New skill to put Learning Paths in draft mode

Author: jasonrandrews

.github/skills/draft-learning-path/SKILL.md

@@ -0,0 +1,56 @@
+---
+name: draft-learning-path
+description: "Toggle draft mode on a Learning Path _index.md. Use when: marking a learning path as draft, hiding a learning path from publication, adding draft: true to front matter, unpublishing or disabling a learning path, removing draft, publishing a learning path, taking a learning path out of draft."
+---
+
+# Draft Learning Path
+
+Sets `draft: true` and `cascade: draft: true` in the front matter of a Learning Path `_index.md` file so the page and all its child pages are excluded from the published site.
+
+For new content intake where the goal is to prevent unreviewed content from publishing, use `.github/skills/intake-metadata-update/SKILL.md` instead.
+
+## Draft block to insert
+
+The following YAML must be added to the front matter, after the `title:` field. Leave a blank line between `title:` and the draft block for readability:
+
+```yaml
+title: Your Learning Path Title
+
+draft: true
+cascade:
+    draft: true
+```
+
+## Workflow
+
+1. **Identify the target file**
+   - If the user specifies a path, use that.
+   - Otherwise, use the currently open or most recently edited `_index.md` file in the workspace.
+   - Confirm the file is a Learning Path `_index.md` (contains Hugo front matter between `---` markers).
+
+2. **Read the file**
+   - Read the file to inspect the existing front matter.
+
+3. **Apply the draft block**
+   - If `draft: true` and `cascade:` with `draft: true` already exist, inform the user it is already in draft mode and stop.
+   - If a `draft:` field exists but no `cascade:` block, replace the existing `draft:` line with the full draft block above.
+   - If no `draft:` field exists, insert the draft block after the `title:` field, with a blank line between them.
+
+4. **Confirm**
+   - Report the file path and confirm the draft block has been set.
+   - Remind the user that Hugo will exclude this file and all child pages from the built site until the draft block is removed.
+
+## Undraft workflow
+
+If the user asks to publish, undraft, or remove draft mode:
+
+1. **Identify the target file** (same as above).
+2. **Read the file** to locate the draft block.
+3. **Remove the draft block**
+   - Remove the `draft: true` line.
+   - Remove the `cascade:` block (`cascade:` and its indented `draft: true` child line).
+   - Remove any blank line that was added between `title:` and the draft block, restoring the original spacing.
+   - If no draft block exists, inform the user the file is already published and stop.
+4. **Confirm**
+   - Report the file path and confirm draft mode has been removed.
+   - Remind the user the Learning Path will now appear on the published site.