fix: resolve upstream merge build errors

Fix duplicated isGiteaError export in errors.ts and add missing
refissue.ts from v1.26.1 merge.

Authored-by: Moko Consulting
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

web_src/js/markup/refissue.ts

@@ -0,0 +1,42 @@
+import {queryElems} from '../utils/dom.ts';
+import {parseIssueHref} from '../utils.ts';
+import {createApp} from 'vue';
+import {createTippy, getAttachedTippyInstance} from '../modules/tippy.ts';
+
+export function initMarkupRefIssue(el: HTMLElement) {
+  queryElems(el, '.ref-issue', (el) => {
+    el.addEventListener('mouseenter', showMarkupRefIssuePopup);
+    el.addEventListener('focus', showMarkupRefIssuePopup);
+  });
+}
+
+function showMarkupRefIssuePopup(e: MouseEvent | FocusEvent) {
+  const refIssue = e.currentTarget as HTMLElement;
+  if (getAttachedTippyInstance(refIssue)) return;
+  if (refIssue.classList.contains('ref-external-issue')) return;
+
+  const issuePathInfo = parseIssueHref(refIssue.getAttribute('href')!);
+  if (!issuePathInfo.ownerName) return;
+
+  const el = document.createElement('div');
+  const onShowAsync = async () => {
+    const {default: ContextPopup} = await import('../components/ContextPopup.vue');
+    const view = createApp(ContextPopup, {
+      // backend: GetIssueInfo
+      loadIssueInfoUrl: `${window.config.appSubUrl}/${issuePathInfo.ownerName}/${issuePathInfo.repoName}/issues/${issuePathInfo.indexString}/info`,
+    });
+    view.mount(el);
+  };
+  const tippy = createTippy(refIssue, {
+    theme: 'default',
+    content: el,
+    trigger: 'mouseenter focus',
+    placement: 'top-start',
+    interactive: true,
+    role: 'dialog',
+    interactiveBorder: 5,
+    // onHide() { return false }, // help to keep the popup and debug the layout
+    onShow: () => { onShowAsync() },
+  });
+  tippy.show();
+}

web_src/js/modules/errors.ts

@@ -49,17 +49,6 @@ export function isGiteaError(filename: string, stack: string): boolean {
   return true;
 }
 
-// Detect whether an error originated from Gitea's own scripts, not from
-// browser extensions or other external scripts.
-const extensionRe = /(chrome|moz|safari(-web)?)-extension:\/\//;
-export function isGiteaError(filename: string, stack: string): boolean {
-  if (extensionRe.test(filename) || extensionRe.test(stack)) return false;
-  const assetBaseUrl = new URL(`${window.config.assetUrlPrefix}/`, window.location.origin).href;
-  if (filename && !filename.startsWith(assetBaseUrl) && !filename.startsWith(window.location.origin)) return false;
-  if (stack && !stack.includes(assetBaseUrl)) return false;
-  return true;
-}
-
 export function processWindowErrorEvent({error, reason, message, type, filename, lineno, colno}: ErrorEvent & PromiseRejectionEvent) {
   const err = error ?? reason;
   // `error` and `reason` are not guaranteed to be errors. If the value is falsy, it is likely a