update documentation versioning

Author: drebbe-intrepid

doc/requirements.txt

@@ -1,4 +1,5 @@
 cython>=0.20
 m2r2
 docutils>=0.18.1,<0.21
-furo
+furo
+dunamai

doc/source/conf.py

@@ -56,10 +56,27 @@
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
-# The short X.Y version.
-version = "918.14"
-# The full version, including alpha/beta/rc tags.
-release = version
+# Get version dynamically from the same source as pyproject.toml
+try:
+    # First, try to import from the generated ics module (same as pyproject.toml)
+    sys.path.insert(0, os.path.abspath("../../gen"))
+    import ics
+    version = ics.__version__
+    release = ics.__full_version__
+except ImportError:
+    try:
+        # Fallback: try dunamai directly (for build environments)
+        import dunamai
+        version = dunamai.Version.from_git().serialize(metadata=False)
+        release = dunamai.Version.from_git().serialize(format="v{base}-{commit}-{timestamp}")
+    except ImportError:
+        # Fallback if neither is available
+        version = "unknown"
+        release = version
+    except Exception:
+        # Fallback if not in a git repository or other issues
+        version = "unknown"
+        release = version
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.