Feat: Download Queue Move to Top/Bottom + Tooltip (#38)

src/features/downloads/components/DownloadItem.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-  import { CircleNotch, ArrowUp, ArrowDown, ArrowClockwise, X } from "phosphor-svelte";
+  import { CircleNotch, ArrowUp, ArrowDown, ArrowLineUp, ArrowLineDown, ArrowClockwise, X } from "phosphor-svelte";
   import Thumbnail from "@shared/manga/Thumbnail.svelte";
   import ContextMenu from "@shared/ui/ContextMenu.svelte";
   import type { MenuEntry } from "@shared/ui/ContextMenu.svelte";
@@ -20,18 +20,20 @@
     onRemove:           (chapterId: number) => void;
     onRetry:            (chapterId: number) => void;
     onReorder:          (chapterId: number, dir: "up" | "down") => void;
+    onReorderEdge:      (chapterId: number, edge: "top" | "bottom") => void;
     onSelect:           (chapterId: number, e: MouseEvent | { shiftKey: boolean; ctrlKey: boolean; metaKey: boolean }) => void;
-    onBatchRemove:  () => void;
-    onBatchRetry:   () => void;
-    onBatchReorder: (dir: "up" | "down") => void;
-    onClearSelect:  () => void;
+    onBatchRemove:      () => void;
+    onBatchRetry:       () => void;
+    onBatchReorder:     (dir: "up" | "down") => void;
+    onBatchReorderEdge: (edge: "top" | "bottom") => void;
+    onClearSelect:      () => void;
   }
 
   const {
     item, index, isActive, isFirst, isLast, isRemoving,
     isSelected, selectedCount, selectedErrorCount, batchWorking,
-    onRemove, onRetry, onReorder, onSelect,
-    onBatchRemove, onBatchRetry, onBatchReorder, onClearSelect,
+    onRemove, onRetry, onReorder, onReorderEdge, onSelect,
+    onBatchRemove, onBatchRetry, onBatchReorder, onBatchReorderEdge, onClearSelect,
   }: Props = $props();
 
   const manga   = $derived(item.chapter.manga);
@@ -87,6 +89,19 @@
     const entries: MenuEntry[] = [];
 
     if (inBatch) {
+      entries.push({
+        label: `Move to top (${selectedCount})`,
+        icon: ArrowLineUp,
+        onClick: () => onBatchReorderEdge("top"),
+        disabled: batchWorking,
+      });
+      entries.push({
+        label: `Move to bottom (${selectedCount})`,
+        icon: ArrowLineDown,
+        onClick: () => onBatchReorderEdge("bottom"),
+        disabled: batchWorking,
+      });
+      entries.push({ separator: true });
       entries.push({
         label: `Move up (${selectedCount})`,
         icon: ArrowUp,
@@ -127,6 +142,19 @@
         });
         entries.push({ separator: true });
       }
+      entries.push({
+        label: "Move to top",
+        icon: ArrowLineUp,
+        onClick: () => onReorderEdge(item.chapter.id, "top"),
+        disabled: isFirst || isActive,
+      });
+      entries.push({
+        label: "Move to bottom",
+        icon: ArrowLineDown,
+        onClick: () => onReorderEdge(item.chapter.id, "bottom"),
+        disabled: isLast || isActive,
+      });
+      entries.push({ separator: true });
       entries.push({
         label: "Move up",
         icon: ArrowUp,

src/features/downloads/components/DownloadQueue.svelte

@@ -4,26 +4,28 @@
   import type { DownloadQueueItem } from "@types/index";
 
   interface Props {
-    queue:        DownloadQueueItem[];
-    loading:      boolean;
-    isRunning:    boolean;
-    dequeueing:   Set<number>;
-    selected:     Set<number>;
-    batchWorking: boolean;
-    onRemove:     (chapterId: number) => void;
-    onRetry:      (chapterId: number) => void;
-    onReorder:    (chapterId: number, dir: "up" | "down") => void;
-    onSelect:     (chapterId: number, e: MouseEvent) => void;
-    onClearSelect: () => void;
-    onBatchRemove: () => void;
-    onBatchRetry:  () => void;
-    onBatchReorder: (dir: "up" | "down") => void;
+    queue:              DownloadQueueItem[];
+    loading:            boolean;
+    isRunning:          boolean;
+    dequeueing:         Set<number>;
+    selected:           Set<number>;
+    batchWorking:       boolean;
+    onRemove:           (chapterId: number) => void;
+    onRetry:            (chapterId: number) => void;
+    onReorder:          (chapterId: number, dir: "up" | "down") => void;
+    onReorderEdge:      (chapterId: number, edge: "top" | "bottom") => void;
+    onSelect:           (chapterId: number, e: MouseEvent) => void;
+    onClearSelect:      () => void;
+    onBatchRemove:      () => void;
+    onBatchRetry:       () => void;
+    onBatchReorder:     (dir: "up" | "down") => void;
+    onBatchReorderEdge: (edge: "top" | "bottom") => void;
   }
 
   const {
     queue, loading, isRunning, dequeueing, selected, batchWorking,
-    onRemove, onRetry, onReorder, onSelect, onClearSelect,
-    onBatchRemove, onBatchRetry, onBatchReorder,
+    onRemove, onRetry, onReorder, onReorderEdge, onSelect, onClearSelect,
+    onBatchRemove, onBatchRetry, onBatchReorder, onBatchReorderEdge,
   }: Props = $props();
 
   const selectedErrorCount = $derived(
@@ -39,6 +41,22 @@
   <div class="empty">Queue is empty.</div>
 {:else}
   <div class="list">
+    <div class="list-header">
+      <div class="info-wrap">
+        <button class="info-btn" tabindex="-1" aria-label="Selection help">
+          <svg width="12" height="12" viewBox="0 0 12 12" fill="none" aria-hidden="true">
+            <circle cx="6" cy="6" r="5.25" stroke="currentColor" stroke-width="1.5"/>
+            <rect x="5.25" y="5" width="1.5" height="3.5" rx="0.75" fill="currentColor"/>
+            <circle cx="6" cy="3.25" r="0.85" fill="currentColor"/>
+          </svg>
+        </button>
+        <div class="info-popover" role="tooltip">
+          <span>Click to select</span>
+          <span>Shift+click to range select</span>
+          <span>Ctrl+click to toggle</span>
+        </div>
+      </div>
+    </div>
     {#each queue as item, i (item.chapter.id)}
       <DownloadItem
         {item}
@@ -54,11 +72,13 @@
         {onRemove}
         {onRetry}
         {onReorder}
+        {onReorderEdge}
         {onSelect}
         {onClearSelect}
         {onBatchRemove}
         {onBatchRetry}
         {onBatchReorder}
+        {onBatchReorderEdge}
       />
     {/each}
   </div>
@@ -71,6 +91,59 @@
     gap: var(--sp-2);
   }
 
+  .list-header {
+    display: flex;
+    justify-content: flex-end;
+    padding: 0 var(--sp-1);
+  }
+
+  .info-wrap {
+    position: relative;
+    display: flex;
+    align-items: center;
+  }
+
+  .info-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 18px;
+    height: 18px;
+    border: none;
+    background: none;
+    padding: 0;
+    cursor: default;
+    color: var(--text-faint);
+    border-radius: var(--radius-sm);
+    transition: color var(--t-base);
+  }
+  .info-btn:hover { color: var(--text-muted); }
+
+  .info-popover {
+    position: absolute;
+    right: 0;
+    top: calc(100% + 6px);
+    background: var(--bg-overlay);
+    border: 1px solid var(--border-dim);
+    border-radius: var(--radius-md);
+    padding: var(--sp-2) var(--sp-3);
+    display: none;
+    flex-direction: column;
+    gap: 4px;
+    white-space: nowrap;
+    z-index: 50;
+    pointer-events: none;
+  }
+
+  .info-popover span {
+    font-family: var(--font-ui);
+    font-size: var(--text-2xs);
+    color: var(--text-faint);
+    letter-spacing: var(--tracking-wide);
+  }
+
+  .info-wrap:hover .info-popover { display: flex; }
+
   .empty {
     display: flex;
     align-items: center;

src/features/downloads/components/Downloads.svelte

@@ -121,11 +121,13 @@
       onRemove={(id) => downloadStore.dequeue(id)}
       onRetry={(id) => downloadStore.retryOne(id)}
       onReorder={(id, dir) => downloadStore.reorder(id, dir)}
+      onReorderEdge={(id, edge) => downloadStore.reorderToEdge(id, edge)}
       onSelect={handleSelect}
       onClearSelect={() => { downloadStore.clearSelection(); selectAnchor = null; }}
       onBatchRemove={() => downloadStore.dequeueSelected()}
       onBatchRetry={() => downloadStore.retrySelected()}
       onBatchReorder={(dir) => downloadStore.reorderSelected(dir)}
+      onBatchReorderEdge={(edge) => downloadStore.reorderSelectedToEdge(edge)}
     />
   </div>
 </div>