fix: proxy support for transcript download, scroll-based mark-read, enable agent worker

.gitignore

@@ -23,3 +23,4 @@ token.pickle
 config/client_secret.json
 config/token.pickle
 backend/sync_rotation.json
+._*

backend/summarizer.py

@@ -44,6 +44,10 @@ for p in [os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__)
 def download_transcript(video_id: str) -> str:
     try:
         session = requests.Session()
+        # Respect HTTP_PROXY/HTTPS_PROXY env vars
+        proxy = proxy_from_env()
+        if proxy:
+            session.proxies = {"http": proxy, "https": proxy}
         session.headers.update({
             "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36",
             "Accept-Language": "en-US,en;q=0.9"

frontend/src/routes/YoutubeDashboard.svelte

@@ -225,21 +225,33 @@
 
   $effect(() => { if (activeTab) loadVideos(); });
   $effect(() => {
-    // Mark previous video as read when navigating away
+    // Scroll to top when switching videos
     if (selectedVideo && summaryPanel) {
       tick().then(() => summaryPanel.scrollTop = 0);
     }
     const prevId = prevSelectedId;
     prevSelectedId = selectedVideo?.video_id || null;
-
-    if (prevId && prevId !== selectedVideo?.video_id && activeTab === 'pending') {
-      // Look up the previous video to check it had a valid summary
-      const prevVideo = videos.find(v => v.video_id === prevId);
-      if (prevVideo && prevVideo.summary && !prevVideo.summary.includes('Error') && !prevVideo.summary.includes('📺 Short clip')) {
-        updateStatus(prevId, 'read', true);
-      }
-    }
+    // NOTE: auto-mark-read is now handled by scroll-to-bottom detection (see below)
+    // and explicit user actions (r/Enter key or Read button).
   });
+
+  // Scroll-based auto-mark-read: mark video as read when user scrolls to bottom of summary
+  let scrollReadTimer = $state(null);
+  function handleSummaryScroll() {
+    if (!summaryPanel || !selectedVideo || activeTab !== 'pending') return;
+    const threshold = 100; // px from bottom
+    const atBottom = (summaryPanel.scrollHeight - summaryPanel.scrollTop - summaryPanel.clientHeight) < threshold;
+    if (atBottom) {
+      // Debounce to avoid rapid-fire updates
+      if (scrollReadTimer) clearTimeout(scrollReadTimer);
+      scrollReadTimer = setTimeout(() => {
+        const sv = selectedVideo;
+        if (sv && sv.summary && !sv.summary.includes('Error') && !sv.summary.includes('📺 Short clip')) {
+          updateStatus(sv.video_id, 'read', true);
+        }
+      }, 500);
+    }
+  }
   $effect(() => {
     if (activeTab === 'agent') loadAgentQueue();
   });
@@ -545,7 +557,7 @@
     </aside>
 
     <!-- Right: summary panel -->
-    <main bind:this={summaryPanel} id="summary-panel" class="flex-1 overflow-y-auto" style="background:var(--bg-primary);min-height:0">
+    <main bind:this={summaryPanel} onscroll={handleSummaryScroll} id="summary-panel" class="flex-1 overflow-y-auto" style="background:var(--bg-primary);min-height:0">
       {#if activeTab === '🤖 Agent'}
         <div class="p-6 max-w-3xl mx-auto">
           <h2 class="text-sm font-black tracking-wider mb-4" style="color:var(--accent)">🤖 Agent Queue</h2>