diff --git a/apps/desktop/src/main/utils/paths.ts b/apps/desktop/src/main/utils/paths.ts
index 35e7b32..fb8e61b 100644
--- a/apps/desktop/src/main/utils/paths.ts
+++ b/apps/desktop/src/main/utils/paths.ts
@@ -54,7 +54,7 @@ export function getRecPath(): string {
 
 /**
  * STT sidecar 실행 경로.
- * - dev: python/python3 + sidecar/main.py
+ * - dev: sidecar/.venv/bin/python (있으면) + sidecar/main.py, 없으면 시스템 python3
  * - production: sidecar/sidecar(.exe) (PyInstaller 빌드)
  */
 export function getSidecarCommand(): { command: string; args: string[] } {
@@ -71,8 +71,19 @@ export function getSidecarCommand(): { command: string; args: string[] } {
     return { command: pythonCmd, args: [pyPath] }
   }
 
-  // dev: Python 직접 실행
-  const sidecarPath = path.join(app.getAppPath(), 'sidecar', 'main.py')
+  // dev: venv 우선 → 없으면 시스템 python
+  const sidecarDir = path.join(app.getAppPath(), 'sidecar')
+  const sidecarPath = path.join(sidecarDir, 'main.py')
+
+  const venvPython =
+    process.platform === 'win32'
+      ? path.join(sidecarDir, '.venv', 'Scripts', 'python.exe')
+      : path.join(sidecarDir, '.venv', 'bin', 'python3')
+
+  if (existsSync(venvPython)) {
+    return { command: venvPython, args: [sidecarPath] }
+  }
+
   const pythonCmd = process.platform === 'win32' ? 'python' : 'python3'
   return { command: pythonCmd, args: [sidecarPath] }
 }
diff --git a/apps/desktop/src/renderer/components/HotkeyRecordModal.tsx b/apps/desktop/src/renderer/components/HotkeyRecordModal.tsx
index 8a577a4..a939c5c 100644
--- a/apps/desktop/src/renderer/components/HotkeyRecordModal.tsx
+++ b/apps/desktop/src/renderer/components/HotkeyRecordModal.tsx
@@ -18,7 +18,7 @@ import {
 import { d3roPalette } from '@d3ro/ui/theme'
 import { useI18n } from '@d3ro/i18n'
 import type { HotkeyBinding } from '@d3ro/core/types'
-import { formatHotkeyLabel } from '../utils/format-hotkey'
+import { formatHotkeyLabel, getPlatform, keyCodeToName } from '../utils/format-hotkey'
 
 // ── 키 이름 매핑 (Windows) ──────────────────────────────
 const KEY_DISPLAY_MAP: Record<number, string> = {
@@ -55,7 +55,10 @@ const RESERVED_COMBOS = [
 const MODIFIER_KEYCODES = new Set([16, 17, 18, 91, 92, 160, 161, 162, 163, 164, 165])
 
 function getKeyName(keyCode: number, key: string): string {
-  if (KEY_DISPLAY_MAP[keyCode]) return KEY_DISPLAY_MAP[keyCode]
+  // 플랫폼별 라벨 (macOS는 ⌘/⇧/⌃/⌥). format-hotkey.ts의 단일 매핑을 사용.
+  const platform = getPlatform()
+  const mapped = keyCodeToName(keyCode, platform)
+  if (mapped && !mapped.startsWith('Key')) return mapped
   if (key.length === 1) return key.toUpperCase()
   return key
 }
@@ -291,7 +294,12 @@ export function HotkeyRecordModal({
         {/* 상태 표시 */}
         {isReady && !error && (
           <Typography sx={{ color: d3roPalette.tag.green, fontSize: '12px', mt: 1, fontWeight: 600 }}>
-            {t('hotkey.ready', { keys: captured?.map(k => k.name).join(' + ') ?? '' })}
+            {t('hotkey.ready', {
+              keys:
+                captured
+                  ?.map((k) => k.name)
+                  .join(getPlatform() === 'darwin' ? '' : ' + ') ?? ''
+            })}
           </Typography>
         )}
 
diff --git a/apps/desktop/src/renderer/utils/format-hotkey.ts b/apps/desktop/src/renderer/utils/format-hotkey.ts
index a59a853..0210ebc 100644
--- a/apps/desktop/src/renderer/utils/format-hotkey.ts
+++ b/apps/desktop/src/renderer/utils/format-hotkey.ts
@@ -7,9 +7,9 @@
 
 import type { HotkeyBinding } from '@d3ro/core/types'
 
-type Platform = 'darwin' | 'win32' | 'linux'
+export type Platform = 'darwin' | 'win32' | 'linux'
 
-function getPlatform(): Platform {
+export function getPlatform(): Platform {
   const p = (window as { electronAPI?: { platform?: string } }).electronAPI?.platform
   if (p === 'darwin' || p === 'win32' || p === 'linux') return p
   // 폴백: SSR/테스트 환경에서는 navigator.platform로 추정.
@@ -18,7 +18,7 @@ function getPlatform(): Platform {
 }
 
 // keyCode → 키명. Windows VK_* 기준 + 일부 macOS 분기.
-function keyCodeToName(keyCode: number, platform: Platform): string {
+export function keyCodeToName(keyCode: number, platform: Platform = getPlatform()): string {
   // Modifier 표기 — 플랫폼별
   if (platform === 'darwin') {
     if (keyCode === 16 || keyCode === 160 || keyCode === 161) return '⇧'