Fix CI workflow file issues causing no-jobs-run failure

Two bugs that prevented any jobs from running:

1. action.yml contained only YAML comments (no 'on:' or 'jobs:' keys),
   making it an invalid workflow file. GitHub rejected it at parse time.
   Fixed by giving it a minimal valid structure with workflow_dispatch
   trigger only, so it never fires automatically.

2. build.yml perlcritic step referenced perl5/PVE/Storage/Custom/FreeNAS.pm
   which is not committed to the repository, causing a step failure.
   Removed — only FreeNAS.pm (LunCmd) is linted for now.

3. build.yml publish job used 'if: |' block scalar for a multi-line
   expression, which GitHub Actions rejects in expression position.
   Changed to a single inline expression string.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/action.yml

@@ -1,4 +1,13 @@
-# This workflow has been superseded by build.yml
-# It previously dispatched to the external freenas-proxmox-packer repository.
-# The build pipeline now lives entirely in build.yml in this repository.
-# This file is kept only to avoid breaking any external references; it does nothing.
+# This workflow has been superseded by build.yml.
+# It is retained only so that any external links to this file do not 404.
+# It will never trigger automatically.
+name: Deprecated (superseded by build.yml)
+
+on:
+  workflow_dispatch:
+
+jobs:
+  noop:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "This workflow is deprecated. The active CI pipeline is build.yml."

.github/workflows/build.yml

@@ -39,8 +39,7 @@ jobs:
         run: |
           echo "==> Running perlcritic..."
           perlcritic --profile .perlcriticrc \
-            perl5/PVE/Storage/LunCmd/FreeNAS.pm \
-            perl5/PVE/Storage/Custom/FreeNAS.pm
+            perl5/PVE/Storage/LunCmd/FreeNAS.pm
 
       - name: Shell script lint (shellcheck)
         run: |
@@ -266,9 +265,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [build, security]
     # Only publish on direct pushes (not PRs) to tracked branches or tags
-    if: |
-      github.event_name == 'push' &&
-      needs.build.outputs.channel != 'none'
+    if: github.event_name == 'push' && needs.build.outputs.channel != 'none'
 
     steps:
       - uses: actions/checkout@v4