add desktop build support

pyproject.toml

@@ -0,0 +1,35 @@
+[build-system]
+requires = ["setuptools>=68", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "argonode"
+version = "0.1.0"
+description = "Node-based image analysis app with a Python backend and React frontend."
+readme = "GWYDDION_FEATURE_GAP.md"
+requires-python = ">=3.10"
+dependencies = [
+    "aiohttp>=3.9,<4",
+    "matplotlib>=3.8,<4",
+    "numpy>=1.26,<3",
+    "pillow>=10,<12",
+    "scikit-image>=0.22,<1",
+    "scipy>=1.12,<2",
+]
+
+[project.optional-dependencies]
+spm = [
+    "gwyfile>=0.2",
+    "igor>=0.3",
+    "nanonispy>=1.1",
+]
+dev = [
+    "pytest>=8,<9",
+]
+desktop = [
+    "pyinstaller>=6,<7",
+    "pywebview>=5,<6",
+]
+
+[tool.setuptools.packages.find]
+include = ["backend*"]