fix(providers): make cline config path cross-platform

docs/providers/cline.md

@@ -7,10 +7,18 @@
 | Scope   | Path |
 |---------|------|
 | Project | — |
-| Global  | `~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json` |
+| Global  | See OS-specific paths below |
 
 Project-level config is not supported.
 
+### OS-specific global config paths
+
+| OS      | Path |
+|---------|------|
+| macOS   | `~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json` |
+| Linux   | `~/.config/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json` |
+| Windows | `%APPDATA%\Code\User\globalStorage\saoudrizwan.claude-dev\settings\cline_mcp_settings.json` |
+
 ## Format
 
 ```json

internal/providers/cline.go

@@ -1,6 +1,8 @@
 package providers
 
 import (
+	"path/filepath"
+
 	"github.com/pantheon-org/iris/internal/io"
 	"github.com/pantheon-org/iris/internal/types"
 )
@@ -10,8 +12,9 @@ type ClineProvider struct {
 }
 
 func clineConfigPath() string {
-	return io.UserHomePath(
-		"Library", "Application Support", "Code", "User", "globalStorage",
+	return filepath.Join(
+		io.UserConfigDir(),
+		"Code", "User", "globalStorage",
 		"saoudrizwan.claude-dev", "settings", "cline_mcp_settings.json",
 	)
 }

internal/providers/cline_test.go

@@ -3,11 +3,27 @@ package providers_test
 import (
 	"os"
 	"path/filepath"
+	"strings"
 	"testing"
 
 	"github.com/pantheon-org/iris/internal/providers"
 )
 
+func TestClineProvider_DefaultPath_RootedAtUserConfigDir(t *testing.T) {
+	configDir, err := os.UserConfigDir()
+	if err != nil {
+		t.Skip("os.UserConfigDir() unavailable:", err)
+	}
+	p := providers.NewClineProvider()
+	got := p.ConfigFilePath("")
+	if !strings.HasPrefix(got, configDir) {
+		t.Errorf("default path %q does not start with UserConfigDir %q", got, configDir)
+	}
+	if !strings.HasSuffix(got, "cline_mcp_settings.json") {
+		t.Errorf("default path %q does not end with cline_mcp_settings.json", got)
+	}
+}
+
 func TestClineProvider_Config(t *testing.T) {
 	tmp := t.TempDir()
 	p := providers.NewClineProviderWithPath(filepath.Join(tmp, "cline_mcp_settings.json"))