ci: Enable fail on htmlcheck error

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ env:
 jobs:
 
   rip-and-test:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 45
     steps:
     - name: Dump GitHub context
@@ -57,7 +57,7 @@ jobs:
         .github/scripts/verify-clean-repo.sh
 
   rip-headless:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 45
     steps:
     - name: Dump GitHub context
@@ -109,7 +109,7 @@ jobs:
         .github/scripts/verify-clean-repo.sh
 
   rip-rtai:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 45
     steps:
     - name: Dump GitHub context
@@ -138,7 +138,7 @@ jobs:
         .github/scripts/verify-clean-repo.sh
 
   rip-and-test-clang:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 45
     steps:
     - name: Dump GitHub context
@@ -172,7 +172,7 @@ jobs:
         .github/scripts/verify-clean-repo.sh
 
   cppcheck:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 45
     steps:
     - name: Checkout repository
@@ -192,7 +192,7 @@ jobs:
         scripts/cppcheck.sh
 
   shellcheck:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 45
     steps:
     - name: Checkout repository
@@ -215,7 +215,7 @@ jobs:
         scripts/shellcheck.sh
 
   htmldocs:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 60
     steps:
     - name: Dump GitHub context
@@ -241,15 +241,15 @@ jobs:
       run: scripts/manpage-name-check.py --enforce docs/build/man
     - name: Check for derived-id section references
       run: scripts/docs-anchor-check.py --enforce
-    - name: Verify no untracked or modified files after build
-      run: |
-        #*.po and documentation.pot are modifyed by build. Ignore them for now.
-        .github/scripts/verify-clean-repo.sh ':(exclude)docs/po/*.po' ':(exclude)docs/po/documentation.pot'
     - name: HTML checks
       run: |
         set -x
         #-w sets warn only, remove to generate a CI failure on error
         scripts/htmlcheck.sh -w
+    - name: Verify no untracked or modified files after build
+      run: |
+        #*.po and documentation.pot are modified by build. Ignore them for now.
+        .github/scripts/verify-clean-repo.sh ':(exclude)docs/po/*.po' ':(exclude)docs/po/documentation.pot'
     - name: Tar linuxcnc-doc
       run: |
         set -x
@@ -261,13 +261,24 @@ jobs:
         archive: false
         path: linuxcnc-doc.tar.gz
         if-no-files-found: error
+    - name: Tar linuxcnc-doc-all
+      run: |
+        set -x
+        tar -czf linuxcnc-doc-all.tar.gz docs/build
+    - name: Upload linuxcnc-doc-all artifact
+      uses: actions/upload-artifact@v7
+      with:
+        name: linuxcnc-doc-all
+        archive: false
+        path: linuxcnc-doc-all.tar.gz
+        if-no-files-found: error
 
   package-arch:
     runs-on: ${{ matrix.runner }}
     timeout-minutes: 75
     strategy:
       matrix:
-        runner: ["ubuntu-24.04", "ubuntu-24.04-arm"]
+        runner: ["ubuntu-26.04", "ubuntu-26.04-arm"]
         image: ["debian:bookworm", "debian:trixie", "debian:sid"]
         include:
           - allow_fail: False
@@ -357,7 +368,7 @@ jobs:
         if-no-files-found: error
 
   package-indep:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 75
     strategy:
       matrix:
@@ -410,7 +421,7 @@ jobs:
         .github/scripts/build-package-indep.sh
     - name: Verify no untracked or modified files after build
       run: |
-        #*.po and documentation.pot are modifyed by build. Ignore them for now.
+        #*.po and documentation.pot are modified by build. Ignore them for now.
         .github/scripts/verify-clean-repo.sh ':(exclude)VERSION' ':(exclude)debian/changelog' ':(exclude)docs/po/*.po' ':(exclude)docs/po/documentation.pot'
     - name: Install debian packages
       run: |
@@ -447,7 +458,7 @@ jobs:
     if: (github.event_name == 'release' && github.event.action == 'published') || startsWith(github.ref, 'refs/tags/')
     permissions:
       contents: write
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
     - name: Download artifacts
       uses: actions/download-artifact@v8