fix: remove redundant ViewMarkdown component, fix clipboard error handling

- Remove ViewMarkdown component and its usage in Feedback (covered by
  CopyPage popover's "View Page as Markdown" link)
- Add .catch() to clipboard writeText so users see "Copy failed" instead
  of nothing on error
- Simplify chevron transform logic in toggle handler
- Remove redundant border: none reset in .copy-page-panel (immediately
  overridden by @apply border)

Author: donjo

_components/Feedback.tsx

@@ -1,5 +1,4 @@
 import EditThisPage from "./EditThisPage.tsx";
-import ViewMarkdown from "./ViewMarkdown.tsx";
 
 export default function Feedback({ file }: { file: string | undefined }) {
   if (!file) {
@@ -71,7 +70,6 @@ export default function Feedback({ file }: { file: string | undefined }) {
                     </svg>
                   </label>
                   {!file.includes("[") && <EditThisPage file={file} />}
-                  {!file.includes("[") && <ViewMarkdown file={file} />}
                 </div>
                 <div
                   id="feedback-more"

_components/ViewMarkdown.tsx

@@ -11,6 +11,15 @@ document.querySelectorAll<HTMLButtonElement>(".copy-page-main-btn").forEach(
             label.textContent = original;
           }, 2000);
         }
+      }).catch(() => {
+        const label = btn.querySelector<HTMLElement>(".copy-page-main-label");
+        if (label) {
+          const original = label.textContent;
+          label.textContent = "Copy failed";
+          setTimeout(() => {
+            label.textContent = original;
+          }, 2000);
+        }
       });
     });
   },
@@ -30,8 +39,8 @@ panel?.addEventListener("toggle", (event) => {
     const rect = toggleBtn.getBoundingClientRect();
     panel.style.top = `${rect.bottom + 4}px`;
     panel.style.right = `${window.innerWidth - rect.right}px`;
-    if (chevron) chevron.style.transform = "rotate(180deg)";
-  } else {
-    if (chevron) chevron.style.transform = "";
+  }
+  if (chevron) {
+    chevron.style.transform = e.newState === "open" ? "rotate(180deg)" : "";
   }
 });

js/copy-page.ts

@@ -1231,8 +1231,6 @@
     inset: unset;
     margin: 0;
     padding: 0;
-    border: none;
-    /* Styled via Tailwind */
     @apply w-72 rounded-md overflow-hidden bg-white dark:bg-gray-900 border
       border-foreground-tertiary shadow-lg;
   }