update

web/src/features/search/mail-list-table.tsx

@@ -173,7 +173,28 @@ export function MailListTable({
     {
       accessorKey: "subject",
       header: t('search.subject'),
-      cell: ({ row }) => <LongText className='text-xs'>{row.original.subject}</LongText>,
+      cell: ({ row }) => {
+        const tags = row.original.tags ?? [];
+        return (
+          <div className="flex flex-col gap-1 py-1.5 min-w-0">
+            <LongText className='text-xs font-medium truncate'>
+              {row.original.subject}
+            </LongText>
+            {tags.length > 0 && (
+              <div className="flex items-center gap-1 flex-wrap">
+                {tags.map((tag) => (
+                  <span
+                    key={tag}
+                    className="inline-flex items-center rounded-md bg-primary/15 px-2 py-0.5 text-[10px] font-semibold text-primary ring-1 ring-inset ring-primary/20"
+                  >
+                    {tag}
+                  </span>
+                ))}
+              </div>
+            )}
+          </div>
+        );
+      },
       meta: { className: 'text-left text-xs' }
     },
     {

web/src/lib/utils.ts

@@ -88,12 +88,28 @@ export function validateTag(facetPath: string) {
     };
   }
 
-  const invalidChars = /['"`;,()[\]{}<>]/;
-
-  if (invalidChars.test(facetPath)) {
+  if (!facetPath.startsWith('/')) {
     return {
       valid: false,
-      error: "Tag path contains invalid characters"
+      error: "Tag path must start with '/'"
+    };
+  }
+
+  let escaped = false;
+  for (let i = 1; i < facetPath.length; i++) {
+    const char = facetPath[i];
+
+    if (escaped) {
+      escaped = false;
+    } else if (char === '\\') {
+      escaped = true;
+    }
+  }
+
+  if (escaped) {
+    return {
+      valid: false,
+      error: "Tag path has unmatched escape character at the end"
     };
   }
 
@@ -101,6 +117,7 @@ export function validateTag(facetPath: string) {
 }
 
 
+
 export function formatTimestamp(milliseconds: number): string {
   const date = new Date(milliseconds);
   const year = date.getFullYear();