Update embed-code to v1.2.4 so checkSamples no longer passes silently

.github/workflows/gradle-wrapper-validation.yml

@@ -0,0 +1,29 @@
+name: Gradle Wrapper validation
+
+# `migrate` distributes this workflow only to Hugo-only repositories that carry a
+# Gradle Wrapper. They keep the wrapper merely to run Hugo through Gradle tasks, and
+# none of their workflows sets Gradle up through `gradle/actions/setup-gradle`, so
+# nothing else checks that the wrapper JAR is genuine. A JVM repository does not
+# receive it: `setup-gradle`, used by every workflow that runs Gradle there,
+# validates the wrapper itself.
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - '**'
+
+permissions:
+  contents: read
+
+jobs:
+  validation:
+    name: Validate Gradle Wrapper
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout latest code
+        uses: actions/checkout@v6
+
+      - name: Validate Gradle Wrapper
+        uses: gradle/actions/wrapper-validation@v6

SPINE_RELEASE.md

@@ -156,6 +156,18 @@ versioned folder and configured via `module.mounts`.
          item_visible: false
    ```
 
+3. If you moved the content in step 1, update `docs-path` in
+   `docs/_settings/v1.embed-code.yml`, the code embedding config for version 1,
+   so that it follows the moved content:
+
+   ```yml
+   code-path: "../_code"
+   docs-path: "../content/docs/1"   # Change the path from `../content/docs` to `../content/docs/1`.
+   ```
+
+   The `checkSamples` and `embedCode` Gradle tasks read this file and fail
+   if `docs-path` points to a folder that does not exist.
+
 Now version 2 will be available at the `https://spine.io/docs/` URL.
 
 Get updates into the main website:

docs/_settings/v1.embed-code.yml

@@ -1,5 +1,2 @@
 code-path: "../_code"
-docs-path: "../content/docs/1"
-embed-mappings:
-  - code-path: "../_code"
-    docs-path: "../content/docs/1"
+docs-path: "../content/docs"

docs/assets/js/docs/architecture-diagram.js

@@ -15,7 +15,7 @@
 /**
  * This is a JavaScript file that backs the Spine architecture diagram.
  *
- * Please see `/docs/1/introduction/architecture.md` for usage.
+ * Please see `/docs/introduction/architecture.md` for usage.
  */
 
 $(