Lint and fix tests

- Remove unused refreshCmdForShell function (lint error)
- Update process-compose version in flakeref test from v0.40.2 to v1.46.0
  (old version used Go 1.19.3 which fails on newer macOS)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: Lagoja

internal/devbox/refresh.go

@@ -52,21 +52,6 @@ func (d *Devbox) refreshCmd() string {
 	return fmt.Sprintf(`eval "$(devbox %s)" && hash -r`, devboxCmd)
 }
 
-func (d *Devbox) refreshCmdForShell(format string) string {
-	devboxCmd := fmt.Sprintf("shellenv --preserve-path-stack -c %q", d.projectDir)
-	if d.isGlobal() {
-		devboxCmd = "global shellenv --preserve-path-stack -r --format " + format
-	} else {
-		devboxCmd = fmt.Sprintf("shellenv --preserve-path-stack -c %q --format %s", d.projectDir, format)
-	}
-
-	if format == "nushell" {
-		// Nushell doesn't have eval; use overlay or source with temporary file
-		return fmt.Sprintf(`devbox %s | save -f ~/.cache/devbox-env.nu; source ~/.cache/devbox-env.nu`, devboxCmd)
-	}
-	return fmt.Sprintf(`eval "$(devbox %s)" && hash -r`, devboxCmd)
-}
-
 func (d *Devbox) refreshAlias() string {
 	if isFishShell() {
 		return fmt.Sprintf(

testscripts/add/add_platforms_flakeref.test.txt

@@ -4,12 +4,12 @@ exec devbox install
 
 # aside: choose armv7l-linux to verify that the add actually works on the
 # current host that is unlikely to be armv7l-linux
-exec devbox add github:F1bonacc1/process-compose/v0.40.2 --exclude-platform armv7l-linux
+exec devbox add github:F1bonacc1/process-compose/v1.46.0 --exclude-platform armv7l-linux
 json.superset devbox.json expected_devbox1.json
 
 # verify that the package is installed on this platform
 exec devbox run -- process-compose version
-stdout '0.40.2'
+stdout '1.46.0'
 
 -- devbox.json --
 {
@@ -24,7 +24,7 @@ stdout '0.40.2'
   "packages": {
     "hello": "",
     "cowsay": "latest",
-    "github:F1bonacc1/process-compose/v0.40.2": {
+    "github:F1bonacc1/process-compose/v1.46.0": {
       "excluded_platforms": ["armv7l-linux"]
     }
   }