fix: mobile tags pills show all active tags regardless of item count

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

frontend-v2/src/lib/pages/brain/AtelierBrainPage.svelte

@@ -452,10 +452,9 @@
             </button>
           {/each}
           <span class="pill-separator"></span>
-          {#each sidebarTags.filter(t => t.is_active && t.item_count > 0) as tag}
+          {#each sidebarTags.filter(t => t.is_active) as tag}
             <button class="pill pill-tag" class:active={activeTag === tag.name} onclick={() => { activeTag = tag.name; activeTagId = tag.id; activeFolder = null; activeFolderId = null; loadItems(); }}>
               #{tag.name}
-              <span class="pill-count">{tag.item_count}</span>
             </button>
           {/each}
         </div>

frontend-v2/src/lib/pages/reader/AtelierReaderPage.svelte

@@ -27,6 +27,7 @@
   let autoScrollSpeed = $state(1.5);
   let articleListEl: HTMLDivElement;
   let scrollRAF: number | null = null;
+  let lastScrollTs = 0;
   let loading = $state(true);
   let loadingMore = $state(false);
   let hasMore = $state(true);
@@ -315,22 +316,31 @@
     if (scrollRAF) cancelAnimationFrame(scrollRAF);
     if (!usesPageScroll() && !articleListEl) return;
     autoScrollActive = true;
-    function step() {
+    lastScrollTs = 0;
+    function step(timestamp: number) {
       if (!autoScrollActive) return;
+      const dt = lastScrollTs ? Math.min(34, timestamp - lastScrollTs) : 16;
+      lastScrollTs = timestamp;
+      const pxPerSecond = 28 * autoScrollSpeed;
+      const delta = pxPerSecond * (dt / 1000);
 
       if (usesPageScroll()) {
-        const nextY = window.scrollY + autoScrollSpeed;
-        const maxY = Math.max(0, document.documentElement.scrollHeight - window.innerHeight);
-        window.scrollTo({ top: Math.min(nextY, maxY), behavior: 'auto' });
-        if (nextY >= maxY) {
+        const scroller = document.scrollingElement;
+        if (!scroller) return;
+        const nextY = scroller.scrollTop + delta;
+        const maxY = Math.max(0, scroller.scrollHeight - window.innerHeight);
+        scroller.scrollTop = Math.min(nextY, maxY);
+        checkScrolledCards();
+        if (nextY >= maxY - 1) {
           stopAutoScroll();
           return;
         }
       } else {
         if (!articleListEl) return;
-        articleListEl.scrollTop += autoScrollSpeed;
+        articleListEl.scrollTop += delta;
         const maxScroll = articleListEl.scrollHeight - articleListEl.clientHeight;
-        if (articleListEl.scrollTop >= maxScroll) {
+        checkScrolledCards();
+        if (articleListEl.scrollTop >= maxScroll - 1) {
           stopAutoScroll();
           return;
         }
@@ -342,6 +352,7 @@
   }
   function stopAutoScroll() {
     autoScrollActive = false;
+    lastScrollTs = 0;
     if (scrollRAF) { cancelAnimationFrame(scrollRAF); scrollRAF = null; }
   }
   function toggleAutoScroll() {
@@ -366,6 +377,7 @@
   let scrollCheckTimer: ReturnType<typeof setTimeout> | null = null;
 
   function handleListScroll() {
+    if (usesPageScroll()) return;
     // Throttle: only check every 400ms
     if (scrollCheckTimer) return;
     scrollCheckTimer = setTimeout(() => {
@@ -374,21 +386,40 @@
     }, 400);
   }
 
+  function handleViewportScroll() {
+    if (!usesPageScroll()) return;
+    if (scrollCheckTimer) return;
+    scrollCheckTimer = setTimeout(() => {
+      scrollCheckTimer = null;
+      checkScrolledCards();
+    }, 240);
+  }
+
   function checkScrolledCards() {
     if (!articleListEl) return;
 
-    // Infinite scroll — load more when near bottom
-    const { scrollTop, scrollHeight, clientHeight } = articleListEl;
-    if (hasMore && !loadingMore && scrollHeight - scrollTop - clientHeight < 300) {
-      loadEntries(true);
+    const cards = articleListEl.querySelectorAll('[data-entry-id]');
+    if (usesPageScroll()) {
+      const pageBottom = window.scrollY + window.innerHeight;
+      const loadThreshold = document.documentElement.scrollHeight - 500;
+      if (hasMore && !loadingMore && pageBottom >= loadThreshold) {
+        loadEntries(true);
+      }
+    } else {
+      const { scrollTop, scrollHeight, clientHeight } = articleListEl;
+      if (hasMore && !loadingMore && scrollHeight - scrollTop - clientHeight < 300) {
+        loadEntries(true);
+      }
     }
 
-    const listTop = articleListEl.getBoundingClientRect().top;
-    const cards = articleListEl.querySelectorAll('[data-entry-id]');
     let newlyRead = 0;
 
     cards.forEach(card => {
-      if (card.getBoundingClientRect().bottom < listTop + 20) {
+      const rect = card.getBoundingClientRect();
+      const passedThreshold = usesPageScroll()
+        ? rect.bottom < 84
+        : rect.bottom < articleListEl.getBoundingClientRect().top + 20;
+      if (passedThreshold) {
         const id = Number(card.getAttribute('data-entry-id'));
         if (!id) return;
         const article = articles.find(a => a.id === id);
@@ -422,16 +453,17 @@
   }
 
   // ── Init ──
-  onMount(() => {
+onMount(() => {
     loadSidebar();
     loadEntries();
     return () => {
       if (flushTimer) clearTimeout(flushTimer);
+      if (scrollCheckTimer) clearTimeout(scrollCheckTimer);
     };
   });
 </script>
 
-<svelte:window onkeydown={handleKeydown} />
+<svelte:window onkeydown={handleKeydown} onscroll={handleViewportScroll} />
 
 <div class="reader-layout">