Docs/windows install launch instructions

docs/getting-started/installation.md

@@ -27,8 +27,25 @@ Create the environment from the checked-in `.yml` file:
 conda env create -f requirements/saxshell-py312.yml
 ```
 
+### Windows users
+
+On native Windows, create the environment from the Windows-specific environment
+file:
+
+```cmd
+conda env create -f requirements\saxshell-py312-win.yml
+```
+
 If the environment already exists, update it from the same file:
 
+```cmd
+conda env update -n saxshell-py312 -f requirements\saxshell-py312-win.yml --prune
+```
+
+### Linux, macOS, and WSL users
+
+If the environment already exists, update it from the default environment file:
+
 ```bash
 conda env update -n saxshell-py312 -f requirements/saxshell-py312.yml --prune
 ```
@@ -38,12 +55,53 @@ logs and tracebacks remain visible in the terminal.
 
 ## Launch SAXSShell
 
-Start the main SAXSShell application from the repository root:
+Start the main SAXSShell application from the repository root.
+
+### Linux, macOS, and WSL users
 
 ```bash
 PYTHONPATH=src conda run --no-capture-output -n saxshell-py312 python -m saxshell.saxs
 ```
 
+### Windows users
+
+There are two supported launch methods depending on whether you are using
+Anaconda Prompt or Windows PowerShell.
+
+#### From Anaconda Prompt
+
+Activate the environment, set `PYTHONPATH`, and launch the SAXS UI:
+
+```cmd
+conda activate saxshell-py312
+set PYTHONPATH=src
+python -m saxshell.saxs
+```
+
+You can also launch without activating the environment:
+
+```cmd
+set PYTHONPATH=src
+conda run --no-capture-output -n saxshell-py312 python -m saxshell.saxs
+```
+
+#### From Windows PowerShell
+
+Set `PYTHONPATH` using PowerShell syntax, then launch through `conda run`:
+
+```powershell
+$env:PYTHONPATH = "src"
+conda run --no-capture-output -n saxshell-py312 python -m saxshell.saxs
+```
+
+If your PowerShell session is configured for conda activation, this also works:
+
+```powershell
+conda activate saxshell-py312
+$env:PYTHONPATH = "src"
+python -m saxshell.saxs
+```
+
 The application opens to the main SAXS workflow. Create or select a dedicated
 project folder in **Project Setup** after your trajectory-derived frames and
 clusters are ready.

requirements/saxshell-py312-win.yml

@@ -0,0 +1,47 @@
+name: saxshell-py312
+channels:
+  - conda-forge
+  - defaults
+channel_priority: strict
+dependencies:
+  # Core runtime
+  - python=3.12
+  - pip
+  - numpy
+  - scipy
+  - pandas
+  - matplotlib
+  - lmfit
+  - uncertainties
+  - networkx
+  - pyyaml
+  - requests
+
+  # Data / file formats / parallel workflow support
+  - xarray
+  - dask
+  - distributed
+  - netcdf4
+  - h5py
+  - pyarrow
+  - bottleneck
+
+  # Qt GUI stack for Windows
+  - pyside6
+  - qtpy
+  - pyqtgraph
+
+  # Interactive/dev tooling
+  - ipython
+  - ipykernel
+  - jupyterlab
+  - pytest
+  - pytest-cov
+  - coverage
+  - pre-commit
+  - mypy
+
+  # Pip-only / project-specific packages
+  - pip:
+      - pydream
+      - xraydb>=4.5.8