diff --git a/VERSION b/VERSION
index ac454c6..54d1a4f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.12.0
+0.13.0
diff --git a/web/package-lock.json b/web/package-lock.json
index a08cd35..4bb29d3 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -18,7 +18,8 @@
         "uplot": "^1.6.32"
       },
       "devDependencies": {
-        "@lucide/svelte": "^1.23.0",
+        "@internationalized/date": "^3.12.2",
+        "@lucide/svelte": "^1.25.0",
         "@sveltejs/vite-plugin-svelte": "^5.0.0",
         "@tailwindcss/vite": "^4.3.2",
         "@tsconfig/svelte": "^5.0.0",
@@ -870,7 +871,6 @@
       "integrity": "sha512-FY1Y+H64NDs+HAF6omlnWxm3mEpfgaCSWtL5l551ZZfImA+kGjPFgrnJrGjH6lfmLL0g8Z/mBu1R3kufeCp6Jw==",
       "dev": true,
       "license": "Apache-2.0",
-      "peer": true,
       "dependencies": {
         "@swc/helpers": "^0.5.0"
       }
@@ -921,9 +921,9 @@
       }
     },
     "node_modules/@lucide/svelte": {
-      "version": "1.23.0",
-      "resolved": "https://registry.npmjs.org/@lucide/svelte/-/svelte-1.23.0.tgz",
-      "integrity": "sha512-3LQbKXx9vId6Nx4E2Nu2qwgJfdmr5+CVeVJbxe5cy+HcnCRd9QVVtZXqvgBYAV1OJrPmQAf9/3gJWLCpASC/Ng==",
+      "version": "1.25.0",
+      "resolved": "https://registry.npmjs.org/@lucide/svelte/-/svelte-1.25.0.tgz",
+      "integrity": "sha512-v9m+dD68jxVnqkU3K59mG/RSRFlPGzmKCGSyMfnXcaGv9jODDQMyQkcp1CGvk3Y/cUj9v7f8rw1n//K0B53xGQ==",
       "dev": true,
       "license": "ISC",
       "peerDependencies": {
@@ -1378,7 +1378,6 @@
       "integrity": "sha512-5lSsMOTXURePglDfvuAQUqkGek9Hg2kksOYay2m0+XR++b2NWYL/4sWyuvVBIs8oKnJaxkdi9whaL/sqN13afw==",
       "dev": true,
       "license": "Apache-2.0",
-      "peer": true,
       "dependencies": {
         "tslib": "^2.8.0"
       }
diff --git a/web/package.json b/web/package.json
index 58573f6..ebaf7fa 100644
--- a/web/package.json
+++ b/web/package.json
@@ -17,7 +17,8 @@
     "test:watch": "vitest"
   },
   "devDependencies": {
-    "@lucide/svelte": "^1.23.0",
+    "@internationalized/date": "^3.12.2",
+    "@lucide/svelte": "^1.25.0",
     "@sveltejs/vite-plugin-svelte": "^5.0.0",
     "@tailwindcss/vite": "^4.3.2",
     "@tsconfig/svelte": "^5.0.0",
diff --git a/web/src/lib/components/desktop-shell/Desktop.svelte b/web/src/lib/components/desktop-shell/Desktop.svelte
index 2226bd6..e4da1cd 100644
--- a/web/src/lib/components/desktop-shell/Desktop.svelte
+++ b/web/src/lib/components/desktop-shell/Desktop.svelte
@@ -15,6 +15,7 @@
   import WindowLayer from './WindowLayer.svelte'
   import DockedLayer from './DockedLayer.svelte'
   import Taskbar from './Taskbar.svelte'
+  import * as ContextMenu from '$lib/components/ui/context-menu'
   import LayersIcon from '@lucide/svelte/icons/layers'
   import Rows3Icon from '@lucide/svelte/icons/rows-3'
   import MonitorIcon from '@lucide/svelte/icons/monitor'
@@ -22,37 +23,18 @@
   import Undo2Icon from '@lucide/svelte/icons/undo-2'
   import Redo2Icon from '@lucide/svelte/icons/redo-2'
 
-  // Clicking the bare desktop (not an icon, not a window) blurs the focused
-  // window — the familiar "click empty desktop to deselect" affordance.
-  function onSurfaceClick(e: MouseEvent) {
-    if (e.currentTarget === e.target) wm.blur()
-  }
-
-  // Right-click menu, bare desktop only (same currentTarget===target gate as
-  // onSurfaceClick above — icons and windows sit on pointer-events-auto
-  // layers above the otherwise pointer-events-none surface, so a right-click
-  // that lands on either of them never reaches here). canUndo/canRedo are
-  // plain wmkit method calls (not stores), so they're snapshotted once at
-  // open time rather than read reactively in the template.
-  let menuPos = $state<{ x: number; y: number } | null>(null)
+  // canUndo/canRedo are plain wmkit method calls (not stores), so they're
+  // snapshotted once when the menu opens (onOpenChange) rather than read
+  // reactively in the template. bits-ui auto-dismisses on item select and
+  // on Escape / click-away, so the old manual menuPos/closeMenu/runMenuAction
+  // machinery is gone.
   let menuCanUndo = $state(false)
   let menuCanRedo = $state(false)
 
-  function onSurfaceContextMenu(e: MouseEvent) {
-    if (e.currentTarget !== e.target) return
-    e.preventDefault()
+  function onOpenChange(open: boolean) {
+    if (!open) return
     menuCanUndo = wm.canUndo()
     menuCanRedo = wm.canRedo()
-    menuPos = { x: e.clientX, y: e.clientY }
-  }
-
-  function closeMenu() {
-    menuPos = null
-  }
-
-  function runMenuAction(fn: () => void) {
-    fn()
-    closeMenu()
   }
 
   // Cmd/Ctrl+Z / Shift+Z for window-arrangement undo/redo (move, resize,
@@ -61,10 +43,6 @@
   // fights the browser's own text-undo inside the task input or a form
   // field.
   function onWindowKeydown(e: KeyboardEvent) {
-    if (e.key === 'Escape' && menuPos) {
-      closeMenu()
-      return
-    }
     const target = e.target as HTMLElement | null
     const editable = !!target && (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA' || target.isContentEditable)
     if (editable) return
@@ -75,17 +53,48 @@
   }
 </script>
 
-<svelte:window onkeydown={onWindowKeydown} onclick={closeMenu} />
+<svelte:window onkeydown={onWindowKeydown} />
 
 <div class="fixed inset-0 flex flex-col">
-  <div
-    class="relative min-h-0 flex-1 overflow-hidden"
-    role="presentation"
-    onclick={onSurfaceClick}
-    oncontextmenu={onSurfaceContextMenu}
-  >
+  <div class="relative min-h-0 flex-1 overflow-hidden" role="presentation">
     <GraphBackground />
 
+    <ContextMenu.Root {onOpenChange}>
+      <!-- The bare-desktop hit area. Placed before the icons/windows layers
+           so they (pointer-events-auto, later in DOM → paint on top) catch
+           their own right-clicks — the trigger only sees right-clicks that
+           fall through to bare desktop. This DOM-structure gate replaces the
+           old `currentTarget === target` event check. Left-click on bare
+           desktop blurs the focused window (the familiar "click empty
+           desktop to deselect" affordance). -->
+      <ContextMenu.Trigger
+        class="absolute inset-0 z-0"
+        onclick={() => wm.blur()}
+      ></ContextMenu.Trigger>
+      <ContextMenu.Content class="min-w-48">
+        <ContextMenu.Item onSelect={() => wm.arrange('cascade')}>
+          <LayersIcon class="size-4" /> Cascade windows
+        </ContextMenu.Item>
+        <ContextMenu.Item onSelect={() => wm.arrange('tile')}>
+          <Rows3Icon class="size-4" /> Tile windows
+        </ContextMenu.Item>
+        <ContextMenu.Item onSelect={toggleShowDesktop}>
+          <MonitorIcon class="size-4" /> Show desktop
+        </ContextMenu.Item>
+        <ContextMenu.Separator />
+        <ContextMenu.Item onSelect={resetIconLayout}>
+          <RotateCcwIcon class="size-4" /> Reset icon layout
+        </ContextMenu.Item>
+        <ContextMenu.Separator />
+        <ContextMenu.Item disabled={!menuCanUndo} onSelect={() => wm.undo()}>
+          <Undo2Icon class="size-4" /> Undo
+        </ContextMenu.Item>
+        <ContextMenu.Item disabled={!menuCanRedo} onSelect={() => wm.redo()}>
+          <Redo2Icon class="size-4" /> Redo
+        </ContextMenu.Item>
+      </ContextMenu.Content>
+    </ContextMenu.Root>
+
     <div class="pointer-events-none absolute inset-0 z-0">
       {#each $apps as app (app.id)}
         {@const pos = $iconPositions[app.id] ?? { col: 0, row: 0 }}
@@ -107,58 +116,3 @@
 
   <Taskbar />
 </div>
-
-{#if menuPos}
-  <div
-    class="fixed z-50 min-w-48 rounded-md border bg-popover p-1 text-sm text-popover-foreground shadow-md ring-1 ring-foreground/10"
-    style="left: {menuPos.x}px; top: {menuPos.y}px"
-    role="menu"
-  >
-    <button
-      type="button"
-      class="flex w-full items-center gap-2 rounded-sm px-2 py-1.5 text-left hover:bg-accent hover:text-accent-foreground"
-      onclick={() => runMenuAction(() => wm.arrange('cascade'))}
-    >
-      <LayersIcon class="size-4" /> Cascade windows
-    </button>
-    <button
-      type="button"
-      class="flex w-full items-center gap-2 rounded-sm px-2 py-1.5 text-left hover:bg-accent hover:text-accent-foreground"
-      onclick={() => runMenuAction(() => wm.arrange('tile'))}
-    >
-      <Rows3Icon class="size-4" /> Tile windows
-    </button>
-    <button
-      type="button"
-      class="flex w-full items-center gap-2 rounded-sm px-2 py-1.5 text-left hover:bg-accent hover:text-accent-foreground"
-      onclick={() => runMenuAction(toggleShowDesktop)}
-    >
-      <MonitorIcon class="size-4" /> Show desktop
-    </button>
-    <div class="my-1 h-px bg-border"></div>
-    <button
-      type="button"
-      class="flex w-full items-center gap-2 rounded-sm px-2 py-1.5 text-left hover:bg-accent hover:text-accent-foreground"
-      onclick={() => runMenuAction(resetIconLayout)}
-    >
-      <RotateCcwIcon class="size-4" /> Reset icon layout
-    </button>
-    <div class="my-1 h-px bg-border"></div>
-    <button
-      type="button"
-      disabled={!menuCanUndo}
-      class="flex w-full items-center gap-2 rounded-sm px-2 py-1.5 text-left hover:bg-accent hover:text-accent-foreground disabled:pointer-events-none disabled:opacity-50"
-      onclick={() => runMenuAction(() => wm.undo())}
-    >
-      <Undo2Icon class="size-4" /> Undo
-    </button>
-    <button
-      type="button"
-      disabled={!menuCanRedo}
-      class="flex w-full items-center gap-2 rounded-sm px-2 py-1.5 text-left hover:bg-accent hover:text-accent-foreground disabled:pointer-events-none disabled:opacity-50"
-      onclick={() => runMenuAction(() => wm.redo())}
-    >
-      <Redo2Icon class="size-4" /> Redo
-    </button>
-  </div>
-{/if}
diff --git a/web/src/lib/components/ui/context-menu/context-menu-checkbox-item.svelte b/web/src/lib/components/ui/context-menu/context-menu-checkbox-item.svelte
new file mode 100644
index 0000000..9fdc99f
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-checkbox-item.svelte
@@ -0,0 +1,41 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+	import { cn, type WithoutChildrenOrChild } from "$lib/utils.js";
+	import type { Snippet } from "svelte";
+	import CheckIcon from '@lucide/svelte/icons/check';
+
+	let {
+		ref = $bindable(null),
+		checked = $bindable(false),
+		indeterminate = $bindable(false),
+		class: className,
+		inset,
+		children: childrenProp,
+		...restProps
+	}: WithoutChildrenOrChild<ContextMenuPrimitive.CheckboxItemProps> & {
+		inset?: boolean;
+		children?: Snippet;
+	} = $props();
+</script>
+
+<ContextMenuPrimitive.CheckboxItem
+	bind:ref
+	bind:checked
+	bind:indeterminate
+	data-slot="context-menu-checkbox-item"
+	data-inset={inset}
+	class={cn(
+		"focus:bg-accent focus:text-accent-foreground gap-2 rounded-sm py-1.5 pr-8 pl-2 text-sm data-inset:pl-8 [&_svg:not([class*='size-'])]:size-4 relative flex cursor-default items-center outline-hidden select-none data-disabled:pointer-events-none data-disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0",
+		className
+	)}
+	{...restProps}
+>
+	{#snippet children({ checked })}
+		<span class="absolute right-2 pointer-events-none">
+			{#if checked}
+				<CheckIcon  />
+			{/if}
+		</span>
+		{@render childrenProp?.()}
+	{/snippet}
+</ContextMenuPrimitive.CheckboxItem>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-content.svelte b/web/src/lib/components/ui/context-menu/context-menu-content.svelte
new file mode 100644
index 0000000..0c6238c
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-content.svelte
@@ -0,0 +1,28 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+	import ContextMenuPortal from "./context-menu-portal.svelte";
+	import type { ComponentProps } from "svelte";
+	import type { WithoutChildrenOrChild } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		portalProps,
+		class: className,
+		...restProps
+	}: ContextMenuPrimitive.ContentProps & {
+		portalProps?: WithoutChildrenOrChild<ComponentProps<typeof ContextMenuPortal>>;
+	} = $props();
+</script>
+
+<ContextMenuPortal {...portalProps}>
+	<ContextMenuPrimitive.Content
+		bind:ref
+		data-slot="context-menu-content"
+		class={cn(
+			"data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 data-closed:zoom-out-95 data-open:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 ring-foreground/10 bg-popover text-popover-foreground min-w-36 rounded-md p-1 shadow-md ring-1 duration-100 z-50 overflow-x-hidden overflow-y-auto outline-none",
+			className
+		)}
+		{...restProps}
+	/>
+</ContextMenuPortal>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-group-heading.svelte b/web/src/lib/components/ui/context-menu/context-menu-group-heading.svelte
new file mode 100644
index 0000000..0c0f459
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-group-heading.svelte
@@ -0,0 +1,21 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		inset,
+		...restProps
+	}: ContextMenuPrimitive.GroupHeadingProps & {
+		inset?: boolean;
+	} = $props();
+</script>
+
+<ContextMenuPrimitive.GroupHeading
+	bind:ref
+	data-slot="context-menu-group-heading"
+	data-inset={inset}
+	class={cn("text-foreground px-2 py-1.5 text-sm font-medium data-inset:ps-8", className)}
+	{...restProps}
+/>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-group.svelte b/web/src/lib/components/ui/context-menu/context-menu-group.svelte
new file mode 100644
index 0000000..c7c1e06
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-group.svelte
@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+
+	let { ref = $bindable(null), ...restProps }: ContextMenuPrimitive.GroupProps = $props();
+</script>
+
+<ContextMenuPrimitive.Group bind:ref data-slot="context-menu-group" {...restProps} />
diff --git a/web/src/lib/components/ui/context-menu/context-menu-item.svelte b/web/src/lib/components/ui/context-menu/context-menu-item.svelte
new file mode 100644
index 0000000..58de12e
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-item.svelte
@@ -0,0 +1,27 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		inset,
+		variant = "default",
+		...restProps
+	}: ContextMenuPrimitive.ItemProps & {
+		inset?: boolean;
+		variant?: "default" | "destructive";
+	} = $props();
+</script>
+
+<ContextMenuPrimitive.Item
+	bind:ref
+	data-slot="context-menu-item"
+	data-inset={inset}
+	data-variant={variant}
+	class={cn(
+		"focus:bg-accent focus:text-accent-foreground data-[variant=destructive]:text-destructive data-[variant=destructive]:focus:bg-destructive/10 dark:data-[variant=destructive]:focus:bg-destructive/20 data-[variant=destructive]:focus:text-destructive data-[variant=destructive]:*:[svg]:text-destructive focus:*:[svg]:text-accent-foreground gap-2 rounded-sm px-2 py-1.5 text-sm data-inset:pl-8 [&_svg:not([class*='size-'])]:size-4 group/context-menu-item relative flex cursor-default items-center outline-hidden select-none data-disabled:pointer-events-none data-disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0",
+		className
+	)}
+	{...restProps}
+/>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-label.svelte b/web/src/lib/components/ui/context-menu/context-menu-label.svelte
new file mode 100644
index 0000000..4f26fc1
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-label.svelte
@@ -0,0 +1,24 @@
+<script lang="ts">
+	import { cn, type WithElementRef } from "$lib/utils.js";
+	import type { HTMLAttributes } from "svelte/elements";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		inset,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> & {
+		inset?: boolean;
+	} = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="context-menu-label"
+	data-inset={inset}
+	class={cn("text-muted-foreground px-2 py-1.5 text-xs font-medium data-inset:pl-8 data-inset:pl-8", className)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-portal.svelte b/web/src/lib/components/ui/context-menu/context-menu-portal.svelte
new file mode 100644
index 0000000..96b1e3e
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-portal.svelte
@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+
+	let { ...restProps }: ContextMenuPrimitive.PortalProps = $props();
+</script>
+
+<ContextMenuPrimitive.Portal {...restProps} />
diff --git a/web/src/lib/components/ui/context-menu/context-menu-radio-group.svelte b/web/src/lib/components/ui/context-menu/context-menu-radio-group.svelte
new file mode 100644
index 0000000..964cb55
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-radio-group.svelte
@@ -0,0 +1,16 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+
+	let {
+		ref = $bindable(null),
+		value = $bindable(""),
+		...restProps
+	}: ContextMenuPrimitive.RadioGroupProps = $props();
+</script>
+
+<ContextMenuPrimitive.RadioGroup
+	bind:ref
+	bind:value
+	data-slot="context-menu-radio-group"
+	{...restProps}
+/>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-radio-item.svelte b/web/src/lib/components/ui/context-menu/context-menu-radio-item.svelte
new file mode 100644
index 0000000..74663a3
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-radio-item.svelte
@@ -0,0 +1,35 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+	import { cn, type WithoutChild } from "$lib/utils.js";
+	import CheckIcon from '@lucide/svelte/icons/check';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		inset,
+		children: childrenProp,
+		...restProps
+	}: WithoutChild<ContextMenuPrimitive.RadioItemProps> & {
+		inset?: boolean;
+	} = $props();
+</script>
+
+<ContextMenuPrimitive.RadioItem
+	bind:ref
+	data-slot="context-menu-radio-item"
+	data-inset={inset}
+	class={cn(
+		"focus:bg-accent focus:text-accent-foreground gap-2 rounded-sm py-1.5 pr-8 pl-2 text-sm data-inset:pl-8 [&_svg:not([class*='size-'])]:size-4 relative flex cursor-default items-center outline-hidden select-none data-disabled:pointer-events-none data-disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0",
+		className
+	)}
+	{...restProps}
+>
+	{#snippet children({ checked })}
+		<span class="absolute right-2 pointer-events-none">
+			{#if checked}
+				<CheckIcon  />
+			{/if}
+		</span>
+		{@render childrenProp?.({ checked })}
+	{/snippet}
+</ContextMenuPrimitive.RadioItem>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-separator.svelte b/web/src/lib/components/ui/context-menu/context-menu-separator.svelte
new file mode 100644
index 0000000..7f5b237
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-separator.svelte
@@ -0,0 +1,17 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: ContextMenuPrimitive.SeparatorProps = $props();
+</script>
+
+<ContextMenuPrimitive.Separator
+	bind:ref
+	data-slot="context-menu-separator"
+	class={cn("bg-border -mx-1 my-1 h-px", className)}
+	{...restProps}
+/>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-shortcut.svelte b/web/src/lib/components/ui/context-menu/context-menu-shortcut.svelte
new file mode 100644
index 0000000..3305abc
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-shortcut.svelte
@@ -0,0 +1,20 @@
+<script lang="ts">
+	import { cn, type WithElementRef } from "$lib/utils.js";
+	import type { HTMLAttributes } from "svelte/elements";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLSpanElement>> = $props();
+</script>
+
+<span
+	bind:this={ref}
+	data-slot="context-menu-shortcut"
+	class={cn("text-muted-foreground group-focus/context-menu-item:text-accent-foreground ml-auto text-xs tracking-widest", className)}
+	{...restProps}
+>
+	{@render children?.()}
+</span>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-sub-content.svelte b/web/src/lib/components/ui/context-menu/context-menu-sub-content.svelte
new file mode 100644
index 0000000..b14b6da
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-sub-content.svelte
@@ -0,0 +1,17 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: ContextMenuPrimitive.SubContentProps = $props();
+</script>
+
+<ContextMenuPrimitive.SubContent
+	bind:ref
+	data-slot="context-menu-sub-content"
+	class={cn("data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 data-closed:zoom-out-95 data-open:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 bg-popover text-popover-foreground min-w-32 rounded-md border p-1 shadow-lg duration-100", className)}
+	{...restProps}
+/>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-sub-trigger.svelte b/web/src/lib/components/ui/context-menu/context-menu-sub-trigger.svelte
new file mode 100644
index 0000000..37ef36d
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-sub-trigger.svelte
@@ -0,0 +1,29 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+	import { cn, type WithoutChild } from "$lib/utils.js";
+	import ChevronRightIcon from '@lucide/svelte/icons/chevron-right';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		inset,
+		children,
+		...restProps
+	}: WithoutChild<ContextMenuPrimitive.SubTriggerProps> & {
+		inset?: boolean;
+	} = $props();
+</script>
+
+<ContextMenuPrimitive.SubTrigger
+	bind:ref
+	data-slot="context-menu-sub-trigger"
+	data-inset={inset}
+	class={cn(
+		"focus:bg-accent focus:text-accent-foreground data-open:bg-accent data-open:text-accent-foreground rounded-sm px-2 py-1.5 text-sm data-inset:pl-8 [&_svg:not([class*='size-'])]:size-4 flex cursor-default items-center outline-hidden select-none data-inset:ps-8 [&_svg]:pointer-events-none [&_svg]:shrink-0",
+		className
+	)}
+	{...restProps}
+>
+	{@render children?.()}
+	<ChevronRightIcon class="ml-auto" />
+</ContextMenuPrimitive.SubTrigger>
diff --git a/web/src/lib/components/ui/context-menu/context-menu-sub.svelte b/web/src/lib/components/ui/context-menu/context-menu-sub.svelte
new file mode 100644
index 0000000..a03827b
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-sub.svelte
@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+
+	let { open = $bindable(false), ...restProps }: ContextMenuPrimitive.SubProps = $props();
+</script>
+
+<ContextMenuPrimitive.Sub bind:open {...restProps} />
diff --git a/web/src/lib/components/ui/context-menu/context-menu-trigger.svelte b/web/src/lib/components/ui/context-menu/context-menu-trigger.svelte
new file mode 100644
index 0000000..f6a1542
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu-trigger.svelte
@@ -0,0 +1,17 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: ContextMenuPrimitive.TriggerProps = $props();
+</script>
+
+<ContextMenuPrimitive.Trigger
+	bind:ref
+	data-slot="context-menu-trigger"
+	class={cn("cn-context-menu-trigger select-none", className)}
+	{...restProps}
+/>
diff --git a/web/src/lib/components/ui/context-menu/context-menu.svelte b/web/src/lib/components/ui/context-menu/context-menu.svelte
new file mode 100644
index 0000000..cfaefb3
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/context-menu.svelte
@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { ContextMenu as ContextMenuPrimitive } from "bits-ui";
+
+	let { open = $bindable(false), ...restProps }: ContextMenuPrimitive.RootProps = $props();
+</script>
+
+<ContextMenuPrimitive.Root bind:open {...restProps} />
diff --git a/web/src/lib/components/ui/context-menu/index.ts b/web/src/lib/components/ui/context-menu/index.ts
new file mode 100644
index 0000000..cbeaee1
--- /dev/null
+++ b/web/src/lib/components/ui/context-menu/index.ts
@@ -0,0 +1,52 @@
+import Root from "./context-menu.svelte";
+import Sub from "./context-menu-sub.svelte";
+import Portal from "./context-menu-portal.svelte";
+import Trigger from "./context-menu-trigger.svelte";
+import Group from "./context-menu-group.svelte";
+import RadioGroup from "./context-menu-radio-group.svelte";
+import Item from "./context-menu-item.svelte";
+import GroupHeading from "./context-menu-group-heading.svelte";
+import Content from "./context-menu-content.svelte";
+import Shortcut from "./context-menu-shortcut.svelte";
+import RadioItem from "./context-menu-radio-item.svelte";
+import Separator from "./context-menu-separator.svelte";
+import SubContent from "./context-menu-sub-content.svelte";
+import SubTrigger from "./context-menu-sub-trigger.svelte";
+import CheckboxItem from "./context-menu-checkbox-item.svelte";
+import Label from "./context-menu-label.svelte";
+
+export {
+	Root,
+	Sub,
+	Portal,
+	Item,
+	GroupHeading,
+	Label,
+	Group,
+	Trigger,
+	Content,
+	Shortcut,
+	Separator,
+	RadioItem,
+	SubContent,
+	SubTrigger,
+	RadioGroup,
+	CheckboxItem,
+	//
+	Root as ContextMenu,
+	Sub as ContextMenuSub,
+	Portal as ContextMenuPortal,
+	Item as ContextMenuItem,
+	GroupHeading as ContextMenuGroupHeading,
+	Group as ContextMenuGroup,
+	Content as ContextMenuContent,
+	Trigger as ContextMenuTrigger,
+	Shortcut as ContextMenuShortcut,
+	RadioItem as ContextMenuRadioItem,
+	Separator as ContextMenuSeparator,
+	RadioGroup as ContextMenuRadioGroup,
+	SubContent as ContextMenuSubContent,
+	SubTrigger as ContextMenuSubTrigger,
+	CheckboxItem as ContextMenuCheckboxItem,
+	Label as ContextMenuLabel,
+};
diff --git a/web/src/lib/mascot/Mascot.svelte b/web/src/lib/mascot/Mascot.svelte
index 1838b2d..9706783 100644
--- a/web/src/lib/mascot/Mascot.svelte
+++ b/web/src/lib/mascot/Mascot.svelte
@@ -41,12 +41,10 @@
   // unless the prop is declared bindable and the parent uses bind:runtime.
   let {
     runtime = $bindable(),
-    onContextMenu,
     onPet,
     onRequestName
   }: {
     runtime: MascotRuntime
-    onContextMenu: (screenX: number, screenY: number) => void
     onPet: () => void
     /** Called on a plain click while the mascot is a not-yet-named egg — reopens the naming dialog (see NameDialog's Escape-dismiss). */
     onRequestName: () => void
@@ -548,12 +546,6 @@
     endDragTracking(e.pointerId, canvas)
   }
 
-  function handleContextMenu(e: MouseEvent) {
-    e.preventDefault()
-    e.stopPropagation()
-    onContextMenu(e.clientX, e.clientY)
-  }
-
   function syncCanvasSize() {
     if (!canvas) return
     canvas.width = CANVAS_W
@@ -757,7 +749,6 @@
   onpointermove={onPointerMove}
   onpointerup={onPointerUp}
   onpointercancel={onPointerCancel}
-  oncontextmenu={handleContextMenu}
   title={model.name ?? 'Cluck'}
 ></canvas>
 
diff --git a/web/src/lib/mascot/MascotLayer.svelte b/web/src/lib/mascot/MascotLayer.svelte
index cbfc53c..88ecbc4 100644
--- a/web/src/lib/mascot/MascotLayer.svelte
+++ b/web/src/lib/mascot/MascotLayer.svelte
@@ -14,8 +14,10 @@
 
   import { onMount } from 'svelte'
   import Mascot from './Mascot.svelte'
-  import RadialMenu from './RadialMenu.svelte'
+  import MascotMenu from './MascotMenu.svelte'
   import NameDialog from './NameDialog.svelte'
+  import * as ContextMenu from '$lib/components/ui/context-menu'
+  import { MASCOT_ACTIONS } from './actions'
   import { attachStimuli } from './stimuli'
   import {
     initMascotState,
@@ -60,20 +62,11 @@
     busyTalking: false
   })
 
-  let menuPos = $state<{ x: number; y: number } | null>(null)
   let nameDialogOpen = $state(false)
   let nameDialogMode = $state<'hatch' | 'rename'>('hatch')
 
   const model = $derived(getModel())
 
-  function openMenu(x: number, y: number) {
-    menuPos = { x, y }
-  }
-
-  function closeMenu() {
-    menuPos = null
-  }
-
   function requestRename() {
     nameDialogMode = 'rename'
     nameDialogOpen = true
@@ -103,10 +96,11 @@
   }
 
   function refresh() {
-    // Trigger reactivity: the menu reads model visibility predicates on
-    // each render; touching a $state value re-runs the menu's derived
-    // filter. menuPos re-assignment is a no-op if already set.
-    menuPos = menuPos ? { ...menuPos } : null
+    // No-op. The old manual menu needed a nudge to re-run its visibility
+    // filter; the shadcn context-menu content is reactive off ctx.model
+    // (a $state object), so action mutations (happiness, stage, ...) are
+    // reflected live while the menu is open. Kept on actionCtx so leaf
+    // action signatures stay stable.
   }
 
   function onPet() {
@@ -216,25 +210,29 @@
 </script>
 
 <div bind:this={host} class="pointer-events-none absolute inset-0 z-[45]">
-  <Mascot
-    bind:runtime
-    onContextMenu={openMenu}
-    onPet={onPet}
-    onRequestName={() => {
-      nameDialogMode = 'hatch'
-      nameDialogOpen = true
-    }}
-  />
+  <ContextMenu.Root>
+    <!-- The trigger wraps the mascot sprite; right-click on the canvas
+         bubbles up to it and bits-ui opens the menu content (portaled to
+         <body>, so it's fully interactive despite this layer's
+         pointer-events-none root — the old RadialMenu was non-interactive
+         because it rendered inside this root without re-enabling
+         pointer-events). Left-click drag/pet passes through untouched. -->
+    <ContextMenu.Trigger>
+      <Mascot
+        bind:runtime
+        onPet={onPet}
+        onRequestName={() => {
+          nameDialogMode = 'hatch'
+          nameDialogOpen = true
+        }}
+      />
+    </ContextMenu.Trigger>
+    <ContextMenu.Content class="min-w-56 max-w-72">
+      <MascotMenu actions={MASCOT_ACTIONS} ctx={actionCtx} />
+    </ContextMenu.Content>
+  </ContextMenu.Root>
 </div>
 
-{#if menuPos}
-  <RadialMenu
-    pos={menuPos}
-    ctx={actionCtx}
-    onDismiss={closeMenu}
-  />
-{/if}
-
 {#if nameDialogOpen}
   <NameDialog
     mode={nameDialogMode}
diff --git a/web/src/lib/mascot/MascotMenu.svelte b/web/src/lib/mascot/MascotMenu.svelte
new file mode 100644
index 0000000..c10683a
--- /dev/null
+++ b/web/src/lib/mascot/MascotMenu.svelte
@@ -0,0 +1,53 @@
+<script lang="ts">
+  // Renders the mascot action tree (actions.ts MASCOT_ACTIONS) as a shadcn
+  // context menu. Children → nested ContextMenu.Sub (native hover/click
+  // sub-menu navigation, replacing the old manual breadcrumb stack in
+  // RadialMenu.svelte); leaves → ContextMenu.Item with onSelect. The
+  // content portals to <body> via bits-ui (see
+  // ui/context-menu/context-menu-content.svelte), so it escapes the
+  // mascot layer's pointer-events-none root — the old menu was
+  // non-interactive precisely because it rendered inside that root
+  // without re-enabling pointer-events. Visibility predicates are read
+  // reactively off ctx.model, so an action's visibility updates live while
+  // the menu is open (e.g. "Rename" disappears once the egg hatches).
+  //
+  // Recursive: a node with children renders a Sub whose SubContent recurses
+  // into this same component. Svelte resolves the self-import lazily, so
+  // the cycle is fine.
+  import * as ContextMenu from '$lib/components/ui/context-menu'
+  import type { MascotActionCtx, RadialAction } from './types'
+  // Self-import for recursive rendering of nested action groups.
+  import MascotMenu from './MascotMenu.svelte'
+
+  let { actions, ctx }: { actions: RadialAction[]; ctx: MascotActionCtx } = $props()
+
+  const visible = $derived(actions.filter((a) => !a.visible || a.visible(ctx.model)))
+</script>
+
+{#each visible as a (a.id)}
+  {#if a.children && a.children.length > 0}
+    <ContextMenu.Sub>
+      <ContextMenu.SubTrigger>
+        {#if a.icon}<a.icon class="size-4" />{/if}
+        {a.label}
+      </ContextMenu.SubTrigger>
+      <ContextMenu.SubContent class="min-w-56 max-w-72">
+        <MascotMenu actions={a.children} {ctx} />
+      </ContextMenu.SubContent>
+    </ContextMenu.Sub>
+  {:else}
+    <ContextMenu.Item
+      onSelect={() => {
+        a.action?.(ctx)
+      }}
+    >
+      {#if a.icon}<a.icon class="size-4" />{/if}
+      <span class="flex min-w-0 flex-1 flex-col">
+        <span class="truncate">{a.label}</span>
+        {#if a.description}
+          <span class="text-[11px] leading-snug font-normal text-muted-foreground">{a.description}</span>
+        {/if}
+      </span>
+    </ContextMenu.Item>
+  {/if}
+{/each}
diff --git a/web/src/lib/mascot/RadialMenu.svelte b/web/src/lib/mascot/RadialMenu.svelte
deleted file mode 100644
index 143113f..0000000
--- a/web/src/lib/mascot/RadialMenu.svelte
+++ /dev/null
@@ -1,157 +0,0 @@
-<script lang="ts" module>
-  // RadialMenu (now a rounded-button column menu): opened on right-click
-  // over the mascot. Renders the MASCOT_ACTIONS tree as a stack of
-  // rounded buttons with full text labels; selecting a node with
-  // `children` swaps the column to those children + a "Back" button at
-  // the top (tracked via a local breadcrumb stack). Leaf nodes call
-  // `action(ctx)` and dismiss.
-  //
-  // z-[60] — must beat the desktop's own right-click menu (z-50) and
-  // sit above the mascot layer (z-[45]). Dismissal mirrors the desktop
-  // menu: a <svelte:window onclick> closes it, Escape pops one level
-  // then closes on the next press, and the menu's own clicks
-  // stopPropagation so they don't bubble to the close handler.
-
-  import { MASCOT_ACTIONS } from './actions'
-  import type { MascotActionCtx, RadialAction } from './types'
-  import ChevronLeftIcon from '@lucide/svelte/icons/chevron-left'
-  import ChevronRightIcon from '@lucide/svelte/icons/chevron-right'
-</script>
-
-<script lang="ts">
-  let {
-    pos,
-    ctx,
-    onDismiss
-  }: {
-    pos: { x: number; y: number }
-    ctx: MascotActionCtx
-    onDismiss: () => void
-  } = $props()
-
-  // Breadcrumb stack: each entry is the list of actions shown at that
-  // level. The top of the stack is the current column.
-  let stack = $state<RadialAction[][]>([MASCOT_ACTIONS])
-  let depth = $derived(stack.length)
-  let current = $derived(stack[depth - 1] ?? [])
-
-  // Clamp the anchor to the viewport, then decide which side to grow
-  // toward based on anchor position alone (no measure-then-flip — that
-  // paints off-screen first). When the anchor is in the bottom half,
-  // the menu grows upward (bottom edge aligns with anchor.y); same for
-  // the right edge when in the right half. The chicken lives on the
-  // desktop surface's bottom edge, so this almost always flips up.
-  const anchor = $derived.by(() => {
-    const margin = 8
-    const vw = typeof window !== 'undefined' ? window.innerWidth : 1024
-    const vh = typeof window !== 'undefined' ? window.innerHeight : 768
-    const x = Math.max(margin, Math.min(vw - margin, pos.x))
-    const y = Math.max(margin, Math.min(vh - margin, pos.y))
-    return {
-      x,
-      y,
-      growUp: y > vh / 2,
-      growLeft: x > vw / 2
-    }
-  })
-
-  let host = $state<HTMLDivElement | null>(null)
-
-  const visibleItems = $derived(current.filter((a) => !a.visible || a.visible(ctx.model)))
-
-  function selectItem(a: RadialAction, ev: MouseEvent) {
-    ev.stopPropagation()
-    if (a.children && a.children.length > 0) {
-      stack = [...stack, a.children]
-      return
-    }
-    if (a.action) {
-      a.action(ctx)
-    }
-    onDismiss()
-  }
-
-  function back(ev: MouseEvent) {
-    ev.stopPropagation()
-    if (stack.length > 1) {
-      stack = stack.slice(0, -1)
-    } else {
-      onDismiss()
-    }
-  }
-
-  function onWindowClick() {
-    onDismiss()
-  }
-
-  function onWindowKeydown(e: KeyboardEvent) {
-    if (e.key === 'Escape') {
-      e.preventDefault()
-      if (stack.length > 1) {
-        stack = stack.slice(0, -1)
-      } else {
-        onDismiss()
-      }
-    }
-  }
-
-  // Reset the stack when the menu is (re)opened with a new pos.
-  $effect(() => {
-    void pos
-    stack = [MASCOT_ACTIONS]
-  })
-</script>
-
-<svelte:window onclick={onWindowClick} onkeydown={onWindowKeydown} />
-
-<div
-  bind:this={host}
-  class="fixed z-[60] min-w-56 max-w-72 rounded-xl border bg-popover p-1.5 text-sm text-popover-foreground shadow-lg ring-1 ring-foreground/10"
-  style="left: {anchor.growLeft ? 'auto' : `${anchor.x}px`}; right: {anchor.growLeft ? `${window.innerWidth - anchor.x}px` : 'auto'}; top: {anchor.growUp ? 'auto' : `${anchor.y}px`}; bottom: {anchor.growUp ? `${window.innerHeight - anchor.y}px` : 'auto'};"
-  role="menu"
-  tabindex="-1"
-  aria-label="Mascot actions"
-  onclick={(e) => e.stopPropagation()}
-  onkeydown={(e) => {
-    if (e.key === 'Escape') {
-      e.preventDefault()
-      if (stack.length > 1) stack = stack.slice(0, -1)
-      else onDismiss()
-    }
-  }}
->
-  {#if depth > 1}
-    <button
-      type="button"
-      class="mb-1 flex w-full items-center gap-2 rounded-md px-2 py-1.5 text-left text-popover-foreground/70 hover:bg-accent hover:text-accent-foreground"
-      onclick={back}
-    >
-      <ChevronLeftIcon class="size-4" /> Back
-    </button>
-    <div class="my-1 h-px bg-border"></div>
-  {/if}
-
-  {#each visibleItems as a (a.id)}
-    <button
-      type="button"
-      class="flex w-full items-start justify-between gap-2 rounded-md px-2 py-1.5 text-left hover:bg-accent hover:text-accent-foreground"
-      onclick={(ev) => selectItem(a, ev)}
-      oncontextmenu={(ev) => ev.preventDefault()}
-    >
-      <span class="flex min-w-0 flex-1 items-start gap-2">
-        {#if a.icon}
-          <a.icon class="mt-0.5 size-4 shrink-0" />
-        {/if}
-        <span class="flex min-w-0 flex-col">
-          <span class="truncate">{a.label}</span>
-          {#if a.description}
-            <span class="text-[11px] leading-snug font-normal text-popover-foreground/60">{a.description}</span>
-          {/if}
-        </span>
-      </span>
-      {#if a.children && a.children.length > 0}
-        <ChevronRightIcon class="mt-0.5 size-4 shrink-0 opacity-60" />
-      {/if}
-    </button>
-  {/each}
-</div>