test: symlinked .mintlify/skills directory

.mintlify/skills

@@ -0,0 +1 @@
+../skills

ai/skillmd.mdx

@@ -46,7 +46,7 @@
   better results using your product with their AI tools.
 </Tip>
 
 ## `skill.md` structure
 
 Mintlify generates a `skill.md` file following the [agentskills.io specification](https://agentskills.io/specification). The generated file includes:
 
@@ -84,6 +84,29 @@
   You can use both approaches together with a root `skill.md` file and `.mintlify/skills/` directory. The discovery index includes all skills.
 </Note>
 
+### Use symlinks to avoid duplication
+
+If your skill files live elsewhere in your repository (for example, in a `plugins/` or `skills/` directory), you can symlink `.mintlify/skills` to that location instead of duplicating files:
+
+```bash
+# Skills live in a top-level skills/ directory
+ln -s ../skills .mintlify/skills
+```
+
+```
+project/
+  skills/
+    payments/
+      SKILL.md
+    analytics/
+      SKILL.md
+  .mintlify/
+    skills -> ../skills
+  docs.json
+```
+
+Mintlify resolves symlinks during deployment, so the skill files are discovered and served as if they were directly inside `.mintlify/skills/`. This works with both directory symlinks and individual skill symlinks.
+
 ### Frontmatter fields
 
 Custom `skill.md` files must start with YAML frontmatter.