diff --git a/.gitignore b/.gitignore
index 8a168c8..3979c50 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,5 +41,9 @@ app/storage/soundfonts/
 # build-time vendor trees & accidental artifacts (never commit)
 native_bridge/vcpkg_installed/
 native_bridge/sfizz-src/
+
+# install/ portable package: chi commit 3 binary nho (bridge/lib/app);
+# daw_engine/ ~1.8GB tu build bang build_install.ps1
+install/daw_engine/
 app/static/js/_diag.txt
 src-tauri/resources/daw_engine" && cp -r*
diff --git a/README.md b/README.md
index caccda8..489f7f2 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,25 @@ docker-compose up -d --build
 
 Mở trình duyệt và truy cập: **http://localhost:8000**
 
+### 📦 Portable Install — thư mục `install/`
+
+`install/` là bản portable chạy thẳng (không cần cài đặt): `install/sonicforge-daw.exe`.
+
+| Thành phần | Vai trò | Trạng thái |
+|---|---|---|
+| `daw_vst_bridge.exe` | Native host bridge (C++, nối DAW ↔ VSTi qua shared memory) | **commit sẵn** (~1.4MB) |
+| `libfluidsynth-3.dll` | FluidSynth runtime (SF2/SF3) | **commit sẵn** (~0.5MB) |
+| `sonicforge-daw.exe` | Tauri app shell | **commit sẵn** (~10MB) |
+| `daw_engine/` | Python engine (PyInstaller onedir) — ~1.8GB (tensorflow/torch/cv2) | **KHÔNG commit** — tự build |
+
+3 binary C++/Tauri commit sẵn để người pull không cần toolchain (VS + vcpkg + vst3sdk submodule + sfizz-src). Phần `daw_engine/` quá nặng cho git — build bằng script có sẵn:
+
+```powershell
+powershell -ExecutionPolicy Bypass -File build_install.ps1
+```
+
+Script build frontend (`node build.mjs`) + engine (`pyinstaller engine.spec`) rồi copy vào `install/daw_engine/`. Muốn build lại cả bridge/app từ source: `powershell -ExecutionPolicy Bypass -File build_windows.ps1` (ra installer NSIS/MSI, không phải portable).
+
 ## 📁 Cấu Trúc Dự Án
 
 ```
diff --git a/build_install.ps1 b/build_install.ps1
new file mode 100644
index 0000000..1eacb44
--- /dev/null
+++ b/build_install.ps1
@@ -0,0 +1,56 @@
+# build_install.ps1 - Build install/ (portable package) tu source, Windows
+# Chay:  powershell -ExecutionPolicy Bypass -File build_install.ps1
+#
+# install/ = portable package (chay truc tiep, khong can cai dat):
+#   daw_vst_bridge.exe        native host bridge (C++)  - DA COMMIT san
+#   libfluidsynth-3.dll       FluidSynth runtime        - DA COMMIT san
+#   sonicforge-daw.exe        Tauri app shell           - DA COMMIT san
+#   daw_engine/               Python engine (PyInstaller onedir, ~1.8GB)
+#                             - KHONG commit -> script nay tu build
+#
+# 3 binary C++/Tauri da commit de nguoi pull khong can toolchain
+# (VS2019/2022 + vcpkg + vst3sdk submodule + sfizz-src). Chay lai
+# build_windows.ps1 neu muon build lai bridge/app tu source.
+# LUU Y: file nay chi dung ky tu ASCII (PowerShell 5.1).
+$ErrorActionPreference = "Stop"
+Set-Location $PSScriptRoot
+
+Write-Host "== [1/4] Kill tien trinh cu =="
+Get-Process -Name "daw_engine","sonicforge-daw","daw_vst_bridge" -ErrorAction SilentlyContinue | Stop-Process -Force -ErrorAction SilentlyContinue
+Start-Sleep -Milliseconds 500
+
+Write-Host "== [2/4] Frontend bundle (app.jsx -> app.precompiled.js) =="
+npm install --no-audit --no-fund
+if (-not (Test-Path "node_modules\@babel\standalone")) {
+  npm install @babel/standalone --no-audit --no-fund
+}
+node build.mjs
+
+Write-Host "== [3/4] Build daw_engine.exe (PyInstaller onedir) =="
+python -m pip install -r requirements.txt pyinstaller pywin32
+pyinstaller engine.spec --clean --noconfirm
+if (-not (Test-Path "dist\daw_engine\daw_engine.exe")) {
+  Write-Host "ERROR: dist\daw_engine\daw_engine.exe khong ton tai" -ForegroundColor Red
+  exit 1
+}
+python tools\verify_bundle.py
+if ($LASTEXITCODE -ne 0) {
+  Write-Host "ERROR: bundle thieu asset" -ForegroundColor Red
+  exit 1
+}
+
+Write-Host "== [4/4] Copy vao install\ =="
+New-Item -ItemType Directory -Force "install" | Out-Null
+if (Test-Path "install\daw_engine") { Remove-Item -Recurse -Force "install\daw_engine" }
+Copy-Item "dist\daw_engine\*" "install\daw_engine\" -Recurse -Force
+# 3 binary (bridge/lib/app) da commit san trong install/ - khong ghi de,
+# neu user da build lai bridge/app thi tu copy vao day.
+
+Write-Host ""
+Write-Host "== DONE =="
+Write-Host "  install\daw_engine\daw_engine.exe   (moi build)"
+Write-Host "  install\daw_vst_bridge.exe          (commit san)"
+Write-Host "  install\libfluidsynth-3.dll         (commit san)"
+Write-Host "  install\sonicforge-daw.exe          (commit san)"
+Write-Host ""
+Write-Host "Chay: install\sonicforge-daw.exe"
diff --git a/install/daw_vst_bridge.exe b/install/daw_vst_bridge.exe
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diff --git a/install/libfluidsynth-3.dll b/install/libfluidsynth-3.dll
new file mode 100644
index 0000000..14ad074
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diff --git a/install/sonicforge-daw.exe b/install/sonicforge-daw.exe
new file mode 100644
index 0000000..9c4d1a1
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