Add docs job to build workflow and include PDF in combined artifact

Moves the PDF build into ccpp.yml as a `docs` job so the artifact is
accessible to the `package` job. doc.yml is kept as-is for standalone
doc builds.

https://claude.ai/code/session_01KR8kVy6SZfAFds84XFTt6d

Author: claude

.github/workflows/ccpp.yml

@@ -57,9 +57,27 @@ jobs:
             ModbusScope.zip
             ModbusScope_setup.exe
 
+  docs:
+    runs-on: ubuntu-latest
+
+    container:
+      image: docker://jgeudens/doc-latex:20250124_build_1
+    steps:
+      - uses: actions/checkout@v6.0.0
+
+      - name: Build doc
+        run: |
+          sh create_doc.sh
+          mv docs/manual/_build/latex/modbusscope.pdf modbusscope-user-manual.pdf
+
+      - uses: actions/upload-artifact@v7.0.0
+        with:
+          name: modbusscope-user-manual
+          path: modbusscope-user-manual.pdf
+
   package:
     runs-on: ubuntu-latest
-    needs: [linux, windows]
+    needs: [linux, windows, docs]
 
     steps:
       - uses: actions/download-artifact@v8.0.1
@@ -72,6 +90,11 @@ jobs:
           name: modbusscope-windows
           path: all-artifacts/windows
 
+      - uses: actions/download-artifact@v8
+        with:
+          name: modbusscope-user-manual
+          path: all-artifacts/docs
+
       - uses: actions/upload-artifact@v7.0.0
         with:
           name: modbusscope-all-platforms