fix: downgrade dotenv missing file from FAILED to info message

Non-fatal in Docker where env vars come from container config.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

compliance-agent/src/main.rs

@@ -4,7 +4,7 @@ use compliance_agent::{agent, api, config, database, scheduler, ssh, webhooks};
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
     match dotenvy::dotenv() {
         Ok(path) => eprintln!("[dotenv] Loaded from: {}", path.display()),
-        Err(e) => eprintln!("[dotenv] FAILED: {e}"),
+        Err(_) => eprintln!("[dotenv] No .env file found, using environment variables"),
     }
 
     let _telemetry_guard = compliance_core::telemetry::init_telemetry("compliance-agent");