fix: resolve video download CORS via host_permissions, unify records in activities.json, and add exporter_job_info.json

dashboard/dashboard.js

@@ -12,6 +12,7 @@ const state = {
   isCancelled: false,
   activities: [],
   mediaQueue: [],
+  executionLogs: [],
   stats: {
     activitiesCount: 0,
     mediaTotal: 0,
@@ -79,10 +80,19 @@ function initDOMElements() {
 }
 
 function log(message, type = 'info') {
+  const timestamp = new Date().toISOString();
+  const timeFormatted = new Date().toLocaleTimeString();
+  
+  state.executionLogs.push({
+    timestamp,
+    time: timeFormatted,
+    level: type,
+    message: message
+  });
+
   const line = document.createElement('div');
   line.className = `log-line ${type}`;
-  const timestamp = new Date().toLocaleTimeString();
-  line.textContent = `[${timestamp}] ${message}`;
+  line.textContent = `[${timeFormatted}] ${message}`;
   el.terminalLog.appendChild(line);
   el.terminalLog.scrollTop = el.terminalLog.scrollHeight;
 }
@@ -970,14 +980,16 @@ async function downloadAllMediaFiles() {
 
 async function fetchMediaBlob(url) {
   let retries = 0;
-  while (retries < 3) {
+  const maxRetries = 3;
+  while (retries < maxRetries) {
     try {
-      const res = await fetch(url, { credentials: 'omit' });
-      if (!res.ok) throw new Error(`HTTP ${res.status}`);
+      const res = await fetch(url, { method: 'GET' });
+      if (!res.ok) throw new Error(`HTTP ${res.status} ${res.statusText}`);
       return await res.blob();
     } catch (err) {
       retries++;
-      if (retries >= 3) throw err;
+      if (retries >= maxRetries) throw err;
+      log(`Retrying media download in ${retries}s (${err.message})...`, 'warn');
       await sleep(1000 * retries);
     }
   }
@@ -1007,29 +1019,54 @@ async function buildAndDownloadZip(studentProfile) {
     }
   }
 
-  // 2. Add JSON Manifest
+  // 2. Single Source of Truth for Data Records: activities.json
   if (el.fmtJson.checked) {
-    const manifestData = {
+    const exportData = {
       export_date: new Date().toISOString(),
       student: studentProfile,
       total_activities: state.activities.length,
       activities: state.activities
     };
-    rootFolder.file('manifest.json', JSON.stringify(manifestData, null, 2));
-
-    const rawList = state.activities.map(a => a.raw).filter(Boolean);
-    if (rawList.length > 0) {
-      rootFolder.file('raw_activities.json', JSON.stringify(rawList, null, 2));
-    }
+    rootFolder.file('activities.json', JSON.stringify(exportData, null, 2));
   }
 
-  // 3. Add CSV Spreadsheet
+  // 3. Exporter Job Information & Debug Logs: exporter_job_info.json
+  const jobInfo = {
+    job_id: `bw_export_${Date.now()}`,
+    export_date: new Date().toISOString(),
+    exporter_version: chrome.runtime?.getManifest?.()?.version || '1.0.0',
+    browser_environment: {
+      user_agent: navigator.userAgent,
+      platform: navigator.platform,
+      language: navigator.language,
+      screen_resolution: `${window.screen?.width || 0}x${window.screen?.height || 0}`,
+      extension_id: chrome.runtime?.id || null
+    },
+    student: {
+      id: state.selectedStudentId,
+      name: `${studentProfile.first_name || ''} ${studentProfile.last_name || ''}`.trim(),
+      school: studentProfile.school_name || null
+    },
+    statistics: {
+      total_activities_scraped: state.activities.length,
+      media_total: state.stats.mediaTotal,
+      photos_downloaded: state.mediaQueue.filter(m => !m.isVideo && m.status === 'done').length,
+      videos_downloaded: state.mediaQueue.filter(m => m.isVideo && m.status === 'done').length,
+      media_failed: state.stats.mediaFailed,
+      total_bytes_downloaded: state.stats.bytesDownloaded,
+      retry_count: state.stats.retryCount
+    },
+    execution_logs: state.executionLogs
+  };
+  rootFolder.file('exporter_job_info.json', JSON.stringify(jobInfo, null, 2));
+
+  // 4. Add CSV Spreadsheet
   if (el.fmtCsv.checked) {
     const csvContent = generateCSV(state.activities);
     rootFolder.file('activities.csv', csvContent);
   }
 
-  // 4. Add Standalone Interactive Offline Viewer
+  // 5. Add Standalone Interactive Offline Viewer
   if (el.fmtViewer.checked) {
     try {
       const templateRes = await fetch(chrome.runtime.getURL('dashboard/viewer_template.html'));