diff --git a/packages/webui/src/components/debug/file-source.tsx b/packages/webui/src/components/debug/file-source.tsx
index 4cbc3134..de91d0e8 100644
--- a/packages/webui/src/components/debug/file-source.tsx
+++ b/packages/webui/src/components/debug/file-source.tsx
@@ -4,7 +4,7 @@
 // server, or a browser upload that we stream to a server temp path (and then
 // feed that path to the action). Upload progress flows through the app-level
 // task registry so it survives tab switches.
-import { useRef, useState } from 'react';
+import { useId, useState } from 'react';
 import { FileUp, Link2, Loader2, ServerCog, X } from 'lucide-react';
 import { Input } from '@/components/ui/input';
 import { useApi } from '@/lib/api';
@@ -15,9 +15,9 @@ import type { FieldRole } from '@/types';
 type Mode = 'url' | 'server' | 'upload';
 
 const ACCEPT: Partial<Record<FieldRole, string>> = {
-  image: 'image/*',
-  record: 'audio/*',
-  video: 'video/*',
+  image: 'image/*,.png,.jpg,.jpeg,.gif,.webp,.bmp,.heic,.heif',
+  record: 'audio/*,.silk,.amr,.mp3,.wav,.m4a,.ogg',
+  video: 'video/*,.mp4,.mov,.mkv,.webm',
 };
 
 function Seg({ active, onClick, icon, label }: { active: boolean; onClick: () => void; icon: React.ReactNode; label: string }) {
@@ -45,7 +45,7 @@ export function FileSource({ value, onChange, role, placeholder }: {
   const [uploading, setUploading] = useState(false);
   const [uploadName, setUploadName] = useState<string | null>(null);
   const [uploadErr, setUploadErr] = useState<string | null>(null);
-  const inputRef = useRef<HTMLInputElement>(null);
+  const inputId = useId();
   const accept = role ? ACCEPT[role] : undefined;
 
   const doUpload = async (file: File) => {
@@ -93,20 +93,25 @@ export function FileSource({ value, onChange, role, placeholder }: {
       {mode === 'upload' && (
         <div className="flex flex-col gap-1.5">
           <input
-            ref={inputRef}
+            id={inputId}
             type="file"
             accept={accept}
-            className="hidden"
+            className="sr-only"
             onChange={(e) => { const f = e.target.files?.[0]; if (f) void doUpload(f); e.target.value = ''; }}
           />
-          <button
-            type="button"
-            disabled={uploading}
-            onClick={() => inputRef.current?.click()}
-            className={cn('flex items-center justify-center gap-2 rounded-xl border border-dashed border-border/70 px-3 py-3 text-sm text-muted-foreground transition-colors hover:border-primary/50 hover:text-foreground disabled:opacity-60')}
+          <label
+            htmlFor={inputId}
+            onDragOver={(e) => { e.preventDefault(); e.stopPropagation(); }}
+            onDrop={(e) => {
+              e.preventDefault();
+              e.stopPropagation();
+              const file = e.dataTransfer.files[0];
+              if (file && !uploading) void doUpload(file);
+            }}
+            className={cn('flex items-center justify-center gap-2 rounded-xl border border-dashed border-border/70 px-3 py-3 text-sm text-muted-foreground transition-colors hover:border-primary/50 hover:text-foreground', uploading && 'pointer-events-none opacity-60')}
           >
-            {uploading ? <><Loader2 className="h-4 w-4 animate-spin" /> 上传中…</> : <><FileUp className="h-4 w-4" /> 选择文件上传到服务器</>}
-          </button>
+            {uploading ? <><Loader2 className="h-4 w-4 animate-spin" /> 上传中…</> : <><FileUp className="h-4 w-4" /> 选择或拖入文件上传到服务器</>}
+          </label>
           {value && uploadName && !uploading && (
             <div className="flex items-center gap-2 rounded-lg bg-muted/40 px-2.5 py-1.5 text-meta">
               <span className="truncate text-muted-foreground">已上传:{uploadName}</span>
diff --git a/packages/webui/src/components/debug/message-builder.tsx b/packages/webui/src/components/debug/message-builder.tsx
index 43cd37f5..48f7b37a 100644
--- a/packages/webui/src/components/debug/message-builder.tsx
+++ b/packages/webui/src/components/debug/message-builder.tsx
@@ -205,7 +205,12 @@ export function MessageBuilder({ segments, onChange, uin, groupId, depth = 0, mo
                 // stopPropagation keeps a nested (forward-node) builder's drag
                 // from reaching the parent row; onDragEnd lives here because the
                 // grip — not the row — is now the drag source.
-                onDragStart={(e) => { e.stopPropagation(); setDragFrom(i); }}
+                onDragStart={(e) => {
+                  e.stopPropagation();
+                  e.dataTransfer.setData('text/plain', String(i));
+                  e.dataTransfer.effectAllowed = 'move';
+                  setDragFrom(i);
+                }}
                 onDragEnd={() => setDragFrom(null)}
                 title="拖动此处排序" aria-label="拖动排序"
                 className="flex shrink-0 cursor-grab rounded-md p-0.5 text-muted-foreground/50 transition-colors hover:bg-muted hover:text-foreground active:cursor-grabbing"
diff --git a/packages/webui/src/components/layout/sidebar.tsx b/packages/webui/src/components/layout/sidebar.tsx
index ade76fff..8b520356 100644
--- a/packages/webui/src/components/layout/sidebar.tsx
+++ b/packages/webui/src/components/layout/sidebar.tsx
@@ -1,5 +1,5 @@
 import { Bug, Check, Eye, EyeOff, GripVertical, LayoutDashboard, Lock, Pin, PinOff, PlugZap, Settings, Sparkles, SlidersHorizontal, Terminal } from 'lucide-react';
-import { motion, Reorder } from 'motion/react';
+import { motion, Reorder, useDragControls } from 'motion/react';
 import { Link, useRouterState } from '@tanstack/react-router';
 import { ScrollArea } from '@/components/ui/scroll-area';
 import { cn } from '@/lib/utils';
@@ -9,6 +9,7 @@ import { useTheme } from '@/contexts/ThemeContext';
 import { reconcileLayoutItems, useLayout } from '@/contexts/LayoutContext';
 import { useMediaQuery } from '@/hooks/use-media-query';
 import type { AppPath } from '@/router';
+import type { UiLayoutItem } from '@/types';
 
 export interface NavItem {
   to: AppPath;
@@ -32,6 +33,58 @@ export const NAV_ITEMS: NavItem[] = [
 //   '/settings'— account + appearance.
 export const PINNED_NAV: AppPath[] = ['/', '/settings'];
 
+function NavReorderRow({
+  item,
+  meta,
+  onToggle,
+}: {
+  item: UiLayoutItem;
+  meta: NavItem;
+  onToggle: (id: string) => void;
+}) {
+  const controls = useDragControls();
+  const Icon = meta.icon;
+  const itemPinned = (PINNED_NAV as string[]).includes(item.id);
+  return (
+    <Reorder.Item
+      value={item.id}
+      dragListener={false}
+      dragControls={controls}
+      className={cn(
+        'flex select-none items-center gap-2 rounded-lg bg-sidebar-accent/40 px-2 py-2',
+        !item.visible && 'opacity-50',
+      )}
+    >
+      <button
+        type="button"
+        aria-label="拖动排序"
+        className="inline-flex size-8 shrink-0 touch-none items-center justify-center text-muted-foreground"
+        onPointerDown={(e) => controls.start(e)}
+      >
+        <GripVertical className="size-3.5" />
+      </button>
+      <Icon className="size-4 shrink-0 text-muted-foreground" />
+      <span className="min-w-0 flex-1 truncate text-sm">{meta.label}</span>
+      {itemPinned ? (
+        <span title="必选项，不可隐藏" className="inline-flex size-8 items-center justify-center text-muted-foreground/50">
+          <Lock className="size-3.5" />
+        </span>
+      ) : (
+        <button
+          type="button"
+          onClick={() => onToggle(item.id)}
+          onPointerDown={(e) => e.stopPropagation()}
+          title={item.visible ? '隐藏' : '显示'}
+          aria-label={item.visible ? '隐藏' : '显示'}
+          className="inline-flex size-8 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-sidebar-accent/50 hover:text-foreground cursor-pointer"
+        >
+          {item.visible ? <Eye className="size-3.5" /> : <EyeOff className="size-3.5" />}
+        </button>
+      )}
+    </Reorder.Item>
+  );
+}
+
 interface SidebarProps {
   collapsed?: boolean;
   onItemClick?: () => void;
@@ -98,36 +151,13 @@ export function Sidebar({ collapsed = false, onItemClick }: SidebarProps) {
               {reconciled.map((item) => {
                 const meta = NAV_ITEMS.find((n) => n.to === item.id);
                 if (!meta) return null;
-                const Icon = meta.icon;
-                const itemPinned = (PINNED_NAV as string[]).includes(item.id);
                 return (
-                  <Reorder.Item
+                  <NavReorderRow
                     key={item.id}
-                    value={item.id}
-                    className={cn(
-                      'flex select-none items-center gap-2 rounded-lg bg-sidebar-accent/40 px-2 py-2 cursor-grab active:cursor-grabbing',
-                      !item.visible && 'opacity-50',
-                    )}
-                  >
-                    <GripVertical className="size-3.5 shrink-0 text-muted-foreground" />
-                    <Icon className="size-4 shrink-0 text-muted-foreground" />
-                    <span className="min-w-0 flex-1 truncate text-sm">{meta.label}</span>
-                    {itemPinned ? (
-                      <span title="必选项，不可隐藏" className="inline-flex size-7 items-center justify-center text-muted-foreground/50">
-                        <Lock className="size-3.5" />
-                      </span>
-                    ) : (
-                      <button
-                        type="button"
-                        onClick={() => toggleNav(item.id)}
-                        title={item.visible ? '隐藏' : '显示'}
-                        aria-label={item.visible ? '隐藏' : '显示'}
-                        className="inline-flex size-7 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-sidebar-accent/50 hover:text-foreground cursor-pointer"
-                      >
-                        {item.visible ? <Eye className="size-3.5" /> : <EyeOff className="size-3.5" />}
-                      </button>
-                    )}
-                  </Reorder.Item>
+                    item={item}
+                    meta={meta}
+                    onToggle={toggleNav}
+                  />
                 );
               })}
             </Reorder.Group>
diff --git a/packages/webui/src/components/pages/dashboard-grid.tsx b/packages/webui/src/components/pages/dashboard-grid.tsx
index 96e3e479..eb857127 100644
--- a/packages/webui/src/components/pages/dashboard-grid.tsx
+++ b/packages/webui/src/components/pages/dashboard-grid.tsx
@@ -78,6 +78,7 @@ export function DashboardGrid({
         float: true, // free placement — items stay where dropped (no auto-compact)
         disableDrag: !editing,
         disableResize: !editing,
+        handle: '.grid-drag-handle',
         // Drag a card onto the gallery to remove it (edit mode only). The whole
         // card is the drag target; the corner icons are just hints.
         removable: editing && removableSelector ? removableSelector : false,
@@ -150,30 +151,28 @@ export function DashboardGrid({
           <div className="relative h-full w-full">
             {editing && (
               <>
-                {/* Subtle drag hint — a small square, not a bar. The whole card
-                    is draggable; this just signals it (pointer-events-none so
-                    the drag passes through to gridstack). */}
-                <span
-                  aria-hidden
+                <button
+                  type="button"
                   title="拖动卡片调整位置 · 拖回右侧部件库可移除"
-                  className="pointer-events-none absolute left-1.5 top-1.5 z-20 inline-flex size-6 items-center justify-center rounded-md bg-background/70 text-muted-foreground opacity-50 backdrop-blur-sm"
+                  aria-label="拖动调整位置"
+                  className="grid-drag-handle pointer-events-auto absolute left-1.5 top-1.5 z-20 inline-flex size-11 items-center justify-center rounded-md bg-background/80 text-muted-foreground touch-none outline-none hover:text-foreground focus-visible:ring-[3px] focus-visible:ring-ring/40"
                 >
                   <GripVertical className="size-3.5" />
-                </span>
+                </button>
                 {configurableIds.has(b.id) && (
                   <button
                     type="button"
                     onClick={() => onConfigOpen(b.id)}
                     title="设置"
                     aria-label="设置"
-                    className="pointer-events-auto absolute right-1.5 top-1.5 z-20 inline-flex size-6 items-center justify-center rounded-md bg-background/70 text-muted-foreground opacity-60 backdrop-blur-sm transition-[color,opacity,box-shadow] duration-150 ease-out outline-none hover:opacity-100 hover:text-foreground focus-visible:opacity-100 focus-visible:ring-[3px] focus-visible:ring-ring/40 cursor-pointer"
+                    className="pointer-events-auto absolute right-1.5 top-1.5 z-20 inline-flex size-11 items-center justify-center rounded-md bg-background/80 text-muted-foreground transition-[color,box-shadow] duration-150 ease-out outline-none hover:text-foreground focus-visible:ring-[3px] focus-visible:ring-ring/40 cursor-pointer"
                   >
                     <Settings2 className="size-3.5" />
                   </button>
                 )}
               </>
             )}
-            <div className={cn('h-full w-full overflow-auto rounded-xl', editing && 'pointer-events-none select-none')}>
+            <div className={cn('h-full w-full overflow-auto overscroll-contain rounded-xl', editing && 'pointer-events-none select-none')}>
               {renderWidget(b)}
             </div>
           </div>,
diff --git a/packages/webui/src/components/pages/overview-page.tsx b/packages/webui/src/components/pages/overview-page.tsx
index 99453579..c0639b3b 100644
--- a/packages/webui/src/components/pages/overview-page.tsx
+++ b/packages/webui/src/components/pages/overview-page.tsx
@@ -1,5 +1,5 @@
 import { useEffect, useId, useMemo, useState, type ReactNode } from 'react';
-import { motion, Reorder } from 'motion/react';
+import { motion, Reorder, useDragControls } from 'motion/react';
 import { Link } from '@tanstack/react-router';
 import {
   Activity, ArrowRight, Bell, Cable, Check, Cpu, ExternalLink, Eye, EyeOff, GripVertical,
@@ -147,7 +147,7 @@ export function OverviewPage() {
       {editing && (
         <p className="rounded-xl border border-primary/20 bg-primary/5 px-3.5 py-2.5 text-xs leading-relaxed text-muted-foreground">
           {isWide
-            ? '拖动卡片移动位置、拖右下角缩放，右上齿轮改设置；把卡片拖回右侧「部件库」即可移除，从部件库拖到画布即可添加。左侧导航也可在编辑态拖动排序。'
+            ? '拖动卡片移动位置、拖右下角缩放，右上齿轮改设置；把卡片拖回右侧「部件库」即可移除，从部件库点加号或拖到画布即可添加。左侧导航也可在编辑态拖动手柄排序。'
             : '拖动手柄调整卡片顺序，眼睛图标显隐，齿轮改设置。手机为单列布局，与桌面网格各自独立。'}
         </p>
       )}
@@ -198,7 +198,7 @@ export function OverviewPage() {
               />
             )}
           </div>
-          {editing && <WidgetGallery hidden={hiddenBlocks} />}
+          {editing && <WidgetGallery hidden={hiddenBlocks} onAdd={addWidget} />}
         </div>
       ) : (
         <MobileOverview
@@ -243,6 +243,61 @@ function EmptyLayout({ onReset }: { onReset: () => void }) {
   );
 }
 
+function MobileLayoutRow({
+  item,
+  onToggle,
+  onConfigOpen,
+}: {
+  item: UiLayoutItem;
+  onToggle: (id: string) => void;
+  onConfigOpen: (id: string) => void;
+}) {
+  const controls = useDragControls();
+  return (
+    <Reorder.Item
+      value={item.id}
+      dragListener={false}
+      dragControls={controls}
+      className={cn(
+        'flex select-none items-center gap-2 rounded-xl border bg-card/60 px-3 py-2.5',
+        !item.visible && 'opacity-50',
+      )}
+    >
+      <button
+        type="button"
+        aria-label="拖动排序"
+        className="inline-flex size-11 shrink-0 touch-none items-center justify-center text-muted-foreground"
+        onPointerDown={(e) => controls.start(e)}
+      >
+        <GripVertical className="size-4" />
+      </button>
+      <span className="min-w-0 flex-1 truncate text-sm font-medium">{widgetLabel(item.id)}</span>
+      {CONFIGURABLE_WIDGETS.has(item.id) && item.visible && (
+        <button
+          type="button"
+          onClick={() => onConfigOpen(item.id)}
+          onPointerDown={(e) => e.stopPropagation()}
+          title="设置"
+          aria-label="设置"
+          className="inline-flex size-11 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-accent/50 hover:text-foreground cursor-pointer"
+        >
+          <Settings2 className="size-3.5" />
+        </button>
+      )}
+      <button
+        type="button"
+        onClick={() => onToggle(item.id)}
+        onPointerDown={(e) => e.stopPropagation()}
+        title={item.visible ? '隐藏' : '显示'}
+        aria-label={item.visible ? '隐藏' : '显示'}
+        className="inline-flex size-11 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-accent/50 hover:text-foreground cursor-pointer"
+      >
+        {item.visible ? <Eye className="size-3.5" /> : <EyeOff className="size-3.5" />}
+      </button>
+    </Reorder.Item>
+  );
+}
+
 // ─────────────── mobile single-column overview ───────────────
 // Phones get a one-dimensional layout (`overviewMobile`), fully disjoint from
 // the desktop 2D grid. View mode reuses the grid renderer (drag disabled) so
@@ -262,37 +317,12 @@ function MobileOverview({
     return (
       <Reorder.Group axis="y" values={items.map((i) => i.id)} onReorder={onReorder} className="flex flex-col gap-2">
         {items.map((item) => (
-          <Reorder.Item
+          <MobileLayoutRow
             key={item.id}
-            value={item.id}
-            className={cn(
-              'flex select-none items-center gap-2 rounded-xl border bg-card/60 px-3 py-2.5 cursor-grab active:cursor-grabbing',
-              !item.visible && 'opacity-50',
-            )}
-          >
-            <GripVertical className="size-4 shrink-0 text-muted-foreground" />
-            <span className="min-w-0 flex-1 truncate text-sm font-medium">{widgetLabel(item.id)}</span>
-            {CONFIGURABLE_WIDGETS.has(item.id) && item.visible && (
-              <button
-                type="button"
-                onClick={() => onConfigOpen(item.id)}
-                title="设置"
-                aria-label="设置"
-                className="inline-flex size-7 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-accent/50 hover:text-foreground cursor-pointer"
-              >
-                <Settings2 className="size-3.5" />
-              </button>
-            )}
-            <button
-              type="button"
-              onClick={() => onToggle(item.id)}
-              title={item.visible ? '隐藏' : '显示'}
-              aria-label={item.visible ? '隐藏' : '显示'}
-              className="inline-flex size-7 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-accent/50 hover:text-foreground cursor-pointer"
-            >
-              {item.visible ? <Eye className="size-3.5" /> : <EyeOff className="size-3.5" />}
-            </button>
-          </Reorder.Item>
+            item={item}
+            onToggle={onToggle}
+            onConfigOpen={onConfigOpen}
+          />
         ))}
       </Reorder.Group>
     );
@@ -332,7 +362,7 @@ function MobileOverview({
 // tile onto the canvas adds it (HTML5 DnD); dragging a canvas card back onto
 // this panel removes it (gridstack `removable`, matched by the .widget-gallery
 // class). Edit-mode only, desktop only.
-function WidgetGallery({ hidden }: { hidden: UiLayoutItem[] }) {
+function WidgetGallery({ hidden, onAdd }: { hidden: UiLayoutItem[]; onAdd: (id: string, x: number, y: number) => void }) {
   return (
     <div className="widget-gallery w-56 shrink-0 self-stretch rounded-xl border border-dashed bg-muted/20 p-3">
       <div className="mb-1.5 flex items-center gap-1.5 px-1">
@@ -340,7 +370,7 @@ function WidgetGallery({ hidden }: { hidden: UiLayoutItem[] }) {
         <span className="text-xs font-semibold">部件库</span>
       </div>
       <p className="mb-3 px-1 text-xs leading-snug text-muted-foreground">
-        拖到左侧画布添加；把卡片拖回此处即可移除。
+        点加号或拖到左侧画布添加；把卡片拖回此处即可移除。
       </p>
       {hidden.length === 0 ? (
         <div className="rounded-lg border border-dashed px-2 py-8 text-center text-xs text-muted-foreground">
@@ -360,7 +390,15 @@ function WidgetGallery({ hidden }: { hidden: UiLayoutItem[] }) {
             >
               <GripVertical className="size-3.5 shrink-0 text-muted-foreground" />
               <span className="min-w-0 flex-1 truncate">{widgetLabel(b.id)}</span>
-              <Plus className="size-3.5 shrink-0 text-muted-foreground/60" />
+              <button
+                type="button"
+                aria-label={`添加 ${widgetLabel(b.id)}`}
+                onClick={() => onAdd(b.id, 0, 0)}
+                onPointerDown={(e) => e.stopPropagation()}
+                className="inline-flex size-8 shrink-0 items-center justify-center rounded-md text-muted-foreground/60 transition-colors hover:bg-accent/50 hover:text-foreground"
+              >
+                <Plus className="size-3.5" />
+              </button>
             </div>
           ))}
         </div>
@@ -383,7 +421,7 @@ function DropPlaceholder({ onAdd }: { onAdd: (id: string, x: number, y: number)
       className="flex min-h-60 flex-col items-center justify-center gap-3 rounded-xl border-2 border-dashed py-16 text-center text-muted-foreground"
     >
       <LayoutGrid className="size-8 opacity-40" strokeWidth={1.5} />
-      <p className="text-sm">从右侧「部件库」拖动部件到这里</p>
+      <p className="text-sm">从右侧「部件库」点加号或拖动部件到这里</p>
     </div>
   );
 }