Fix scan to show all downloaded videos, not just transcribed ones

The scan now discovers videos from the manifest (all downloaded) in
addition to the captions directory. Videos without captions appear
with a "(no caption)" badge so the user knows to transcribe first.

Previously only transcribed videos (with a caption JSON) were shown,
so newly downloaded videos were invisible in the matching UI.

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

Author: nodeeeeee

electron/main.js

@@ -791,19 +791,45 @@ function registerIpc() {
     const alignDir  = path.join(base, 'alignment');
     const exts      = new Set(['.pdf', '.pptx', '.ppt', '.docx', '.doc']);
 
-    // Captions
+    // Videos: discover from manifest (all downloaded) + captions dir
+    // A video should appear as soon as it's downloaded, not only after transcription.
     let captions = [];
+    const seenStems = new Set();
+
+    // Source 1: manifest — all downloaded videos for this course
+    const mf = path.join(DATA_DIR, 'manifest.json');
+    if (fs.existsSync(mf)) {
+      try {
+        const manifest = JSON.parse(fs.readFileSync(mf, 'utf8'));
+        for (const [, entry] of Object.entries(manifest)) {
+          if (entry.status !== 'done' || !entry.path) continue;
+          // Check video belongs to this course
+          const vidPath = entry.path;
+          if (!vidPath.includes(path.sep + String(cid) + path.sep) &&
+              !vidPath.includes('/' + String(cid) + '/')) continue;
+          const stem = path.basename(vidPath, path.extname(vidPath));
+          if (seenStems.has(stem)) continue;
+          seenStems.add(stem);
+          const hasCaptions = fs.existsSync(path.join(capDir, stem + '.json'));
+          const aligned = fs.existsSync(path.join(alignDir, stem + '.json'));
+          captions.push({ stem, filename: stem + '.json', aligned, transcribed: hasCaptions });
+        }
+      } catch {}
+    }
+
+    // Source 2: captions dir — pick up any transcribed videos not in manifest
     if (fs.existsSync(capDir)) {
-      captions = fs.readdirSync(capDir)
-        .filter(f => f.endsWith('.json'))
-        .sort()
-        .map(f => {
-          const stem = f.replace(/\.json$/, '');
-          const aligned = fs.existsSync(path.join(alignDir, f));
-          return { stem, filename: f, aligned };
-        });
+      for (const f of fs.readdirSync(capDir).filter(f => f.endsWith('.json')).sort()) {
+        const stem = f.replace(/\.json$/, '');
+        if (seenStems.has(stem)) continue;
+        seenStems.add(stem);
+        const aligned = fs.existsSync(path.join(alignDir, f));
+        captions.push({ stem, filename: f, aligned, transcribed: true });
+      }
     }
 
+    captions.sort((a, b) => a.stem.localeCompare(b.stem));
+
     // Slides (recursive)
     const slides = [];
     function walkDir(dir, rel) {

electron/renderer/app.js

@@ -723,10 +723,15 @@ function _alignRebuildRows() {
         ${actionBtn}</div>`;
     });
 
+    // Transcription badge
+    const transBadge = row.transcribed === false
+      ? '<span style="font-size:9px;color:var(--c-warn);opacity:0.8;margin-left:4px" title="Not yet transcribed">(no caption)</span>'
+      : '';
+
     html += `<div style="display:flex;align-items:flex-start;gap:6px;padding:6px 0;border-bottom:1px solid rgba(255,255,255,0.06)">
       <button class="icon-btn" title="Remove video" data-action="remove" data-row="${ri}" style="color:var(--c-error);font-size:14px">×</button>
       <span style="width:14px;padding-top:4px">${statusIcon}</span>
-      <span style="width:220px;padding-top:4px;font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap" title="${esc(row.title)}">${esc(row.title)}</span>
+      <span style="width:220px;padding-top:4px;font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap" title="${esc(row.title)}">${esc(row.title)}${transBadge}</span>
       <span style="padding-top:4px;opacity:0.3">→</span>
       <div style="flex:1">${slidesHtml}</div>
     </div>`;
@@ -1470,7 +1475,7 @@ async function attachPageHandlers() {
           const suggested = _alignAutoSuggest(cap.stem);
           initSlides = suggested !== '(none)' ? [suggested] : ['(none)'];
         }
-        return { stem: cap.stem, title, aligned: cap.aligned, slides: initSlides };
+        return { stem: cap.stem, title, aligned: cap.aligned, transcribed: cap.transcribed, slides: initSlides };
       });
 
       _alignRebuildRows();