Allow explicit MFE publish channel

Author: mephmanx

.github/workflows/publish.yml

@@ -19,6 +19,15 @@ on:
         options:
           - preview
           - production
+      module_channel:
+        description: "Module channel to publish (auto/preview/prod)"
+        required: false
+        default: "auto"
+        type: choice
+        options:
+          - auto
+          - preview
+          - prod
   push:
     tags:
       - "v*"
@@ -55,21 +64,38 @@ jobs:
         shell: bash
         env:
           REGISTRY_TARGET: ${{ inputs.registry_target || 'preview' }}
+          REQUESTED_MODULE_CHANNEL: ${{ inputs.module_channel || 'auto' }}
         run: |
+          case "${REQUESTED_MODULE_CHANNEL}" in
+            auto)
+              if [[ "${REGISTRY_TARGET}" == "production" ]]; then
+                MODULE_CHANNEL="prod"
+              else
+                MODULE_CHANNEL="preview"
+              fi
+              ;;
+            preview|prod)
+              MODULE_CHANNEL="${REQUESTED_MODULE_CHANNEL}"
+              ;;
+            *)
+              echo "Unsupported module_channel: ${REQUESTED_MODULE_CHANNEL}. Expected auto, preview, or prod."
+              exit 1
+              ;;
+          esac
+
           case "${REGISTRY_TARGET}" in
             production)
-              echo "module_channel=prod" >> "$GITHUB_OUTPUT"
               echo "registry_target=production" >> "$GITHUB_OUTPUT"
               ;;
             preview)
-              echo "module_channel=preview" >> "$GITHUB_OUTPUT"
               echo "registry_target=preview" >> "$GITHUB_OUTPUT"
               ;;
             *)
               echo "Unsupported registry_target: ${REGISTRY_TARGET}. Expected preview or production."
               exit 1
               ;;
           esac
+          echo "module_channel=${MODULE_CHANNEL}" >> "$GITHUB_OUTPUT"
           if [[ "${GITHUB_REF}" == refs/tags/* ]]; then
             echo "module_version=${GITHUB_REF_NAME}" >> "$GITHUB_OUTPUT"
           else