ b/tests/detect-antipatterns-browser.test.mjs
@@ -577,6 +577,61 @@ describe('detectUrl — browser-only fixtures', () => {
     }
   });
 
+  it('extension mode echoes scan ids on result messages', async () => {
+    const puppeteer = await import('puppeteer');
+    const browser = await puppeteer.default.launch({
+      headless: true,
+      args: process.env.CI ? ['--no-sandbox', '--disable-setuid-sandbox'] : [],
+    });
+    try {
+      const page = await browser.newPage();
+      await page.setViewport({ width: 1280, height: 800 });
+      await page.goto(`${baseUrl}/fixtures/antipatterns/should-pass.html`, { waitUntil: 'load' });
+      const browserScript = fs.readFileSync(path.join(ROOT, 'cli/engine/detect-antipatterns-browser.js'), 'utf-8');
+      await page.evaluate(() => {
+        document.documentElement.dataset.impeccableExtension = 'true';
+        window.__impeccableMessages = [];
+        window.addEventListener('message', event => {
+          if (event.source !== window || !event.data?.source?.startsWith('impeccable-')) return;
+          window.__impeccableMessages.push(event.data);
+        });
+      });
+      await page.evaluate(browserScript);
+      const result = await page.evaluate(async () => {
+        window.postMessage({
+          source: 'impeccable-command',
+          action: 'scan',
+          config: { scanId: 'scan-2' },
+        }, '*');
+        const deadline = Date.now() + 1000;
+        while (
+          Date.now() < deadline &&
+          !window.__impeccableMessages.some(message =>
+            message.source === 'impeccable-results' &&
+            message.scanId === 'scan-2'
+          )
+        ) {
+          await new Promise(resolve => setTimeout(resolve, 25));
+        }
+        const resultMessage = window.__impeccableMessages.find(message =>
+          message.source === 'impeccable-results' &&
+          message.scanId === 'scan-2'
+        );
+        return {
+          ready: window.__impeccableMessages.some(message => message.source === 'impeccable-ready'),
+          scanId: resultMessage?.scanId || null,
+          count: resultMessage?.count ?? null,
+        };
+      });
+      assert.equal(result.ready, true, `expected extension ready message, got: ${JSON.stringify(result)}`);
+      assert.equal(result.scanId, 'scan-2', `expected scan id echo in results, got: ${JSON.stringify(result)}`);
+      assert.equal(result.count, 0, `expected clean fixture to have no findings, got: ${JSON.stringify(result)}`);
+      await page.close();
+    } finally {
+      await browser.close().catch(() => {});
+    }
+  });
+
   it('browser API: impeccableDetect is pure, impeccableScan decorates', async () => {
     const puppeteer = await import('puppeteer');
     const browser = await puppeteer.default.launch({
diff --git a/tests/live-browser-regression.test.mjs b/tests/live-browser-regression.test.mjs
index cabe0bf3c..3cd986fdf 100644
--- a/tests/live-browser-regression.test.mjs
+++ b/tests/live-browser-regression.test.mjs
@@ -292,6 +292,34 @@ describe('live-browser.js regression guards', () => {
     );
   });
 
+  it('detect mode shows an empty result toast once per requested scan', () => {
+    assert.match(
+      SOURCE,
+      /const DETECT_EMPTY_MESSAGE = 'No detector issues found\.';/,
+      'live detector zero result copy should live in one named constant',
+    );
+    assert.match(
+      SOURCE,
+      /function requestDetectScan\(\)[\s\S]{0,240}?const scanId = String\(\+\+detectScanSeq\);[\s\S]{0,80}?activeDetectScanId = scanId;[\s\S]{0,160}?config: \{ scanId \}/,
+      'Detect scans must send a fresh scan id to the detector',
+    );
+    assert.match(
+      SOURCE,
+      /if \(!detectActive\) return;[\s\S]{0,80}?if \(activeDetectScanId && e\.data\.scanId !== activeDetectScanId\) return;/,
+      'live detector results must ignore inactive and stale scan ids',
+    );
+    assert.match(
+      SOURCE,
+      /if \(detectActive && pendingDetectScanId && detectCount === 0\) \{[\s\S]{0,80}?showToast\(DETECT_EMPTY_MESSAGE, 3200\);[\s\S]{0,120}?pendingDetectScanId = null;/,
+      'a matching zero result scan must use the existing toast UI and clear the pending scan id',
+    );
+    assert.match(
+      SOURCE,
+      /window\.postMessage\(\{ source: 'impeccable-command', action: 'remove' \}, '\*'\);[\s\S]{0,80}?activeDetectScanId = null;[\s\S]{0,80}?pendingDetectScanId = null;/,
+      'turning Detect off must clear scan ids',
+    );
+  });
+
   it('insert mode UI and generate payload guards', () => {
     assert.match(SOURCE, /function toggleInsert\(\)/, 'global bar must expose insert toggle');
     assert.match(SOURCE, /PREFIX \+ '-insert-toggle'/, 'insert toggle needs stable id');