fix: remove redundant nil check for staticcheck S1009

- Remove unnecessary nil check before len() as len(nil) returns 0
- Add golangci-lint to devbox packages

Author: rkoster

deployment/instance/state/builder.go

@@ -225,7 +225,7 @@ func (b *builder) renderJobTemplates(
 
 func (b *builder) defaultAddress(networkRefs []NetworkRef, agentState agentclient.AgentState) (string, error) {
 
-	if (networkRefs == nil) || (len(networkRefs) == 0) {
+	if len(networkRefs) == 0 {
 		return "", errors.New("Must specify network") //nolint:staticcheck
 	}
 

devbox.json

@@ -0,0 +1,18 @@
+{
+  "$schema": "https://raw.githubusercontent.com/jetify-com/devbox/0.16.0/.schema/devbox.schema.json",
+  "packages": [
+    "go@latest",
+    "ruby@3.4.8",
+    "golangci-lint@latest"
+  ],
+  "shell": {
+    "init_hook": [
+      "echo 'Welcome to devbox!' > /dev/null"
+    ],
+    "scripts": {
+      "test": [
+        "echo \"Error: no test specified\" && exit 1"
+      ]
+    }
+  }
+}