Use tag ref as dynamic project number

.github/workflows/documentation-build.yml

@@ -11,12 +11,18 @@ on:
       - 'doxygen_style.css'
   workflow_dispatch:
 
+env:
+  COCKATRICE_REF: ${{ github.ref_name }}    # Gives tag name if the commit is tagged, otherwise branch name
+
 jobs:
   docs:
     name: Doxygen
     runs-on: ubuntu-latest
 
     steps:
+      - name: Print environment variable
+        run: echo $COCKATRICE_REF
+
       - name: Checkout code
         uses: actions/checkout@v5
 

Doxyfile

@@ -1,4 +1,5 @@
 # Doxyfile 1.14.0
+# Docs: https://www.doxygen.nl/manual
 
 # This file describes the settings to be used by the documentation system
 # Doxygen (www.doxygen.org) for a project.
@@ -48,13 +49,13 @@ PROJECT_NAME           = "Cockatrice"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2.11
+PROJECT_NUMBER         = $(COCKATRICE_REF)
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewers a
 # quick idea about the purpose of the project. Keep the description short.
 
-PROJECT_BRIEF          =
+PROJECT_BRIEF          = A cross-platform virtual tabletop for multiplayer card games
 
 # With the PROJECT_LOGO tag one can specify a logo or an icon that is included
 # in the documentation. The maximum height of the logo should not exceed 55