g2g, first pass at beefing up Sanity Functions skills

AGENTS.md

@@ -54,6 +54,7 @@ If the Sanity MCP server (`https://mcp.sanity.io`) is available, use `list_sanit
 | **TypeGen** | `typegen`, `typescript`, `types`, `infer`, `satisfies`, `type generation` | `skills/sanity-best-practices/references/typegen.md` |
 | **App SDK** | `app sdk`, `custom app`, `useDocuments`, `useDocument`, `DocumentHandle`, `SanityApp`, `sdk-react` | `skills/sanity-best-practices/references/app-sdk.md` |
 | **Blueprints** | `blueprints`, `IaC`, `infrastructure`, `stack`, `defineBlueprint` | `skills/sanity-best-practices/references/blueprints.md` |
+| **Sanity Functions** | `functions`, `serverless`, `event handler`, `documentEventHandler`, `defineDocumentFunction`, `sanity.blueprint.ts` | `skills/sanity-best-practices/references/functions.md`, `skills/sanity-functions/SKILL.md` |
 
 ### Using the Knowledge Router
 

package.json

@@ -4,7 +4,8 @@
   "description": "AI agent resources for Sanity development",
   "private": true,
   "scripts": {
-    "validate": "skills-ref validate ./skills/sanity-best-practices && skills-ref validate ./skills/content-modeling-best-practices && skills-ref validate ./skills/seo-aeo-best-practices && skills-ref validate ./skills/content-experimentation-best-practices",
+    "validate": "skills-ref validate ./skills/sanity-best-practices && skills-ref validate ./skills/content-modeling-best-practices && skills-ref validate ./skills/seo-aeo-best-practices && skills-ref validate ./skills/content-experimentation-best-practices && skills-ref validate ./skills/sanity-functions",
+    "validate:sanity-functions": "skills-ref validate ./skills/sanity-functions",
     "validate:sanity": "skills-ref validate ./skills/sanity-best-practices",
     "validate:content-modeling": "skills-ref validate ./skills/content-modeling-best-practices",
     "validate:seo": "skills-ref validate ./skills/seo-aeo-best-practices",

skills/sanity-best-practices/SKILL.md

@@ -22,6 +22,7 @@ Reference these guidelines when:
 - Migrating content from other systems
 - Building custom apps with the Sanity App SDK
 - Managing infrastructure with Blueprints
+- Writing backend code with Sanity Functions
 
 ## Quick Reference
 
@@ -38,6 +39,7 @@ Reference these guidelines when:
 - `project-structure` - Monorepo and embedded Studio patterns
 - `app-sdk` - Custom applications with Sanity App SDK
 - `blueprints` - Infrastructure as Code with Sanity Blueprints
+- `functions` - Backend code with Sanity Functions
 
 ### Topic Guides