Move skills to .agent directory

.agents/skills/agent-ready-cloudflare/mpp/SKILL.md

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+---
+name: agent-ready-mpp
+description: >
+  Sub-skill de agent-ready-cloudflare: Implement MPP Payment Discovery
+---
+# Implement MPP Payment Discovery
+
+Publish an OpenAPI document with MPP payment discovery metadata so AI agents
+can discover your payable endpoints via the
+[Machine Payment Protocol](https://mpp.dev)
+([spec](https://paymentauth.org/draft-payment-discovery-00.txt)).
+
+## Requirements
+
+- Serve `/openapi.json` at the site root with HTTP 200
+- Include `x-payment-info` extensions on payable operations
+- Each `x-payment-info` must declare `intent` (charge or session), `method` (tempo, stripe, lightning, card), and `amount`
+- Optionally include `currency`, `description`, and top-level `x-service-info` with categories
+
+## Example
+
+```json
+{
+  "openapi": "3.1.0",
+  "info": { "title": "My API", "version": "1.0" },
+  "paths": {
+    "/api/generate": {
+      "post": {
+        "x-payment-info": {
+          "intent": "charge",
+          "method": "stripe",
+          "amount": "0.01",
+          "currency": "USD",
+          "description": "Generate content"
+        }
+      }
+    }
+  }
+}
+```
+
+## Validate
+
+```http
+POST https://isitagentready.com/api/scan
+Content-Type: application/json
+
+{"url": "https://YOUR-SITE.com"}
+```
+
+Check that `checks.commerce.mpp.status` is `"pass"`.
+
+## References
+
+- [Machine Payment Protocol](https://mpp.dev)
+- [Payment Discovery Spec](https://paymentauth.org/draft-payment-discovery-00.txt)