Load MINIO_SECURE from env and replace adapter asserts with explicit errors.

Default TLS to enabled for production MinIO setups while keeping local and integration tests on plain HTTP via explicit secure=false configuration.

Co-authored-by: Cursor <[email protected]>

README.md

@@ -42,6 +42,7 @@ Requires Redis with the RedisJSON module (e.g. redis-stack).
 | `MINIO_ACCESS_KEY`   | Access key                                  |
 | `MINIO_SECRET_KEY`   | Secret key                                  |
 | `MINIO_BUCKET`       | Bucket name (created on connect if missing) |
+| `MINIO_SECURE`       | Use HTTPS (`true`/`false`; default: `true`) |
 
 Copy [`.env.example`](.env.example) to `.env` for local development. `RedisConfig.from_env()` and `MinioConfig.from_env()` load `.env` automatically when resolving configuration from the environment.
 
@@ -59,6 +60,7 @@ minio = MinioAdapter(
         access_key="minioadmin",
         secret_key="minioadmin",
         bucket="my-bucket",
+        secure=False,
     )
 )
 ```