docs: add example curl commands to API reference

docs/API.md

@@ -8,23 +8,90 @@ Base URL: `http://localhost:8000`
 
 `GET /health` — Returns service status and dependency health.
 
+```bash
+curl http://localhost:8000/health
+```
+
+Example response:
+
+```json
+{"status": "ok", "version": "0.1.0"}
+```
+
 ### Authentication
 
 `POST /auth/register` — Create a new account.
+
+```bash
+curl -X POST http://localhost:8000/auth/register \
+  -H "Content-Type: application/json" \
+  -d '{"email": "dev@example.com", "password": "s3cret"}'
+```
+
 `POST /auth/login` — Obtain a JWT access token.
 
+```bash
+curl -X POST http://localhost:8000/auth/login \
+  -H "Content-Type: application/json" \
+  -d '{"email": "dev@example.com", "password": "s3cret"}'
+```
+
+Example response (store the token for authenticated calls):
+
+```json
+{"access_token": "<jwt>", "token_type": "bearer"}
+```
+
 ### Profiles
 
 `POST /profiles` — Create a profile with resume and GitHub username.
+
+```bash
+curl -X POST http://localhost:8000/profiles \
+  -H "Authorization: Bearer <jwt>" \
+  -H "Content-Type: application/json" \
+  -d '{"resume": "Experienced Python developer...", "github_username": "octocat"}'
+```
+
 `GET /profiles/{profile_id}` — Retrieve a profile.
+
+```bash
+curl http://localhost:8000/profiles/1 \
+  -H "Authorization: Bearer <jwt>"
+```
+
 `DELETE /profiles/{profile_id}` — Delete a profile and associated data.
 
+```bash
+curl -X DELETE http://localhost:8000/profiles/1 \
+  -H "Authorization: Bearer <jwt>"
+```
+
 ### Reviews
 
 `POST /reviews` — Request a new portfolio review for a profile.
+
+```bash
+curl -X POST http://localhost:8000/reviews \
+  -H "Authorization: Bearer <jwt>" \
+  -H "Content-Type: application/json" \
+  -d '{"profile_id": 1}'
+```
+
 `GET /reviews/{review_id}` — Retrieve a completed review.
+
+```bash
+curl http://localhost:8000/reviews/1 \
+  -H "Authorization: Bearer <jwt>"
+```
+
 `GET /reviews` — List reviews for the authenticated user (paginated).
 
+```bash
+curl "http://localhost:8000/reviews?page=1&page_size=10" \
+  -H "Authorization: Bearer <jwt>"
+```
+
 ## Interactive Docs
 
 When the API is running, visit: