Update install.md

Author: qectorlab

install.md

@@ -1,6 +1,12 @@
 # Installation Guide — QECTOR Decoder v0.6.6
 
-> ⚠️ ****LICENSING** & **COMPLIANCE** **NOTICE**** > **QECTOR** Decoder is **source-available**, not open source. It is free for personal, academic, and non-commercial research use. > **Commercial, institutional, lab, or product-integration use requires a paid commercial license.** > View pricing and request evaluation access at: **[https://qector.store/pricing](https://qector.store/pricing)** > Official contact: **[admin@qector.store](mailto:admin@qector.store)**
+> ⚠️ **LICENSING & COMPLIANCE NOTICE**
+>
+> **QECTOR Decoder is source-available, not open source.** It is free for personal, academic, and non-commercial research use.
+>
+> **Commercial, institutional, lab, or product-integration use requires a paid commercial license.**
+> * **View pricing & evaluation access:** [https://qector.store/pricing](https://qector.store/pricing)
+> * **Official contact:** [admin@qector.store](mailto:admin@qector.store)
 
 ---
 
@@ -12,51 +18,7 @@ For all standard use cases, install the pre-compiled, optimized binary wheel dir
 
 ### 1. Create a Virtual Environment (Recommended)
 
-```bash # Windows py -3.11 -m venv .venv .\.venv\Scripts\Activate.ps1
-
-# Linux / macOS
-
-python3 -m venv .venv source .venv/bin/activate
-
-## 2. Install via PyPI
-
-Upgrade `pip` first to ensure compatibility with modern binary wheels, then install **QECTOR**:
-
-```bash python -m pip install --upgrade pip python -m pip install qector-decoder-v3 ```
-
-*(Optional)* To install with compatibility layers and benchmarking tools:
-
-```bash python -m pip install *qector-decoder-v3[stim,bench]* ```
-
-## 3. Verify Installation
-
-Run the following command to confirm the binary is correctly installed and functioning:
-
-```bash python -c "from qector_decoder_v3 import UnionFindDecoder, BlossomDecoder; import qector_decoder_v3; print(f'**QECTOR** OK - v{qector_decoder_v3.__version__}')" ```
-
-**Expected Output:** ```text **QECTOR** OK - v0.6.6 ```
-
----
-
-## 🏢 Commercial & Source Access
-
-If your institution requires a custom build, specific feature flags (e.g., isolated **CUDA**/OpenCL configurations), or source-code review for security due diligence, this is **only available under a commercial license or Non-Disclosure Agreement (**NDA**)**.
-
-To request access to the restricted technical archive or discuss enterprise deployment:
-- **Web**: [https://qector.store/pricing](https://qector.store/pricing)
-- **Email**: [admin@qector.store](mailto:[admin@qector.store](mailto:[admin@qector.store](mailto:admin@qector.store)))
-
----
-
-## 🔧 Common Troubleshooting
-
-| Issue | Solution |
-| :--- | :--- |
-| **`ERROR: Could not find a version that satisfies the requirement`** | Ensure you are using Python 3.9, 3.10, 3.11, or 3.12. Upgrade pip: `python -m pip install --upgrade pip`. |
-| **`ImportError: DLL load failed / .so not found`** | The pre-compiled wheel may be incompatible with highly unusual OS configurations. Ensure you are on a standard 64-bit Windows, Linux, or macOS environment. |
-| **Missing optional dependencies (e.g., `stim`, `pymatching`)** | These are not bundled in the base wheel. Install them explicitly: `python -m pip install stim pymatching sinter`. |
-| **GPU acceleration not detected** | The base PyPI wheel includes CPU and standard GPU fallbacks. For specialized enterprise GPU deployments, contact `[admin@qector.store](mailto:[admin@qector.store](mailto:admin@qector.store))` for custom build options. |
-
----
-
-*© **2024**–**2026** Guillaume Lessard. All Rights Reserved. Protected by timestamped archival (Zenodo **DOI**) and commercial licensing terms.* ```
+**Windows (PowerShell):**
+```powershell
+py -3.11 -m venv .venv
+.\.venv\Scripts\Activate.ps1