fix: clean up stray timestamp artifacts on search results

extension/content.js

@@ -18,6 +18,15 @@ const FEED_HOME_PATHS = ['/', '/home.php'];
 const sessionSearchRecordedUrls = new Set();
 const sessionSearchInfoCache = new Map();
 
+function isOnSearchResultsPage() {
+  try {
+    const pathname = window.location && window.location.pathname;
+    return typeof pathname === 'string' && pathname.startsWith(SEARCH_RESULTS_PATH_PREFIX);
+  } catch (error) {
+    return false;
+  }
+}
+
 const trackerElementsByPost = new WeakMap();
 const postAdditionalNotes = new WeakMap();
 
@@ -1002,6 +1011,28 @@ function hidePostElement(postElement) {
   }
 
   let removalRoot = elementToRemove;
+  let parentForTimestampCheck = removalRoot.parentElement;
+  while (parentForTimestampCheck && parentForTimestampCheck !== document.body && parentForTimestampCheck !== document.documentElement) {
+    const siblings = Array.from(parentForTimestampCheck.children);
+    const nonRootSiblings = siblings.filter((sibling) => sibling !== removalRoot);
+    if (!nonRootSiblings.length) {
+      break;
+    }
+    const hasOnlyTimestampSiblings = nonRootSiblings.every((sibling) => isTimestampArtifactNode(sibling));
+    if (hasOnlyTimestampSiblings) {
+      removalRoot = parentForTimestampCheck;
+      parentForTimestampCheck = removalRoot.parentElement;
+      continue;
+    }
+    const hasTimestampSibling = nonRootSiblings.some((sibling) => isTimestampArtifactNode(sibling));
+    if (hasTimestampSibling && siblings.length <= 3) {
+      removalRoot = parentForTimestampCheck;
+      parentForTimestampCheck = removalRoot.parentElement;
+      continue;
+    }
+    break;
+  }
+
   let parent = removalRoot.parentElement;
 
   while (parent && parent !== document.body && parent !== document.documentElement) {
@@ -1046,6 +1077,12 @@ function hidePostElement(postElement) {
   } else {
     removalRoot.style.display = 'none';
   }
+
+  if (removalParent) {
+    cleanupDanglingSearchArtifacts(removalParent);
+  } else {
+    cleanupDanglingSearchArtifacts(document);
+  }
 }
 
 function collectButtonMeta(button) {
@@ -3463,6 +3500,100 @@ function findAndClickCommentButton(postElement) {
   return false;
 }
 
+function containsPostContent(element) {
+  if (!element || element.nodeType !== Node.ELEMENT_NODE) {
+    return false;
+  }
+  if (element.matches && element.matches('article, [role="article"]')) {
+    return true;
+  }
+  if (element.querySelector && element.querySelector('article, [role="article"]')) {
+    return true;
+  }
+  if (element.matches && element.matches('[data-fb-tracker-processed="1"]')) {
+    return true;
+  }
+  return false;
+}
+
+function isTimestampArtifactNode(node) {
+  if (!node || node.nodeType !== Node.ELEMENT_NODE) {
+    return false;
+  }
+  if (!node.classList) {
+    return false;
+  }
+  if (!node.classList.contains('__fb-light-mode') && !node.classList.contains('__fb-dark-mode')) {
+    return false;
+  }
+  if (node.querySelector && node.querySelector('article, [role="article"]')) {
+    return false;
+  }
+  const text = node.textContent ? node.textContent.trim() : '';
+  if (!text) {
+    return true;
+  }
+  if (text.length > 80) {
+    return false;
+  }
+  const lowered = text.toLowerCase();
+  const hasDate = /\b\d{1,2}\.\s*(?:jan|feb|mär|mae|apr|mai|jun|jul|aug|sep|okt|nov|dez)/i.test(lowered);
+  const hasTime = /\b\d{1,2}[:.]\d{2}\b/.test(lowered);
+  const hasMonthWord = /\b(?:januar|februar|märz|maerz|april|mai|juni|juli|august|september|oktober|november|dezember)\b/.test(lowered);
+  if (hasDate || hasTime || hasMonthWord) {
+    return true;
+  }
+  return false;
+}
+
+function removeNodeAndEmptyAncestors(node) {
+  if (!node || node.nodeType !== Node.ELEMENT_NODE) {
+    return;
+  }
+  const parents = [];
+  let currentParent = node.parentElement;
+  node.remove();
+
+  while (currentParent && currentParent !== document.body && currentParent !== document.documentElement) {
+    parents.push(currentParent);
+    currentParent = currentParent.parentElement;
+  }
+
+  parents.forEach((parentNode) => {
+    if (parentNode.childElementCount === 0) {
+      parentNode.remove();
+    }
+  });
+}
+
+function cleanupDanglingSearchArtifacts(context) {
+  if (!isOnSearchResultsPage()) {
+    return;
+  }
+  const scope = (context && context.nodeType === Node.ELEMENT_NODE)
+    ? context
+    : document;
+  const candidates = scope.querySelectorAll('div.__fb-light-mode, div.__fb-dark-mode');
+  candidates.forEach((node) => {
+    if (!isTimestampArtifactNode(node)) {
+      return;
+    }
+    const parent = node.parentElement;
+    if (parent) {
+      const hasContentSibling = Array.from(parent.children).some((child) => {
+        if (child === node) {
+          return false;
+        }
+        return containsPostContent(child);
+      });
+      if (hasContentSibling) {
+        return;
+      }
+    }
+    removeNodeAndEmptyAncestors(node);
+  });
+}
+
 /**
  * Find comment input field on current page
  */