Merge pull request #37 from Agent-Field/docs/af-call-primary-readme

docs: lead quickstart with `af call`, keep curl as HTTP alternative

Author: AbirAbbas

README.md

@@ -27,6 +27,14 @@ Other tools run a single LLM pass over the diff with a fixed checklist. PR-AF **
 
 ## One-Call DX
 
+Trigger it with the `af` CLI (requires af ≥ 0.1.87) — it streams live progress and prints the result:
+
+```bash
+af call pr-af.review --in '{"pr_url": "https://github.com/owner/repo/pull/123"}'
+```
+
+Prefer raw HTTP? Hit the API directly with curl:
+
 ```bash
 curl -X POST http://localhost:8080/api/v1/execute/async/pr-af.review \
   -H "Content-Type: application/json" \