Add local tag server check, archive on delete, and first-run pin reminder

- Local tag is now clickable - checks if document exists on server by ID
  or filename, and re-links if found
- Delete from server now archives the proxy instead of removing it,
  making it a local-only document that can be re-uploaded
- Added first-run pin reminder banner to help users pin the extension
- Added issue report modal with context sections (extension info, browser
  info, document status, recent errors) and copy to clipboard as Markdown
- Added clearServerFields and attachServerDocument functions to pdf-queue
- Improved local tag styling with hover states and visual feedback

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/background/service-worker.ts

@@ -19,6 +19,8 @@ import {
   removePDF,
   cleanupOldEntries,
   syncFromServer,
+  clearServerFields,
+  attachServerDocument,
   PDFStatus,
   PDFStatusMeta
 } from '../utils/pdf-queue';
@@ -334,6 +336,44 @@ chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
     return true;
   }
 
+  // Clear server fields from a proxy (when deleted from server)
+  if (request.action === 'clearServerFields') {
+    clearServerFields(request.id).then(() => {
+      return updateBadge();
+    }).then(() => {
+      sendResponse({ success: true });
+    });
+    return true;
+  }
+
+  // Attach a server document to a local proxy
+  if (request.action === 'attachServerDocument') {
+    const { id, binectDocumentId, binectStatusCode, binectStatusText, price, recipientAddress, errorMessage } = request as {
+      id: string;
+      binectDocumentId: number;
+      binectStatusCode: number;
+      binectStatusText: string;
+      price?: number;
+      recipientAddress?: string;
+      errorMessage?: string;
+    };
+
+    attachServerDocument(id, binectDocumentId, binectStatusCode, binectStatusText, price, recipientAddress, errorMessage)
+      .then(() => {
+        return updateBadge();
+      })
+      .then(() => {
+        sendResponse({ success: true });
+      })
+      .catch(error => {
+        sendResponse({
+          success: false,
+          error: error instanceof Error ? error.message : 'Failed to attach document'
+        });
+      });
+    return true;
+  }
+
   // Legacy handlers for backward compatibility
   if (request.action === 'getLastPDF') {
     getPendingPDFs().then(entries => {