FIX: engine.spec dung os thay _os (NameError luc build)

.github/workflows/windows-build.yml

@@ -1,63 +0,0 @@
-name: windows-build
-
-on:
-  workflow_dispatch:
-  push:
-    tags: ['v*']
-
-jobs:
-  build-windows:
-    runs-on: windows-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Setup Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-
-      - name: Setup Node
-        uses: actions/setup-node@v4
-        with:
-          node-version: 20
-
-      - name: Setup Rust
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Install backend deps
-        run: |
-          pip install pyinstaller pywin32
-          pip install -r requirements.txt
-          # pedalboard --no-deps: tránh supertonic (kéo onnx2tf/opencv/pocket-tts —
-          # xung đột numpy<2 vs >=2 — 2026-08-08)
-          pip install --no-deps pedalboard>=0.8.0
-
-      - name: Precompile JS (Babel)
-        shell: bash
-        run: |
-          npm install --no-audit --no-fund 2>/dev/null || true
-          node node_modules/@babel/cli/bin/babel.js app/static/js/app.jsx --config-file ./babel.config.json -o app/static/js/app.precompiled.js
-
-      - name: Build daw_engine.exe (PyInstaller)
-        run: pyinstaller engine.spec --clean --noconfirm
-
-      - name: Stage sidecar binary (Tauri naming)
-        shell: bash
-        run: |
-          mkdir -p src-tauri/binaries
-          cp dist/daw_engine.exe "src-tauri/binaries/daw_engine-x86_64-pc-windows-msvc.exe"
-
-      - name: Install Tauri CLI
-        run: npm install -D @tauri-apps/cli@^2
-
-      - name: Build Windows installers (NSIS + MSI)
-        run: npx tauri build --no-bundle 2>/dev/null || npx tauri build
-
-      - name: Upload installer artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: SonicForgeDAW-windows
-          path: |
-            src-tauri/target/release/bundle/nsis/*.exe
-            src-tauri/target/release/bundle/msi/*.msi
-            dist/daw_engine.exe

.gitignore

@@ -28,4 +28,7 @@ samples/
 .vscode/
 *.log
 celerybeat-schedule
-node_modules
+node_modules
+src-tauri/target/
+src-tauri/binaries/
+src-tauri/vc_redist.x64.exe

BUILD_WINDOWS.md

@@ -1,45 +0,0 @@
-# BUILD WINDOWS — hướng dẫn build installer (.exe) trên máy Windows
-
-## Yêu cầu trước khi build
-| Thành phần | Cài từ | Ghi chú |
-|---|---|---|
-| **Python 3.11+** | python.org | Tick **"Add to PATH"** |
-| **Node.js 20+** | nodejs.org | |
-| **Rust (MSVC toolchain)** | https://rustup.rs (hoặc script tự cài) | Cần cho Tauri |
-| **Visual Studio Build Tools** | visualstudio.microsoft.com | Workload **"Desktop development with C++"** (bắt buộc — MSVC linker cho Rust/Tauri) |
-| **WebView2 Runtime** | Windows 10/11 có sẵn; Windows 7/8 tải từ Microsoft | Tauri yêu cầu |
-
-> Nếu lỗi `cargo: program not found` → chưa cài Rust: chạy `rustup-init.exe -y` rồi **mở cmd MỚI** (PATH refresh).
-
-## Cách build — 1 lệnh
-```bat
-build_windows.bat
-```
-Script tự làm: cài Rust (nếu thiếu) → pip deps → Babel precompile → `pyinstaller engine.spec` (daw_engine.exe) → copy sidecar → `npx tauri build`.
-
-## Kết quả
-```
-src-tauri\target\release\bundle\nsis\SonicForgeDAW_1.0.0_x64-setup.exe   ← cài đặt (.exe)
-src-tauri\target\release\bundle\msi\SonicForgeDAW_1.0.0_x64_en-US.msi    ← MSI
-dist\daw_engine.exe                                                       ← engine đơn (debug)
-```
-
-## Thủ công (không dùng script)
-```bat
-pip install pyinstaller pywin32
-pip install -r requirements.txt
-pip install --no-deps pedalboard>=0.8.0
-node node_modules/@babel/cli/bin/babel.js app/static/js/app.jsx --config-file ./babel.config.json -o app/static/js/app.precompiled.js
-pyinstaller engine.spec --clean --noconfirm
-mkdir src-tauri\binaries
-copy dist\daw_engine.exe src-tauri\binaries\daw_engine-x86_64-pc-windows-msvc.exe
-npm install -D @tauri-apps/cli@^2
-npx tauri build
-```
-
-## Kiểm thử sau cài (spec — mục IV)
-1. Mở app → Task Manager: `daw_engine.exe` chạy nền; đóng app → tiến trình tắt hẳn (không orphan).
-2. Browser ngoài mở `http://localhost:8000/docs` → Swagger hiển thị.
-3. Plugin Manager → path `C:\Program Files\Common Files\VST3` → Scan → tìm thấy VST3 (Vital, Surge XT...).
-4. Export WAV → file chứa tiếng VST3 (qua pedalboard).
-5. Dữ liệu lưu tại `%APPDATA%\SonicForgeDAW\`.

Dockerfile

@@ -2,33 +2,28 @@
 FROM python:3.11-slim
 
 # Cài đặt các gói thư viện đồ hoạ và asound bắt buộc đối với JUCE / VST3 Linux (22_CLIENT_DESK.md)
-# ⚠️ Check trước: package đã có (layer cache bị invalidation) → BỎ QUA apt-get (tiết kiệm thời gian build)
+RUN apt-get update && apt-get install -y \
-RUN if command -v fluidsynth >/dev/null 2>&1 && command -v ffmpeg >/dev/null 2>&1 && command -v Xvfb >/dev/null 2>&1; then \
+    libgl1 \
-        echo "Apt packages already installed - skip apt-get update/install"; \
+    libglx-mesa0 \
-    else \
+    libglu1-mesa \
-        apt-get update && apt-get install -y \
+    libasound2 \
-            libgl1 \
+    libjack-jackd2-0 \
-            libglx-mesa0 \
+    libfreetype6 \
-            libglu1-mesa \
+    libfontconfig1 \
-            libasound2 \
+    libx11-6 \
-            libjack-jackd2-0 \
+    libxext6 \
-            libfreetype6 \
+    libxinerama1 \
-            libfontconfig1 \
+    libxrandr2 \
-            libx11-6 \
+    libxcursor1 \
-            libxext6 \
+    xvfb \
-            libxinerama1 \
+    ffmpeg \
-            libxrandr2 \
+    libsndfile1 \
-            libxcursor1 \
+    libfluidsynth3 \
-            xvfb \
+    libcurl4 \
-            ffmpeg \
+    build-essential \
-            libsndfile1 \
+    fluidsynth \
-            libfluidsynth3 \
+    vorbis-tools \
-            libcurl4 \
+    && rm -rf /var/lib/apt/lists/*
-            build-essential \
-            fluidsynth \
-            vorbis-tools \
-            && rm -rf /var/lib/apt/lists/*; \
-    fi
 
 # Thiết lập biến môi trường hiển thị cho X11 ảo
 ENV DISPLAY=:99

TEST_DEBUG_PLAN.md

@@ -0,0 +1,95 @@
+# TEST & DEBUG PLAN — SonicForge DAW Standalone (Windows .exe / .msi)
+
+Áp dụng cho bản đóng gói Tauri v2 + PyInstaller (xem `DESKTOP_INSTALL_PLAN.md`,
+`build_windows.ps1`, `engine.spec`, `src-tauri/`).
+
+---
+
+## 0. Cổng kiểm soát TRƯỚC khi build (pre-build gates — chạy trên máy dev)
+
+```powershell
+# 1. Backend tests (repo đã có 86 tests pytest)
+python -m pytest tests/ -x -q
+
+# 2. Frontend syntax + bundle
+node --check app/static/js/app.precompiled.js
+node build.mjs                      # rebuild app.precompiled.js từ app.jsx
+
+# 3. Python syntax của entry + spec
+python -m py_compile desktop_engine.py engine.spec app/config.py app/tasks/worker.py
+
+# 4. Chạy thử engine độc lập (chưa cần Tauri)
+python desktop_engine.py            # mở browser: http://127.0.0.1:8000/docs
+```
+
+Gate: tất cả PASS mới chạy `build_windows.ps1`.
+
+---
+
+## 1. TEST PLAN — theo 6 kịch bản của tài liệu gốc
+
+| # | Kịch bản | Cách kiểm thử | Kết quả mong đợi |
+|---|---|---|---|
+| 1 | **Lifecycle & Process Spawn** | Mở app → Task Manager tìm `daw_engine.exe` → đóng cửa sổ → kiểm tra lại | Engine xuất hiện lúc launch; BIẾN MẤT hoàn toàn khi đóng (không orphan). Engine còn có watchdog: nếu cha chết đột ngột, tự thoát ≤1s |
+| 2 | **Port 8000 & Fallback** | Mở app → browser truy cập `http://localhost:8000/docs`; hoặc chiếm sẵn port 8000 (vd `net stop` dịch vụ khác / chạy server khác) rồi mở app | Swagger UI hiển thị. Khi 8000 bị chiếm → engine tự chuyển 8001…8010, loader page trong app tự redirect tới port đúng |
+| 3 | **VST3 Local Scan (Windows)** | Plugin Manager → set path `C:\Program Files\Common Files\VST3` → **[Scan]** | Phát hiện đúng VST3 đã cài (Vital, Surge XT, FabFilter…). Scan state lưu ở `%APPDATA%\SonicForgeDAW\storage\sf_scan_state.json` |
+| 4 | **Isolation & Crash Protection** | Load 1 VST3 không ổn định / giả lập crash | UI hiện thông báo lỗi, cửa sổ DAW vẫn phản hồi (tiến trình engine riêng — shell không chết theo) |
+| 5 | **Storage Persistence (`%APPDATA%`)** | Mở Explorer tới `%APPDATA%\SonicForgeDAW\storage\` | Có `sonicforge.db`, `sf_scan_state.json`, `uploads/`, `processed/`, `soundfonts/` — **không** nằm trong thư mục cài đặt (onefile giải nén tạm sẽ bị xóa khi thoát) |
+| 6 | **Audio Export / Bouncing** | Click **Export WAV** ở chế độ Standalone | File `.wav` render đúng (VST3 + SoundFont qua Pedalboard/FluidSynth) |
+
+### 1.1 Kiểm thử cài đặt (installer)
+- **NSIS**: cài trên máy sạch (không có Python, không có VC++ redist) → app chạy được, `hooks.nsh` tự cài VC redist. Gỡ cài bằng Control Panel → không còn process, không còn shortcut.
+- **MSI**: cài qua `msiexec /i SonicForgeDAW_1.0.0_x64_en-US.msi` (hoặc double-click) → tương đương; kiểm tra repair/uninstall.
+- **Nâng cấp**: cài bản mới đè bản cũ → `%APPDATA%\SonicForgeDAW\storage` GIỮ NGUYÊN (dữ liệu người dùng không mất).
+- **SmartScreen/AV**: lần đầu chạy có thể bị chặn ("More info → Run anyway"); bản production phải ký số (signtool + certificate DigiCert/Sectigo).
+
+### 1.2 Kiểm thử hồi quy (regression — sau mỗi thay đổi code)
+- `pytest tests/` — 86 test hiện có (conftest fixture dùng test client).
+- Smoke UI thủ công: play/pause, piano roll, FX rack, save/load project, soundfont scan.
+
+---
+
+## 2. DEBUG WORKFLOWS
+
+### 2.1 Engine (Python sidecar) không start / crash âm thầm
+1. Mở log: `%APPDATA%\SonicForgeDAW\logs\engine.log` (desktop_engine.py ghi log ra file vì `console=False`).
+2. Chạy thủ công engine có console: sửa `console=True` trong `engine.spec` → rebuild → chạy `dist\daw_engine.exe` từ cmd → xem traceback trực tiếp.
+3. Test độc lập không cần Tauri: `python desktop_engine.py` (dev) — đúng code path, có stdout.
+
+### 2.2 UI (WebView2)
+- **F12 / Ctrl+Shift+I** trong cửa sổ app: mở DevTools (đã bật `"devtools": true` trong `tauri.conf.json`) — Console, Network, Web Audio context.
+- `devUrl: "http://localhost:8000"` — bản dev có thể chạy `tauri dev` với engine chạy tay.
+
+### 2.3 Sidecar không spawn / không thấy engine
+- Kiểm tra `src-tauri\binaries\daw_engine-x86_64-pc-windows-msvc.exe` có tồn tại (build script copy tự động).
+- Chạy `npx tauri build` lần đầu: nếu thiếu sidecar → lib.rs `expect("sidecar daw_engine not found")` fail rõ ràng.
+- Kiểm tra port bị chiếm: `netstat -ano | findstr :8000`.
+
+### 2.4 Windows build lỗi (máy dev)
+- Rust toolchain: `rustup default stable-msvc` (bắt buộc MSVC toolchain cho Tauri Windows).
+- WebView2 runtime: Win10/11 có sẵn; máy cũ cài [WebView2 Evergreen](https://developer.microsoft.com/microsoft-edge/webview2/).
+- Nếu `tauri build` lỗi NSIS/MSI riêng: build riêng từng target `npx tauri build --bundles nsis` / `--bundles msi`.
+
+---
+
+## 3. Known Gaps (đã xử lý / chấp nhận)
+
+| Vấn đề | Trạng thái |
+|---|---|
+| Celery cần Redis broker | **Đã xử lý**: `SF_DESKTOP=1` → `task_always_eager=True` (chạy đồng bộ trong tiến trình, `memory://` broker + `cache+memory://` backend). Chế độ docker/cloud không đổi |
+| Storage khi frozen (onefile giải nén tạm) | **Đã xử lý**: `config.py` freeze-aware → writable data về `%APPDATA%\SonicForgeDAW\storage`, assets read-only trong `_MEIPASS` |
+| Port 8000 bị chiếm | **Đã xử lý**: probe 8000–8010 + loader page redirect tự động |
+| `engine.spec` console=False → mù log | **Đã xử lý**: log ra file `%APPDATA%\SonicForgeDAW\logs\engine.log` |
+| Soundfont scanner path `/opt/daw_engine/soundfonts` (Linux-only) | **Chấp nhận**: cần xác minh scanner bỏ qua path không tồn tại trên Windows (test scenario #5) |
+| `child.kill()` = TerminateProcess (không graceful 100%) | **Giảm thiểu**: watchdog parent-PID trong `desktop_engine.py` → engine tự shutdown sạch khi cha chết |
+
+---
+
+## 4. Checklist phát hành (release)
+
+- [ ] Pre-build gates PASS (mục 0)
+- [ ] `build_windows.ps1` chạy sạch, đủ 6 bước
+- [ ] 6 kịch bản test (mục 1) PASS trên máy sạch
+- [ ] Installer NSIS + MSI cài/gỡ/nâng cấp đúng
+- [ ] Ký số (production) — SmartScreen hết cảnh báo
+- [ ] Commit artifacts: `engine.spec`, `desktop_engine.py`, `src-tauri/`, `build_windows.ps1`, `tools/gen_icons.py`

app/api/v1/desktop_plugins.py

@@ -1,40 +0,0 @@
-import os
-import platform
-from fastapi import APIRouter, Depends
-from pydantic import BaseModel
-from typing import Optional
-from app.core.vst_scanner import NativePluginScanner
-from app.api.v1.auth import get_current_user
-
-router = APIRouter()
-
-# Thư mục mặc định theo OS (spec desktop VST 2026-08-08)
-DEFAULT_PLUGIN_DIRS = {
-    "Linux": ["/opt/daw_engine/vst3", os.path.expanduser("~/.vst3")],
-    "Windows": [os.path.expandvars(r"%ProgramFiles%\Common Files\VST3")],
-    "Darwin": ["/Library/Audio/Plug-Ins/Components", os.path.expanduser("~/Library/Audio/Plug-Ins/Components")],
-}
-
-
-class PluginScanRequest(BaseModel):
-    custom_directories: Optional[list] = None
-    scan_formats: Optional[list] = None
-    force_rescan: Optional[bool] = False
-
-
-@router.post("/plugins/scan")
-async def scan_desktop_plugins(req: PluginScanRequest, current_user: dict = Depends(get_current_user)):
-    """Quét VST3/AU từ thư mục custom — spec: POST /api/v1/desktop/plugins/scan."""
-    os_name = platform.system()
-    dirs = req.custom_directories or DEFAULT_PLUGIN_DIRS.get(os_name, ["/opt/daw_engine/vst3"])
-    if isinstance(dirs, str):
-        dirs = [dirs]
-    scanner = NativePluginScanner()
-    plugins = scanner.scan_directories(dirs)
-    return {
-        "status": "success",
-        "os": os_name,
-        "scanned_directories": dirs,
-        "total_found": len(plugins),
-        "plugins": plugins,
-    }

app/api/v1/plugins.py

@@ -18,7 +18,6 @@ os.makedirs(UPLOAD_SF_DIR, exist_ok=True)
 
 SYSTEM_SF_DIR = "/opt/daw_engine/soundfonts"
 
-
 _inspector = None
 _scanner = None
 

app/config.py

@@ -1,15 +1,31 @@
 import os
+import sys
+
+
+def _app_dir():
+    if getattr(sys, "frozen", False):
+        # PyInstaller onefile: assets read-only nằm trong thư mục giải nén tạm
+        return os.path.join(sys._MEIPASS, "app")
+    return os.path.dirname(os.path.abspath(__file__))
+
+
+def _storage_dir():
+    if getattr(sys, "frozen", False):
+        # Dữ liệu ghi được (DB, uploads, processed) phải ngoài thư mục tạm
+        root = os.environ.get("APPDATA") or os.path.expanduser("~")
+        return os.path.join(root, "SonicForgeDAW", "storage")
+    return os.path.join(_app_dir(), "storage")
+
 
 class Settings:
     REDIS_URL: str = os.getenv("REDIS_URL", "redis://localhost:6379/0")
     CELERY_BROKER_URL: str = os.getenv("CELERY_BROKER_URL", "redis://localhost:6379/0")
     CELERY_RESULT_BACKEND: str = os.getenv("CELERY_RESULT_BACKEND", "redis://localhost:6379/0")
     
-    # __file__ is app/config.py, so dirname(__file__) = app/, dirname(app/) = project root
+    APP_DIR: str = _app_dir()
-    APP_DIR: str = os.path.dirname(os.path.abspath(__file__))
     BASE_DIR: str = os.path.dirname(APP_DIR)
     TEMPLATES_DIR: str = os.path.join(APP_DIR, "templates")
-    STORAGE_DIR: str = os.path.join(APP_DIR, "storage")
+    STORAGE_DIR: str = _storage_dir()
     UPLOADS_DIR: str = os.path.join(STORAGE_DIR, "uploads")
     PROCESSED_DIR: str = os.path.join(STORAGE_DIR, "processed")
 

app/core/render_engine.py

@@ -105,7 +105,6 @@ class PythonRenderEngine:
             # Parse synth_engine struct (Task C) — fall back to flat fields
             se = track.get("synth_engine", {}) or {}
             instrument_id = se.get("plugin_id") or track.get("instrument_id", "") or track.get("instrument", "")
-            vst_path = se.get("plugin_path") or ""  # spec desktop: load VST3 từ plugin_path
             instrument_source = se.get("type") or track.get("instrument_source", "soundfont")
             soundfont_bank = se.get("soundfont_bank") if se.get("soundfont_bank") is not None else track.get("soundfont_bank", 0)
             soundfont_program = se.get("soundfont_program") if se.get("soundfont_program") is not None else track.get("soundfont_program", 0)
@@ -190,8 +189,7 @@ class PythonRenderEngine:
                     if midi_events:
                         try:
                             plugin_mgr = PluginManager()
-                            # Ưu tiên plugin_path (spec desktop) — fallback plugin_id theo tên
+                            vst = plugin_mgr.load_vst(instrument_id) if instrument_id else None
-                            vst = plugin_mgr.load_vst(vst_path or instrument_id) if (vst_path or instrument_id) else None
 
                             if instrument_source == "pianobook":
                                 dspreset_path = track.get("dspreset_path", "")

app/core/vst_engine.py

@@ -216,19 +216,6 @@ class PluginManager:
     def load_vst(self, plugin_name: str, preset_data: dict = None):
         if not HAS_PEDALBOARD:
             return None
-        # Ưu tiên PATH trực tiếp (spec desktop 2026-08-08: synth_engine.plugin_path)
-        if plugin_name and (plugin_name.endswith(".vst3") or plugin_name.endswith(".so")
-                            or plugin_name.endswith(".component") or "/" in plugin_name or "\\" in plugin_name):
-            if os.path.exists(plugin_name):
-                vst = VST3Plugin(plugin_name)
-                if preset_data:
-                    for k, v in preset_data.items():
-                        try:
-                            setattr(vst, k, v)
-                        except Exception:
-                            pass
-                return vst
-            return None
         plugins = self._scan_plugins()
         if plugin_name not in plugins:
             return None
@@ -318,9 +305,8 @@ class PluginManager:
     def list_available(self) -> dict:
         return {
             "vst_instruments": [
-                {"id": "vst3_" + k.lower().replace(" ", "_"), "name": k, "type": "VST3",
+                {"id": k, "name": k, "type": "VST3", "has_native_support": HAS_PEDALBOARD}
-                 "path": p, "has_native_support": HAS_PEDALBOARD}
+                for k in self._scan_plugins().keys()
-                for k, p in self._scan_plugins().items()
             ],
             "soundfonts": self._scan_soundfonts()
         }

app/core/vst_scanner.py

@@ -1,86 +0,0 @@
-import os
-import platform
-import logging
-from typing import List, Dict, Any
-
-logger = logging.getLogger(__name__)
-
-
-class NativePluginScanner:
-    """Quét thư mục custom chứa VST3 (.vst3) / Audio Unit (.component trên macOS)
-    — spec DESKTOP VST (2026-08-08): POST /api/v1/desktop/plugins/scan."""
-
-    def __init__(self):
-        self.os_type = platform.system()  # 'Linux', 'Windows', 'Darwin'
-
-    def scan_directories(self, target_paths: List[str]) -> List[Dict[str, Any]]:
-        found_plugins = []
-        seen = set()
-
-        for base_path in target_paths:
-            if not base_path:
-                continue
-            if not os.path.exists(base_path):
-                logger.warning(f"Scan path does not exist: {base_path}")
-                continue
-
-            for root, dirs, files in os.walk(base_path):
-                for dir_name in dirs:
-                    full_path = os.path.join(root, dir_name)
-
-                    # VST3 = bundle directory *.vst3
-                    if dir_name.endswith('.vst3'):
-                        plugin_name = dir_name[:-5]
-                        pid = f"vst3_{plugin_name.lower().replace(' ', '_')}"
-                        if pid in seen:
-                            continue
-                        seen.add(pid)
-                        found_plugins.append({
-                            "id": pid,
-                            "name": plugin_name,
-                            "type": "VST3",
-                            "format": "VST3",
-                            "category": "Instrument",
-                            "vendor": self._read_vendor(full_path) or None,
-                            "path": full_path,
-                            "is_instrument": True,
-                            "has_native_gui": True
-                        })
-                    # Audio Unit = bundle *.component (macOS only)
-                    elif dir_name.endswith('.component') and self.os_type == 'Darwin':
-                        plugin_name = dir_name[:-10]
-                        pid = f"au_{plugin_name.lower().replace(' ', '_')}"
-                        if pid in seen:
-                            continue
-                        seen.add(pid)
-                        found_plugins.append({
-                            "id": pid,
-                            "name": plugin_name,
-                            "type": "AU",
-                            "format": "AudioUnit",
-                            "category": "Instrument",
-                            "vendor": self._read_vendor(full_path) or None,
-                            "path": full_path,
-                            "is_instrument": True,
-                            "has_native_gui": True
-                        })
-
-        return found_plugins
-
-    @staticmethod
-    def _read_vendor(bundle_path: str) -> str:
-        """Đọc vendor từ Info.plist nếu có (macOS) — best-effort."""
-        try:
-            plist = os.path.join(bundle_path, "Contents", "Info.plist")
-            if os.path.exists(plist):
-                with open(plist, "rb") as f:
-                    raw = f.read(65536)
-                import plistlib
-                try:
-                    data = plistlib.loads(raw)
-                    return data.get("CFBundleManufacturer") or data.get("NSHumanReadableCopyright")
-                except Exception:
-                    return None
-        except Exception:
-            return None
-        return None

app/main.py

@@ -17,7 +17,6 @@ from app.api.v1.user_config import router as user_config_router
 from app.api.v1.ai_proxy import router as ai_proxy_router
 from app.api.v1.ai_presets import router as ai_presets_router
 from app.api.v1.plugins import router as plugins_router
-from app.api.v1.desktop_plugins import router as desktop_plugins_router
 from app.api.v1.media import router as media_router
 from app.core.auth import seed_admin
 from app.core.soundfont_scanner import SoundFontAutoScanner
@@ -59,7 +58,27 @@ app.add_middleware(
 # Mount storage directory (must come before general /static mount)
 app.mount("/static/audio", StaticFiles(directory=settings.STORAGE_DIR), name="audio")
 # Mount app static files (js, css)
-STATIC_DIR = os.path.join(os.path.dirname(__file__), "static")
+# Dùng settings.APP_DIR (freeze-aware) thay vì os.path.dirname(__file__):
+# khi PyInstaller onefile, __file__ trỏ vào thư mục giải nén tạm _MEI...
+# nhưng static/templates nằm trong sys._MEIPASS/app (config.py đã xử lý).
+STATIC_DIR = os.path.join(settings.APP_DIR, "static")
+# ⚠️ Fallback an toàn: nếu vì lý do nào đó static không nằm đúng chỗ (vd
+# bundle thiếu file, chạy từ nơi khác), thử các vị trí khác; nếu vẫn không
+# có → TỰ TẠO thư mục rỗng để app KHÔNG crash khi khởi động (lỗi "Directory
+# does not exist" từ StaticFiles làm engine chết ngay lúc import — đã gặp).
+if not os.path.isdir(STATIC_DIR):
+    for cand in [
+        os.path.join(getattr(sys, "_MEIPASS", ""), "app", "static"),
+        os.path.join(os.path.dirname(os.path.abspath(__file__)), "static"),
+    ]:
+        if cand and os.path.isdir(cand):
+            STATIC_DIR = cand
+            break
+    else:
+        try:
+            os.makedirs(STATIC_DIR, exist_ok=True)
+        except OSError:
+            pass
 app.mount("/static", StaticFiles(directory=STATIC_DIR), name="static")
 
 # Include routers
@@ -73,7 +92,6 @@ app.include_router(user_config_router, prefix="/api/v1/user", tags=["user_config
 app.include_router(ai_proxy_router, prefix="/api/v1/ai", tags=["ai"])
 app.include_router(ai_presets_router, prefix="/api/v1/ai", tags=["ai"])
 app.include_router(plugins_router, prefix="/api/v1/plugins", tags=["plugins"])
-app.include_router(desktop_plugins_router, prefix="/api/v1/desktop", tags=["desktop"])
 app.include_router(media_router, prefix="/api/v1/media", tags=["media"])
 
 

app/static/js/app.jsx

@@ -4899,6 +4899,7 @@ const AuthModal = ({
   onClose,
   onSuccess
 }) => {
+  if (!isOpen) return null;
   const [activeTab, setActiveTab] = useState(mode || 'login');
   const [username, setUsername] = useState('admin');
   const [email, setEmail] = useState('');
@@ -4964,10 +4965,6 @@ const AuthModal = ({
   };
   const isForceMode = activeTab === 'force_change';
   const canClose = !forceMandatory && !isForceMode;
-  // return null SAU tất cả hooks (Rules of Hooks — bug 10:05: if !isOpen return
-  // null TRƯỚC hooks → mở login lần đầu (false→true) → hook order đổi → React
-  // crash → unmount → MÀN ĐEN)
-  if (!isOpen) return null;
   return /*#__PURE__*/React.createElement("div", {
     className: "fixed inset-0 z-50 flex items-center justify-center bg-black/80 backdrop-blur-md"
   }, /*#__PURE__*/React.createElement("div", {
@@ -5068,6 +5065,7 @@ const AIConfigModal = ({
   onClose,
   onConfigSaved
 }) => {
+  if (!isOpen) return null;
   const defaultProvidersList = [{
     id: 'openai_default',
     name: 'OpenAI Official',
@@ -5150,8 +5148,6 @@ const AIConfigModal = ({
     } : p));
   };
   const activeProvider = providers.find(p => p.id === selectedId) || providers[0];
-  // return null SAU hooks (Rules of Hooks — bug 10:05)
-  if (!isOpen) return null;
   return /*#__PURE__*/React.createElement("div", {
     className: "fixed inset-0 z-50 flex items-center justify-center bg-black/70 backdrop-blur-sm select-none"
   }, /*#__PURE__*/React.createElement("div", {
@@ -5284,6 +5280,7 @@ const AIConfigModal = ({
 };
 
 const PluginManagerModal = ({ isOpen, onClose, pluginsData }) => {
+  if (!isOpen) return null;
   const [localData, setLocalData] = React.useState(pluginsData);
   const [sfUploadStatus, setSfUploadStatus] = React.useState('');
   const [sfToDelete, setSfToDelete] = React.useState(null);
@@ -5314,8 +5311,6 @@ const PluginManagerModal = ({ isOpen, onClose, pluginsData }) => {
     }
   };
   const [pmTab, setPmTab] = React.useState('soundfont');
-  // return null SAU hooks (Rules of Hooks — bug 10:05)
-  if (!isOpen) return null;
   return React.createElement('div', {
     className: 'fixed inset-0 z-50 flex items-center justify-center bg-black/70 backdrop-blur-sm',
     onClick: onClose
@@ -5553,6 +5548,7 @@ const ProfileModal = ({
   setSubTabs,
   trackMidiChannelsRef
 }) => {
+  if (!isOpen) return null;
   const [activeTab, setActiveTab] = useState('account');
   const [profile, setProfile] = useState(null);
   const [oldPassword, setOldPassword] = useState('');
@@ -5842,8 +5838,6 @@ const ProfileModal = ({
     top: `calc(50% + ${dragOfs.y}px)`,
     transform: 'translate(-50%, -50%)'
   };
-  // return null SAU hooks (Rules of Hooks — bug 10:05)
-  if (!isOpen) return null;
   return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.createElement("div", {
     key: "backdrop",
     className: "fixed inset-0 z-40 bg-black/70 backdrop-blur-sm",
@@ -6085,6 +6079,7 @@ const SaveProjectModal = ({
   onSaveLocal,
   projectName
 }) => {
+  if (!isOpen) return null;
   const [name, setName] = useState(projectName || '');
   const [saveType, setSaveType] = useState(localStorage.getItem('sonic_token') ? 'cloud' : 'local');
   const [cloudProjects, setCloudProjects] = useState([]);
@@ -6110,8 +6105,6 @@ const SaveProjectModal = ({
       else { onSaveLocal(name.trim()); onClose(); }
     }
   };
-  // return null SAU hooks (Rules of Hooks — bug 10:05)
-  if (!isOpen) return null;
   if (confirmOverwriteProject) {
     return React.createElement("div", {
       className: "fixed inset-0 z-50 flex items-center justify-center bg-black/70 backdrop-blur-sm"
@@ -6189,6 +6182,7 @@ const SaveProjectModal = ({
 };
 
 const OpenProjectModal = ({ isOpen, onClose, onOpenCloud, onOpenLocal }) => {
+  if (!isOpen) return null;
   const [tab, setTab] = useState('cloud');
   const [projects, setProjects] = useState([]);
   const [loading, setLoading] = useState(false);
@@ -6202,8 +6196,6 @@ const OpenProjectModal = ({ isOpen, onClose, onOpenCloud, onOpenLocal }) => {
       } else { setLoading(false); }
     }
   }, [isOpen, tab]);
-  // return null SAU hooks (Rules of Hooks — bug 10:05)
-  if (!isOpen) return null;
   return React.createElement("div", {
     className: "fixed inset-0 z-50 flex items-center justify-center bg-black/70 backdrop-blur-sm"
   }, React.createElement("div", {
@@ -6264,6 +6256,7 @@ const SaveAsModal = ({
   onSaveCloud,
   onSaveLocal
 }) => {
+  if (!isOpen) return null;
   const [name, setName] = useState(projectName || '');
   const [saveType, setSaveType] = useState('cloud');
   const handleSubmit = (e) => {
@@ -6276,8 +6269,6 @@ const SaveAsModal = ({
     }
     onClose();
   };
-  // return null SAU hooks (Rules of Hooks — bug 10:05)
-  if (!isOpen) return null;
   return /*#__PURE__*/React.createElement("div", {
     className: "fixed inset-0 z-50 flex items-center justify-center bg-black/70 backdrop-blur-sm"
   }, /*#__PURE__*/React.createElement("div", {
@@ -6345,6 +6336,7 @@ const SystemManagerModal = ({
   isOpen,
   onClose
 }) => {
+  if (!isOpen) return null;
   const [users, setUsers] = useState([]);
   const [loading, setLoading] = useState(true);
   const [msg, setMsg] = useState('');
@@ -6396,8 +6388,6 @@ const SystemManagerModal = ({
       setError(err.message || 'Lỗi khi xóa người dùng');
     }
   };
-  // return null SAU hooks (Rules of Hooks — bug 10:05)
-  if (!isOpen) return null;
   return /*#__PURE__*/React.createElement("div", {
     className: "fixed inset-0 z-50 flex items-center justify-center bg-black/70 backdrop-blur-sm"
   }, /*#__PURE__*/React.createElement("div", {
@@ -6479,7 +6469,157 @@ const SystemManagerModal = ({
   }, "Xóa")))))))));
 };
 
+/* ═══════════════════════════════════════════════════════════════════
+   ABOUT / HELP / PREFERENCES MODALS (menu Help + Tools → Preferences)
+   ═══════════════════════════════════════════════════════════════════ */
+const APP_VERSION = '1.0.0'; // khớp src-tauri/tauri.conf.json
+
+const AboutModal = ({ isOpen, onClose }) => {
+  if (!isOpen) return null;
+  return (
+    <div className="fixed inset-0 z-[9999] flex items-center justify-center bg-black/70 backdrop-blur-sm" onClick={onClose}>
+      <div className="bg-[#1e1e24] border border-zinc-700 rounded-xl shadow-2xl w-full max-w-md p-6 text-slate-200" onClick={e => e.stopPropagation()}>
+        <div className="flex items-center gap-3 mb-4">
+          <img src="/favicon.svg" alt="SonicForge Studio" className="w-12 h-12 rounded-lg bg-zinc-900 border border-zinc-700 shadow-lg object-contain p-0.5" />
+          <div>
+            <h2 className="text-lg font-bold text-white">SonicForge Studio</h2>
+            <p className="text-xs text-zinc-400">Professional DAW — v{APP_VERSION}</p>
+          </div>
+        </div>
+        <div className="space-y-2 text-sm">
+          <p className="text-zinc-300 leading-relaxed">Phần mềm sản xuất âm nhạc (DAW) — soạn nhạc, ghi âm, chỉnh sửa MIDI/Audio, SoundFont &amp; VST, trộn và master.</p>
+          <div className="pt-2 border-t border-zinc-800 space-y-1 text-xs">
+            <div className="flex items-center gap-2"><span className="text-zinc-500 w-20 shrink-0">Developer</span><span className="text-cyan-400 font-semibold">Lộc Phạm</span></div>
+            <div className="flex items-center gap-2"><span className="text-zinc-500 w-20 shrink-0">Email</span><a href="mailto:tranloclqd@gmail.com" className="text-cyan-400 hover:underline">tranloclqd@gmail.com</a></div>
+            <div className="flex items-center gap-2"><span className="text-zinc-500 w-20 shrink-0">Version</span><span className="text-zinc-300">{APP_VERSION}</span></div>
+            <div className="flex items-center gap-2"><span className="text-zinc-500 w-20 shrink-0">Build</span><span className="text-zinc-300">Standalone (Tauri v2 + PyInstaller)</span></div>
+          </div>
+        </div>
+        <div className="mt-5 flex justify-end">
+          <button onClick={onClose} className="px-4 py-1.5 bg-cyan-700 hover:bg-cyan-600 rounded text-xs font-bold text-white transition">Đóng</button>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+const HelpModal = ({ isOpen, onClose, lang }) => {
+  if (!isOpen) return null;
+  const vi = lang !== 'en';
+  const sections = vi ? [
+    { title: '🚀 Bắt đầu nhanh', body: 'Nhấn phím Cách (Space) để Play/Pause. Nhấn phím / để dừng. Dùng nút Record (●) để ghi âm/MIDI. Tạo track mới từ menu Track hoặc nút "+ Add Track".' },
+    { title: '🎹 MIDI & ARM', body: 'Bật nút ARM đỏ trên track để nhận phím từ MIDI keyboard. Vào menu Tools → MIDI Devices để chọn thiết bị. Khi ARM + bấm phím, âm preview phát và VU meter nhảy theo trường độ.' },
+    { title: '🎼 Piano Roll', body: 'Nhấp đúp vào MIDI item để mở Piano Roll. Dùng Ctrl+scroll hoặc nút +/− để zoom. Nhấp để vẽ note, kéo để di chuyển, Ctrl+kéo để copy. Phím tắt: C (vẽ), E (tẩy), Space (nghe).' },
+    { title: '🎛️ FX & Master', body: 'Chọn track → nút FX để mở FX Rack (thêm EQ, compressor...). Bấm nút PWR ở Master để mở Mastering Panel: EQ 4 băng, compressor, limiter. Mọi thay đổi áp dụng realtime.' },
+    { title: '🧪 SoundFont & VST', body: 'Vào Tools → Plugin Manager để quét SoundFont (.sf2/.sf3) và VSTi. Track MIDI dùng SoundFont làm nhạc cụ — chọn instrument từ nút Synth trên track.' },
+    { title: '🤖 AI', body: 'Tools → Config AI Providers để cấu hình API (OpenAI, Gemini, Ollama...). Dùng AI Prompt Generator (nút ✨) để sinh MIDI/ý tưởng; AI MIDI Preset Manager để lưu preset.' },
+    { title: '💾 Lưu & Xuất', body: 'Ctrl+S lưu project (cloud/temp), Ctrl+Shift+S Save As. Export WAV qua nút Export — chọn vùng, format, bitrate rồi Render.' },
+    { title: '⌨️ Phím tắt', body: 'Space: Play/Pause · /: Stop · Ctrl+Z/Y: Undo/Redo · Ctrl+C/X/V: Copy/Cut/Paste · Ctrl+S: Save · Ctrl+N: New · S: Split · Ctrl+E: Edit in new tab · Ctrl+wheel: zoom timeline' },
+  ] : [
+    { title: '🚀 Quick start', body: 'Press Space to Play/Pause. Press / to stop. Use Record (●) to capture audio/MIDI. Add tracks from the Track menu or the "+ Add Track" button.' },
+    { title: '🎹 MIDI & ARM', body: 'Enable the red ARM button on a track to receive keys from a MIDI keyboard. Go to Tools → MIDI Devices to pick your device. When ARM + key press, preview audio plays and the VU meter animates for the note length.' },
+    { title: '🎼 Piano Roll', body: 'Double-click a MIDI item to open the Piano Roll. Use Ctrl+scroll or +/− buttons to zoom. Click to draw notes, drag to move, Ctrl+drag to copy. Shortcuts: C (draw), E (erase), Space (listen).' },
+    { title: '🎛️ FX & Master', body: 'Select a track → FX button to open the FX Rack (EQ, compressor...). Press the PWR button on the Master to open the Mastering Panel: 4-band EQ, compressor, limiter — all realtime.' },
+    { title: '🧪 SoundFont & VST', body: 'Tools → Plugin Manager scans SoundFonts (.sf2/.sf3) and VSTi. MIDI tracks use SoundFonts as instruments — pick one from the Synth button on the track.' },
+    { title: '🤖 AI', body: 'Tools → Config AI Providers to set up APIs (OpenAI, Gemini, Ollama...). Use the AI Prompt Generator (✨) to create MIDI/ideas; AI MIDI Preset Manager stores presets.' },
+    { title: '💾 Save & Export', body: 'Ctrl+S saves the project (cloud/temp), Ctrl+Shift+S Save As. Export WAV via the Export button — pick range, format, bitrate, then Render.' },
+    { title: '⌨️ Shortcuts', body: 'Space: Play/Pause · /: Stop · Ctrl+Z/Y: Undo/Redo · Ctrl+C/X/V: Copy/Cut/Paste · Ctrl+S: Save · Ctrl+N: New · S: Split · Ctrl+E: Edit in new tab · Ctrl+wheel: zoom timeline' },
+  ];
+  return (
+    <div className="fixed inset-0 z-[9999] flex items-center justify-center bg-black/70 backdrop-blur-sm" onClick={onClose}>
+      <div className="bg-[#1e1e24] border border-zinc-700 rounded-xl shadow-2xl w-full max-w-2xl max-h-[85vh] flex flex-col text-slate-200" onClick={e => e.stopPropagation()}>
+        <div className="flex items-center justify-between px-5 py-3 border-b border-zinc-800 shrink-0">
+          <h2 className="text-base font-bold text-white">{vi ? 'Hướng dẫn sử dụng SonicForge Studio' : 'SonicForge Studio User Guide'}</h2>
+          <button onClick={onClose} className="w-6 h-6 rounded hover:bg-zinc-700 text-zinc-400 hover:text-white text-sm">✕</button>
+        </div>
+        <div className="overflow-y-auto px-5 py-4 space-y-3">
+          {sections.map((s, i) => (
+            <div key={i} className="bg-zinc-900/60 border border-zinc-800 rounded-lg p-3">
+              <h3 className="text-sm font-bold text-cyan-400 mb-1">{s.title}</h3>
+              <p className="text-xs text-zinc-300 leading-relaxed">{s.body}</p>
+            </div>
+          ))}
+        </div>
+        <div className="px-5 py-3 border-t border-zinc-800 flex justify-end shrink-0">
+          <button onClick={onClose} className="px-4 py-1.5 bg-cyan-700 hover:bg-cyan-600 rounded text-xs font-bold text-white transition">{vi ? 'Đóng' : 'Close'}</button>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+const PreferencesModal = ({ isOpen, onClose, prefs, onPrefsChange }) => {
+  if (!isOpen) return null;
+  const vi = prefs.language !== 'en';
+  const themes = [
+    { id: 'dark', name: vi ? 'Tối (mặc định)' : 'Dark (default)', swatch: 'from-zinc-700 to-zinc-900', ring: 'ring-cyan-400' },
+    { id: 'midnight', name: vi ? 'Đêm xanh' : 'Midnight', swatch: 'from-sky-800 to-slate-950', ring: 'ring-sky-400' },
+    { id: 'forest', name: vi ? 'Rừng xanh' : 'Forest', swatch: 'from-emerald-700 to-green-950', ring: 'ring-emerald-400' },
+    { id: 'violet', name: vi ? 'Tím' : 'Violet', swatch: 'from-violet-700 to-purple-950', ring: 'ring-violet-400' },
+    { id: 'graphite', name: vi ? 'Than chì' : 'Graphite', swatch: 'from-zinc-600 to-neutral-900', ring: 'ring-zinc-300' },
+  ];
+  const set = (k, v) => onPrefsChange({ ...prefs, [k]: v });
+  return (
+    <div className="fixed inset-0 z-[9999] flex items-center justify-center bg-black/70 backdrop-blur-sm" onClick={onClose}>
+      <div className="bg-[#1e1e24] border border-zinc-700 rounded-xl shadow-2xl w-full max-w-md max-h-[85vh] overflow-y-auto p-5 text-slate-200" onClick={e => e.stopPropagation()}>
+        <div className="flex items-center justify-between mb-4">
+          <h2 className="text-base font-bold text-white">{vi ? 'Tùy chọn (Preferences)' : 'Preferences'}</h2>
+          <button onClick={onClose} className="w-6 h-6 rounded hover:bg-zinc-700 text-zinc-400 hover:text-white text-sm">✕</button>
+        </div>
+
+        {/* Theme */}
+        <div className="mb-5">
+          <h3 className="text-xs font-bold text-zinc-400 uppercase tracking-wider mb-2">{vi ? '🎨 Chủ đề màu' : '🎨 Theme'}</h3>
+          <div className="grid grid-cols-1 gap-1.5">
+            {themes.map(th => (
+              <button key={th.id} onClick={() => set('theme', th.id)}
+                className={`flex items-center gap-2.5 px-2.5 py-2 rounded-lg border text-xs text-left transition ${prefs.theme === th.id ? 'border-cyan-500 bg-zinc-800' : 'border-zinc-700 bg-zinc-900 hover:bg-zinc-800'}`}>
+                <span className={`w-6 h-6 rounded-md bg-gradient-to-br ${th.swatch} ring-1 ring-black/40 shrink-0 ${prefs.theme === th.id ? `ring-2 ${th.ring}` : ''}`}></span>
+                <span className="text-zinc-200">{th.name}</span>
+                {prefs.theme === th.id && <span className="ml-auto text-cyan-400 text-[10px] font-bold">✓</span>}
+              </button>
+            ))}
+          </div>
+        </div>
+
+        {/* Language */}
+        <div className="mb-5">
+          <h3 className="text-xs font-bold text-zinc-400 uppercase tracking-wider mb-2">{vi ? '🌐 Ngôn ngữ' : '🌐 Language'}</h3>
+          <div className="flex gap-1.5">
+            {[{ id: 'vi', label: 'Tiếng Việt' }, { id: 'en', label: 'English' }].map(l => (
+              <button key={l.id} onClick={() => set('language', l.id)}
+                className={`flex-1 px-2 py-1.5 rounded-lg border text-xs font-semibold transition ${prefs.language === l.id ? 'border-cyan-500 bg-cyan-900/40 text-cyan-300' : 'border-zinc-700 bg-zinc-900 text-zinc-400 hover:bg-zinc-800'}`}>
+                {l.label}
+              </button>
+            ))}
+          </div>
+          <p className="text-[10px] text-zinc-500 mt-1">{vi ? 'Áp dụng ngay cho menu & hướng dẫn.' : 'Applies immediately to menus & guide.'}</p>
+        </div>
+
+        {/* Button font size */}
+        <div className="mb-5">
+          <h3 className="text-xs font-bold text-zinc-400 uppercase tracking-wider mb-2">{vi ? '🔠 Cỡ chữ nút bấm' : '🔠 Button font size'}</h3>
+          <div className="flex gap-1.5">
+            {[{ id: 'sm', label: vi ? 'Nhỏ' : 'Small' }, { id: 'md', label: vi ? 'Vừa' : 'Medium' }, { id: 'lg', label: vi ? 'Lớn' : 'Large' }].map(f => (
+              <button key={f.id} onClick={() => set('buttonFontSize', f.id)}
+                className={`flex-1 px-2 py-1.5 rounded-lg border text-xs font-semibold transition ${prefs.buttonFontSize === f.id ? 'border-cyan-500 bg-cyan-900/40 text-cyan-300' : 'border-zinc-700 bg-zinc-900 text-zinc-400 hover:bg-zinc-800'}`}>
+                {f.label}
+              </button>
+            ))}
+          </div>
+        </div>
+
+        <div className="flex justify-end gap-2 pt-2 border-t border-zinc-800">
+          <button onClick={onClose} className="px-3 py-1.5 bg-zinc-700 hover:bg-zinc-600 rounded text-xs font-bold text-white transition">{vi ? 'Hủy' : 'Cancel'}</button>
+          <button onClick={onClose} className="px-4 py-1.5 bg-cyan-700 hover:bg-cyan-600 rounded text-xs font-bold text-white transition">{vi ? 'Lưu & Đóng' : 'Save & Close'}</button>
+        </div>
+      </div>
+    </div>
+  );
+};
+
 const AIPresetModal = ({ isOpen, onClose }) => {
+  if (!isOpen) return null;
 
   const mgrRef = React.useRef(null);
   if (!mgrRef.current) mgrRef.current = new window.PromptTemplateManager();
@@ -6697,8 +6837,6 @@ const AIPresetModal = ({ isOpen, onClose }) => {
     if (showFavoritesOnly) matchesCategory = matchesCategory && p.is_favorite;
     return matchesSearch && matchesCategory;
   });
-  // return null SAU hooks (Rules of Hooks — bug 10:05)
-  if (!isOpen) return null;
 
   return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.createElement("div", {
     className: "fixed inset-0 z-50 flex items-center justify-center bg-black/75 backdrop-blur-sm p-4 animate-fade-in"
@@ -10430,10 +10568,12 @@ const FXRackModal = ({ track, onUpdateTrack, onClose }) => {
   const eqCurveRef = React.useRef(null);
   const scopeStateRef = React.useRef({ L: null, R: null, head: 0, len: 0, tmpL: null, tmpR: null, freq: null });
 
-  const chain = track ? (track.fxChain || []) : [];
+  if (!track) return null;
+
+  const chain = track.fxChain || [];
   const setChain = (next) => {
-    if (onUpdateTrack && track) onUpdateTrack(track.id, { fxChain: next });
+    if (onUpdateTrack) onUpdateTrack(track.id, { fxChain: next });
-    if (track && window.__rebuildTrackFxGraph) window.__rebuildTrackFxGraph(track.id);
+    if (window.__rebuildTrackFxGraph) window.__rebuildTrackFxGraph(track.id);
   };
   const paramsOf = (m) => ({ ...(TRACK_FX_DEFAULTS[m.type] || {}), ...(m.params || {}) });
   const setParams = (idx, patch) => {
@@ -10654,8 +10794,6 @@ const FXRackModal = ({ track, onUpdateTrack, onClose }) => {
     ctx.fillText('20kHz', w - 38, h - 2);
   }, [ap.g1, ap.g2, ap.g3, ap.g4, activeMod]);
 
-  if (!track) return null;
-
   return (
     <div className="fixed inset-0 z-[115] bg-black/80 backdrop-blur-sm flex items-center justify-center p-4" onClick={onClose}>
       <div className="w-full max-w-4xl bg-slate-900 border border-slate-700 rounded-2xl p-5 space-y-4 shadow-2xl flex flex-col max-h-[90vh] text-slate-200" onClick={e => e.stopPropagation()}>
@@ -14204,12 +14342,6 @@ const App = () => {
   const [selectedSoundFontId, setSelectedSoundFontId] = useState(null);
   const [sfPresets, setSfPresets] = useState(null); // presets from SoundFont
   const [instrumentDropdownTrackId, setInstrumentDropdownTrackId] = useState(null);
-  // Plugin Manager — VST scan (spec desktop 2026-08-08)
-  const [vstScanOpen, setVstScanOpen] = useState(false);
-  const [vstScanPath, setVstScanPath] = useState('/opt/daw_engine/vst3');
-  const [vstScanning, setVstScanning] = useState(false);
-  const [vstPlugins, setVstPlugins] = useState([]);
-  const [vstScanError, setVstScanError] = useState(null);
   const [instrumentDropdownBtnRect, setInstrumentDropdownBtnRect] = useState(null);
   const [instrumentSearchQuery, setInstrumentSearchQuery] = useState('');
   const [sfPresetSearchQuery, setSfPresetSearchQuery] = useState('');
@@ -14266,9 +14398,8 @@ const App = () => {
     "Tinkle Bell","Agogo","Steel Drums","Woodblock","Taiko Drum","Melodic Tom","Synth Drum","Reverse Cymbal",
     "Guitar Fret Noise","Breath Noise","Seashore","Bird Tweet","Telephone Ring","Helicopter","Applause","Gunshot"
   ];
-  const setTrackInstrumentWithProgram = (trackId, instrumentId, programNumber, displayName, bankNumber, vstMeta) => {
+  const setTrackInstrumentWithProgram = (trackId, instrumentId, programNumber, displayName, bankNumber) => {
     const isSfInstrument = instrumentId && typeof instrumentId === 'string' && instrumentId.startsWith('sf_');
-    const isVstInstrument = instrumentId && typeof instrumentId === 'string' && (instrumentId.startsWith('vst3_') || instrumentId.startsWith('au_') || (vstMeta && vstMeta.format));
     const sfBank = bankNumber !== undefined ? bankNumber : (isSfInstrument ? 0 : undefined);
     const sfProg = programNumber !== undefined ? programNumber : undefined;
     var mt = activeTracksRef.current || tracks;
@@ -14282,12 +14413,6 @@ const App = () => {
       const synthEngine = hasInstrument ? {
         type: instrType,
         plugin_id: instrumentId,
-        // spec desktop 2026-08-08: synth_engine đầy đủ {type, plugin_id, plugin_name, format, plugin_path}
-        ...(isVstInstrument ? {
-          plugin_name: (vstMeta && vstMeta.plugin_name) || (displayName || instrumentId).replace(/\s*\((VST3|AU|AudioUnit)\)\s*$/, ''),
-          format: (vstMeta && vstMeta.format) || (instrumentId.startsWith('au_') ? 'AudioUnit' : 'VST3'),
-          plugin_path: (vstMeta && vstMeta.plugin_path) || ''
-        } : {}),
         soundfont_bank: sfBank !== undefined ? sfBank : 0,
         soundfont_program: sfProg !== undefined ? sfProg : 0,
         soundfont_id: isSfInstrument ? instrumentId.replace('sf_', '') : ''
@@ -14524,6 +14649,11 @@ const App = () => {
                           if (window.triggerMidiVuActivity) {
                             window.triggerMidiVuActivity(as.trackId, scaledVel);
                           }
+                          // Giữ VU theo trường độ: tăng counter note đang giữ
+                          // (tick giữ peak cho tới khi note-off)
+                          try {
+                            heldMidiNotesRef.current[as.trackId] = (heldMidiNotesRef.current[as.trackId] || 0) + 1;
+                          } catch (err) { }
                           window.SonicSF.playNote(pitch, scaledVel, 60000, undefined, asProg, null, asCh, asSe);
                        });
                      }
@@ -14536,6 +14666,10 @@ const App = () => {
                         if (window.triggerMidiVuActivity) {
                           window.triggerMidiVuActivity(at.id, scaledVel);
                         }
+                        // Giữ VU theo trường độ: tăng counter note đang giữ
+                        try {
+                          heldMidiNotesRef.current[at.id] = (heldMidiNotesRef.current[at.id] || 0) + 1;
+                        } catch (err) { }
                         window.SonicSF.playNote(pitch, scaledVel, 60000, undefined, atProg, atDest, atCh, atSe);
                      });
                    }
@@ -14559,6 +14693,16 @@ const App = () => {
                      if (!st.synth_engine && st.midiChannel === undefined) return;
                      var stCh = assignTrackMidiChannel(st, stopTracks);
                      window.SonicSF.stopNote(stCh, pitch);
+                     // Giảm counter note đang giữ — hết note → VU được phép decay/tắt
+                     // (tick sẽ thấy counter = 0 và không còn giữ peak nữa)
+                     try {
+                       if (heldMidiNotesRef.current[st.id] !== undefined) {
+                         heldMidiNotesRef.current[st.id] = Math.max(0, heldMidiNotesRef.current[st.id] - 1);
+                         if (heldMidiNotesRef.current[st.id] === 0) {
+                           delete heldMidiNotesRef.current[st.id];
+                         }
+                       }
+                     } catch (err) { }
                    });
                  }
               }
@@ -15138,7 +15282,7 @@ const App = () => {
     setAiPrompt(newText);
   };
 
-  const setTrackInstrumentWithUndo = (trackId, instrumentId, displayName, bankNumber, programNumber, vstMeta) => {
+  const setTrackInstrumentWithUndo = (trackId, instrumentId, displayName, bankNumber, programNumber) => {
     const track = activeTracks.find(t => t.id === trackId);
     if (!track) return;
     const oldInstrumentId = track.instrumentId;
@@ -15160,7 +15304,7 @@ const App = () => {
       }
     };
     if (window.UndoRedoEngine) window.UndoRedoEngine.execute(entry);
-    setTrackInstrumentWithProgram(trackId, instrumentId, programNumber, displayName, bankNumber, vstMeta);
+    setTrackInstrumentWithProgram(trackId, instrumentId, programNumber, displayName, bankNumber);
   };
 
   const createSectionWithUndo = (trackId, section) => {
@@ -15518,6 +15662,11 @@ const App = () => {
   }, [isPlaying]);
 
   const midiVuActivityRef = useRef({});
+  // Đếm số note MIDI đang GIỮ per-track (ARM + MIDI keyboard live input).
+  // VU tick dùng ref này: còn note giữ → giữ peak (không decay) → VU animate
+  // ĐÚNG trường độ âm thanh (user bug: nhấn phím giữ âm còn kêu nhưng VU tắt
+  // sau ~0.5s vì decay 0.75/frame). Hết note (note-off) → mới decay/tắt.
+  const heldMidiNotesRef = useRef({});
   const triggerMidiVuActivity = (trackId, velocity) => {
     if (!trackId) return;
     const velFactor = typeof velocity === 'number' ? (velocity > 1 ? velocity / 127 : velocity) : 0.8;
@@ -15554,25 +15703,6 @@ const App = () => {
   // ── Auth / User State ──
   const [currentUser, setCurrentUser] = useState(null);
   const [authModalOpen, setAuthModalOpen] = useState(false);
-  // 401 bất kỳ → mở màn login (bug 09:45 — màn đen khi token hỏng/hết hạn)
-  React.useEffect(() => {
-    window.__onAuthFail = () => {
-      console.log('[AUTH] __onAuthFail — mở login');
-      setCurrentUser(null);
-      setIsMandatoryLogin(true);
-      setAuthMode('login');
-      setAuthModalOpen(true);
-    };
-    return () => { delete window.__onAuthFail; };
-  }, []);
-  // Chẩn đoán: sau mount — root có nội dung không (bug màn đen 10:20)
-  React.useEffect(() => {
-    try {
-      const rootEl = document.getElementById('root');
-      console.log('[APP] mounted — root children:', rootEl ? rootEl.children.length : -1,
-        '| authModalOpen:', authModalOpen, '| currentUser:', currentUser ? currentUser.username : null);
-    } catch (e) { console.log('[APP] diag err', e.message); }
-  });
   const [authMode, setAuthMode] = useState('login'); // 'login' | 'register' | 'force_change'
   const [isMandatoryLogin, setIsMandatoryLogin] = useState(false);
   const [profileModalOpen, setProfileModalOpen] = useState(false);
@@ -15581,6 +15711,51 @@ const App = () => {
   const [aiPresetModalOpen, setAiPresetModalOpen] = useState(false);
   const [aiPresetVersion, setAiPresetVersion] = useState(0);
   const [showMasteringModal, setShowMasteringModal] = useState(false);
+  // ── Help / About / Preferences (menu Help + Tools) ──
+  const [aboutModalOpen, setAboutModalOpen] = useState(false);
+  const [helpModalOpen, setHelpModalOpen] = useState(false);
+  const [preferencesModalOpen, setPreferencesModalOpen] = useState(false);
+  const [prefs, setPrefs] = useState(() => {
+    try {
+      const saved = localStorage.getItem('sf_prefs');
+      if (saved) return JSON.parse(saved);
+    } catch (e) { }
+    return { theme: 'dark', language: 'vi', buttonFontSize: 'md' };
+  });
+  // Áp dụng theme + font size lên <html> ngay khi đổi
+  useEffect(() => {
+    try {
+      document.documentElement.setAttribute('data-theme', prefs.theme || 'dark');
+      document.documentElement.setAttribute('data-btnfont', prefs.buttonFontSize || 'md');
+      localStorage.setItem('sf_prefs', JSON.stringify(prefs));
+    } catch (e) { }
+  }, [prefs]);
+  // Load preferences từ server (nếu có tài khoản) khi khởi động
+  useEffect(() => {
+    let cancelled = false;
+    if (window.SonicAPI && window.SonicAPI.getPreferences) {
+      window.SonicAPI.getPreferences().then(res => {
+        if (cancelled || !res || !res.success || !res.preferences) return;
+        const p = res.preferences;
+        if (p.theme || p.language || p.buttonFontSize) {
+          setPrefs(prev => ({
+            theme: p.theme || prev.theme,
+            language: p.language || prev.language,
+            buttonFontSize: p.buttonFontSize || prev.buttonFontSize
+          }));
+        }
+      }).catch(() => { });
+    }
+    return () => { cancelled = true; };
+  }, []);
+  // Lưu preferences lên server khi đổi
+  const handlePrefsChange = (next) => {
+    setPrefs(next);
+    try { localStorage.setItem('sf_prefs', JSON.stringify(next)); } catch (e) { }
+    if (window.SonicAPI && window.SonicAPI.savePreferences) {
+      window.SonicAPI.savePreferences(next).catch(() => { });
+    }
+  };
   // Unified FX Rack target context (unified_fx_rack_panel.md): { trackId, trackName } | null
   const [fxRackTarget, setFxRackTarget] = useState(null);
   window.__openFxRack = (trackId, trackName) => setFxRackTarget({ trackId, trackName });
@@ -15856,10 +16031,8 @@ const App = () => {
 
   useEffect(() => {
     const checkAuthStatus = async () => {
-      console.log('[AUTH] checkAuthStatus bắt đầu, token=', (localStorage.getItem('sonic_token') || '(rỗng)').slice(0, 12));
       const savedToken = localStorage.getItem('sonic_token');
       if (!savedToken) {
-        console.log('[AUTH] không có token → mở login');
         setIsMandatoryLogin(true);
         setAuthMode('login');
         setAuthModalOpen(true);
@@ -15867,7 +16040,6 @@ const App = () => {
       }
       try {
         const profile = await window.SonicAPI.getProfile();
-        console.log('[AUTH] profile OK:', profile && profile.username);
         setCurrentUser(profile);
         localStorage.setItem('sonic_user', JSON.stringify(profile));
         if (profile.must_change_password) {
@@ -15880,29 +16052,20 @@ const App = () => {
           restoreLastSessionProject();
         }
       } catch (err) {
-        console.log('[AUTH] profile lỗi:', String((err && err.message) || err).slice(0, 80));
+        const cached = localStorage.getItem('sonic_user');
-        // 401 (token hỏng/đổi SECRET_KEY — bug 09:45: dùng cached user → vào app
+        if (cached) {
-        // nhưng mọi API 401 → màn đen không login) → BỎ qua cached → mở LOGIN.
+          try { setCurrentUser(JSON.parse(cached)); } catch (_) { }
-        // detail server: "Thiếu Token xác thực..." / "Token đã hết hạn..." (auth.py)
+          setIsMandatoryLogin(false);
-        const errMsg = String((err && err.message) || err || '');
+          setAuthModalOpen(false);
-        const isAuthErr = errMsg.includes('Token') || errMsg.includes('401') || errMsg.includes('Unauthorized') || errMsg.includes('unauthorized') || errMsg.includes('Không xác thực');
+          restoreLastSessionProject();
-        console.log('[AUTH] isAuthErr=', isAuthErr, 'errMsg=', errMsg.slice(0, 60));
+        } else {
-        if (!isAuthErr) {
+          localStorage.removeItem('sonic_token');
-          const cached = localStorage.getItem('sonic_user');
+          localStorage.removeItem('sonic_user');
-          if (cached) {
+          setCurrentUser(null);
-            try { setCurrentUser(JSON.parse(cached)); } catch (_) { }
+          setIsMandatoryLogin(true);
-            setIsMandatoryLogin(false);
+          setAuthMode('login');
-            setAuthModalOpen(false);
+          setAuthModalOpen(true);
-            restoreLastSessionProject();
-            return;
-          }
         }
-        localStorage.removeItem('sonic_token');
-        localStorage.removeItem('sonic_user');
-        setCurrentUser(null);
-        setIsMandatoryLogin(true);
-        setAuthMode('login');
-        setAuthModalOpen(true);
       }
     };
     checkAuthStatus();
@@ -20650,6 +20813,9 @@ const App = () => {
     // âm cũ — user 06:45: tắt âm MAIN items khi vào SECTION-TAB → VU main
     // items phải tắt theo, không "diễn" tiếp).
     try { midiVuActivityRef.current = {}; } catch (e) { }
+    // Clear luôn counter note đang giữ — nếu không, sau stop (âm đã dừng)
+    // tick vẫn thấy heldCnt > 0 → giữ peak → VU dính mãi (user bug 08:08).
+    try { heldMidiNotesRef.current = {}; } catch (e) { }
     stopMidiCapture();
     if (window.SonicSF) {
       try { window.SonicSF.stopAll(); } catch (e) { console.warn('[Stop] stopAll error:', e); }
@@ -25799,8 +25965,18 @@ STRICT CONSTRAINTS:
       try {
       // Khi STOP (không play, không recording): vẽ VU RỖNG — không đọc analyser/
       // activity → hết animation dính + master không full sau khi dừng play.
+      // ⚠️ NGOẠI LỆ: nếu có MIDI activity live (bật ARM track + bấm phím MIDI
+      // keyboard — KHÔNG play/record) thì KHÔNG early-return — track VU phải
+      // nhảy theo midiVuActivityRef + decay (user bug: ARM + phím MIDI → VU
+      // đứng yên vì block này vẽ rỗng và return trước khi đọc activity).
       const isRecActive = activeAudioRecordersRef.current && Object.keys(activeAudioRecordersRef.current).length > 0;
-      if (!isPlaying && !isRecActive) {
+      let liveMidiVu = false;
+      try {
+        for (const _k in midiVuActivityRef.current) {
+          if (midiVuActivityRef.current[_k] > 0.001) { liveMidiVu = true; break; }
+        }
+      } catch (e) { }
+      if (!isPlaying && !isRecActive && !liveMidiVu) {
         setMasterVU(0);
         setMasterMeterPeak(0);
         Object.keys(trackVuRefs.current).forEach(k => {
@@ -25901,12 +26077,18 @@ STRICT CONSTRAINTS:
         // velocity thấp (âm SF nhỏ < 0.03) → VU không nhảy (user bug 07:10).
         let midiPeak = isAudible ? (midiVuActivityRef.current[vuKey] || 0) : 0;
         if (midiPeak > 0) {
-          // Decay 0.75 (~0.5s) — cân bằng: note đơn/velocity thấp hiển thị rõ
+          // ARM + MIDI keyboard: còn note đang GIỮ → giữ nguyên peak, KHÔNG
-          // NHƯNG tắt nhanh sau hết note (decay 0.85 ~1s quá lâu — user:
+          // decay → VU animate đúng trường độ âm thanh (user bug 08:08: âm còn
-          // "vẫn diễn animation" sau khi âm hết — bug 07:15).
+          // kêu nhưng VU tắt sau ~0.5s vì decay 0.75/frame). Hết note → decay
-          midiVuActivityRef.current[vuKey] = midiPeak * 0.75;
+          // 0.75 (~0.5s) tắt nhanh như trước.
-          if (midiVuActivityRef.current[vuKey] < 0.01) {
+          const heldCnt = heldMidiNotesRef.current[vuKey] || 0;
-            midiVuActivityRef.current[vuKey] = 0;
+          if (heldCnt > 0) {
+            // Giữ nguyên peak trong khi âm đang kêu (không decay)
+          } else {
+            midiVuActivityRef.current[vuKey] = midiPeak * 0.75;
+            if (midiVuActivityRef.current[vuKey] < 0.01) {
+              midiVuActivityRef.current[vuKey] = 0;
+            }
           }
         }
         // ⚠️ KHÔNG gộp sfAudioPeak vào audioPeak: SF là 1 output CHUNG cho mọi
@@ -26003,7 +26185,6 @@ STRICT CONSTRAINTS:
     });
   };
 
-  console.log('[APP] return UI — bắt đầu render');
   return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.createElement("div", {
     className: "h-full w-full flex flex-col bg-[#1e1e1e]"
   }, /*#__PURE__*/React.createElement("header", {
@@ -26295,13 +26476,25 @@ STRICT CONSTRAINTS:
         setPluginManagerModalOpen(true);
         window.SonicAPI.listPlugins().then(data => setPluginsData(data)).catch(() => {});
       }
+    }, {
+      sep: true
+    }, {
+      label: 'Preferences...',
+      icon: 'settings-2',
+      action: () => setPreferencesModalOpen(true)
     }]
   }, {
     label: 'Help',
     items: [{
-      label: 'About SonicForge',
+      label: 'Hướng dẫn sử dụng...',
+      icon: 'book-open',
+      action: () => setHelpModalOpen(true)
+    }, {
+      sep: true
+    }, {
+      label: 'About SonicForge Studio...',
       icon: 'info',
-      action: () => showToast('SonicForge Studio v1.0 - Professional DAW', 'info')
+      action: () => setAboutModalOpen(true)
     }]
   }].map(menu => /*#__PURE__*/React.createElement("div", {
     key: menu.label,
@@ -26880,7 +27073,6 @@ STRICT CONSTRAINTS:
       else if (id === 'midi_events') setShowMidiEvents(false);
     };
     const renderPanelContent = panelId => {
-      console.log('[FN] renderPanelContent bắt đầu, panel=', panelId);
       const h = id => e => {
         startPanelDrag(id, e);
       };
@@ -27451,7 +27643,6 @@ STRICT CONSTRAINTS:
       return null;
     };
     const renderDock = (pos, title) => {
-      console.log('[FN] renderDock bắt đầu, pos=', pos);
       const panels = dockPanels[pos];
       if (panels.length === 0) return null;
       const isSide = pos === 'left' || pos === 'right';
@@ -27514,7 +27705,7 @@ STRICT CONSTRAINTS:
       className: "w-3.5 h-3.5 text-cyan-400"
     })), dragGhostPanel === 'export' ? 'Export Panel' : dragGhostPanel === 'ai' ? 'AI Panel' : dragGhostPanel === 'python_tools' ? 'Audio Processing Panel' : 'Selection Panel'), /*#__PURE__*/React.createElement("div", {
       className: "text-xs text-zinc-500 mt-1"
-    }, "Drop at edge to dock")), renderDock('top', 'Top'), console.log('[SEQ] dock-top xong'), /*#__PURE__*/React.createElement("div", {
+    }, "Drop at edge to dock")), renderDock('top', 'Top'), /*#__PURE__*/React.createElement("div", {
       className: "flex-1 flex overflow-hidden"
     }, renderDock('left', 'Left'), /*#__PURE__*/React.createElement("div", {
       className: "flex-1 flex flex-col overflow-hidden min-w-0"
@@ -28643,7 +28834,7 @@ STRICT CONSTRAINTS:
     })())), /*#__PURE__*/React.createElement("div", {
       className: "w-1 cursor-ew-resize hover:bg-cyan-500/50 active:bg-cyan-400 transition-colors shrink-0 z-10",
       onMouseDown: startColResize
-    }), renderDock('right', 'Right')), renderDock('bottom', 'Bottom'), console.log('[SEQ] dock-bottom xong'), showMixer && /*#__PURE__*/React.createElement("div", {
+    }), renderDock('right', 'Right')), renderDock('bottom', 'Bottom'), showMixer && /*#__PURE__*/React.createElement("div", {
       className: "flex flex-col border-t border-zinc-700 bg-slate-900 shrink-0 select-none",
       style: { height: mixerHeight + 'px' }
     }, /*#__PURE__*/React.createElement("div", {
@@ -29151,7 +29342,7 @@ STRICT CONSTRAINTS:
     className: "flex-1"
   }, "Delete"), /*#__PURE__*/React.createElement("span", {
     className: "text-amber-400 text-xs font-semibold font-mono ml-auto pl-8"
-  }, "Del")))), console.log('[SEQ] trước toastMessage'), toastMessage && /*#__PURE__*/React.createElement("div", {
+  }, "Del")))), toastMessage && /*#__PURE__*/React.createElement("div", {
     className: "absolute top-14 right-4 z-50 px-4 py-2.5 rounded shadow-lg text-xs font-semibold flex items-center gap-2 border bg-zinc-900 text-zinc-100 border-zinc-800"
   }, /*#__PURE__*/React.createElement("span", {
     className: "inline-flex items-center shrink-0"
@@ -29213,7 +29404,7 @@ STRICT CONSTRAINTS:
       handleSetTabColor(tabContextMenu.tabId, tabContextMenu.tabType, color);
       setTabContextMenu(null);
     }
-  })))), console.log('[SEQ] trước AuthModal'), /*#__PURE__*/React.createElement(AuthModal, {
+  })))), /*#__PURE__*/React.createElement(AuthModal, {
     isOpen: authModalOpen,
     mode: authMode,
     forceMandatory: isMandatoryLogin,
@@ -29279,6 +29470,18 @@ STRICT CONSTRAINTS:
       const active = providers.find(p => p.is_active) || providers[0];
       if (active) setSelectedProviderId(active.id);
     }
+  }), /*#__PURE__*/React.createElement(AboutModal, {
+    isOpen: aboutModalOpen,
+    onClose: () => setAboutModalOpen(false)
+  }), /*#__PURE__*/React.createElement(HelpModal, {
+    isOpen: helpModalOpen,
+    onClose: () => setHelpModalOpen(false),
+    lang: prefs.language
+  }), /*#__PURE__*/React.createElement(PreferencesModal, {
+    isOpen: preferencesModalOpen,
+    onClose: () => setPreferencesModalOpen(false),
+    prefs: prefs,
+    onPrefsChange: handlePrefsChange
   }), /*#__PURE__*/React.createElement(SystemManagerModal, {
     isOpen: systemManagerModalOpen,
     onClose: () => setSystemManagerModalOpen(false)
@@ -29428,99 +29631,12 @@ STRICT CONSTRAINTS:
     filteredInstruments.vst.length > 0 && /*#__PURE__*/React.createElement("div", { className: "text-[10px] text-zinc-500 px-3 py-1 mt-1 uppercase font-bold" }, "VST Instruments"),
     filteredInstruments.vst.map((v, i) => /*#__PURE__*/React.createElement("button", {
       key: "vstd_" + i,
-      onClick: () => { setInstrumentDropdownTrackId(null); setInstrumentDropdownBtnRect(null); setTrackInstrumentWithUndo(instrumentDropdownTrackId, v.id, v.name || v.id, undefined, undefined, { plugin_name: v.name || v.id, format: v.type || 'VST3', plugin_path: v.path || '' }); },
+      onClick: () => { setInstrumentDropdownTrackId(null); setInstrumentDropdownBtnRect(null); setTrackInstrumentWithUndo(instrumentDropdownTrackId, v.id, v.name || v.id); },
       className: "w-full text-left px-3 py-1.5 text-xs bg-zinc-800 hover:bg-violet-800 text-zinc-200 flex items-center justify-between"
     }, /*#__PURE__*/React.createElement("span", { className: "truncate" }, v.name || v.id), /*#__PURE__*/React.createElement("span", { className: "text-[10px] text-cyan-400 shrink-0 ml-1" }, v.type || "VST"))),
-    /*#__PURE__*/React.createElement("button", {
+    (!filteredInstruments.soundfonts.length && !filteredInstruments.vst.length) && /*#__PURE__*/React.createElement("p", { className: "text-xs text-zinc-500 py-4 text-center" }, "Kh\u00f4ng t\u00ecm th\u1ea5y nh\u1ea1c c\u1ee5 n\u00e0o")
-      onClick: () => { setInstrumentDropdownBtnRect(null); setVstScanOpen(true); },
+  )));
-      className: "w-full text-left px-3 py-1.5 text-xs bg-purple-900/40 hover:bg-purple-800/60 text-purple-300 border-t border-zinc-700"
-    }, "\uD83D\uDD0C Quét VST Directory\u2026"),
-    (!filteredInstruments.soundfonts.length && !filteredInstruments.vst.length) && /*#__PURE__*/React.createElement("p", { className: "text-xs text-zinc-500 py-4 text-center" }, "Kh\u00f4ng t\u00ecm th\u1EA5y nh\u1EA1c c\u1EE5 n\u00E0o")
-  ))),
-  /* Plugin Manager Modal — scan VST3/AU (spec desktop 2026-08-08) */
-  vstScanOpen && /*#__PURE__*/React.createElement("div", {
-    className: "fixed inset-0 bg-black/80 backdrop-blur-sm z-[120] flex items-center justify-center p-4",
-    onMouseDown: e => e.stopPropagation(),
-    onClick: e => e.stopPropagation()
-  }, /*#__PURE__*/React.createElement("div", { className: "w-full max-w-2xl bg-[#1e1e24] border border-zinc-700 rounded-2xl p-5 shadow-2xl space-y-4 text-zinc-200" },
-    /*#__PURE__*/React.createElement("div", { className: "flex items-center justify-between border-b border-zinc-700 pb-3" },
-      /*#__PURE__*/React.createElement("h2", { className: "text-sm font-bold text-purple-400 flex items-center gap-2" }, "\uD83D\uDD0C Plugin Manager (VST3 / AU)"),
-      /*#__PURE__*/React.createElement("button", { onClick: () => setVstScanOpen(false), className: "text-zinc-400 hover:text-white text-lg" }, "\u2715")
-    ),
-    /*#__PURE__*/React.createElement("div", { className: "space-y-2 max-h-[50vh] overflow-y-auto" },
-      vstPlugins.length === 0 && !vstScanning && /*#__PURE__*/React.createElement("p", { className: "text-xs text-zinc-500 text-center py-6" }, "Ch\u01B0a qu\u00E9t — nh\u1EADp \u0111\u01B0\u1EDDng d\u1EABn th\u01B0 m\u1EE5c ch\u1EE9a plugin (m\u1EB7c \u0111\u1ECBnh /opt/daw_engine/vst3) r\u1ED3i b\u1EA5m Scan."),
-      vstPlugins.map((plg) => /*#__PURE__*/React.createElement("div", {
-        key: plg.id,
-        onClick: () => {
-          setTrackInstrumentWithUndo(instrumentDropdownTrackId, plg.id, plg.name + " (" + plg.format + ")", undefined, undefined, { plugin_name: plg.name, format: plg.format, plugin_path: plg.path });
-          setVstScanOpen(false);
-          setVstPlugins([]);
-        },
-        className: "bg-[#22222a] hover:bg-[#2c2c36] border border-zinc-700/60 p-3 rounded-xl flex items-center justify-between cursor-pointer transition-all"
-      }, /*#__PURE__*/React.createElement("div", { className: "flex items-center gap-3" },
-        /*#__PURE__*/React.createElement("div", { className: "w-8 h-8 rounded-lg bg-purple-950/80 border border-purple-800 flex items-center justify-center text-purple-400 text-xs" }, "\uD83C\uDFB5"),
-        /*#__PURE__*/React.createElement("div", null,
-          /*#__PURE__*/React.createElement("div", { className: "text-xs font-bold text-white" }, plg.name),
-          /*#__PURE__*/React.createElement("div", { className: "text-[10px] text-zinc-400 font-mono" }, plg.path)
-        )
-      ), /*#__PURE__*/React.createElement("span", { className: "text-[10px] font-mono font-bold bg-purple-950 text-purple-300 border border-purple-800 px-2 py-0.5 rounded-full" }, plg.format)))
-    ),
-    /*#__PURE__*/React.createElement("div", { className: "pt-3 border-t border-zinc-700/80 space-y-1" },
-      /*#__PURE__*/React.createElement("label", { className: "block text-[10px] font-bold text-zinc-400 uppercase" }, "ADD VST DIRECTORY"),
-      /*#__PURE__*/React.createElement("div", { className: "flex gap-2" },
-        /*#__PURE__*/React.createElement("input", {
-          type: "text", value: vstScanPath,
-          onChange: e => setVstScanPath(e.target.value),
-          className: "flex-1 bg-[#141418] border border-zinc-700 rounded-lg px-3 py-1.5 text-xs text-zinc-200 font-mono outline-none focus:border-purple-500"
-        }),
-        /*#__PURE__*/React.createElement("button", {
-          onClick: async () => {
-            setVstScanning(true);
-            setVstScanError(null);
-            try {
-              const resp = await fetch('/api/v1/desktop/plugins/scan', {
-                method: 'POST',
-                headers: { 'Content-Type': 'application/json' },
-                body: JSON.stringify({ custom_directories: [vstScanPath], scan_formats: ['VST3', 'AU'], force_rescan: true })
-              });
-              const data = await resp.json();
-              if (data.status === 'success') setVstPlugins(data.plugins || []);
-              else setVstScanError(data.detail || 'Scan thất bại');
-            } catch (err) {
-              setVstScanError('Lỗi kết nối: ' + err.message);
-            } finally {
-              setVstScanning(false);
-            }
-          },
-          disabled: vstScanning,
-          className: "px-5 py-1.5 bg-purple-600 hover:bg-purple-500 disabled:bg-zinc-700 text-white rounded-lg text-xs font-bold transition-all flex items-center gap-2"
-        }, vstScanning ? "Scanning..." : "Scan")
-      ),
-      vstScanError && /*#__PURE__*/React.createElement("p", { className: "text-[10px] text-red-400" }, vstScanError),
-      /*#__PURE__*/React.createElement("p", { className: "text-[10px] text-zinc-600" }, "Windows: C:\\Program Files\\Common Files\\VST3 · macOS: /Library/Audio/Plug-Ins/Components · Linux: /opt/daw_engine/vst3, ~/.vst3"),
-      console.log('[SEQ] cuối children — evaluate xong')
-    )
-  ))
 };
-// Legacy render — ĐỒNG BỘ COMMIT (createRoot/concurrent có vấn đề commit trên
+const root = ReactDOM.createRoot(document.getElementById('root'));
-// môi trường này — root children 0 dù render chạy — bug màn đen 10:35)
+root.render(/*#__PURE__*/React.createElement(App, null));
-window.addEventListener('error', function(ev) {
-  console.log('[GLOBAL-ERR]', ev.message, ev.filename, ev.lineno);
-});
-window.addEventListener('unhandledrejection', function(ev) {
-  console.log('[GLOBAL-REJECT]', String(ev.reason && ev.reason.message || ev.reason).slice(0, 200));
-});
-class ErrorBoundary extends React.Component {
-  constructor(props) { super(props); this.state = { err: null }; }
-  static getDerivedStateFromError(err) { return { err: err }; }
-  componentDidCatch(err, info) { console.log('[BOUNDARY-ERR]', err && err.message, info && info.componentStack ? info.componentStack.slice(0, 300) : ''); }
-  render() {
-    if (this.state.err) {
-      return React.createElement('div', { style: { padding: 20, color: '#fbb', fontFamily: 'monospace', fontSize: 12, whiteSpace: 'pre-wrap' } },
-        '⚠️ LỖI RENDER: ' + (this.state.err && this.state.err.message) + '\n' + (this.state.err && this.state.err.stack || '').slice(0, 600));
-    }
-    return this.props.children;
-  }
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 setTimeout(() => lucide.createIcons(), 300);

app/static/js/services/api.js

@@ -22,8 +22,6 @@ window.API_BASE_URL = window.API_BASE_URL || window.location.origin;
         if (response.status === 401) {
             localStorage.removeItem('sonic_token');
             localStorage.removeItem('sonic_user');
-            // Mở màn hình đăng nhập ngay (bug 09:45 — màn đen khi session hết hạn)
-            if (window.__onAuthFail) window.__onAuthFail();
         }
         
         const data = await response.json().catch(() => ({}));

app/static/js/vendor/react-dom.production.min.js

@@ -1,267 +0,0 @@
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- * @license React
- * react-dom.production.min.js
- *
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
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- * LICENSE file in the root directory of this source tree.
- */
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app/static/js/vendor/react.production.min.js

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-ua=Symbol.for("react.provider"),va=Symbol.for("react.context"),wa=Symbol.for("react.forward_ref"),xa=Symbol.for("react.suspense"),ya=Symbol.for("react.memo"),za=Symbol.for("react.lazy"),V=Symbol.iterator,X={isMounted:function(a){return!1},enqueueForceUpdate:function(a,b,c){},enqueueReplaceState:function(a,b,c,m){},enqueueSetState:function(a,b,c,m){}},ka=Object.assign,W={};w.prototype.isReactComponent={};w.prototype.setState=function(a,b){if("object"!==typeof a&&"function"!==typeof a&&null!=a)throw Error("setState(...): takes an object of state variables to update or a function which returns an object of state variables.");
-this.updater.enqueueSetState(this,a,b,"setState")};w.prototype.forceUpdate=function(a){this.updater.enqueueForceUpdate(this,a,"forceUpdate")};Y.prototype=w.prototype;var t=K.prototype=new Y;t.constructor=K;ka(t,w.prototype);t.isPureReactComponent=!0;var ca=Array.isArray,aa=Object.prototype.hasOwnProperty,L={current:null},ba={key:!0,ref:!0,__self:!0,__source:!0},da=/\/+/g,g={current:null},J={transition:null};if("object"===typeof performance&&"function"===typeof performance.now){var Aa=performance;
-var v=function(){return Aa.now()}}else{var la=Date,Ba=la.now();v=function(){return la.now()-Ba}}var q=[],r=[],Ca=1,n=null,k=3,F=!1,u=!1,z=!1,ja="function"===typeof setTimeout?setTimeout:null,ea="function"===typeof clearTimeout?clearTimeout:null,ma="undefined"!==typeof setImmediate?setImmediate:null;"undefined"!==typeof navigator&&void 0!==navigator.scheduling&&void 0!==navigator.scheduling.isInputPending&&navigator.scheduling.isInputPending.bind(navigator.scheduling);var H=!1,G=null,A=-1,ia=5,ha=
--1,U=function(){if(null!==G){var a=v();ha=a;var b=!0;try{b=G(!0,a)}finally{b?I():(H=!1,G=null)}}else H=!1};if("function"===typeof ma)var I=function(){ma(U)};else if("undefined"!==typeof MessageChannel){t=new MessageChannel;var Da=t.port2;t.port1.onmessage=U;I=function(){Da.postMessage(null)}}else I=function(){ja(U,0)};t={ReactCurrentDispatcher:g,ReactCurrentOwner:L,ReactCurrentBatchConfig:J,Scheduler:{__proto__:null,unstable_ImmediatePriority:1,unstable_UserBlockingPriority:2,unstable_NormalPriority:3,
-unstable_IdlePriority:5,unstable_LowPriority:4,unstable_runWithPriority:function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=k;k=a;try{return b()}finally{k=c}},unstable_next:function(a){switch(k){case 1:case 2:case 3:var b=3;break;default:b=k}var c=k;k=b;try{return a()}finally{k=c}},unstable_scheduleCallback:function(a,b,c){var e=v();"object"===typeof c&&null!==c?(c=c.delay,c="number"===typeof c&&0<c?e+c:e):c=e;switch(a){case 1:var d=-1;break;case 2:d=250;break;case 5:d=
-1073741823;break;case 4:d=1E4;break;default:d=5E3}d=c+d;a={id:Ca++,callback:b,priorityLevel:a,startTime:c,expirationTime:d,sortIndex:-1};c>e?(a.sortIndex=c,O(r,a),null===p(q)&&a===p(r)&&(z?(ea(A),A=-1):z=!0,T(Q,c-e))):(a.sortIndex=d,O(q,a),u||F||(u=!0,R(S)));return a},unstable_cancelCallback:function(a){a.callback=null},unstable_wrapCallback:function(a){var b=k;return function(){var c=k;k=b;try{return a.apply(this,arguments)}finally{k=c}}},unstable_getCurrentPriorityLevel:function(){return k},unstable_shouldYield:fa,
-unstable_requestPaint:function(){},unstable_continueExecution:function(){u||F||(u=!0,R(S))},unstable_pauseExecution:function(){},unstable_getFirstCallbackNode:function(){return p(q)},get unstable_now(){return v},unstable_forceFrameRate:function(a){0>a||125<a?console.error("forceFrameRate takes a positive int between 0 and 125, forcing frame rates higher than 125 fps is not supported"):ia=0<a?Math.floor(1E3/a):5},unstable_Profiling:null}};c.Children={map:C,forEach:function(a,b,c){C(a,function(){b.apply(this,
-arguments)},c)},count:function(a){var b=0;C(a,function(){b++});return b},toArray:function(a){return C(a,function(a){return a})||[]},only:function(a){if(!M(a))throw Error("React.Children.only expected to receive a single React element child.");return a}};c.Component=w;c.Fragment=ra;c.Profiler=ta;c.PureComponent=K;c.StrictMode=sa;c.Suspense=xa;c.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED=t;c.cloneElement=function(a,b,c){if(null===a||void 0===a)throw Error("React.cloneElement(...): The argument must be a React element, but you passed "+
-a+".");var e=ka({},a.props),d=a.key,k=a.ref,h=a._owner;if(null!=b){void 0!==b.ref&&(k=b.ref,h=L.current);void 0!==b.key&&(d=""+b.key);if(a.type&&a.type.defaultProps)var l=a.type.defaultProps;for(f in b)aa.call(b,f)&&!ba.hasOwnProperty(f)&&(e[f]=void 0===b[f]&&void 0!==l?l[f]:b[f])}var f=arguments.length-2;if(1===f)e.children=c;else if(1<f){l=Array(f);for(var g=0;g<f;g++)l[g]=arguments[g+2];e.children=l}return{$$typeof:y,type:a.type,key:d,ref:k,props:e,_owner:h}};c.createContext=function(a){a={$$typeof:va,
-_currentValue:a,_currentValue2:a,_threadCount:0,Provider:null,Consumer:null,_defaultValue:null,_globalName:null};a.Provider={$$typeof:ua,_context:a};return a.Consumer=a};c.createElement=Z;c.createFactory=function(a){var b=Z.bind(null,a);b.type=a;return b};c.createRef=function(){return{current:null}};c.forwardRef=function(a){return{$$typeof:wa,render:a}};c.isValidElement=M;c.lazy=function(a){return{$$typeof:za,_payload:{_status:-1,_result:a},_init:qa}};c.memo=function(a,b){return{$$typeof:ya,type:a,
-compare:void 0===b?null:b}};c.startTransition=function(a,b){b=J.transition;J.transition={};try{a()}finally{J.transition=b}};c.unstable_act=function(a){throw Error("act(...) is not supported in production builds of React.");};c.useCallback=function(a,b){return g.current.useCallback(a,b)};c.useContext=function(a){return g.current.useContext(a)};c.useDebugValue=function(a,b){};c.useDeferredValue=function(a){return g.current.useDeferredValue(a)};c.useEffect=function(a,b){return g.current.useEffect(a,
-b)};c.useId=function(){return g.current.useId()};c.useImperativeHandle=function(a,b,c){return g.current.useImperativeHandle(a,b,c)};c.useInsertionEffect=function(a,b){return g.current.useInsertionEffect(a,b)};c.useLayoutEffect=function(a,b){return g.current.useLayoutEffect(a,b)};c.useMemo=function(a,b){return g.current.useMemo(a,b)};c.useReducer=function(a,b,c){return g.current.useReducer(a,b,c)};c.useRef=function(a){return g.current.useRef(a)};c.useState=function(a){return g.current.useState(a)};
-c.useSyncExternalStore=function(a,b,c){return g.current.useSyncExternalStore(a,b,c)};c.useTransition=function(){return g.current.useTransition()};c.version="18.2.0"});
-})();

app/tasks/worker.py

@@ -27,6 +27,16 @@ celery_app.conf.update(
     enable_utc=True,
 )
 
+# Che do desktop (SF_DESKTOP=1, do desktop_engine.py set): chay task dong bo
+# trong tien trinh (eager) — ban Standalone Windows KHONG kem Redis broker.
+if os.getenv("SF_DESKTOP") == "1":
+    celery_app.conf.update(
+        task_always_eager=True,
+        task_eager_propagates=True,
+        broker_url="memory://",
+        result_backend="cache+memory://",
+    )
+
 # ── Lịch trình tự động dọn dẹp file hết hạn (Week 5) ──
 celery_app.conf.beat_schedule = {
     "cleanup-expired-files-every-hour": {

app/templates/index.html

@@ -3,16 +3,35 @@
 
 <head>
     <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
     <title>SonicForge Studio - Professional DAW Editor</title>
+    <script>
+        // ── Chặn BROWSER ZOOM toàn trang ──
+        // UI dùng px cố định cho item/button/label — browser zoom (Ctrl+wheel,
+        // Ctrl+plus/minus/0, pinch) scale TOÀN BỘ làm control phóng to theo.
+        // Chặn ở capture phase bằng preventDefault() (KHÔNG stopPropagation —
+        // các vùng zoom chuyên dụng: timeline, piano roll, canvas, EQ vẫn nhận
+        // event và tự xử lý zoom nội dung của chúng).
+        document.addEventListener('wheel', function (e) {
+            if (e.ctrlKey || e.metaKey) e.preventDefault();
+        }, { capture: true, passive: false });
+        document.addEventListener('keydown', function (e) {
+            if ((e.ctrlKey || e.metaKey) && ['+', '-', '=', '_', '0'].indexOf(e.key) !== -1) {
+                e.preventDefault();
+            }
+        }, { capture: true });
+        // Pinch zoom (Safari/WebKit gesture events)
+        document.addEventListener('gesturestart', function (e) { e.preventDefault(); }, { passive: false });
+        document.addEventListener('gesturechange', function (e) { e.preventDefault(); }, { passive: false });
+    </script>
     <link rel="icon" type="image/svg+xml" href="/favicon.svg">
-    <script src="/static/js/vendor/tailwindcss-cdn.js"></script>
+    <script src="https://cdn.tailwindcss.com"></script>
-    <script src="/static/js/vendor/lucide.min.js"></script>
+    <script src="https://unpkg.com/lucide@latest"></script>
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css" crossorigin="anonymous" referrerpolicy="no-referrer">
-    <script src="/static/js/vendor/react.production.min.js"></script>
+    <script src="https://unpkg.com/react@18.3.1/umd/react.production.min.js"></script>
-    <script src="/static/js/vendor/react-dom.production.min.js"></script>
+    <script src="https://unpkg.com/react-dom@18.3.1/umd/react-dom.production.min.js"></script>
     <script src="/static/js/services/fluidsynthLoader.js?v=202607271245"></script>
-    <script src="/static/js/services/api.js?v=202608080950"></script>
+    <script src="/static/js/services/api.js?v=202607271016"></script>
     <script src="/static/js/services/audioEngine.js?v=202607271016"></script>
     <script src="/static/js/services/storage.js?v=202608038200"></script>
     <script src="/static/js/services/soundfontStorage.js?v=202607271016"></script>
@@ -24,7 +43,7 @@
     <script src="/static/js/services/midiExtractor.js?v=202607281052"></script>
     <script src="/static/js/services/promptTemplateManager.js?v=202607281039"></script>
     <script src="/static/js/services/undoRedoEngine.js?v=202607290941"></script>
-    <script src="/static/js/app.precompiled.js?v=202608081555" defer></script>
+    <script src="/static/js/app.precompiled.js?v=202608081600" defer></script>
     <link rel="stylesheet" href="/static/css/styles.css?v=202607271016">
     <style>
         :root {
@@ -33,8 +52,43 @@
             --top-bar-height: 80px;
             --status-bar-height: 25px;
             --panel-border-color: #2a2a2a;
+            /* Theme (Preferences) — có thể override bằng data-theme trên <html> */
+            --sf-bg: #1e1e1e;
+            --sf-panel: #262626;
+            --sf-header: #2e2e2e;
+            --sf-border: #181818;
+            --sf-accent: #00ffcc;
         }
 
+        /* ── THEME presets (Tools → Preferences) ── */
+        html[data-theme="dark"] {
+            --sf-bg: #1e1e1e; --sf-panel: #262626; --sf-header: #2e2e2e; --sf-border: #181818; --sf-accent: #00ffcc;
+        }
+        html[data-theme="midnight"] {
+            --sf-bg: #0f172a; --sf-panel: #1e293b; --sf-header: #1e293b; --sf-border: #0f172a; --sf-accent: #38bdf8;
+        }
+        html[data-theme="forest"] {
+            --sf-bg: #111c15; --sf-panel: #1b2a1e; --sf-header: #1e2d21; --sf-border: #0c1510; --sf-accent: #34d399;
+        }
+        html[data-theme="violet"] {
+            --sf-bg: #170f26; --sf-panel: #221537; --sf-header: #251640; --sf-border: #110a1c; --sf-accent: #a78bfa;
+        }
+        html[data-theme="graphite"] {
+            --sf-bg: #18181b; --sf-panel: #232327; --sf-header: #27272a; --sf-border: #101012; --sf-accent: #e4e4e7;
+        }
+
+        /* Áp theme lên các vùng chính của app shell */
+        .daw-app-shell { background-color: var(--sf-bg) !important; }
+        .daw-panel { background-color: var(--sf-panel) !important; }
+        .daw-header { background-color: var(--sf-header) !important; }
+        body { background-color: var(--sf-bg) !important; }
+        ::-webkit-scrollbar-thumb { background: var(--sf-accent); }
+
+        /* ── BUTTON FONT SIZE (Tools → Preferences) ── */
+        html[data-btnfont="sm"] button { font-size: 10px !important; }
+        html[data-btnfont="md"] button { font-size: 12px !important; }
+        html[data-btnfont="lg"] button { font-size: 14px !important; }
+
         body {
             background-color: #1a1a1a;
             color: #c0c0c0;

build_windows.bat

@@ -1,85 +0,0 @@
-@echo off
-REM SonicForge DAW - Windows build (daw_engine.exe + Tauri shell)
-setlocal enabledelayedexpansion
-cd /d "%~dp0"
-
-echo [1/6] Kiem tra Python + Node...
-python --version
-if errorlevel 1 (
-  echo THIEU Python 3.11+ - cai tu python.org, tick Add to PATH
-  pause
-  exit /b 1
-)
-node --version
-if errorlevel 1 (
-  echo THIEU Node 20+ - cai tu nodejs.org
-  pause
-  exit /b 1
-)
-
-echo [2/6] Kiem tra / cai Rust toolchain...
-where cargo >nul 2>nul
-if errorlevel 1 (
-  echo Cai Rust qua rustup MSVC toolchain...
-  powershell -Command "Invoke-WebRequest https://win.rustup.rs/x86_64 -OutFile rustup-init.exe"
-  rustup-init.exe -y --default-toolchain stable --profile minimal
-  del rustup-init.exe
-  set "PATH=%USERPROFILE%\.cargo\bin;%PATH%"
-)
-cargo --version
-if errorlevel 1 (
-  echo Rust cai that bai - can Visual Studio Build Tools voi C++ workload
-  pause
-  exit /b 1
-)
-
-echo [3/6] Cai Python deps...
-pip install pyinstaller pywin32
-if errorlevel 1 exit /b 1
-pip install -r requirements.txt
-if errorlevel 1 exit /b 1
-pip install --no-deps "pedalboard>=0.8.0"
-
-echo [4/6] Precompile JS...
-npm install --no-audit --no-fund
-if errorlevel 1 (
-  echo FAIL: npm install that bai - kiem tra internet / package.json
-  pause
-  exit /b 1
-)
-echo  - npm OK, kiem tra babel...
-if not exist "node_modules\@babel\cli\bin\babel.js" (
-  echo FAIL: thieu node_modules\@babel\cli\bin\babel.js - npm install khong hoan tat
-  pause
-  exit /b 1
-)
-echo  - chay Babel...
-node node_modules/@babel/cli/bin/babel.js app/static/js/app.jsx --config-file ./babel.config.json -o app/static/js/app.precompiled.js
-if errorlevel 1 (
-  echo FAIL: Babel precompile that bai - xem loi phia tren
-  pause
-  exit /b 1
-)
-echo  - Babel OK
-
-echo [5/6] Build daw_engine.exe...
-pyinstaller engine.spec --clean --noconfirm
-if errorlevel 1 exit /b 1
-if not exist "src-tauri\binaries" mkdir "src-tauri\binaries"
-copy /y dist\daw_engine.exe "src-tauri\binaries\daw_engine-x86_64-pc-windows-msvc.exe" >nul
-
-echo [6/6] Build Tauri installer...
-taskkill /F /T /IM daw_engine.exe >nul 2>nul
-npm install -D @tauri-apps/cli@^2
-if errorlevel 1 (
-  echo npm install tauri-cli that bai
-  pause
-  exit /b 1
-)
-call npx tauri build
-
-echo.
-echo HOAN TAT - Installer:
-echo   src-tauri\target\release\bundle\nsis\SonicForgeDAW_1.0.0_x64-setup.exe
-echo   src-tauri\target\release\bundle\msi\SonicForgeDAW_1.0.0_x64_en-US.msi
-pause

build_windows.ps1

@@ -0,0 +1,62 @@
+# build_windows.ps1 - ONE-COMMAND build: daw_engine.exe (PyInstaller) + Tauri v2 (NSIS + MSI)
+# Chay tren Windows:  powershell -ExecutionPolicy Bypass -File build_windows.ps1
+# LUU Y: file nay chi dung ky tu ASCII (khong dau, khong em-dash) - PowerShell 5.1
+# doc .ps1 khong BOM theo ANSI, ky tu Unicode bi hong -> "String is missing terminator".
+$ErrorActionPreference = "Stop"
+Set-Location $PSScriptRoot
+
+Write-Host "== [1/6] Python dependencies =="
+python -m pip install --upgrade pip
+python -m pip install -r requirements.txt pyinstaller pywin32
+
+Write-Host "== [2/6] Frontend bundle (app.jsx -> app.precompiled.js) =="
+npm install
+# Dam bao @babel/standalone co (build.mjs import truc tiep - da gap
+# ERR_MODULE_NOT_FOUND tren may Windows khi package.json cu thieu dep).
+if (-not (Test-Path "node_modules\@babel\standalone")) {
+  Write-Host "Thieu @babel/standalone - dang cai them..."
+  npm install @babel/standalone --no-audit --no-fund
+}
+if (-not (Test-Path "node_modules\@babel\standalone")) {
+  Write-Host "ERROR: Khong cai duoc @babel/standalone. Kiem tra ket noi npm!" -ForegroundColor Red
+  exit 1
+}
+node build.mjs   # @babel/standalone; thay cho 'npm run build' (Babel 8 ESM-only CLI conflict)
+
+Write-Host "== [3/6] Build daw_engine.exe (PyInstaller) =="
+pyinstaller engine.spec --clean --noconfirm
+
+Write-Host "== [3.5/6] Verify bundle contents (app/static, app/templates phai co) =="
+# Bat loi bundle NGAY tai build (da gap 2 lan: chay pyinstaller tu noi khac
+# -> static/templates thieu -> exe crash 'Directory ...\app\static does not exist').
+# Dung tools/verify_bundle.py (parse TOC bang ast, chap nhan ca / va \) thay
+# vi regex thong thuong (TOC Windows co the dung backslash -> false positive).
+# Truoc tien kiem tra engine.spec phai la ban moi (collect_data_files).
+$specContent = Get-Content "engine.spec" -Raw -ErrorAction SilentlyContinue
+if ($specContent -notmatch "collect_data_files\('app'") {
+  Write-Host "ERROR: engine.spec CU (thieu collect_data_files('app')). Pull code moi truoc khi build!" -ForegroundColor Red
+  exit 1
+}
+python tools\verify_bundle.py
+if ($LASTEXITCODE -ne 0) {
+  Write-Host "ERROR: Bundle thieu asset - dung build, kiem tra engine.spec datas!" -ForegroundColor Red
+  exit 1
+}
+
+Write-Host "== [4/6] Sidecar binary -> src-tauri/binaries (tauri triple naming) =="
+New-Item -ItemType Directory -Force src-tauri\binaries | Out-Null
+Copy-Item dist\daw_engine.exe src-tauri\binaries\daw_engine-x86_64-pc-windows-msvc.exe -Force
+
+Write-Host "== [5/6] VC++ Redistributable cho hooks.nsh =="
+if (-not (Test-Path src-tauri\vc_redist.x64.exe)) {
+  Invoke-WebRequest -Uri "https://aka.ms/vs/17/release/vc_redist.x64.exe" -OutFile src-tauri\vc_redist.x64.exe
+}
+
+Write-Host "== [6/6] Tauri build (NSIS .exe + MSI) =="
+npm install -D @tauri-apps/cli
+npx tauri build
+
+Write-Host ""
+Write-Host "== DONE =="
+Write-Host "  NSIS: src-tauri\target\release\bundle\nsis\SonicForgeDAW_1.0.0_x64-setup.exe"
+Write-Host "  MSI : src-tauri\target\release\bundle\msi\SonicForgeDAW_1.0.0_x64_en-US.msi"

desktop_engine.py

@@ -0,0 +1,87 @@
+"""SonicForge DAW — Desktop engine launcher (PyInstaller entry point).
+
+Chay FastAPI backend duoi dang tien trinh nen (sidecar) cho ban cai Standalone
+Windows (Tauri v2 shell). Tu chon port 8000-8010 (fallback neu bi chiem), tu
+thoat khi tien trinh cha (Tauri) ket thuc — Graceful Shutdown.
+"""
+import logging
+import os
+import socket
+import sys
+import threading
+import time
+
+PORT_RANGE = (8000, 8010)
+APP_DATA_DIR_NAME = "SonicForgeDAW"
+
+
+def _pick_port():
+    for port in range(PORT_RANGE[0], PORT_RANGE[1] + 1):
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+            s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+            try:
+                s.bind(("127.0.0.1", port))
+                return port
+            except OSError:
+                continue
+    return PORT_RANGE[0]
+
+
+def _parent_alive(pid):
+    try:
+        os.kill(pid, 0)
+        return True
+    except OSError:
+        return False
+
+
+def main():
+    os.environ.setdefault("SF_DESKTOP", "1")
+    port = _pick_port()
+    os.environ["SF_PORT"] = str(port)
+
+    # Log ra file — khi dong goi console=False, stdout khong nhin thay duoc.
+    try:
+        log_dir = os.path.join(
+            os.environ.get("APPDATA") or os.path.expanduser("~"),
+            APP_DATA_DIR_NAME, "logs",
+        )
+        os.makedirs(log_dir, exist_ok=True)
+        logging.basicConfig(
+            level=logging.INFO,
+            format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+            handlers=[
+                logging.FileHandler(os.path.join(log_dir, "engine.log"), encoding="utf-8"),
+                logging.StreamHandler(),
+            ],
+        )
+    except Exception:
+        logging.basicConfig(level=logging.INFO)
+
+    import uvicorn
+    import app.main  # noqa: F401 — import tuong minh de PyInstaller bundle du package app
+
+    config = uvicorn.Config(app.main.app, host="127.0.0.1", port=port,
+                            log_level="info", access_log=False)
+    server = uvicorn.Server(config)
+
+    parent_pid = os.environ.get("SF_PARENT_PID")
+    if parent_pid:
+        def _watchdog():
+            pid = int(parent_pid)
+            while True:
+                time.sleep(1.0)
+                if not _parent_alive(pid):
+                    logging.getLogger("desktop_engine").info(
+                        "Parent process exited — shutting down engine")
+                    server.should_exit = True
+                    return
+        threading.Thread(target=_watchdog, daemon=True).start()
+
+    logging.getLogger("desktop_engine").info(
+        "SonicForge engine listening on 127.0.0.1:%d", port)
+    server.run()
+
+
+if __name__ == "__main__":
+    main()

docker-compose.prod.yml

@@ -6,14 +6,15 @@ services:
     restart: unless-stopped
 
   web:
-    build: .
     image: ${IMAGE:-sonicforge-studio:latest}
     restart: unless-stopped
     ports:
       - "${WEB_PORT:-8000}:8000"
     env_file: .env
     volumes:
-      - sf_data:/app/app/storage
+      - sf_uploads:/app/app/storage/uploads
+      - sf_processed:/app/app/storage/processed
+      - sf_db:/app/app/storage
       - ${VST3_DIR:-./vst_plugins}:/opt/daw_engine/vst3:ro
       - ${SOUNDFONTS_DIR:-./soundfonts}:/opt/daw_engine/soundfonts:ro
       - ${PIANOBOOK_DIR:-./samples/pianobook}:/opt/daw_engine/samples/pianobook:ro
@@ -27,13 +28,14 @@ services:
       - redis
 
   worker:
-    build: .
     image: ${IMAGE:-sonicforge-studio:latest}
     restart: unless-stopped
     command: celery -A app.tasks.worker.celery_app worker --loglevel=info
     env_file: .env
     volumes:
-      - sf_data:/app/app/storage
+      - sf_uploads:/app/app/storage/uploads
+      - sf_processed:/app/app/storage/processed
+      - sf_db:/app/app/storage
       - ${VST3_DIR:-./vst_plugins}:/opt/daw_engine/vst3:ro
       - ${SOUNDFONTS_DIR:-./soundfonts}:/opt/daw_engine/soundfonts:ro
       - ${PIANOBOOK_DIR:-./samples/pianobook}:/opt/daw_engine/samples/pianobook:ro
@@ -41,15 +43,16 @@ services:
       - redis
 
   beat:
-    build: .
     image: ${IMAGE:-sonicforge-studio:latest}
     restart: unless-stopped
     command: celery -A app.tasks.worker.celery_app beat --loglevel=info
     env_file: .env
     volumes:
-      - sf_data:/app/app/storage
+      - sf_db:/app/app/storage
     depends_on:
       - redis
 
 volumes:
-  sf_data:
+  sf_uploads:
+  sf_processed:
+  sf_db:

engine.spec

@@ -1,30 +1,89 @@
-# engine.spec — PyInstaller config (spec desktop 2026-08-08 — daw_engine.exe)
+# engine.spec — PyInstaller config cho daw_engine.exe (sidecar Python)
+# Chay: pyinstaller engine.spec --clean --noconfirm (tren Windows)
 # -*- mode: python ; coding: utf-8 -*-
 
-import sys
 import os
-from PyInstaller.utils.hooks import collect_dynamic_libs, collect_data_files
+from PyInstaller.utils.hooks import collect_dynamic_libs, collect_submodules, collect_data_files
 
-block_cipher = None
+# Native DLL cho pedalboard va soundfile
-
-# Collect native DLL files for pedalboard and soundfile
 binaries = collect_dynamic_libs('pedalboard')
 binaries += collect_dynamic_libs('soundfile')
-binaries += collect_dynamic_libs('fluidsynth')
 
-# Collect configuration files and default soundfont catalogs
+# Root tuyet doi cua thu muc chua spec — dung cho cac datas KHONG nam trong
-datas = [
+# package 'app' (vd thu muc md/). Cac assets cua app (static/templates/models)
-    ('app/storage', 'app/storage'),
+# duoc bundle qua collect_data_files('app').
-    ('app/static', 'app/static'),
+_SPEC_ROOT = os.path.abspath(SPECPATH)
-    ('app/templates', 'app/templates'),
+
+# ⚠️ GOC ROOT CUA MOI LOI 'app\static does not exist' (gap 3 lan):
+# lenh `pyinstaller engine.spec` (entry-point script) KHONG them CWD vao
+# sys.path (chi `python -m PyInstaller` moi them). collect_data_files('app')
+# import package qua sys.path -> khong thay 'app' -> tra ve [] AM THAM ->
+# bundle thieu static/templates -> exe crash luc chay. Fix: chen _SPEC_ROOT
+# vao sys.path TRUOC khi collect de import 'app' luon hoạt dong.
+import sys as _sys
+if _SPEC_ROOT not in _sys.path:
+    _sys.path.insert(0, _SPEC_ROOT)
+
+# Assets cua app: bundle QUA IMPORT SYSTEM (collect_data_files) — an toan nhat.
+# Loai tru storage (57MB soundfonts/uploads — vo ich trong onefile, config.py
+# da chuyen storage sang %APPDATA%\\SonicForgeDAW khi frozen) va __pycache__.
+datas = collect_data_files('app', excludes=['**/storage/**', '**/__pycache__/**', '**/*.pyc'])
+# Fallback cuoi cung: neu collect_data_files van tra ve rong (phong moi truong
+# hop ky la), dung datas TINH absolute — tinh huong xau nhat van co du assets.
+if not datas:
+    print("WARN: collect_data_files('app') tra ve rong - dung datas tinh absolute")
+    datas = [
+        (os.path.join(_SPEC_ROOT, 'app', 'templates'), 'app/templates'),   # index.html, favicon.svg
+        (os.path.join(_SPEC_ROOT, 'app', 'static'), 'app/static'),         # js/css/processors
+        (os.path.join(_SPEC_ROOT, 'app', 'models'), 'app/models'),         # project_schema.json (projects.py)
+    ]
+datas += [
+    (os.path.join(_SPEC_ROOT, 'md'), 'md'),   # /ai-prompt-generator (doc, ngoai package app)
 ]
 
+# librosa 0.11 dùng lazy_loader.attach_stub -> lúc RUNTIME cần file .pyi
+# ton tai tren disk ('Cannot load imports from non-existent stub ...librosa\__init__.pyi').
+# PyInstaller mac dinh KHONG bundle .pyi -> phai collect explicit.
+datas += collect_data_files('librosa', includes=['**/*.pyi'])
+
+# scipy >= 1.18 tach scipy.stats thanh nhieu module con (vd
+# _ansari_swilk_statistics) import lazy ben trong ham -> hook scipy cua
+# PyInstaller miss -> ModuleNotFoundError luc runtime. Giai phap TRIET DE:
+# scan FILESYSTEM toan bo site-packages/scipy (khong import, khong walk —
+# pkgutil.walk_packages BO QUA AM THAM subpackage import loi luc build,
+# da gap: may user mat ca cay scipy.sparse.csgraph._shortest_path).
+# Bat moi module .py + C-extension .pyd/.so -> hiddenimports day du.
+import importlib.util as _ilu
+import glob as _glob
+_scipy_spec = _ilu.find_spec('scipy')
+_scipy_dir = os.path.dirname(os.path.abspath(_scipy_spec.origin))
+_scipy_hidden = []
+for _ext in ('*.py', '*.pyd', '*.so'):
+    for _f in _glob.glob(os.path.join(_scipy_dir, '**', _ext), recursive=True):
+        _rel = os.path.relpath(_f, _scipy_dir)
+        _base = os.path.basename(_rel).split('.')[0]  # bo .cpython-312-x86_64... .so
+        _pkg = os.path.dirname(_rel).replace(os.sep, '.')
+        _mod = ('scipy.' + _pkg + '.' + _base) if _pkg else ('scipy.' + _base)
+        if _mod not in _scipy_hidden:
+            _scipy_hidden.append(_mod)
+# Cung co bang hiddenimport TINH: _morestats import module nay o top-level
+# (scipy 1.18+); collect_submodules du phong nhung neu miss (version khac
+# tren may user) thi dong nay van dam bao bundle co.
+if 'scipy.stats._ansari_swilk_statistics' not in _scipy_hidden:
+    _scipy_hidden.append('scipy.stats._ansari_swilk_statistics')
+# scipy.sparse.csgraph cung lazy-import C-extension tu ben trong ham (vd
+# _shortest_path, _traversal, _matching) — hiddenimport tinh phong walk miss.
+for _m in ('scipy.sparse.csgraph._shortest_path', 'scipy.sparse.csgraph._traversal',
+           'scipy.sparse.csgraph._matching', 'scipy.sparse.csgraph._min_spanning_tree'):
+    if _m not in _scipy_hidden:
+        _scipy_hidden.append(_m)
+
 a = Analysis(
-    ['main.py'],
+    ['desktop_engine.py'],
-    pathex=[],
+    pathex=[_SPEC_ROOT],
     binaries=binaries,
     datas=datas,
-    hiddenimports=[
+    hiddenimports=collect_submodules('celery.fixups') + _scipy_hidden + [
         'uvicorn.logging',
         'uvicorn.loops',
         'uvicorn.loops.auto',
@@ -37,34 +96,18 @@ a = Analysis(
         'soundfile',
         'sf2utils',
         'mido.backends.rtmidi',
-        'app.main',
-        'app.config',
-        'app.api.v1.desktop_plugins',
-        'app.core.vst_scanner',
-        'app.core.soundfont_scanner',
-        # Celery dynamic imports (PyInstaller không bắt được — 2026-08-08)
-        'celery.fixups',
-        'celery.fixups.django',
-        'celery.backends',
-        'celery.backends.redis',
-        'celery.schedules',
-        'celery.app.builtins',
-        'kombu.transport.redis',
-        'billiard',
-        'vine',
-        'redis',
     ],
     hookspath=[],
     hooksconfig={},
     runtime_hooks=[],
-    excludes=[],
+    excludes=['tkinter'],
     win_no_prefer_redirects=False,
     win_private_assemblies=False,
-    cipher=block_cipher,
+    cipher=None,
     noarchive=False,
 )
 
-pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+pyz = PYZ(a.pure, a.zipped_data, cipher=None)
 
 exe = EXE(
     pyz,
@@ -80,5 +123,6 @@ exe = EXE(
     upx=True,
     upx_exclude=[],
     runtime_tmpdir=None,
-    console=False,  # Set to True for Debugging, False for Production
+    console=False,  # True khi debug (xem log truc tiep), False cho production
+    icon='src-tauri/icons/icon.ico',
 )

main.py

@@ -1,35 +0,0 @@
-"""Entry point cho daw_engine.exe (PyInstaller — spec desktop 2026-08-08).
-Chạy FastAPI backend trên 127.0.0.1:8000 (Dual-Process Desktop Architecture).
-KHÔNG tự mở browser — Tauri shell (window url=localhost:8000) đảm nhiệm.
-SINGLE-INSTANCE: nếu port 8000 đã có server → EXIT ngay (bug 09:55 — mỗi lần mở
-app spawn thêm daw_engine → nhiều instance + port chiếm → màn đen)."""
-import os
-import socket
-import sys
-
-os.environ.setdefault("SFDATA_DIR", os.path.join(os.path.expanduser("~"), "SonicForgeDAW"))
-
-import uvicorn  # noqa: E402
-
-PORT = 8000
-
-
-def _port_in_use(port: int) -> bool:
-    try:
-        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-        try:
-            s.bind(("127.0.0.1", port))
-            return False
-        except OSError:
-            return True
-        finally:
-            s.close()
-    except Exception:
-        return False
-
-
-if __name__ == "__main__":
-    if _port_in_use(PORT):
-        # Server đang chạy (instance khác — window sẽ dùng nó). KHÔNG spawn thêm.
-        sys.exit(0)
-    uvicorn.run("app.main:app", host="127.0.0.1", port=PORT, log_level="warning")

package-lock.json

@@ -9,6 +9,7 @@
         "@babel/cli": "^8.0.4",
         "@babel/core": "^8.0.1",
         "@babel/preset-react": "^8.0.1",
+        "@babel/standalone": "^7.29.8",
         "jsdom": "^30.0.1",
         "react": "^19.2.8",
         "react-dom": "^19.2.8"
@@ -355,6 +356,15 @@
         "@babel/core": "^8.0.0"
       }
     },
+    "node_modules/@babel/standalone": {
+      "version": "7.29.8",
+      "resolved": "https://registry.npmjs.org/@babel/standalone/-/standalone-7.29.8.tgz",
+      "integrity": "sha512-XgbPNz+u6JzB7cKGnPDoS1U24J5td8yp3HFWbT/6f4/ASZ0PqaQGIvts1o5v5AI+f6i3jdVB/L/o2CYLCv101A==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@babel/template": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-8.0.0.tgz",

package.json

@@ -8,6 +8,7 @@
     "@babel/cli": "^8.0.4",
     "@babel/core": "^8.0.1",
     "@babel/preset-react": "^8.0.1",
+    "@babel/standalone": "^7.29.8",
     "jsdom": "^30.0.1",
     "react": "^19.2.8",
     "react-dom": "^19.2.8"

requirements.txt

@@ -5,14 +5,13 @@ redis>=4.6.0
 python-multipart>=0.0.6
 librosa>=0.10.0
 pydub>=0.25.1
-numpy>=1.24.0,<2.0
+numpy>=1.24.0
 scipy>=1.10.0
 soundfile>=0.12.1
 jinja2>=3.1.2
 httpx>=0.24.0
 jsonschema>=4.18.0
-# pedalboard cài RIÊNG với --no-deps (tránh supertonic — kéo onnx2tf/opencv/pocket-tts
+pedalboard>=0.8.0
-# xung đột numpy<2 vs >=2 — dự án không dùng supertonic — 2026-08-08)
 mido>=1.3.0
 pyfluidsynth>=1.3.0
 sf2utils>=0.9.0

src-tauri/Cargo.toml

@@ -1,8 +1,7 @@
 [package]
 name = "sonicforge-daw"
 version = "1.0.0"
-description = "Sonic Forge DAW - Desktop Studio"
+description = "SonicForge DAW desktop shell (Tauri v2 + Python sidecar)"
-authors = ["SonicForge Studio"]
 edition = "2021"
 
 [lib]
@@ -19,7 +18,6 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 
 [profile.release]
-codegen-units = 1
-lto = true
-opt-level = "s"
 strip = true
+lto = true
+codegen-units = 1

src-tauri/capabilities/default.json

@@ -1,11 +1,7 @@
 {
   "$schema": "../gen/schemas/desktop-schema.json",
   "identifier": "default",
-  "description": "Capabilities for the main window",
+  "description": "Default capability for the main window",
   "windows": ["main"],
-  "permissions": [
+  "permissions": ["core:default"]
-    "core:default",
-    "shell:allow-spawn",
-    "shell:allow-open"
-  ]
 }

src-tauri/hooks.nsh

@@ -0,0 +1,7 @@
+; NSIS installer hooks — cai Microsoft Visual C++ Redistributable neu thieu
+; (MSVCP140.dll missing). Dat vc_redist.x64.exe CANH tauri.conf.json
+; (build_windows.ps1 tu tai ve neu chua co).
+!macro customInstall
+  File "/oname=$PLUGINSDIR\vc_redist.x64.exe" "vc_redist.x64.exe"
+  ExecWait '"$PLUGINSDIR\vc_redist.x64.exe" /install /quiet /norestart'
+!macroend

src-tauri/src/lib.rs

@@ -1,6 +1,7 @@
+// SonicForge DAW — desktop shell: spawn/terminate daw_engine.exe sidecar.
 use tauri::Manager;
-use tauri_plugin_shell::ShellExt;
 use tauri_plugin_shell::process::CommandChild;
+use tauri_plugin_shell::ShellExt;
 use std::sync::Mutex;
 
 struct EngineProcess(Mutex<Option<CommandChild>>);
@@ -10,29 +11,34 @@ pub fn run() {
     tauri::Builder::default()
         .plugin(tauri_plugin_shell::init())
         .setup(|app| {
-            // 1. Spawn sidecar daw_engine.exe (background Python engine — 127.0.0.1:8000)
+            // 1. Spawn sidecar daw_engine.exe (PyInstaller bundle)
-            let sidecar_command = app.shell().sidecar("daw_engine").unwrap();
+            let sidecar_command = app
-            let (mut _rx, child) = sidecar_command.spawn().expect("Failed to spawn daw_engine sidecar");
+                .shell()
+                .sidecar("daw_engine")
+                .expect("sidecar daw_engine not found — run build_windows.ps1 first");
+            let (_rx, child) = sidecar_command
+                .env("SF_PARENT_PID", std::process::id().to_string())
+                .spawn()
+                .expect("Failed to spawn daw_engine sidecar");
 
             app.manage(EngineProcess(Mutex::new(Some(child))));
-            println!("Python Background Engine started successfully on localhost:8000");
+            println!("Python Background Engine started (localhost:8000, auto-fallback 8000-8010)");
             Ok(())
         })
         .on_window_event(|window, event| {
+            // 2. Terminate sidecar khi DAW window dong — tranh orphan process
             if let tauri::WindowEvent::Destroyed = event {
-                // 2. Terminate sidecar khi window đóng — kill CẢ TREE (PyInstaller
+                // Lay child ra khoi lock, guard drop ngay tai day (trach E0597)
-                // onefile = parent + child — child.kill() chỉ giết parent → child
+                let child = window
-                // orphan chạy mãi — bug 09:30). taskkill /T giết cả nhánh.
+                    .state::<EngineProcess>()
-                let state = window.state::<EngineProcess>();
+                    .0
-                if let Ok(mut lock) = state.0.lock() {
+                    .lock()
-                    if let Some(child) = lock.take() {
+                    .ok()
-                        let _ = child.kill();
+                    .and_then(|mut lock| lock.take());
-                    }
+                if let Some(child) = child {
-                };
+                    let _ = child.kill();
-                let _ = std::process::Command::new("taskkill")
+                    println!("daw_engine sidecar terminated.");
-                    .args(["/F", "/T", "/IM", "daw_engine.exe"])
+                }
-                    .output();
-                println!("daw_engine sidecar terminated (tree killed).");
             }
         })
         .run(tauri::generate_context!())

src-tauri/src/main.rs

@@ -1,4 +1,3 @@
-// Prevents additional console window on Windows in release, DO NOT REMOVE!!
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
 fn main() {

src-tauri/tauri.conf.json

@@ -4,18 +4,18 @@
   "version": "1.0.0",
   "identifier": "com.sonicforge.daw",
   "build": {
-    "frontendDist": "../app/templates",
+    "frontendDist": "ui",
     "devUrl": "http://localhost:8000"
   },
   "app": {
     "windows": [
       {
         "title": "Sonic Forge DAW - Professional Desktop Studio",
-        "url": "http://localhost:8000",
         "width": 1440,
         "height": 900,
         "resizable": true,
-        "fullscreen": false
+        "fullscreen": false,
+        "devtools": true
       }
     ],
     "security": {
@@ -24,14 +24,20 @@
   },
   "bundle": {
     "active": true,
-    "targets": ["nsis", "msi"],
+    "targets": ["msi", "nsis"],
     "icon": [
       "icons/32x32.png",
       "icons/128x128.png",
+      "icons/128x128@2x.png",
       "icons/icon.ico"
     ],
     "externalBin": [
       "binaries/daw_engine"
-    ]
+    ],
+    "windows": {
+      "nsis": {
+        "installerHooks": "hooks.nsh"
+      }
+    }
   }
 }

src-tauri/ui/index.html

@@ -0,0 +1,35 @@
+<!doctype html>
+<html lang="vi">
+<head>
+  <meta charset="utf-8">
+  <title>SonicForge DAW</title>
+  <style>
+    body { font-family: system-ui, sans-serif; background: #12141a; color: #e8eaf0;
+           display: flex; align-items: center; justify-content: center; height: 100vh; margin: 0; }
+    #msg { text-align: center; max-width: 480px; line-height: 1.6; }
+  </style>
+</head>
+<body>
+  <div id="msg">Đang khởi động SonicForge Engine…</div>
+  <script>
+    // Engine (sidecar) có thể cần vài giây để boot (import librosa/pedalboard).
+    // Thử health-check trên dải port 8000-8010, redirect tới port đầu tiên OK.
+    (async function () {
+      var tries = 0;
+      while (tries < 90) { // ~60s tối đa
+        for (var p = 8000; p <= 8010; p++) {
+          try {
+            var r = await fetch('http://127.0.0.1:' + p + '/health', { cache: 'no-store' });
+            if (r.ok) { location.href = 'http://127.0.0.1:' + p + '/'; return; }
+          } catch (e) { /* port chưa mở */ }
+        }
+        tries++;
+        await new Promise(function (res) { setTimeout(res, 700); });
+      }
+      document.getElementById('msg').textContent =
+        'Không tìm thấy SonicForge Engine (port 8000–8010). Hãy đóng và chạy lại ứng dụng. ' +
+        'Nếu lặp lại, xem log: %APPDATA%\\SonicForgeDAW\\logs\\engine.log';
+    })();
+  </script>
+</body>
+</html>

tools/gen_icons.py

@@ -0,0 +1,59 @@
+"""Sinh bo icon cho Tauri v2 + PyInstaller (chay 1 lan, co the tai chay).
+
+Usage: python tools/gen_icons.py
+Output: src-tauri/icons/{32x32,128x128,128x128@2x}.png, icon.png, icon.ico
+"""
+import os
+from PIL import Image, ImageDraw, ImageFont
+
+ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+ICONS = os.path.join(ROOT, "src-tauri", "icons")
+BG = (18, 20, 26, 255)          # #12141a — trùng màu nền loader
+FG = (77, 182, 255, 255)        # xanh dương sáng
+RING = (46, 52, 66, 255)
+
+
+def _font(size):
+    for p in ("/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf",
+              "C:/Windows/Fonts/segoeuib.ttf"):
+        if os.path.exists(p):
+            return ImageFont.truetype(p, size)
+    return ImageFont.load_default()
+
+
+def _draw(size):
+    img = Image.new("RGBA", (size, size), (0, 0, 0, 0))
+    d = ImageDraw.Draw(img)
+    # nền bo góc + viền
+    r = size // 8
+    d.rounded_rectangle([0, 0, size - 1, size - 1], radius=r, fill=BG)
+    d.rounded_rectangle([size // 32, size // 32, size - 1 - size // 32, size - 1 - size // 32],
+                        radius=max(1, r - size // 32), outline=RING, width=max(2, size // 64))
+    # chữ "SF"
+    font = _font(int(size * 0.42))
+    text = "SF"
+    bbox = d.textbbox((0, 0), text, font=font)
+    w, h = bbox[2] - bbox[0], bbox[3] - bbox[1]
+    d.text(((size - w) / 2 - bbox[0], (size - h) / 2 - bbox[1]), text,
+           font=font, fill=FG)
+    return img
+
+
+def main():
+    os.makedirs(ICONS, exist_ok=True)
+    sizes = {"32x32.png": 32, "128x128.png": 128, "128x128@2x.png": 256, "icon.png": 512}
+    imgs = []
+    for name, size in sizes.items():
+        img = _draw(size)
+        img.save(os.path.join(ICONS, name))
+        imgs.append((img, size))
+        print("generated", name)
+    # icon.ico: multi-size
+    base = _draw(256)
+    base.save(os.path.join(ICONS, "icon.ico"),
+              sizes=[(16, 16), (32, 32), (48, 48), (64, 64), (128, 128), (256, 256)])
+    print("generated icon.ico")
+
+
+if __name__ == "__main__":
+    main()

tools/mkicons.py

@@ -1,32 +0,0 @@
-import struct, zlib, os
-
-def make_png(path, size):
-    w = h = size
-    raw = b''
-    for y in range(h):
-        row = b'\x00'
-        for x in range(w):
-            cx, cy = x - w / 2, y - h / 2
-            d = (cx * cx + cy * cy) ** 0.5 / (w / 2)
-            r = int(120 + 60 * (1 - d))
-            g = int(60 + 40 * (1 - d))
-            b = int(200 + 40 * (1 - d))
-            row += bytes((r, g, b, 255))
-        raw += row
-    def chunk(tag, data):
-        c = tag + data
-        return struct.pack('>I', len(data)) + c + struct.pack('>I', zlib.crc32(c) % 0x100000000)
-    png = b'\x89PNG\r\n\x1a\n'
-    png += chunk(b'IHDR', struct.pack('>IIBBBBB', w, h, 8, 6, 0, 0, 0))
-    png += chunk(b'IDAT', zlib.compress(raw, 9))
-    png += chunk(b'IEND', b'')
-    open(path, 'wb').write(png)
-
-os.makedirs('src-tauri/icons', exist_ok=True)
-make_png('src-tauri/icons/32x32.png', 32)
-make_png('src-tauri/icons/128x128.png', 128)
-png128 = open('src-tauri/icons/128x128.png', 'rb').read()
-ico = struct.pack('<HHH', 0, 1, 1) + struct.pack('<BBBBHHII', 128, 128, 0, 0, 1, 32, len(png128), 22) + png128
-open('src-tauri/icons/icon.ico', 'wb').write(ico)
-open('src-tauri/icons/icon.png', 'wb').write(png128)
-print('icons:', os.listdir('src-tauri/icons'))

tools/verify_bundle.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+"""Verify PyInstaller bundle TOC chua du app assets (app/static, app/templates).
+
+Dung boi build_windows.ps1 (buoc 3.5/6) de bat loi bundle NGAY tai build:
+  python tools/verify_bundle.py
+Exit code 0 = OK, 1 = thieu asset.
+
+Ly do ton tai: da gap 2 lan exe crash 'Directory ...\\app\\static does not exist'
+vi chay pyinstaller tu noi khac -> datas relative khong resolve -> bo qua am tham.
+"""
+import glob
+import os
+import re
+import sys
+
+REQUIRED = ["app/static", "app/templates"]
+
+
+def find_toc(build_dir: str) -> str:
+    # PyInstaller 6.x: build/engine/Analysis-00.toc (hoac *-00.toc khac)
+    for pattern in (
+        os.path.join(build_dir, "engine", "Analysis-00.toc"),
+        os.path.join(build_dir, "engine", "*-00.toc"),
+        os.path.join(build_dir, "**", "Analysis-00.toc"),
+        os.path.join(build_dir, "**", "*-00.toc"),
+    ):
+        hits = glob.glob(pattern, recursive=True)
+        if hits:
+            return hits[0]
+    return ""
+
+
+def main() -> int:
+    build_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "build"))
+    toc = find_toc(build_dir)
+    if not toc:
+        print(f"WARN: khong tim thay TOC trong {build_dir} - bo qua verify (tiep tuc build)")
+        return 0
+    print(f"Verify TOC: {toc}")
+    with open(toc, "r", encoding="utf-8", errors="replace") as f:
+        raw = f.read()
+    # TOC Windows co the dung backslash (app\\static) — normalize het ve forward
+    # slash de kiem tra khong bi false positive. TOC la Python literal nen
+    # backslash bi DOUBLE-escape ('app\\\\static') — thay 2 lan (\\\\ truoc,
+    # roi \\) de ca 2 dang deu ve '/'.
+    text = raw.replace("\\\\", "/").replace("\\", "/")
+    missing = []
+    for req in REQUIRED:
+        # Tim theo prefix thuc su trong TOC (vd 'app/static/js/...' hoac
+        # string repr 'app/static/...' trong tuple DATA entry).
+        if not re.search(re.escape(req) + r"(?=[/'\"]|$)", text):
+            missing.append(req)
+    if missing:
+        print(f"ERROR: Bundle thieu: {', '.join(missing)}. Kiem tra engine.spec datas!")
+        return 1
+    print("OK: app/static + app/templates co trong bundle.")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

wiki.md

@@ -1,3 +1,109 @@
+### [2026-08-08] FIX: verify_bundle.py vẫn false-positive trên Windows — TOC là Python literal nên backslash bị DOUBLE-escape ('app\\\\static')
+- **Tóm tắt thay đổi:** Fix LAN 2 normalize `replace('\\','/')` 1 lần KHÔNG đủ: TOC file là Python literal (repr) → path Windows ghi thành `app\\\\static` (2 backslash trên disk) → replace 1 lần ra `app//static` → regex `app/static(?=[/'"])` không match → vẫn báo "Bundle thieu" DÙ bundle đủ. Fix: normalize 2 bước — `replace("\\\\","/")` (bắt double-escape) rồi `replace("\\","/")` (backslash đơn). Verify bằng TOC giả lập Windows repr: cả 2 entry match True.
+- **Các file ảnh hưởng:** `tools/verify_bundle.py` (dòng normalize)
+- **Ghi chú/Test (nếu có):** Test TOC Windows repr `'app\\\\static\\\\js\\\\app.js'` → normalize ra `app/static/js/app.js` → regex match. User: pull code mới rồi chạy lại build_windows.ps1 (bước 3.5 sẽ hết báo thiếu nếu bundle thực sự đủ).
+
+---
+### [2026-08-08] FIX (LAN 3 - GOC ROOT): 'app\\static does not exist' — sys.path thieu CWD khi chay 'pyinstaller' (entry point)
+- **Tóm tắt thay đổi:** Lỗi 'app\static does not exist' vẫn tái diễn dù đã 2 lần sửa datas (absolute path roi collect_data_files). Lần này tìm ra GOC ROOT THẬT SỰ: lệnh `pyinstaller engine.spec` (entry-point script cua PyInstaller) KHONG them CWD vao sys.path — chi `python -m PyInstaller` moi them. `collect_data_files('app')` import package 'app' qua sys.path -> khong thay -> tra ve [] AM THAM -> bundle thieu static/templates (dung canh: tren may dev chay `python -m PyInstaller` nen CWD co trong sys.path -> tuong da dung; may Windows chay `pyinstaller` -> CWD khong co -> collect rong -> TOC khong co app/static — dung voi loi verify cua user). Fix trong `engine.spec`:
+  1. `sys.path.insert(0, _SPEC_ROOT)` TRUOC khi goi collect_data_files — import 'app' luon hoạt dong bat ke CWD.
+  2. Fallback cuoi: neu collect_data_files van tra ve rong -> datas TINH absolute (app/templates, app/static, app/models) + in WARN de debug.
+- **Cac file anh huong:** `engine.spec` (sys.path insert + fallback datas tinh)
+- **Ghi chu/Test (neu co):** VERIFY DUNG DIEU KIEN THAT BAI: build tu /tmp (CWD khac project root — giong `pyinstaller` entry point khong co CWD trong sys.path) -> TOC co app/static (124) + app/templates (12), khong co WARN "tra ve rong"; tools/verify_bundle.py -> OK exit 0; chay binary frozen -> /health OK, index 200, static js 200. pytest 86 passed. User: pull engine.spec moi roi chay lai build_windows.ps1.
+
+---
+### [2026-08-08] FIX (lan 2): ERR_MODULE_NOT_FOUND '@babel/standalone' vẫn xảy ra — build_windows.ps1 TỰ cài dep nếu thiếu
+- **Tóm tắt thay đổi:** User vẫn gặp ERR_MODULE_NOT_FOUND '@babel/standalone' dù đã thêm vào package.json — máy Windows chưa pull package.json mới hoặc npm install chưa cài. Fix: `build_windows.ps1` bước [2/6] — sau `npm install`, TỰ KIỂM TRA `node_modules\@babel\standalone`; thiếu → `npm install @babel/standalone --no-audit --no-fund`; vẫn thiếu → ERROR + exit 1. Không còn phụ thuộc package.json mới trên máy user.
+- **Các file ảnh hưởng:** `build_windows.ps1` (bước 2 tự cài @babel/standalone)
+- **Ghi chú/Test (nếu có):** File ASCII-only + UTF-8 BOM (không lặp lỗi PS5.1), brace depth 0. User: pull build_windows.ps1 mới (hoặc toàn bộ) rồi chạy lại.
+
+---
+### [2026-08-08] FIX: build.mjs ERR_MODULE_NOT_FOUND '@babel/standalone' trên Windows — package.json thiếu dependency
+- **Tóm tắt thay đổi:** User chạy build_windows.ps1 (bước 2/6 node build.mjs) nhận `Error [ERR_MODULE_NOT_FOUND]: Cannot find package '@babel/standalone' imported from build.mjs`. Root cause: `build.mjs` import `@babel/standalone` nhưng **package.json KHÔNG khai báo** dependency này (máy dev có sẵn trong node_modules từ trước nên không lộ; máy Windows `npm install` chỉ cài theo package.json → thiếu). Fix: thêm `"@babel/standalone": "^7.29.8"` vào dependencies + chạy `npm install` cập nhật `package-lock.json`.
+- **Các file ảnh hưởng:** `package.json` (+@babel/standalone), `package-lock.json` (npm install)
+- **Ghi chú/Test (nếu có):** npm install OK (up to date), package-lock có node_modules/@babel/standalone, `node build.mjs` BUILD OK 1123403 bytes + node --check OK. User: pull code mới rồi chạy lại build_windows.ps1.
+
+---
+### [2026-08-08] FIX: verify bundle [3.5/6] false-positive 'app/static thieu' + check spec version — tools/verify_bundle.py
+- **Tóm tắt thay đổi:** User chạy build_windows.ps1 — bước verify [3.5/6] mới báo "ERROR: Bundle thieu: app/static, app/templates" nhưng thực tế bundle ĐỦ (collect_data_files('app') đã hoạt động — verify bằng build Linux). Root cause: script verify cũ dùng regex `-notmatch "app/static"` trên raw TOC — trên Windows TOC chứa `app\static` (BACKSLASH) → regex forward-slash không match → FALSE POSITIVE báo thiếu. Fix:
+  1. **tools/verify_bundle.py** (mới): verify TOC bằng Python — đọc text, `replace('\\','/')` normalize backslash→forward, regex theo prefix `app/static(?=[/'"]|$)`; exit 0 OK / 1 thiếu; không có TOC → WARN + exit 0 (không chặn build). Test 4 case: backslash OK, forward OK, thiếu static → ERROR, không TOC → WARN.
+  2. **build_windows.ps1 [3.5/6]**: trước tiên check `engine.spec` có chứa `collect_data_files('app')` — nếu spec CŨ (chưa pull code mới) → báo rõ "engine.spec CU... Pull code moi" + exit 1 (tránh nhầm lẫn nguyên nhân). Sau đó chạy `python tools\verify_bundle.py` + check `$LASTEXITCODE`.
+- **Các file ảnh hưởng:** `tools/verify_bundle.py` (mới), `build_windows.ps1` (bước 3.5 gọi script + check spec)
+- **Ghi chú/Test (nếu có):** verify_bundle.py test 4 case đều đúng; chạy với TOC THẬT (build Linux PyInstaller 6.21) → "Thiếu: KHÔNG — OK". Binary frozen: /health OK, index 200, static js 200. pytest 86 passed. User: pull code mới (có tools/verify_bundle.py) rồi chạy lại build_windows.ps1.
+
+---
+### [2026-08-08] FIX: build_windows.ps1 lỗi parse PowerShell — "String is missing terminator" (file chứa ký tự Unicode, PS 5.1 đọc theo ANSI)
+- **Tóm tắt thay đổi:** User chạy build_windows.ps1 trên Windows nhận ParserError "String is missing terminator" ở dòng 57 + "Missing closing '}'" ở dòng 34. Root cause: bản mình thêm bước verify [3.5/6] có chứa ký tự Unicode (em-dash `—` trong comment + chuỗi tiếng Việt có dấu "thiếu/Dừng/kiểm tra"). PowerShell 5.1 đọc file .ps1 KHÔNG có BOM theo ANSI/Windows-1252 → byte UTF-8 của `—` (E2 80 94) giải mã thành `â€"` — dấu ngoặc kép giả chui vào giữa chuỗi → chuỗi "mất terminator" + block `{}` lệch. Fix:
+  1. Viết lại toàn bộ build_windows.ps1 **chỉ ASCII** (bỏ dấu tiếng Việt, bỏ em-dash, dùng `->`).
+  2. Thêm **UTF-8 BOM** (EF BB BF) vào đầu file — PowerShell đọc đúng encoding bất kể.
+  3. Giữ nguyên bước verify [3.5/6] (TOC check app/static + app/templates).
+- **Các file ảnh hưởng:** `build_windows.ps1` (ASCII-only + BOM)
+- **Ghi chú/Test (nếu có):** File giờ 0 ký tự non-ASCII, có BOM; brace depth = 0 (cân bằng), không có dòng Write-Host quote lẻ. Lưu ý chung: MỌI .ps1/.bat trong dự án phải ASCII-only + BOM (PS 5.1 ANSI bug) — tránh tiếng Việt có dấu/em-dash trong file script Windows.
+
+---
+### [2026-08-08] FIX (LẦN 2): Windows exe vẫn crash 'app\static does not exist' + stuck 'Đang khởi động Engine' — bundle qua collect_data_files + fallback + verify build
+- **Tóm tắt thay đổi:** User build bản Windows vẫn gặp RuntimeError `Directory '..._MEIxxxx\app\static' does not exist` (lần 2 — fix trước dùng datas ABSOLUTE theo SPECPATH nhưng trên máy user vẫn thiếu static trong bundle) + UI stuck "Đang khởi động SonicForge Engine". 3 lớp phòng thủ:
+  1. **engine.spec — bundle qua IMPORT SYSTEM**: bỏ datas đường dẫn tĩnh, thay bằng `collect_data_files('app', excludes=['**/storage/**','**/__pycache__/**','**/*.pyc'])` — PyInstaller tự tìm assets (static/templates/models) qua package import, KHÔNG phụ thuộc CWD/SPECPATH lúc chạy lệnh (nguyên nhân gốc: chạy pyinstaller từ thư mục khác → relative path không resolve → bỏ qua âm thầm). Loại luôn `app/storage` (57MB soundfonts — vô ích trong onefile, config.py đã redirect %APPDATA%). Giữ `md/` (ngoài package) + librosa .pyi.
+  2. **app/main.py — fallback an toàn**: nếu STATIC_DIR không tồn tại → thử `sys._MEIPASS/app/static` và `dirname(__file__)/static`; vẫn thiếu → **tự os.makedirs** → StaticFiles không còn crash lúc import (engine không chết, app hiện lỗi rõ thay vì 6 hộp thoại + stuck loader).
+  3. **build_windows.ps1 — verify post-build [3.5/6]**: sau pyinstaller, đọc Analysis-00.toc kiểm tra `app/static` + `app/templates` có trong bundle — thiếu → in ERROR đỏ + `exit 1` (bắt lỗi NGAY lúc build, không đợi chạy app mới vỡ).
+- **Các file ảnh hưởng:** `engine.spec` (collect_data_files('app') + bỏ storage), `app/main.py` (fallback static dir), `build_windows.ps1` (verify TOC post-build)
+- **Ghi chú/Test (nếu có):** VERIFY THẬT trên Linux (PyInstaller 6.21, cùng spec): Analysis-00.toc chứa app/static (124), app/templates (12), app/models (5); exe 155MB (giảm 57MB); chạy binary frozen → /health OK, index 200, static js 200, favicon 200, không crash. pytest 86 passed. User cần chạy lại `build_windows.ps1` (bước 3.5 sẽ tự kiểm tra bundle).
+
+---
+### [2026-08-08] IMPROVE: About modal — logo dùng favicon của app (app/templates/favicon.svg, serve /favicon.svg)
+- **Tóm tắt thay đổi:** User yêu cầu logo trong About modal phải là logo của web/app — favicon lưu trong hệ thống. Trước đây AboutModal dùng div gradient chữ "SF". Fix: thay bằng `<img src="/favicon.svg">` (route đã có sẵn trong app/main.py — serve từ TEMPLATES_DIR; file app/templates/favicon.svg, SVG 1254x1254). Hiển thị 48x48 object-contain, nền tối + border cho nổi trên modal.
+- **Các file ảnh hưởng:** `app/static/js/app.jsx` (AboutModal img), `app/static/js/app.precompiled.js` (rebuild), `app/templates/index.html` (bump v=202608081600)
+- **Ghi chú/Test (nếu có):** BUILD OK 1123403 bytes, node --check OK, pytest 86 passed. Verify: /favicon.svg 200 image/svg+xml, bundle chứa "favicon.svg".
+
+---
+### [2026-08-08] FEAT: Menu Help (About + Hướng dẫn sử dụng) + Tools → Preferences (Theme/Language/Button font size)
+- **Tóm tắt thay đổi:** User yêu cầu 2 nhóm tính năng:
+  1. **Menu Help**: 
+     - `About SonicForge Studio...` → **AboutModal** mới: dev **Lộc Phạm**, email **tranloclqd@gmail.com**, version `1.0.0` (khớp tauri.conf.json), build Standalone (Tauri v2 + PyInstaller).
+     - `Hướng dẫn sử dụng...` → **HelpModal** mới: 8 mục hướng dẫn song ngữ (vi/en theo language preference): Bắt đầu nhanh, MIDI & ARM, Piano Roll, FX & Master, SoundFont & VST, AI, Lưu & Xuất, Phím tắt.
+  2. **Tools → Preferences...** → **PreferencesModal** mới quản lý:
+     - **Theme** (5 preset): dark (mặc định), midnight, forest, violet, graphite — áp qua `data-theme` trên `<html>` + CSS variables `--sf-bg/--sf-panel/--sf-header/--sf-border/--sf-accent` (thêm trong index.html `<style>`, override .daw-app-shell/.daw-panel/.daw-header/body/scrollbar).
+     - **Language**: vi/en — áp ngay cho HelpModal + PreferencesModal (menu chính giữ nguyên — app vốn song ngữ lẫn lộn).
+     - **Button font size**: sm/md/lg — áp qua `data-btnfont` trên `<html>` + CSS `html[data-btnfont=...] button { font-size: ... !important }`.
+  3. **Lưu trữ**: localStorage `sf_prefs` + server `/api/v1/user/preferences` (window.SonicAPI.getPreferences/savePreferences — endpoint đã có sẵn). Load server prefs khi khởi động.
+- **Các file ảnh hưởng:** `app/static/js/app.jsx` (AboutModal/HelpModal/PreferencesModal mới + state prefs + menu Tools/Help + render 3 modal), `app/static/js/app.precompiled.js` (rebuild), `app/templates/index.html` (CSS theme + data-btnfont + bump v=202608081500)
+- **Ghi chú/Test (nếu có):** BUILD OK 1123418 bytes, node --check OK, pytest 86 passed. Verify serve: index 200, precompiled 200, bundle chứa đủ "Hướng dẫn sử dụng", "tranloclqd@gmail.com", "data-btnfont", "Preferences". Lưu ý: button font size dùng !important nên override cả text-xs của Tailwind — đúng ý "đổi cỡ chữ button" nhưng có thể làm một số nút hơi to/nhỏ so với thiết kế gốc.
+
+---
+### [2026-08-08] FIX: VU meter giữ animation đúng TRƯỜNG ĐỘ âm thanh khi ARM + nhấn/giữ phím MIDI keyboard
+- **Tóm tắt thay đổi:** User yêu cầu: bật ARM + nhấn phím MIDI keyboard preview — khi âm CÒN PLAY thì VU meter phải còn animate cho đúng trường độ âm thanh. Trước đây: note-on → `triggerMidiVuActivity` set peak → VU tick decay 0.75/frame → VU tắt sau ~0.5s DÙ âm còn kêu (note dài 60000ms, chỉ tắt khi note-off). Root cause: VU tick decay theo thời gian, không biết note đang giữ. Fix:
+  1. **`heldMidiNotesRef`** (mới): đếm số note MIDI đang GIỮ per-track (ARM + keyboard live). Note-on → tăng counter (cả nhánh armed sub-tab PIANO_ROLL lẫn armed main track); note-off → giảm, về 0 thì xóa.
+  2. **VU tick**: `heldCnt = heldMidiNotesRef.current[vuKey]` — còn note giữ (heldCnt > 0) → GIỮ NGUYÊN peak, KHÔNG decay → VU animate suốt trường độ; hết note (note-off) → decay 0.75 (~0.5s) tắt nhanh như cũ (giữ hành vi user bug 07:15 "hết âm → VU tắt ngay").
+  3. **stopAllPlayback**: clear luôn `heldMidiNotesRef.current = {}` cùng với `midiVuActivityRef` — tránh sau STOP (âm đã dừng) tick vẫn thấy counter > 0 → giữ peak → VU dính mãi.
+- **Các file ảnh hưởng:** `app/static/js/app.jsx` (heldMidiNotesRef + note-on/note-off counters + VU tick giữ peak), `app/static/js/app.precompiled.js` (rebuild), `app/templates/index.html` (bump v=202608081400)
+- **Ghi chú/Test (nếu có):** BUILD OK 1109174 bytes, node --check OK, pytest 86 passed + 5 skipped. Luồng: nhấn giữ phím → VU giữ peak; nhả phím (note-off) → VU decay ~0.5s rồi tắt; STOP → VU tắt ngay. Keybed click (mousedown duration 500ms) giữ nguyên hành vi cũ (không qua heldMidiNotesRef).
+
+---
+### [2026-08-08] FIX: Chặn browser zoom toàn trang — item/button/label giữ nguyên kích thước khi phóng to UI
+- **Tóm tắt thay đổi:** User yêu cầu: khi phóng to giao diện, các item/button/label PHẢI GIỮ NGUYÊN kích thước hiện tại — chỉ các vùng flexible co giãn + cho phép user tự kéo resize (resizer TCP/sidebar/media-explorer/track-height ĐÃ có sẵn). Root cause: layout vốn dùng px cố định (không scale theo window), nhưng **browser zoom toàn trang** (Ctrl+wheel, Ctrl+plus/minus/0, pinch gesture) scale TOÀN BỘ UI → control phóng to theo. WebView2 (Tauri) mặc định bật zoom control. Fix trong `app/templates/index.html`:
+  1. Meta viewport thêm `maximum-scale=1.0, user-scalable=no`.
+  2. Inline script chặn zoom ở **capture phase** bằng `preventDefault()` — KHÔNG `stopPropagation()` nên các vùng zoom CHUYÊN DỤNG vẫn nhận event và hoạt động bình thường: timeline zoom (Ctrl+wheel, 18999), piano-roll grid zoom (7351), waveform canvas zoom (12189), EQ canvas wheel (10144).
+  3. Chặn keydown Ctrl+'+'/'-'/'='/'_'/'0' + gesturestart/gesturechange (pinch Safari/WebKit).
+- **Các file ảnh hưởng:** `app/templates/index.html` (meta viewport + zoom-guard script inline)
+- **Ghi chú/Test (nếu có):** index.html serve OK (uvicorn), script extract + node --check OK. Không đụng app.jsx/app.precompiled.js (index.html no-cache nên không cần bump stamp). Resizer panel giữ nguyên — user vẫn kéo được TCP width (280-600), sidebar (200-600), media-explorer (20-80%), track height (110-300).
+
+---
+### [2026-08-08] FIX: Windows runtime — ModuleNotFoundError scipy.stats._ansari_swilk_statistics + ValueError librosa stub (PyInstaller bundle)
+- **Tóm tắt thay đổi:** User chạy bản Windows exe gặp 2 lỗi runtime (hộp thoại error):
+  1. `ModuleNotFoundError: No module named 'scipy.stats._ansari_swilk_statistics'` — scipy >= 1.18 tách `scipy.stats` thành nhiều module con import LAZY bên trong hàm (vd `_ansari_swilk_statistics`) → hook scipy của PyInstaller không thấy → thiếu trong bundle. Fix: `engine.spec` thêm `collect_submodules('scipy')` vào hiddenimports (collect toàn bộ stats/signal/ndimage/... — không sót module nào).
+  2. `ValueError: Cannot load imports from non-existent stub '..._MEIxxxx\librosa\__init__.pyi'` — librosa 0.11 dùng `lazy_loader.attach_stub` → lúc RUNTIME cần file `.pyi` tồn tại trên disk, nhưng PyInstaller mặc định KHÔNG bundle `.pyi` (4 file: `__init__.pyi`, `core/`, `feature/`, `util/`). Fix: `datas += collect_data_files('librosa', includes=['**/*.pyi'])`.
+- **Các file ảnh hưởng:** `engine.spec` (import collect_data_files + _scipy_hidden + librosa .pyi datas)
+- **Ghi chú/Test (nếu có):** VERIFY THẬT bằng build PyInstaller trên Linux (cùng engine.spec, cần objdump/objcopy từ NDK llvm) → chạy binary frozen → `/health` OK, `/` 200, `/static/js/app.precompiled.js` 200, không còn 2 lỗi trên. pytest 86 passed. Lưu ý: máy user cần build lại bằng `build_windows.ps1` để có exe mới.
+
+---
+### [2026-08-08] FIX: Windows build crash — 'app\static does not exist' (PyInstaller datas relative) + FIX: ARM track + MIDI keyboard → VU meter đứng yên
+- **Tóm tắt thay đổi:** 2 bug trên bản Windows standalone:
+  1. **Build crash 6 hộp thoại error**: `RuntimeError: Directory '...\_MEIxxxx\app\static' does not exist` khi chạy daw_engine.exe. Root cause: `app/main.py` dùng `os.path.dirname(__file__)` để mount /static — khi frozen `__file__` trỏ vào thư mục giải nén tạm `_MEI...` KHÔNG phải `sys._MEIPASS`; đồng thời `engine.spec` datas dùng path RELATIVE (resolve theo CWD lúc chạy `pyinstaller`, chạy từ nơi khác → bỏ qua âm thầm → static/templates/models thiếu trong bundle). Fix: `main.py` dùng `settings.APP_DIR` (freeze-aware, config.py đã có); `engine.spec` đổi toàn bộ datas + pathex sang ABSOLUTE từ `SPECPATH` + thêm `app/models` (project_schema.json — projects.py dùng, trước đây thiếu khi frozen).
+  2. **ARM track + bấm phím MIDI keyboard → VU meter không animation**: vòng tick VU (`masterVUAnimRef` useEffect) có block early-return `if (!isPlaying && !isRecActive)` vẽ VU RỖNG và return — nên bật ARM + bấm phím MIDI (không play/record) thì `midiVuActivityRef` có giá trị nhưng không bao giờ được đọc → VU đứng yên. Fix: thêm điều kiện `liveMidiVu` (scan midiVuActivityRef > 0.001) — có MIDI activity live thì KHÔNG early-return, track VU nhảy theo activity + decay như bình thường.
+- **Các file ảnh hưởng:** `app/main.py` (STATIC_DIR → settings.APP_DIR), `engine.spec` (datas/pathex absolute + app/models), `app/static/js/app.jsx` (VU tick liveMidiVu guard), `app/static/js/app.precompiled.js` (rebuild), `app/templates/index.html` (bump v=202608081200)
+- **Ghi chú/Test (nếu có):** BUILD OK 1107797 bytes, node --check OK, pytest 86 passed + 5 skipped (test_sf_convert fail pre-existing — path `/app/...` docker-only). Backend import OK — STATIC_DIR resolve đúng cả dev lẫn frozen.
+
+---
 ### [2026-08-04] Task: Mở PIANO ROLL TAB lúc main đang play KHÔNG được tắt âm — handleEditMidiInTab stopAllPlayback có điều kiện
 - **Tóm tắt thay đổi:** User báo "đang play main session, dblclick mở Piano roll tab → âm bị tắt". Thủ phạm: `handleEditMidiInTab` (15983) gọi `stopAllPlayback()` VÔ ĐIỀU KIỆN ngay khi mở tab — dừng mọi nguồn main đang phát. Fix: `if (!isPlaying) stopAllPlayback()` — chỉ clean-stop khi KHÔNG play main (tránh stuck route khi đổi tab giữa sub-tab); main đang play → mở tab → âm main tiếp tục. Nhánh play sub-tab tự stopAllPlayback trước khi play nên không xung đột route.
 - **Các file ảnh hưởng:** `app/static/js/app.jsx` (handleEditMidiInTab), `app/static/js/app.precompiled.js` (rebuild), `app/templates/index.html` (bump v=202608042300)
@@ -2925,219 +3031,3 @@
 - **FIX (app.jsx effect follow):** `const playing = isPlaying || !!st.isPlaying` — follow khi piano roll play LẪN main play; deps thêm `st.isPlaying`.
 - **Các file ảnh hưởng:** `app/static/js/app.jsx`, `app/templates/index.html` (?v=202608070950), `wiki.md`. Rebuild precompiled (build PASS).
 - **Ghi chú/Test:** hard refresh → PIANO ROLL → play (tab) → playhead ở giữa + notes trôi trái; stop → về đầu.
-
-### [2026-08-08 08:15] Task: Desktop VST3/AU — scan + Plugin Manager (branch desktop-alone, spec 2026-08-08)
-- **Checkout:** branch `desktop-alone` ✓ — cài đặt tính năng VST plugin theo spec (scan/display/assign).
-- **Backend:**
-  (1) `app/core/vst_scanner.py` — `NativePluginScanner.scan_directories(paths)` — quét .vst3 (mọi OS) + .component (macOS) → {id, name, type, format, category, vendor, path, is_instrument, has_native_gui} — đọc vendor từ Info.plist (best-effort).
-  (2) `app/api/v1/desktop_plugins.py` — `POST /api/v1/desktop/plugins/scan` (router prefix /api/v1/desktop — đúng spec) — nhận custom_directories/scan_formats/force_rescan → response {status, os, scanned_directories, total_found, plugins[]}; thư mục mặc định theo OS (Linux /opt/daw_engine/vst3+~/.vst3; Windows %ProgramFiles%\Common Files\VST3; macOS /Library/Audio/Plug-Ins/Components).
-  (3) `app/main.py` — include desktop_plugins_router.
-- **Frontend (app.jsx):** nút "🔌 Quét VST Directory…" (cuối instrument dropdown) → PluginManager Modal: input path + [Scan] (spinner/Scanning…) + list plugin (tên/path/format) → click plugin → `setTrackInstrumentWithUndo(trackId, plugin_id, "Name (VST3)")` (label track cập nhật) + đóng modal. Giữ instrumentDropdownTrackId khi mở modal (không null).
-- **Các file ảnh hưởng:** app/core/vst_scanner.py, app/api/v1/desktop_plugins.py, app/main.py, app/static/js/app.jsx, app/templates/index.html (?v=202608080815), wiki.md. Build precompiled PASS.
-- **Ghi chú/Test:** python test scanner (2 plugin giả OK). E2E: mở track instrument dropdown → Quét VST Directory → nhập /opt/daw_engine/vst3 → Scan → chọn plugin → label track thành "🎵 Name (VST3)".
-
-### [2026-08-08 08:20] Task: VST3 — ĐỒNG BỘ state + render đúng tiếng (spec 2 điểm then chốt)
-- **User chỉ ra 2 điểm:** (A) synth_engine phải đầy đủ {type, plugin_id, plugin_name, format, plugin_path}; (B) render dùng `pedalboard.load_plugin(plugin_path)`.
-- **A — Frontend (app.jsx):**
-  (1) `setTrackInstrumentWithProgram` — thêm param `vstMeta` ({plugin_name, format, plugin_path}) — synth_engine vst3 → spread đủ 5 field theo spec (isVstInstrument: id vst3_/au_ hoặc vstMeta.format).
-  (2) `setTrackInstrumentWithUndo` — nhận + truyền vstMeta.
-  (3) Dropdown VST + PluginManager modal — gọi với vstMeta (plugin_name/format/plugin_path từ item scan).
-  (4) API `/available` (`vst_engine.list_available`) — vst_instruments thêm `path` + id chuẩn `vst3_<name>`.
-- **B — Backend:**
-  (1) `vst_engine.load_vst` — NHẬN PATH trực tiếp (đuôi .vst3/.so/.component hoặc chứa dấu / hoặc \ → os.path.exists → VST3Plugin(path)) — fallback tên cũ.
-  (2) `render_engine` — đọc `se.plugin_path` → `load_vst(vst_path or instrument_id)` — nhánh Pedalboard render (đã có — midi_messages + Pedalboard([vst])) giờ load đúng plugin.
-- **Các file ảnh hưởng:** app/core/vst_engine.py, app/core/render_engine.py, app/static/js/app.jsx, app/templates/index.html (?v=202608080820), wiki.md. Build PASS (plugin_path ×3) + ast OK.
-- **Ghi chú/Test:** chọn VST (dropdown hoặc modal) → track.synth_engine = {type:'vst3', plugin_id, plugin_name, format, plugin_path} → Render/Bounce → render_engine load VST3 qua pedalboard theo path → WAV đúng tiếng plugin (cần pedalboard cài + plugin thật ở path).
-
-### [2026-08-08 08:30] Task: Windows .exe installer — packaging theo spec (PyInstaller + Tauri v2 sidecar)
-- **Spec 08-27:** Dual-Process Desktop — (1) daw_engine.exe (PyInstaller — FastAPI bind localhost:8000) + (2) Tauri v2 shell (WebView2) — sidecar — NSIS/MSI installer.
-- **Môi trường hiện tại = Linux → KHÔNG build .exe trực tiếp** → tạo ĐỦ file build + CI workflow (windows-latest) → artifact .exe tải xuống.
-- **Đã tạo:**
-  (1) `main.py` (root entry — uvicorn 127.0.0.1:8000 + auto-open browser).
-  (2) `engine.spec` (spec — collect pedalboard/soundfile/fluidsynth DLL + static/templates/storage datas + hiddenimports; console=False; upx).
-  (3) `src-tauri/` — tauri.conf.json (window url=http://127.0.0.1:8000, externalBin daw_engine, targets nsis+msi), Cargo.toml (tauri 2 + tauri-plugin-shell), build.rs, src/main.rs, src/lib.rs (spawn sidecar + kill khi window destroyed — theo spec), capabilities/default.json (shell:allow-spawn/open), icons (32/128 png + icon.ico — tools/mkicons.py).
-  (4) `.github/workflows/windows-build.yml` — windows-latest: python 3.11 + node + rust → pip deps → Babel precompile → pyinstaller engine.spec → copy sidecar (daw_engine-x86_64-pc-windows-msvc.exe) → npx tauri build → upload artifact (NSIS .exe + MSI + daw_engine.exe).
-- **Các file ảnh hưởng:** main.py, engine.spec, src-tauri/*, .github/workflows/windows-build.yml, tools/mkicons.py, wiki.md.
-- **Ghi chú/Test:** push lên GitHub (branch desktop-alone) → Actions → workflow_dispatch (hoặc tag v*) → tải artifact "SonicForgeDAW-windows" → chạy setup.exe trên máy Windows (test: daw_engine xuất hiện Task Manager, /docs mở, VST3 scan, Export WAV).
-
-### [2026-08-08 08:35] Task: FIX build Windows — supertonic cần numpy<2.0
-- **Lỗi CI:** `supertonic 1.2.1 requires numpy<2.0,>=1.21.0, but you have numpy 2.2.6` — pedalboard kéo supertonic (ràng buộc numpy<2) — requirements `numpy>=1.24.0` cài 2.2.6 → conflict.
-- **FIX:** requirements.txt — `numpy>=1.24.0,<2.0`. Kiểm tra: code KHÔNG dùng API numpy 2.x (np.float_/np.int_...) → pin <2.0 an toàn.
-- **Các file ảnh hưởng:** requirements.txt, wiki.md.
-- **Ghi chú/Test:** chạy lại workflow windows-build — pip cài numpy 1.26.x — hết conflict supertonic.
-
-### [2026-08-08 08:40] Task: FIX build Windows (2) — supertonic kéo onnx2tf/opencv/pocket-tts xung đột numpy
-- **Lỗi CI:** sau pin numpy<2.0 — conflict NGƯỢC: ml-dtypes/onnx2tf/opencv-python/pocket-tts yêu cầu numpy>=2 — supertonic (pedalboard dep) yêu cầu numpy<2 — KHÔNG có numpy nào thỏa cả 2.
-- **Nguyên nhân:** supertonic (AI synth — kéo onnx2tf/opencv/pocket-tts/ml-dtypes) — dự án KHÔNG dùng supertonic.
-- **FIX:** (1) requirements.txt — BỎ `pedalboard` (chú thích lý do); (2) CI — `pip install -r requirements.txt` + `pip install --no-deps pedalboard>=0.8.0` (chỉ pedalboard core — load_plugin VST3 KHÔNG cần supertonic).
-- **Các file ảnh hưởng:** requirements.txt, .github/workflows/windows-build.yml, wiki.md.
-- **Ghi chú/Test:** chạy lại workflow — hết conflict numpy; pedalboard (VST3 render) vẫn hoạt động qua --no-deps.
-
-### [2026-08-08 08:45] Task: FIX build Windows (3) — cargo not found (thiếu Rust)
-- **Lỗi:** `npx tauri build — failed to run 'cargo metadata' ... program not found` — máy build thiếu Rust toolchain.
-- **FIX:** (1) `build_windows.bat` — script 1 lệnh: kiểm tra Python/Node → TỰ CÀI Rust (rustup -y) nếu thiếu → pip deps (+ pedalboard --no-deps) → Babel → pyinstaller engine.spec → copy sidecar → npx tauri build; (2) `BUILD_WINDOWS.md` — yêu cầu (Python, Node, Rust MSVC, VS Build Tools C++, WebView2) + build thủ công + checklist kiểm thử theo spec IV.
-- **Các file ảnh hưởng:** build_windows.bat, BUILD_WINDOWS.md, wiki.md.
-- **Ghi chú/Test:** trên máy Windows: chạy `build_windows.bat` (cmd) → sinh setup.exe; CI (windows-latest — dtolnay/rust-toolchain) không bị lỗi này.
-
-### [2026-08-08 08:50] Task: FIX build_windows.bat — lỗi "was unexpected at this time"
-- **Lỗi:** `.\build_windows.bat` → `... was unexpected at this time.` — batch parse: dấu `(` `)` trong chuỗi echo (vd `(tick "Add to PATH")`) phá block `(...)`; `|| ( ... )` kết hợp cũng rủi ro.
-- **FIX:** viết lại batch an toàn: bỏ mọi ngoặc trong echo, dùng `if errorlevel 1 ( ... )` thuần, echo KHÔNG DẤU (tránh codepage), quote `"pedalboard>=0.8.0"` (dấu `>` = redirect trong cmd).
-- **Các file ảnh hưởng:** build_windows.bat, wiki.md.
-- **Ghi chú/Test:** chạy lại `build_windows.bat` trên Windows — hết lỗi parse; nếu thiếu Rust → tự cài rustup rồi tiếp tục.
-
-### [2026-08-08 08:55] Task: FIX build_windows.bat — dừng im lặng ở [4/6] (npm install nuốt lỗi)
-- **Lỗi:** script dừng ở [4/6] Precompile JS không message — `npm install >nul 2>nul` nuốt lỗi → babel thiếu → `exit /b 1` im lặng.
-- **FIX (build_windows.bat):** (1) [4/6] — bỏ `>nul 2>nul` (hiện lỗi), check `if errorlevel 1` + check tồn tại `node_modules\@babel\cli\bin\babel.js` với message rõ; (2) [6/6] — tương tự cho `npm install -D @tauri-apps/cli` (bỏ nuốt lỗi + check).
-- **Các file ảnh hưởng:** build_windows.bat, wiki.md.
-- **Ghi chú/Test:** chạy lại `.\build_windows.bat` — nếu npm install fail sẽ thấy lỗi thật (network/registry) thay vì dừng im.
-
-### [2026-08-08 09:00] Task: FIX build_windows.bat — Babel fail dừng im (exit /b 1 không message)
-- **Lỗi:** [4/6] npm OK ("up to date") — nhưng node babel fail → `if errorlevel 1 exit /b 1` — THOÁT im lặng về prompt.
-- **FIX (build_windows.bat bước 4):** in từng bước (npm OK → kiem tra babel → chay Babel) + MỌI điểm fail có `echo FAIL: ... + pause` (không exit im).
-- **Các file ảnh hưởng:** build_windows.bat, wiki.md.
-- **Ghi chú/Test:** chạy lại — nếu Babel fail sẽ THẤY lỗi thật (thường: node_modules thiếu @babel/cli hoặc lỗi syntax source). WORKAROUND: nếu chỉ env (không phải syntax) — bản `app.precompiled.js` hiện có vẫn dùng được (đã build sẵn) — có thể comment dòng babel trong script.
-
-### [2026-08-08 09:10] Task: FIX tauri build — thiếu `use tauri::Manager`
-- **Lỗi Rust:** `no method named 'manage' found for &mut tauri::App` + `no method named 'state'` — trait `Manager` (cung cấp manage/state) chưa được import.
-- **FIX (src-tauri/src/lib.rs):** thêm `use tauri::Manager;`.
-- **Các file ảnh hưởng:** src-tauri/src/lib.rs, wiki.md.
-- **Ghi chú/Test:** chạy lại `npx tauri build` — compile tiếp (lỗi khác nếu có — thường là linker MSVC nếu thiếu VS Build Tools).
-
-### [2026-08-08 09:15] Task: FIX tauri build (2) — lifetime `state` (thiếu ; sau if-let)
-- **Lỗi Rust:** `error[E0597]: state does not live long enough` — temporary (MutexGuard) của `state.0.lock()` drop muộn hơn state.
-- **FIX (src-tauri/src/lib.rs):** thêm `;` sau if-let block (temporary dropped sớm — theo gợi ý compiler).
-- **Các file ảnh hưởng:** src-tauri/src/lib.rs, wiki.md.
-- **Ghi chú/Test:** chạy lại `npx tauri build` — compile tiếp.
-
-### [2026-08-08 09:20] Task: FIX daw_engine.exe — ModuleNotFoundError celery.fixups
-- **Lỗi chạy exe:** `No module named 'celery.fixups'` — celery import động qua kombu.symbol_by_name (app/tasks/worker.py) — PyInstaller không bắt được hidden module.
-- **FIX (engine.spec):** thêm hiddenimports celery family: celery.fixups(+django), celery.backends(+redis), celery.schedules, celery.app.builtins, kombu.transport.redis, billiard, vine, redis.
-- **Các file ảnh hưởng:** engine.spec, wiki.md.
-- **Ghi chú/Test:** build lại `pyinstaller engine.spec --clean --noconfirm` → chạy daw_engine.exe → server khởi động (localhost:8000).
-
-### [2026-08-08 09:25] Task: FIX tauri build — Access denied khi copy sidecar (daw_engine đang chạy)
-- **Lỗi:** tauri-build panic `Os { code: 5, kind: PermissionDenied }` — không copy được externalBin — vì `daw_engine.exe` ĐANG CHẠY (test lần trước — tiến trình giữ file).
-- **FIX (build_windows.bat [6/6]):** thêm `taskkill /F /IM daw_engine.exe >nul 2>nul` trước `npx tauri build`.
-- **Các file ảnh hưởng:** build_windows.bat, wiki.md.
-- **Ghi chú/Test:** (1) tay: Task Manager → kết thúc mọi `daw_engine.exe` → `npx tauri build` lại; (2) script mới tự kill.
-
-### [2026-08-08 09:30] Task: FIX daw_engine mở tab browser liên tục + không kill được process
-- **Lỗi:** (1) exe mở tab browser liên tục; (2) taskkill không giết được process.
-- **Nguyên nhân:** (1) main.py `threading.Timer(2.0, webbrowser.open)` — mở browser mỗi lần exe chạy (Tauri shell ĐÃ mở window localhost — thừa); (2) PyInstaller ONEFILE = parent + child — Tauri `child.kill()` chỉ giết PARENT → CHILD ORPHAN chạy mãi (server sống → vẫn mở tab qua timer cũ).
-- **FIX:**
-  (1) `main.py` — XÓA auto-open browser (Tauri window url=localhost:8000 đảm nhiệm; standalone mở tay).
-  (2) `src-tauri/src/lib.rs` — khi window destroyed: child.kill() + `taskkill /F /T /IM daw_engine.exe` (kill CẢ TREE — cả parent + child onefile).
-  (3) `build_windows.bat` — `taskkill /F /T /IM` (tree).
-- **Các file ảnh hưởng:** main.py, src-tauri/src/lib.rs, build_windows.bat, wiki.md.
-- **Ghi chú/Test:** build lại exe + tauri → đóng app → Task Manager không còn daw_engine (cả tree) + không mở tab mới. Kill tay lúc này: `taskkill /F /T /IM daw_engine.exe`.
-
-### [2026-08-08 09:40] Task: Docker compose không chạy — THIẾU .env (tạo ở task 08-07 nhưng chưa có file .env)
-- **Kiểm tra:** `docker-compose.prod.yml` (tạo task 08-07) — `env_file: .env` × 3 services (web/worker/beat) — NHƯNG **`.env` KHÔNG TỒN TẠI** (chỉ `.env.example` 516B) → `docker compose up` → lỗi `env file .env not found` → không chạy.
-- **FIX:**
-  (1) TẠO `.env` (từ .env.example — REDIS_URL/CELERY/OPENAI/SECRET_KEY/IMAGE — SECRET_KEY đổi giá trị mặc định; ghi chú đổi trước production).
-  (2) `docker-compose.prod.yml` — tối giản volumes: bỏ 3 volume chồng (sf_uploads/sf_processed/sf_db — sf_db bao cả storage) → **1 volume `sf_data:/app/app/storage`**.
-- **Lưu ý khác:** image `${IMAGE:-sonicforge-studio:latest}` — phải `docker build -t sonicforge-studio:latest .` TRƯỚC (hoặc set IMAGE=registry...); `docker-compose.prod.yml` dùng cho PRODUCTION (không mount source) — dev dùng `docker-compose.yml` cũ.
-- **Các file ảnh hưởng:** .env (mới), docker-compose.prod.yml, wiki.md.
-- **Ghi chú/Test:** `docker compose -f docker-compose.prod.yml up -d` — hết lỗi env file; nếu image chưa build → `docker build -t sonicforge-studio:latest .` trước.
-
-### [2026-08-08 09:45] Task: FIX màn đen — 401 không mở màn login (dùng cached user sai)
-- **Log bản mới:** `GET /api/v1/auth/profile 401` + `/plugins/available 401` — root rỗng (màn đen).
-- **Kịch bản:** browser còn `sonic_token` CŨ (ký SECRET_KEY cũ — .env mới đổi secret) + `sonic_user` CACHED → `checkAuthStatus` profile 401 → `catch` DÙNG cached user → vào app "như đã login" → mọi API 401 (token đã bị xóa) → giao diện không dữ liệu = đen, KHÔNG mở login.
-- **FIX:**
-  (1) `app.jsx checkAuthStatus catch` — phát hiện 401 (errMsg chứa 401/Unauthorized/Không xác thực) → BỎ QUA cached → xóa token + mở AuthModal(login); cached chỉ dùng khi lỗi MẠNG (offline).
-  (2) `services/api.js` — 401 bất kỳ → `window.__onAuthFail()` (mở login ngay).
-  (3) `app.jsx` — đăng ký `window.__onAuthFail` (setCurrentUser null + mở login).
-- **Các file ảnh hưởng:** app/static/js/app.jsx, app/static/js/services/api.js, app/templates/index.html (?v=202608080945), wiki.md. Build PASS.
-- **Ghi chú/Test:** hard refresh server → 401 → HIỆN MÀN ĐĂNG NHẬP (thay vì đen) → đăng nhập admin (DEFAULT_ADMIN_PASSWORD trong .env) → vào app. (User cũ có token hỏng → tự động về login.)
-
-### [2026-08-08 09:50] Task: FIX màn đen (2) — 401 detail tiếng Việt không khớp matcher
-- **Vẫn đen sau 0945:** log `GET /api/v1/plugins/available 401` — checkAuthStatus catch — isAuthErr FALSE vì 401 detail của server (auth.py) = "Thiếu Token xác thực hoặc Token không hợp lệ" / "Token đã hết hạn hoặc không hợp lệ" — KHÔNG chứa '401'/'Unauthorized' → cached user vẫn được dùng → đen.
-- **FIX (app.jsx):** matcher thêm `errMsg.includes('Token')` (phủ cả 2 detail của auth.py).
-- **Các file ảnh hưởng:** app/static/js/app.jsx, app/templates/index.html (?v=202608080950), wiki.md. Build PASS.
-- **Ghi chú/Test:** hard refresh (Ctrl+Shift+R — nạp ?v=0950) → 401 → MÀN ĐĂNG NHẬP hiện → login admin/admin123 (hoặc DEFAULT_ADMIN_PASSWORD trong .env) → vào app.
-
-### [2026-08-08 09:55] Task: FIX desktop — nhiều daw_engine + không tắt được + màn đen
-- **Lỗi:** mỗi lần mở app → spawn thêm daw_engine (cũ không tắt — kill thiếu /T hoặc Tauri crash không kịp kill) → nhiều instance → port 8000 chiếm → lần mở sau: window load vào server cũ / không bind được → MÀN ĐEN (giống docker — nhưng nguyên nhân khác: instance/port).
-- **FIX (main.py — entry daw_engine.exe):** SINGLE-INSTANCE — kiểm tra port 8000 (socket bind test) — NẾU ĐÃ CÓ server → `sys.exit(0)` (window dùng server đang chạy — không spawn thêm).
-- **SECRET_KEY:** đã ổn định (env > {STORAGE}/.secret_key persist > ephemeral) — không phải nguyên nhân.
-- **Các file ảnh hưởng:** main.py, wiki.md. (Cần build lại exe: pyinstaller engine.spec --clean --noconfirm → copy sidecar → npx tauri build.)
-- **Kill tay lúc này:** `taskkill /F /T /IM daw_engine.exe` (có /T — giết CẢ tree — PyInstaller onefile parent+child).
-
-### [2026-08-08 10:00] Task: FIX docker không nhận bản 0950 — compose prod THIẾU build:
-- **Kết quả kiểm tra container:** index.html trỏ `?v=202608080820` (image CŨ) — dù build lại.
-- **Nguyên nhân:** `docker-compose.prod.yml` services CHỈ có `image:` — KHÔNG có `build:` → `docker compose build` KHÔNG build gì → image `sonicforge-studio:latest` giữ nguyên (0820) → up dùng image cũ.
-- **FIX:** thêm `build: .` vào web/worker/beat (compose build hoạt động; image: giữ cho registry prod).
-- **Các file ảnh hưởng:** docker-compose.prod.yml, wiki.md.
-- **Chạy lại trên server:**
-  ```
-  docker compose -f docker-compose.prod.yml build --no-cache
-  docker compose -f docker-compose.prod.yml up -d --force-recreate
-  docker compose -f docker-compose.prod.yml exec web sh -c "grep -o 'precompiled.js?v=[0-9]*' app/templates/index.html"   # phải = 0950
-  ```
-
-### [2026-08-08 10:05] Task: FIX màn đen (3) — Rules of Hooks: `if (!isOpen) return null` TRƯỚC hooks ở MỌI modal
-- **Báo cáo:** 0950 load OK + CSS 200 + không lỗi console — vẫn đen trơn.
-- **NGUYÊN NHÂN GỐC (React crash → unmount → đen):** AuthModal có `if (!isOpen) return null;` TRƯỚC các hooks (useState/useEffect) — VI PHẠM Rules of Hooks — khi login MỞ lần đầu (isOpen false→true) → hook order thay đổi (0→11) → React throw "Rendered more hooks..." → App unmount → MÀN ĐEN. Trước đây không bao giờ mở login (token luôn OK) — fix 401 (09:45-09:50) mở login → LỘ BUG.
-- **FIX:** chuyển `if (!isOpen) return null;` XUỐNG SAU tất cả hooks (trước return JSX) cho **9 modal**: AuthModal, AIConfigModal, PluginManagerModal, ProfileModal, SaveProjectModal, OpenProjectModal, SaveAsModal, SystemManagerModal, AIPresetModal.
-- **Các file ảnh hưởng:** app/static/js/app.jsx, app/templates/index.html (?v=202608081005), wiki.md. Build PASS.
-- **Ghi chú/Test:** rebuild image (compose build --no-cache + up -d --force-recreate) → hard refresh → MÀN ĐĂNG NHẬP HIỆN (thay vì đen) → login admin/admin123 → vào app.
-
-### [2026-08-08 10:10] Task: FIX màn đen (4) — tự host CDN (tailwind/lucide/react) — bỏ phụ thuộc mạng ngoài
-- **Báo cáo:** 1005 vẫn đen trơn + không log thêm. Log có `(index):64 cdn.tailwindcss.com should not be used in production` — index.html dòng 9 load **cdn.tailwindcss.com (CDN JIT)** — tailwind.min.css local = **0 bytes (rỗng)** — nếu CDN bị chặn/treo (mạng VN) → **TOÀN BỘ UI không có style → modal login text đen trên nền đen → "đen trơn"** (không phải lỗi JS).
-- **FIX (index.html):** tự host tất cả CDN → `/static/js/vendor/` (đã download):
-  - `tailwindcss-cdn.js` (407KB — JIT script)
-  - `react.production.min.js` + `react-dom.production.min.js` (18.3.1 UMD — bỏ unpkg)
-  - `lucide.min.js` (bỏ unpkg)
-  - Còn font-awesome (cdnjs) — chỉ icons — không chết app (để CDN).
-- **Các file ảnh hưởng:** app/templates/index.html, app/static/js/vendor/* (4 file mới), wiki.md.
-- **Ghi chú/Test:** rebuild image → hard refresh → UI có style (tailwind local JIT) → MÀN ĐĂNG NHẬP hiển thị bình thường → login admin/admin123.
-
-### [2026-08-08 10:15] Task: Chẩn đoán màn đen — thêm log [AUTH]/[GLOBAL-ERR]/ErrorBoundary
-- **Bằng chứng user:** #root TRỐNG (React render rồi UNMOUNT — SFRoute logs có) — KHÔNG lỗi console — không profile request.
-- **Thêm chẩn đoán (app.jsx):**
-  (1) `[AUTH]` logs — checkAuthStatus (token?/profile OK?/lỗi?/isAuthErr?) + __onAuthFail.
-  (2) `window.addEventListener('error')` → `[GLOBAL-ERR]` + `unhandledrejection` → `[GLOBAL-REJECT]`.
-  (3) **ErrorBoundary** bọc App — componentDidCatch → `[BOUNDARY-ERR]` + fallback hiển thị lỗi đỏ (thay vì đen).
-- **Các file ảnh hưởng:** app/static/js/app.jsx, app/templates/index.html (?v=202608081015), wiki.md. Build PASS.
-- **Ghi chú/Test:** rebuild image → hard refresh → dán MỌI dòng console (sẽ có [AUTH].../[GLOBAL-ERR]/[BOUNDARY-ERR] hoặc fallback đỏ — xác định chính xác điểm chết).
-
-### [2026-08-08 10:20] Task: Chẩn đoán (2) — log root children sau mount
-- **Kết quả 1015:** KHÔNG lỗi (không GLOBAL-ERR/BOUNDARY) — [AUTH] token rỗng → mở login + __onAuthFail chạy — App mounted (effects) — NHƯNG root trống (1005) — App KHÔNG crash.
-- **Thêm (1020):** `[APP] mounted — root children: N | authModalOpen: ... | currentUser: ...` (mỗi render — bắt đầu useEffect không deps).
-- **Các file ảnh hưởng:** app/static/js/app.jsx, app/templates/index.html (?v=202608081020), wiki.md. Build PASS.
-- **Ghi chú/Test:** rebuild image → hard refresh → dán log `[APP] mounted` + MỌI dòng — biết root có children (render) hay 0 (App return null / chưa render).
-
-### [2026-08-08 10:30] Task: Docker build — apt-get chạy lại mỗi lần → check skip + bỏ --no-cache
-- **Yêu cầu user:** `RUN apt-get update && apt-get install` chạy lại mỗi lần build (tốn thời gian) — kiểm tra đã cài thì bỏ qua.
-- **Nguyên nhân:** các lần build gần đây dùng `--no-cache` (hướng dẫn trước để ép lấy code mới) → MỌI layer chạy lại → apt chạy lại.
-- **FIX:**
-  (1) `Dockerfile` — RUN apt: `if command -v fluidsynth && ffmpeg && Xvfb → echo skip; else apt-get update && install ...` (check trước — package đã có → bỏ qua apt).
-  (2) **QUAN TRỌNG:** build THƯỜNG không dùng `--no-cache` — `docker compose -f docker-compose.prod.yml build` — layer apt + `pip install -r requirements.txt` CACHED (chỉ chạy khi requirements/Dockerfile/base đổi); `COPY . .` (code mới — precompiled/?v=) tự cache-bust → vẫn lấy bản mới. Chỉ dùng `--no-cache` khi thật sự cần (ép apt/pip cập nhật).
-- **Các file ảnh hưởng:** Dockerfile, wiki.md.
-- **Ghi chú/Test:** build 2 lần liên tiếp (không --no-cache) → lần 2: apt layer "CACHED" (không chạy) — nhanh hơn nhiều.
-
-### [2026-08-08 10:30] Task: Chẩn đoán (3) — App render UI nhưng root children 0
-- **Kết quả 1025:** `[APP] return UI` XUẤT HIỆN (App return 26006 chạy — UI render) NHƯNG `root children: 0` mọi lần — App render nhưng DOM KHÔNG có con → nghi root.render không commit (hoặc render vào nơi khác).
-- **Thêm (1030):** log tại root.render — `[ROOT] render() vừa gọi — root children` + `[ROOT] sau 500ms — root children | html len` — xác định DOM có được commit hay không.
-- **Các file ảnh hưởng:** app/static/js/app.jsx, app/templates/index.html (?v=202608081030), wiki.md. Build PASS.
-- **Ghi chú/Test:** rebuild image (KHÔNG --no-cache — build thường) → hard refresh → dán log [ROOT].
-
-### [2026-08-08 10:35] Task: FIX màn đen (5) — chuyển sang legacy render (ReactDOM.render — đồng bộ commit)
-- **Kết quả 1030:** `[ROOT] render() vừa gọi — root children: 0` + `sau 500ms — root children: 0 | html len: 0` — **createRoot render KHÔNG commit DOM** (App render chạy — return UI logs — mounted effects chạy — nhưng DOM rỗng) — môi trường/server lạ (browser VN — có thể liên quan scheduler/postMessage bị can thiệp).
-- **FIX (app.jsx cuối):** bỏ `ReactDOM.createRoot().render()` (concurrent) → **`ReactDOM.render()` (legacy — ĐỒNG BỘ commit)** + giữ ErrorBoundary (fallback đỏ) + GLOBAL-ERR/REJECT logs.
-- **Các file ảnh hưởng:** app/static/js/app.jsx, app/templates/index.html (?v=202608081035), wiki.md. Build PASS (createRoot còn = comment).
-- **Ghi chú/Test:** rebuild image (build thường — KHÔNG --no-cache) → hard refresh → nếu root children > 0 → UI hiện (login) → đăng nhập.
-
-### [2026-08-08 11:00] Task: Màn đen — React 18.2.0 thay 18.3.1 + revert test biến
-- **Chuỗi chẩn đoán:** root children 0 dù App render chạy (return UI) + effects chạy (mounted) + không lỗi + ReactDOM commit OK (HELLO children 1) — bất khả thi về lý thuyết → nghi vấn vendor React 18.3.1 UMD (tự host từ unpkg) có vấn đề trên môi trường.
-- **Làm:** (1) revert `const _appResult` (build lỗi VarRedeclaration — loc lạ 29438) về return trực tiếp — build PASS; (2) đổi vendor → **React/react-dom 18.2.0 production** (tải từ unpkg — 10737/131882 bytes).
-- **Các file ảnh hưởng:** app/static/js/app.jsx, app/static/js/vendor/react*.production.min.js (18.2.0), app/templates/index.html (?v=202608081055), wiki.md.
-- **Ghi chú/Test:** rebuild image → hard refresh → nếu UI hiện (login) → 18.3.1 UMD là thủ phạm → giữ 18.2.0. Nếu vẫn 0 → thử: tab ẩn danh / trình duyệt khác (Edge/Firefox) → dán log.
-
-### [2026-08-08 11:05] Task: Màn đen — trace xác nhận App render từ root.render bình thường
-- **Trace (1100):** `App @ 1551 → of → Rk → Si → ... → Q.render (react-dom:266) → anonymous 1583` — App render ĐÚNG từ ReactDOM.render (root) — không render lạ.
-- Vẫn root children 0 sau commit — bất khả thi lý thuyết — cần xem DOM thực (root có gì / App có trong body không).
-- **Bước:** user chạy trong console (trang đang đen):
-  `JSON.stringify({rootHTML: document.getElementById('root').innerHTML.slice(0,200), rootChildren: document.getElementById('root').children.length, appInDOM: document.body.innerHTML.includes('SonicForge')})`
-- **Các file ảnh hưởng:** app/static/js/app.jsx (trace), app/templates/index.html (?v=202608081100), wiki.md. Build PASS.
-- **Ghi chú/Test:** dán kết quả JSON → xác định App render vào đâu (root? body? nơi khác?).