fix: normalize path separators in tests for Windows compatibility

Author: hannesrudolph

src/core/webview/__tests__/webviewMessageHandler.spec.ts

@@ -75,6 +75,7 @@ vi.mock("fs/promises", () => ({
 import * as vscode from "vscode"
 import fs from "fs/promises"
 import * as os from "os"
+import * as path from "path"
 import * as fsUtils from "../../../utils/fs"
 import { getWorkspacePath } from "../../../utils/path"
 import { ensureSettingsDirectoryExists } from "../../../utils/globalContext"
@@ -374,7 +375,7 @@ describe("webviewMessageHandler - deleteCustomMode", () => {
 
 	it("should delete a project mode and its rules folder", async () => {
 		const slug = "test-project-mode"
-		const rulesFolderPath = `/mock/workspace/.roo/rules-${slug}`
+		const rulesFolderPath = path.join("/mock/workspace", ".roo", `rules-${slug}`)
 
 		vi.mocked(mockClineProvider.customModesManager.getCustomModes).mockResolvedValue([
 			{
@@ -399,7 +400,7 @@ describe("webviewMessageHandler - deleteCustomMode", () => {
 	it("should delete a global mode and its rules folder", async () => {
 		const slug = "test-global-mode"
 		const homeDir = os.homedir()
-		const rulesFolderPath = `${homeDir}/.roo/rules-${slug}`
+		const rulesFolderPath = path.join(homeDir, ".roo", `rules-${slug}`)
 
 		vi.mocked(mockClineProvider.customModesManager.getCustomModes).mockResolvedValue([
 			{
@@ -445,7 +446,7 @@ describe("webviewMessageHandler - deleteCustomMode", () => {
 
 	it("should handle errors when deleting rules folder", async () => {
 		const slug = "test-mode-error"
-		const rulesFolderPath = `/mock/workspace/.roo/rules-${slug}`
+		const rulesFolderPath = path.join("/mock/workspace", ".roo", `rules-${slug}`)
 		const error = new Error("Permission denied")
 
 		vi.mocked(mockClineProvider.customModesManager.getCustomModes).mockResolvedValue([