fix: change environment from ec2 to local

- Update ENV_ENVIRONMENT from ec2 to local in Makefile
- Align with PR #23 to support local development only

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Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: suna-big

Makefile

@@ -6,7 +6,7 @@ test:
 
 .PHONY: run
 run:
-	@ENV_ENVIRONMENT=ec2 go run main.go
+	@ENV_ENVIRONMENT=local go run main.go
 
 .PHONY: generate
 generate: