refactor: remove AI model indicator from status bar

Remove the hardcoded "Claude Sonnet 4" stub label and unused Sparkles
import — no model picker is planned at this stage.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

mcp-server/index.js

@@ -32,10 +32,16 @@ import { startUiBridge } from './ws-bridge.js'
 const VAULT_PATH = process.env.VAULT_PATH || process.env.HOME + '/Laputa'
 const WS_UI_PORT = parseInt(process.env.WS_UI_PORT || '9711', 10)
 
-// Start the UI bridge so stdio-based MCP tools can broadcast UI actions
-const uiBridge = startUiBridge(WS_UI_PORT)
+// Start the UI bridge so stdio-based MCP tools can broadcast UI actions.
+// If the port is already in use (e.g. by the running Laputa app), continue
+// without the bridge — vault tools still work via stdio MCP.
+let uiBridge = null
+startUiBridge(WS_UI_PORT).then((bridge) => {
+  uiBridge = bridge
+})
 
 function broadcastUiAction(action, payload) {
+  if (!uiBridge) return
   const msg = JSON.stringify({ type: 'ui_action', action, ...payload })
   for (const client of uiBridge.clients) {
     if (client.readyState === 1) client.send(msg)

mcp-server/ws-bridge.js

@@ -19,6 +19,7 @@
  * Protocol (UI bridge):
  *   Server broadcasts: { "type": "ui_action", "action": "open_note", "path": "..." }
  */
+import { createServer } from 'node:http'
 import { WebSocketServer } from 'ws'
 import {
   readNote, createNote, searchNotes, appendToNote,
@@ -80,15 +81,34 @@ async function handleMessage(data) {
   }
 }
 
+/**
+ * Attempt to start the UI bridge WebSocket server.
+ * Returns a Promise that resolves to the WebSocketServer or null if the port
+ * is unavailable (e.g. another Laputa instance owns it).
+ */
 export function startUiBridge(port = WS_UI_PORT) {
-  uiBridge = new WebSocketServer({ port })
+  return new Promise((resolve) => {
+    const httpServer = createServer()
 
-  uiBridge.on('connection', () => {
-    console.error(`[ws-bridge] UI client connected on port ${port}`)
+    httpServer.on('error', (err) => {
+      if (err.code === 'EADDRINUSE') {
+        console.error(`[ws-bridge] UI bridge port ${port} already in use, disabling bridge`)
+      } else {
+        console.error(`[ws-bridge] UI bridge error: ${err.message}`)
+      }
+      resolve(null)
+    })
+
+    httpServer.listen(port, () => {
+      const wss = new WebSocketServer({ server: httpServer })
+      wss.on('connection', () => {
+        console.error(`[ws-bridge] UI client connected on port ${port}`)
+      })
+      uiBridge = wss
+      console.error(`[ws-bridge] UI bridge listening on ws://localhost:${port}`)
+      resolve(wss)
+    })
   })
-
-  console.error(`[ws-bridge] UI bridge listening on ws://localhost:${port}`)
-  return uiBridge
 }
 
 export function startBridge(port = WS_PORT) {
@@ -116,6 +136,5 @@ export function startBridge(port = WS_PORT) {
 // Run directly if invoked as main module
 const isMain = process.argv[1]?.endsWith('ws-bridge.js')
 if (isMain) {
-  startUiBridge()
-  startBridge()
+  startUiBridge().then(() => startBridge())
 }

src-tauri/src/menu.rs

@@ -23,6 +23,7 @@ const NOTE_TRASH: &str = "note-trash";
 const EDIT_FIND_IN_VAULT: &str = "edit-find-in-vault";
 const VIEW_GO_BACK: &str = "view-go-back";
 const VIEW_GO_FORWARD: &str = "view-go-forward";
+const APP_CHECK_FOR_UPDATES: &str = "app-check-for-updates";
 
 const CUSTOM_IDS: &[&str] = &[
     APP_SETTINGS,
@@ -44,6 +45,7 @@ const CUSTOM_IDS: &[&str] = &[
     VIEW_ZOOM_RESET,
     VIEW_GO_BACK,
     VIEW_GO_FORWARD,
+    APP_CHECK_FOR_UPDATES,
 ];
 
 /// IDs of menu items that should be disabled when no note tab is active.
@@ -56,10 +58,15 @@ fn build_app_menu(app: &App) -> MenuResult {
         .id(APP_SETTINGS)
         .accelerator("CmdOrCtrl+,")
         .build(app)?;
+    let check_updates_item = MenuItemBuilder::new("Check for Updates...")
+        .id(APP_CHECK_FOR_UPDATES)
+        .build(app)?;
 
     Ok(SubmenuBuilder::new(app, "Laputa")
         .about(None)
         .separator()
+        .item(&check_updates_item)
+        .separator()
         .item(&settings_item)
         .separator()
         .services()
@@ -269,6 +276,7 @@ mod tests {
             "view-zoom-reset",
             "view-go-back",
             "view-go-forward",
+            "app-check-for-updates",
         ];
         for id in &expected {
             assert!(CUSTOM_IDS.contains(id), "missing custom ID: {id}");

src/components/AiPanel.test.tsx

@@ -1,5 +1,5 @@
 import { describe, it, expect, vi } from 'vitest'
-import { render, screen, fireEvent } from '@testing-library/react'
+import { render, screen, fireEvent, act } from '@testing-library/react'
 import { AiPanel } from './AiPanel'
 import type { VaultEntry } from '../types'
 
@@ -133,4 +133,33 @@ describe('AiPanel', () => {
     const input = screen.getByTestId('agent-input') as HTMLInputElement
     expect(input.placeholder).toBe('Ask the AI agent...')
   })
+
+  it('auto-focuses input on mount', async () => {
+    vi.useFakeTimers()
+    render(<AiPanel onClose={vi.fn()} vaultPath="/tmp/vault" />)
+    await act(() => { vi.advanceTimersByTime(1) })
+    const input = screen.getByTestId('agent-input')
+    expect(document.activeElement).toBe(input)
+    vi.useRealTimers()
+  })
+
+  it('calls onClose when Escape is pressed while panel has focus', async () => {
+    vi.useFakeTimers()
+    const onClose = vi.fn()
+    render(<AiPanel onClose={onClose} vaultPath="/tmp/vault" />)
+    await act(() => { vi.advanceTimersByTime(1) })
+    // Input is focused inside the panel, so Escape should trigger onClose
+    fireEvent.keyDown(document.activeElement!, { key: 'Escape' })
+    expect(onClose).toHaveBeenCalledOnce()
+    vi.useRealTimers()
+  })
+
+  it('calls onClose when Escape is pressed on panel element', () => {
+    const onClose = vi.fn()
+    render(<AiPanel onClose={onClose} vaultPath="/tmp/vault" />)
+    const panel = screen.getByTestId('ai-panel')
+    panel.focus()
+    fireEvent.keyDown(panel, { key: 'Escape' })
+    expect(onClose).toHaveBeenCalledOnce()
+  })
 })

src/components/AiPanel.tsx

@@ -1,4 +1,4 @@
-import { useState, useRef, useEffect, useMemo } from 'react'
+import { useState, useRef, useEffect, useCallback, useMemo } from 'react'
 import { Robot, X, PaperPlaneRight, Plus, Link } from '@phosphor-icons/react'
 import { AiMessage } from './AiMessage'
 import { useAiAgent, type AiAgentMessage } from '../hooks/useAiAgent'
@@ -103,10 +103,10 @@ function MessageHistory({ messages, isActive, onOpenNote, hasContext }: {
   )
 }
 
-function InputBar({ input, onInputChange, onSend, onKeyDown, isActive, hasContext }: {
+function InputBar({ input, onInputChange, onSend, onKeyDown, isActive, hasContext, inputRef }: {
   input: string; onInputChange: (v: string) => void
   onSend: () => void; onKeyDown: (e: React.KeyboardEvent) => void
-  isActive: boolean; hasContext: boolean
+  isActive: boolean; hasContext: boolean; inputRef: React.RefObject<HTMLInputElement | null>
 }) {
   const sendDisabled = isActive || !input.trim()
   return (
@@ -116,6 +116,7 @@ function InputBar({ input, onInputChange, onSend, onKeyDown, isActive, hasContex
     >
       <div className="flex items-end gap-2">
         <input
+          ref={inputRef}
           value={input}
           onChange={e => onInputChange(e.target.value)}
           onKeyDown={onKeyDown}
@@ -150,6 +151,8 @@ function InputBar({ input, onInputChange, onSend, onKeyDown, isActive, hasContex
 
 export function AiPanel({ onClose, onOpenNote, vaultPath, activeEntry, entries, allContent }: AiPanelProps) {
   const [input, setInput] = useState('')
+  const inputRef = useRef<HTMLInputElement>(null)
+  const panelRef = useRef<HTMLElement>(null)
 
   const linkedEntries = useMemo(() => {
     if (!activeEntry || !entries) return []
@@ -163,9 +166,33 @@ export function AiPanel({ onClose, onOpenNote, vaultPath, activeEntry, entries,
 
   const agent = useAiAgent(vaultPath, contextPrompt)
   const hasContext = !!activeEntry
-
   const isActive = agent.status === 'thinking' || agent.status === 'tool-executing'
 
+  useEffect(() => {
+    const timer = setTimeout(() => inputRef.current?.focus(), 0)
+    return () => clearTimeout(timer)
+  }, [])
+
+  useEffect(() => {
+    if (isActive) {
+      panelRef.current?.focus()
+    } else {
+      inputRef.current?.focus()
+    }
+  }, [isActive])
+
+  const handleEscape = useCallback((e: KeyboardEvent) => {
+    if (e.key === 'Escape' && panelRef.current?.contains(document.activeElement)) {
+      e.preventDefault()
+      onClose()
+    }
+  }, [onClose])
+
+  useEffect(() => {
+    window.addEventListener('keydown', handleEscape)
+    return () => window.removeEventListener('keydown', handleEscape)
+  }, [handleEscape])
+
   const handleSend = () => {
     if (!input.trim() || isActive) return
     agent.sendMessage(input)
@@ -181,7 +208,10 @@ export function AiPanel({ onClose, onOpenNote, vaultPath, activeEntry, entries,
 
   return (
     <aside
+      ref={panelRef}
+      tabIndex={-1}
       className="flex flex-1 flex-col overflow-hidden border-l border-border bg-background text-foreground"
+      style={{ outline: 'none' }}
       data-testid="ai-panel"
     >
       <PanelHeader onClose={onClose} onClear={agent.clearConversation} />
@@ -201,6 +231,7 @@ export function AiPanel({ onClose, onOpenNote, vaultPath, activeEntry, entries,
         onKeyDown={handleKeyDown}
         isActive={isActive}
         hasContext={hasContext}
+        inputRef={inputRef}
       />
     </aside>
   )

src/components/StatusBar.tsx

@@ -1,5 +1,5 @@
 import { useState, useRef, useEffect } from 'react'
-import { Package, RefreshCw, Sparkles, FileText, Bell, Settings, FolderOpen, Check, Github, CircleDot, AlertTriangle, Loader2, GitCommitHorizontal, Search, X } from 'lucide-react'
+import { Package, RefreshCw, FileText, Bell, Settings, FolderOpen, Check, Github, CircleDot, AlertTriangle, Loader2, GitCommitHorizontal, Search, X } from 'lucide-react'
 import type { LastCommitInfo, SyncStatus } from '../types'
 import type { IndexingProgress } from '../hooks/useIndexing'
 import { openExternalUrl } from '../utils/url'
@@ -302,7 +302,6 @@ export function StatusBar({ noteCount, modifiedCount = 0, vaultPath, vaults, onS
         {indexingProgress && <IndexingBadge progress={indexingProgress} />}
       </div>
       <div style={{ display: 'flex', alignItems: 'center', gap: 12 }}>
-        <span style={ICON_STYLE}><Sparkles size={13} style={{ color: 'var(--accent-purple)' }} />Claude Sonnet 4</span>
         <span style={ICON_STYLE}><FileText size={13} />{noteCount.toLocaleString()} notes</span>
         {zoomLevel !== 100 && (
           <span

src/hooks/useAppCommands.ts

@@ -122,6 +122,7 @@ export function useAppCommands(config: AppCommandsConfig): CommandAction[] {
     onSearch: config.onSearch,
     onGoBack: config.onGoBack,
     onGoForward: config.onGoForward,
+    onCheckForUpdates: config.onCheckForUpdates,
     activeTabPathRef: config.activeTabPathRef,
     handleCloseTabRef: config.handleCloseTabRef,
     activeTabPath: config.activeTabPath,

src/hooks/useMenuEvents.test.ts

@@ -19,6 +19,7 @@ function makeHandlers(): MenuEventHandlers {
     onSearch: vi.fn(),
     onGoBack: vi.fn(),
     onGoForward: vi.fn(),
+    onCheckForUpdates: vi.fn(),
     activeTabPathRef: { current: '/vault/test.md' } as React.MutableRefObject<string | null>,
     handleCloseTabRef: { current: vi.fn() } as React.MutableRefObject<(path: string) => void>,
     activeTabPath: '/vault/test.md',
@@ -161,6 +162,12 @@ describe('dispatchMenuEvent', () => {
     expect(h.onGoForward).toHaveBeenCalled()
   })
 
+  it('app-check-for-updates triggers check for updates', () => {
+    const h = makeHandlers()
+    dispatchMenuEvent('app-check-for-updates', h)
+    expect(h.onCheckForUpdates).toHaveBeenCalled()
+  })
+
   it('unknown event ID does nothing', () => {
     const h = makeHandlers()
     dispatchMenuEvent('unknown-event', h)

src/hooks/useMenuEvents.ts

@@ -19,6 +19,7 @@ export interface MenuEventHandlers {
   onSearch: () => void
   onGoBack?: () => void
   onGoForward?: () => void
+  onCheckForUpdates?: () => void
   activeTabPathRef: React.MutableRefObject<string | null>
   handleCloseTabRef: React.MutableRefObject<(path: string) => void>
   activeTabPath: string | null
@@ -58,6 +59,7 @@ function dispatchActiveTabEvent(id: string, h: MenuEventHandlers): boolean {
 function dispatchOptionalEvent(id: string, h: MenuEventHandlers): boolean {
   if (id === 'view-go-back') { h.onGoBack?.(); return true }
   if (id === 'view-go-forward') { h.onGoForward?.(); return true }
+  if (id === 'app-check-for-updates') { h.onCheckForUpdates?.(); return true }
   return false
 }