V4 dev with nsc git-checkout update-submodules and --dissociate (#3)

Most v4 changes should be here:
- Update @babel/traverse and braces
- Add --dissociate
- Use nsc for submodule checkout
- Make CI job not fail on pull requests
   (Compare gh-action,ref:main <-> ns-action,ref:main
    and gh-action,ref: <-> ns-action,ref:
    instead of gh-action,ref: <-> ns-action,ref:main
    This should work well on PRs and still have regression
    test coverage for NSL-2974.)

.github/workflows/ci.yml

@@ -16,24 +16,44 @@ jobs:
     runs-on: [nscloud-ubuntu-22.04-staging-amd64-2x4-with-cache, nscloud-git-mirror-5gb]
 
     steps:
-      - name: Github Checkout
+      - name: Github Checkout current
         uses: actions/checkout@v4
-      - name: Namespace Checkout
+      - name: Namespace Checkout Current
         uses: ./ # Uses an action in the root directory
         with:
-          path: nscloud
-          ref: main
+          path: nscloud-current
+      - name: Compare current
+        run: |
+          if cmp --silent -- action.yml nscloud-current/action.yml; then
+            echo "files contents are identical"
+          else
+            echo "files differ:"
+
+            diff action.yml nscloud-current/action.yml
+
+            exit 1
+          fi
+
+      - name: Github Checkout main
+        uses: actions/checkout@v4
+        with:
+          path: github-main
+      - name: Namespace Checkout main
+        uses: ./ # Uses an action in the root directory
+        with:
+          path: nscloud-main
       - name: Compare main
         run: |
-          if cmp --silent -- action.yml nscloud/action.yml; then
+          if cmp --silent -- github-main/action.yml nscloud-main/action.yml; then
             echo "files contents are identical"
           else
             echo "files differ:"
 
-            diff action.yml nscloud/action.yml
+            diff github-main/action.yml nscloud-main/action.yml
 
             exit 1
           fi
+
       - uses: ruby/action-slack@v3.2.1
         with:
           payload: |

README.md

@@ -1,8 +1,8 @@
 # Namespace Cloud optimized Checkout Action
 
 This action is a specialized and optimized version of [`actions/checkout`](https://github.com/actions/checkout) for Namespace Runners.
-It expects to run in a Namespace Runner and it will fail for otherwise. It also expects that the _git mirror_ feature is enabled in 
-the Namespace runner. 
+It expects to run in a Namespace Runner and it will fail for otherwise. It also expects that the _git mirror_ feature is enabled in
+the Namespace runner.
 
 This action uses [Namespace Cache Volumes](https://namespace.so/docs/concepts/storage) to store a mirror of your git repository, and uses it speed up the checkout process.
 
@@ -26,7 +26,7 @@ steps:
 runs-on: [nscloud-ubuntu-22.04-amd64-2x4-with-cache, nscloud-git-mirror-5gb]
 steps:
   - name: Checkout
-    uses: namespacelabs/nscloud-checkout-action@v2
+    uses: namespacelabs/nscloud-checkout-action@v4
     with:
       # Repository name with owner. For example, actions/checkout
       # Default: ${{ github.repository }}
@@ -63,6 +63,17 @@ steps:
       #
       # Default: false
       submodules: ''
+
+      dissociate: ''
+      # Dissociate the checkout (and optionally submodules, if any) from the mirror:
+      # `true` to dissociate the main repository or 'recursive' to dissociate the main
+      # repository and all submodules.
+      # Dissociate instructs git to copy all git objects to a checkout directory. After
+      # this, the checkout has no link to the Namespace Git mirror.
+      # This allows docker-based GitHub actions to perform git operations on the checkout,
+      # such as git status.
+      #
+      # Default: false
 ```
 
 ## Development

action.yml

@@ -29,7 +29,7 @@ inputs:
 
   fetch-depth:
     description: 'Number of commits to fetch. 0 indicates all history for all branches and tags.'
-    default: 1
+    default: "1"
 
   path:
     description: 'Relative path under $GITHUB_WORKSPACE to place the repository'
@@ -42,7 +42,14 @@ inputs:
 
       When the `ssh-key` input is not provided, SSH URLs beginning with `git@github.com:` are
       converted to HTTPS.
-    default: false
+    default: "false"
+
+  dissociate:
+    description: >
+      Whether to dissociate the checkout (and submodules, if any) from the Namespace Git mirror:
+      `true` to dissociate the main checkout, `recursive` to dissociate the main checkout and
+      all submodules.
+    default: "false"
 
 runs:
   using: node20