diff --git a/apps/desktop/src/renderer/src/App.tsx b/apps/desktop/src/renderer/src/App.tsx
index 2fb1c14..63bc229 100644
--- a/apps/desktop/src/renderer/src/App.tsx
+++ b/apps/desktop/src/renderer/src/App.tsx
@@ -22,6 +22,7 @@ import {
 } from './plugins/renderer-host'
 import { LoadingState, ErrorState } from '@aso/plugin-sdk/ui'
 import { PluginErrorBoundary } from './plugins/PluginErrorBoundary'
+import { PluginFloatingCapsules } from './plugins/PluginFloatingCapsules'
 import { PluginStatusCapsules } from './plugins/PluginStatusCapsules'
 import { usePluginList, usePluginsUiState, sidebarPlugins } from './plugins/store'
 import { BUILTIN_PLUGIN_COMPONENTS } from './plugins/builtin-components'
@@ -456,6 +457,7 @@ export default function App(): JSX.Element {
               onPickSuggestion={handlePickSuggestion}
               onQuoteSelection={handleQuoteSelection}
             />
+            <PluginFloatingCapsules entries={pluginsUi.status} onOpenView={handleOpenView} />
             <BottomSlot
               approvals={state.approvals}
               onResolve={resolveApproval}
diff --git a/apps/desktop/src/renderer/src/plugins/PluginFloatingCapsules.tsx b/apps/desktop/src/renderer/src/plugins/PluginFloatingCapsules.tsx
new file mode 100644
index 0000000..cd608a2
--- /dev/null
+++ b/apps/desktop/src/renderer/src/plugins/PluginFloatingCapsules.tsx
@@ -0,0 +1,118 @@
+/**
+ * 聊天区浮动胶囊（B3 槽位）：与 TitleBar 胶囊（B2）同源数据——主进程单一事实源，
+ * 插件 setStatusItem 后两处同时出现。折叠/展开双态：
+ * - 折叠：右下角单个圆钮（首条图标 + 计数徽标）
+ * - 展开：纵向胶囊堆栈；条目点击行为与 B2 一致（detail → 向上弹层 / openView → 深链）
+ * 无条目不渲染；点外部 / Esc 收起。
+ */
+import { useEffect, useRef, useState } from 'react'
+import type { ReactNode } from 'react'
+import { LuPuzzle } from 'react-icons/lu'
+import type { PluginStatusEntry } from '@shared/types'
+import { PluginIconValue } from './plugin-icons'
+import { StatusPopover, TONE_CLASS } from './PluginStatusCapsules'
+
+export function PluginFloatingCapsules({
+  entries,
+  onOpenView
+}: {
+  entries: PluginStatusEntry[]
+  onOpenView: (view: string, params?: unknown) => void
+}): ReactNode {
+  const [open, setOpen] = useState(false)
+  const [detailKey, setDetailKey] = useState<string | null>(null)
+  const rootRef = useRef<HTMLDivElement | null>(null)
+
+  // 展开时：点外部 / Esc 收起
+  useEffect(() => {
+    if (!open) return
+    const onDown = (e: MouseEvent): void => {
+      if (rootRef.current && !rootRef.current.contains(e.target as Node)) {
+        setOpen(false)
+        setDetailKey(null)
+      }
+    }
+    const onKey = (e: KeyboardEvent): void => {
+      if (e.key === 'Escape') {
+        setOpen(false)
+        setDetailKey(null)
+      }
+    }
+    document.addEventListener('mousedown', onDown)
+    document.addEventListener('keydown', onKey)
+    return () => {
+      document.removeEventListener('mousedown', onDown)
+      document.removeEventListener('keydown', onKey)
+    }
+  }, [open])
+
+  // 条目集合变化（停用/重载/删除）时收起；按 key 序列比较，避免引用变化误关
+  const entryKeys = entries.map((e) => `${e.pluginId}:${e.itemId}`).join(',')
+  useEffect(() => {
+    setOpen(false)
+    setDetailKey(null)
+  }, [entryKeys])
+
+  if (entries.length === 0) return null
+  const shown = entries.slice(0, 4)
+  return (
+    <div
+      ref={rootRef}
+      className="absolute bottom-3 right-3 z-30 flex flex-col items-end gap-1.5 [-webkit-app-region:no-drag]"
+    >
+      {open &&
+        shown.map(({ pluginId, itemId, item }) => {
+          const tone = item.tone ?? 'default'
+          const key = `${pluginId}:${itemId}`
+          const expandable = Boolean(item.detail)
+          const clickable = expandable || Boolean(item.openView)
+          const detailOpen = detailKey === key
+          return (
+            <div key={key} className="relative">
+              <button
+                type="button"
+                title={item.text}
+                onClick={() => {
+                  if (item.detail) setDetailKey(detailOpen ? null : key)
+                  else if (item.openView) {
+                    setOpen(false)
+                    setDetailKey(null)
+                    onOpenView(item.openView.view, item.openView.params)
+                  }
+                }}
+                className={`flex max-w-44 shrink-0 items-center gap-1 rounded-full border px-2.5 py-0.5 text-[11px] leading-[18px] shadow-btn transition-transform ${
+                  TONE_CLASS[tone] ?? TONE_CLASS.default
+                } ${clickable ? 'hover:opacity-80 active:scale-[0.97]' : 'cursor-default'} bg-surface ${detailOpen ? 'opacity-80' : ''}`}
+              >
+                {item.icon && <PluginIconValue icon={item.icon} size={12} className="shrink-0" />}
+                <span className="truncate">{item.text}</span>
+              </button>
+              {detailOpen && item.detail && (
+                <StatusPopover entry={{ pluginId, itemId, item }} onOpenView={onOpenView} direction="up" />
+              )}
+            </div>
+          )
+        })}
+      <button
+        type="button"
+        aria-expanded={open}
+        aria-label={`插件状态（${entries.length} 条）`}
+        title="插件状态"
+        onClick={() => {
+          setOpen((v) => !v)
+          setDetailKey(null)
+        }}
+        className="relative flex size-9 items-center justify-center rounded-full border border-line bg-surface text-ink-2 shadow-raised transition-transform hover:text-ink active:scale-95"
+      >
+        {entries[0]?.item.icon ? (
+          <PluginIconValue icon={entries[0].item.icon} size={16} />
+        ) : (
+          <LuPuzzle size={16} className="text-ink-3" />
+        )}
+        <span className="absolute -right-0.5 -top-0.5 flex h-4 min-w-4 items-center justify-center rounded-full bg-accent px-1 text-[10px] font-medium leading-none text-white">
+          {entries.length}
+        </span>
+      </button>
+    </div>
+  )
+}
diff --git a/apps/desktop/src/renderer/src/plugins/PluginStatusCapsules.tsx b/apps/desktop/src/renderer/src/plugins/PluginStatusCapsules.tsx
index 7f25779..f21a420 100644
--- a/apps/desktop/src/renderer/src/plugins/PluginStatusCapsules.tsx
+++ b/apps/desktop/src/renderer/src/plugins/PluginStatusCapsules.tsx
@@ -11,7 +11,7 @@ import type { ReactNode } from 'react'
 import type { PluginStatusEntry } from '@shared/types'
 import { PluginIconValue } from './plugin-icons'
 
-const TONE_CLASS: Record<string, string> = {
+export const TONE_CLASS: Record<string, string> = {
   default: 'border-line text-ink-2',
   accent: 'border-accent/40 text-accent-ink bg-accent-tint',
   warn: 'border-orange/40 text-orange bg-orange-tint',
@@ -25,11 +25,23 @@ const BADGE_TONE_CLASS: Record<string, string> = {
   danger: 'bg-red-tint text-red'
 }
 
-/** 详情弹层：分组列表，行数据自带动线 */
-function StatusPopover({ entry, onOpenView }: { entry: PluginStatusEntry; onOpenView: (view: string, params?: unknown) => void }): ReactNode {
+/** 详情弹层：分组列表，行数据自带深链（B2 顶栏向下弹、B3 浮动胶囊向上弹） */
+export function StatusPopover({
+  entry,
+  onOpenView,
+  direction = 'down'
+}: {
+  entry: PluginStatusEntry
+  onOpenView: (view: string, params?: unknown) => void
+  direction?: 'down' | 'up'
+}): ReactNode {
   const { item } = entry
   return (
-    <div className="absolute right-0 top-full z-50 mt-1.5 w-72 overflow-hidden rounded-card border border-line bg-surface shadow-overlay">
+    <div
+      className={`absolute right-0 z-50 w-72 overflow-hidden rounded-card border border-line bg-surface shadow-overlay ${
+        direction === 'up' ? 'bottom-full mb-1.5' : 'top-full mt-1.5'
+      }`}
+    >
       <div className="px-2.5 pb-1 pt-2.5 text-[11.5px] font-medium text-ink">{item.detail?.title ?? item.text}</div>
       <div className="max-h-80 overflow-y-auto overscroll-contain px-1.5 pb-1.5">
         {item.detail?.sections.map((section, si) => (
diff --git a/docs/plugins.md b/docs/plugins.md
index e05be6f..9b7bad0 100644
--- a/docs/plugins.md
+++ b/docs/plugins.md
@@ -174,7 +174,7 @@ api.ui.onSettingsAction((key) => {}) // button 条目点击回调（key = 按钮
 | 深链 | `openView(view, params)`（main 侧 IPC 广播 / 页侧桥直通） | ✅ |
 | 工具栏按钮（B5） | `registerToolbarButton` 数据已通，Composer 工具行渲染 | ⏳ 下版本 |
 | 聊天流富组件（B4） | ```类型``` 围栏块 → 宿主元组件（data-table/stat-grid/step-list/kv-card） | ⏳ 下版本 |
-| 聊天区浮动胶囊（B3） | 与 B2 同源数据，折叠/展开双态 | ⏳ 下版本 |
+| 聊天区浮动胶囊（B3） | 与 B2 同源数据：聊天列右下角折叠圆钮（计数徽标），展开为纵向胶囊堆栈，detail 弹层/深链与 B2 一致 | ✅ |
 
 ## 交互基线
 
diff --git a/docs/roadmap.md b/docs/roadmap.md
index ae8bcdc..4e62f5d 100644
--- a/docs/roadmap.md
+++ b/docs/roadmap.md
@@ -12,7 +12,7 @@
 | v0.4.0 | 工具与审批 | 工具调用卡片（参数/结果折叠展示）、tool_call 拦截 → Approval Card、defineTool 业务工具骨架（本地可跑的演示工具） |
 | v0.5.0 | 打磨 | 深浅主题、GSAP 动效细节、快捷键、错误态/空态、队列可视化、自动滚动策略 |
 | v0.8.0 | 动态插件系统（M0–M3） | 两层能力模型（内置组件级/外置 iframe）、pi 原生契约聚合 extension、@aso/plugin-sdk、plugin://peer:// 协议、视图切换+聊天保活+徽标、侧栏/面板/胶囊/深链槽位、浏览器面板插件化、插件重载 |
-| v0.9.0 | 插件一等公民 + 可观测 | entry.renderer 宿主内 React 组件（Blob 装载+单实例 React）、.pi/extensions 一等插件源（build 开关门控）、声明式设置体系（13 控件+一级导航入口）、统一日志系统（滚动文件/api.log/IPC 追踪/渲染层错误归档）、渐进式教程 docs/plugins/ + DESIGN.md + plugin-template、性能/样式标准与检验器（激活 10s/装载 8s 护栏、@aso/plugin-sdk/ui 组件库+三态、withTimeout/withRetry、plugin:check） |
+| v0.9.0 | 插件一等公民 + 可观测 | entry.renderer 宿主内 React 组件（Blob 装载+单实例 React）、.pi/extensions 一等插件源（build 开关门控）、声明式设置体系（13 控件+一级导航入口）、统一日志系统（滚动文件/api.log/IPC 追踪/渲染层错误归档）、渐进式教程 docs/plugins/ + DESIGN.md + plugin-template、性能/样式标准与检验器（激活 10s/装载 8s 护栏、@aso/plugin-sdk/ui 组件库+三态、withTimeout/withRetry、plugin:check）、状态胶囊详情弹层+聊天区浮动胶囊（B3，与 B2 同源）、图标统一 lucide 白名单、面板平铺标签条 |
 | 未来 | | 插件管理与 zip 导入（M4）、ed25519 签名在线更新（M5）、外置插件模板与开发工作流（M6）、pi 原生扩展目录管控（M7）、B3/B4/B5 槽位、electron-builder 打包与自动更新、i18n（中/英）、sqlite 持久化与迁移、本地备份恢复、热点词/生成/模板业务插件、手动模式编排 UI、RPC 子进程隔离模式 |
 
 ---