feat: add multi-root workspace support

- Updated getWorkspacePath to properly handle multi-root workspaces
- Added getAllWorkspacePaths and getWorkspaceFolderForPath utility functions
- Fixed isPathOutsideWorkspace to correctly check all workspace folders
- Updated Task class to support multiple workspace roots
- Modified environment details to show files from all workspace folders
- Added comprehensive tests for multi-root workspace scenarios

Fixes #8041

src/core/environment/getEnvironmentDetails.ts

@@ -238,32 +238,69 @@ export async function getEnvironmentDetails(cline: Task, includeFileDetails: boo
 	}
 
 	if (includeFileDetails) {
-		details += `\n\n# Current Workspace Directory (${cline.cwd.toPosix()}) Files\n`
-		const isDesktop = arePathsEqual(cline.cwd, path.join(os.homedir(), "Desktop"))
+		// Check if we have multiple workspace folders
+		const workspaceFolders = vscode.workspace.workspaceFolders
+		const isMultiRoot = workspaceFolders && workspaceFolders.length > 1
 
-		if (isDesktop) {
-			// Don't want to immediately access desktop since it would show
-			// permission popup.
-			details += "(Desktop files not shown automatically. Use list_files to explore if needed.)"
+		if (isMultiRoot) {
+			// For multi-root workspaces, show files from all workspace folders
+			details += `\n\n# Multi-Root Workspace Files\n`
+			const maxFilesPerFolder = Math.floor((maxWorkspaceFiles ?? 200) / workspaceFolders.length)
+
+			for (const folder of workspaceFolders) {
+				const folderPath = folder.uri.fsPath
+				const folderName = folder.name
+				details += `\n## ${folderName} (${folderPath.toPosix()})\n`
+
+				const isDesktop = arePathsEqual(folderPath, path.join(os.homedir(), "Desktop"))
+				if (isDesktop) {
+					details += "(Desktop files not shown automatically. Use list_files to explore if needed.)\n"
+				} else if (maxFilesPerFolder === 0) {
+					details += "(Workspace files context disabled. Use list_files to explore if needed.)\n"
+				} else {
+					const [files, didHitLimit] = await listFiles(folderPath, true, maxFilesPerFolder)
+					const { showRooIgnoredFiles = false } = state ?? {}
+
+					const result = formatResponse.formatFilesList(
+						folderPath,
+						files,
+						didHitLimit,
+						cline.rooIgnoreController,
+						showRooIgnoredFiles,
+					)
+
+					details += result + "\n"
+				}
+			}
 		} else {
-			const maxFiles = maxWorkspaceFiles ?? 200
+			// Single workspace folder - use existing logic
+			details += `\n\n# Current Workspace Directory (${cline.cwd.toPosix()}) Files\n`
+			const isDesktop = arePathsEqual(cline.cwd, path.join(os.homedir(), "Desktop"))
 
-			// Early return for limit of 0
-			if (maxFiles === 0) {
-				details += "(Workspace files context disabled. Use list_files to explore if needed.)"
+			if (isDesktop) {
+				// Don't want to immediately access desktop since it would show
+				// permission popup.
+				details += "(Desktop files not shown automatically. Use list_files to explore if needed.)"
 			} else {
-				const [files, didHitLimit] = await listFiles(cline.cwd, true, maxFiles)
-				const { showRooIgnoredFiles = false } = state ?? {}
+				const maxFiles = maxWorkspaceFiles ?? 200
 
-				const result = formatResponse.formatFilesList(
-					cline.cwd,
-					files,
-					didHitLimit,
-					cline.rooIgnoreController,
-					showRooIgnoredFiles,
-				)
+				// Early return for limit of 0
+				if (maxFiles === 0) {
+					details += "(Workspace files context disabled. Use list_files to explore if needed.)"
+				} else {
+					const [files, didHitLimit] = await listFiles(cline.cwd, true, maxFiles)
+					const { showRooIgnoredFiles = false } = state ?? {}
 
-				details += result
+					const result = formatResponse.formatFilesList(
+						cline.cwd,
+						files,
+						didHitLimit,
+						cline.rooIgnoreController,
+						showRooIgnoredFiles,
+					)
+
+					details += result
+				}
 			}
 		}
 	}

src/core/task/Task.ts

@@ -2909,6 +2909,33 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 		return this.workspacePath
 	}
 
+	/**
+	 * Get all workspace folders for multi-root workspace support
+	 * @returns Array of all workspace folder paths
+	 */
+	public get workspaceFolders(): string[] {
+		const folders = vscode.workspace.workspaceFolders
+		if (!folders || folders.length === 0) {
+			return [this.workspacePath]
+		}
+		return folders.map((folder) => folder.uri.fsPath)
+	}
+
+	/**
+	 * Check if a path is within any of the workspace folders
+	 * @param filePath The file path to check
+	 * @returns true if the path is in a workspace folder, false otherwise
+	 */
+	public isPathInWorkspace(filePath: string): boolean {
+		const absolutePath = path.resolve(filePath)
+		const normalizedPath = path.normalize(absolutePath)
+
+		return this.workspaceFolders.some((folderPath) => {
+			const normalizedFolderPath = path.normalize(folderPath)
+			return normalizedPath === normalizedFolderPath || normalizedPath.startsWith(normalizedFolderPath + path.sep)
+		})
+	}
+
 	/**
 	 * Process any queued messages by dequeuing and submitting them.
 	 * This ensures that queued user messages are sent when appropriate,

src/utils/__tests__/path.spec.ts

@@ -3,37 +3,62 @@
 import os from "os"
 import * as path from "path"
 
-import { arePathsEqual, getReadablePath, getWorkspacePath } from "../path"
+import {
+	arePathsEqual,
+	getReadablePath,
+	getWorkspacePath,
+	getAllWorkspacePaths,
+	getWorkspaceFolderForPath,
+} from "../path"
 
 // Mock modules
+const mockWorkspaceFolders = vi.fn()
+const mockGetWorkspaceFolder = vi.fn()
+const mockActiveTextEditor = vi.fn()
 
 vi.mock("vscode", () => ({
 	window: {
-		activeTextEditor: {
-			document: {
-				uri: { fsPath: "/test/workspaceFolder/file.ts" },
-			},
+		get activeTextEditor() {
+			return mockActiveTextEditor()
 		},
 	},
 	workspace: {
-		workspaceFolders: [
-			{
-				uri: { fsPath: "/test/workspace" },
-				name: "test",
-				index: 0,
-			},
-		],
-		getWorkspaceFolder: vi.fn().mockReturnValue({
-			uri: {
-				fsPath: "/test/workspaceFolder",
-			},
-		}),
+		get workspaceFolders() {
+			return mockWorkspaceFolders()
+		},
+		getWorkspaceFolder: mockGetWorkspaceFolder,
 	},
 }))
 describe("Path Utilities", () => {
 	const originalPlatform = process.platform
 	// Helper to mock VS Code configuration
 
+	beforeEach(() => {
+		// Reset mocks before each test
+		vi.clearAllMocks()
+
+		// Set default mock values
+		mockWorkspaceFolders.mockReturnValue([
+			{
+				uri: { fsPath: "/test/workspace" },
+				name: "test",
+				index: 0,
+			},
+		])
+
+		mockActiveTextEditor.mockReturnValue({
+			document: {
+				uri: { fsPath: "/test/workspaceFolder/file.ts" },
+			},
+		})
+
+		mockGetWorkspaceFolder.mockReturnValue({
+			uri: {
+				fsPath: "/test/workspaceFolder",
+			},
+		})
+	})
+
 	afterEach(() => {
 		Object.defineProperty(process, "platform", {
 			value: originalPlatform,
@@ -56,14 +81,129 @@ describe("Path Utilities", () => {
 			expect(extendedPath.toPosix()).toBe("\\\\?\\C:\\Very\\Long\\Path")
 		})
 	})
+
 	describe("getWorkspacePath", () => {
-		it("should return the current workspace path", () => {
-			const workspacePath = "/Users/test/project"
-			expect(getWorkspacePath(workspacePath)).toBe("/Users/test/project")
+		it("should return the workspace folder of the active editor", () => {
+			mockActiveTextEditor.mockReturnValue({
+				document: {
+					uri: { fsPath: "/test/workspaceFolder/file.ts" },
+				},
+			})
+			mockGetWorkspaceFolder.mockReturnValue({
+				uri: { fsPath: "/test/workspaceFolder" },
+			})
+			mockWorkspaceFolders.mockReturnValue([{ uri: { fsPath: "/test/workspace" }, name: "workspace", index: 0 }])
+
+			expect(getWorkspacePath()).toBe("/test/workspaceFolder")
 		})
 
-		it("should return undefined when outside a workspace", () => {})
+		it("should return the first workspace folder when no active editor", () => {
+			mockActiveTextEditor.mockReturnValue(undefined)
+			mockGetWorkspaceFolder.mockReturnValue(undefined)
+			mockWorkspaceFolders.mockReturnValue([
+				{ uri: { fsPath: "/test/workspace1" }, name: "workspace1", index: 0 },
+				{ uri: { fsPath: "/test/workspace2" }, name: "workspace2", index: 1 },
+			])
+
+			expect(getWorkspacePath()).toBe("/test/workspace1")
+		})
+
+		it("should return default path when no workspace folders", () => {
+			mockActiveTextEditor.mockReturnValue(undefined)
+			mockGetWorkspaceFolder.mockReturnValue(undefined)
+			mockWorkspaceFolders.mockReturnValue(undefined)
+
+			expect(getWorkspacePath("/default/path")).toBe("/default/path")
+		})
+
+		it("should handle multi-root workspaces correctly", () => {
+			mockWorkspaceFolders.mockReturnValue([
+				{ uri: { fsPath: "/test/frontend" }, name: "frontend", index: 0 },
+				{ uri: { fsPath: "/test/backend" }, name: "backend", index: 1 },
+			])
+
+			// When active editor is in backend folder
+			mockActiveTextEditor.mockReturnValue({
+				document: { uri: { fsPath: "/test/backend/src/app.ts" } },
+			})
+			mockGetWorkspaceFolder.mockReturnValue({
+				uri: { fsPath: "/test/backend" },
+			})
+
+			expect(getWorkspacePath()).toBe("/test/backend")
+		})
 	})
+
+	describe("getAllWorkspacePaths", () => {
+		it("should return all workspace folder paths", () => {
+			mockWorkspaceFolders.mockReturnValue([
+				{ uri: { fsPath: "/test/frontend" }, name: "frontend", index: 0 },
+				{ uri: { fsPath: "/test/backend" }, name: "backend", index: 1 },
+			])
+
+			const paths = getAllWorkspacePaths()
+			expect(paths).toEqual(["/test/frontend", "/test/backend"])
+		})
+
+		it("should return empty array when no workspace folders", () => {
+			mockWorkspaceFolders.mockReturnValue(undefined)
+
+			const paths = getAllWorkspacePaths()
+			expect(paths).toEqual([])
+		})
+
+		it("should handle single workspace folder", () => {
+			mockWorkspaceFolders.mockReturnValue([{ uri: { fsPath: "/test/workspace" }, name: "workspace", index: 0 }])
+
+			const paths = getAllWorkspacePaths()
+			expect(paths).toEqual(["/test/workspace"])
+		})
+	})
+
+	describe("getWorkspaceFolderForPath", () => {
+		beforeEach(() => {
+			mockWorkspaceFolders.mockReturnValue([
+				{ uri: { fsPath: "/test/frontend" }, name: "frontend", index: 0 },
+				{ uri: { fsPath: "/test/backend" }, name: "backend", index: 1 },
+			])
+		})
+
+		it("should return the workspace folder containing the path", () => {
+			expect(getWorkspaceFolderForPath("/test/frontend/src/app.ts")).toBe("/test/frontend")
+			expect(getWorkspaceFolderForPath("/test/backend/src/server.ts")).toBe("/test/backend")
+		})
+
+		it("should return the workspace folder for exact match", () => {
+			expect(getWorkspaceFolderForPath("/test/frontend")).toBe("/test/frontend")
+			expect(getWorkspaceFolderForPath("/test/backend")).toBe("/test/backend")
+		})
+
+		it("should return null for paths outside any workspace", () => {
+			expect(getWorkspaceFolderForPath("/other/path/file.ts")).toBeNull()
+			expect(getWorkspaceFolderForPath("/test/other/file.ts")).toBeNull()
+		})
+
+		it("should return null when no workspace folders", () => {
+			mockWorkspaceFolders.mockReturnValue(undefined)
+			expect(getWorkspaceFolderForPath("/test/frontend/src/app.ts")).toBeNull()
+		})
+
+		it("should handle relative paths by resolving them", () => {
+			// This depends on the current working directory, so we'll use path.resolve
+			const resolvedPath = path.resolve("./src/app.ts")
+			const result = getWorkspaceFolderForPath("./src/app.ts")
+
+			// The result should be based on the resolved path
+			if (resolvedPath.startsWith("/test/frontend")) {
+				expect(result).toBe("/test/frontend")
+			} else if (resolvedPath.startsWith("/test/backend")) {
+				expect(result).toBe("/test/backend")
+			} else {
+				expect(result).toBeNull()
+			}
+		})
+	})
+
 	describe("arePathsEqual", () => {
 		describe("on Windows", () => {
 			beforeEach(() => {

src/utils/__tests__/pathUtils.spec.ts

@@ -0,0 +1,233 @@
+// npx vitest utils/__tests__/pathUtils.spec.ts
+
+import * as path from "path"
+import { isPathOutsideWorkspace, getContainingWorkspaceFolder } from "../pathUtils"
+
+// Mock vscode module
+const mockWorkspaceFolders = vi.fn()
+
+vi.mock("vscode", () => ({
+	workspace: {
+		get workspaceFolders() {
+			return mockWorkspaceFolders()
+		},
+	},
+	WorkspaceFolder: class {
+		constructor(
+			public uri: { fsPath: string },
+			public name: string,
+			public index: number,
+		) {}
+	},
+}))
+
+describe("pathUtils", () => {
+	beforeEach(() => {
+		vi.clearAllMocks()
+	})
+
+	describe("isPathOutsideWorkspace", () => {
+		describe("single workspace folder", () => {
+			beforeEach(() => {
+				mockWorkspaceFolders.mockReturnValue([
+					{
+						uri: { fsPath: "/test/workspace" },
+						name: "workspace",
+						index: 0,
+					},
+				])
+			})
+
+			it("should return false for paths inside the workspace", () => {
+				expect(isPathOutsideWorkspace("/test/workspace")).toBe(false)
+				expect(isPathOutsideWorkspace("/test/workspace/src/file.ts")).toBe(false)
+				expect(isPathOutsideWorkspace("/test/workspace/nested/deep/file.ts")).toBe(false)
+			})
+
+			it("should return true for paths outside the workspace", () => {
+				expect(isPathOutsideWorkspace("/test/other")).toBe(true)
+				expect(isPathOutsideWorkspace("/other/path/file.ts")).toBe(true)
+				expect(isPathOutsideWorkspace("/test")).toBe(true) // Parent directory
+			})
+
+			it("should handle relative paths by resolving them", () => {
+				const originalCwd = process.cwd()
+
+				// Mock process.cwd to be inside workspace
+				const cwdSpy = vi.spyOn(process, "cwd").mockReturnValue("/test/workspace/src")
+
+				expect(isPathOutsideWorkspace("./file.ts")).toBe(false) // Resolves to /test/workspace/src/file.ts
+				expect(isPathOutsideWorkspace("../file.ts")).toBe(false) // Resolves to /test/workspace/file.ts
+				expect(isPathOutsideWorkspace("../../other/file.ts")).toBe(true) // Resolves to /test/other/file.ts
+
+				cwdSpy.mockRestore()
+			})
+		})
+
+		describe("multi-root workspace", () => {
+			beforeEach(() => {
+				mockWorkspaceFolders.mockReturnValue([
+					{
+						uri: { fsPath: "/test/frontend" },
+						name: "frontend",
+						index: 0,
+					},
+					{
+						uri: { fsPath: "/test/backend" },
+						name: "backend",
+						index: 1,
+					},
+				])
+			})
+
+			it("should return false for paths in any workspace folder", () => {
+				// Frontend paths
+				expect(isPathOutsideWorkspace("/test/frontend")).toBe(false)
+				expect(isPathOutsideWorkspace("/test/frontend/src/app.ts")).toBe(false)
+
+				// Backend paths
+				expect(isPathOutsideWorkspace("/test/backend")).toBe(false)
+				expect(isPathOutsideWorkspace("/test/backend/src/server.ts")).toBe(false)
+			})
+
+			it("should return true for paths outside all workspace folders", () => {
+				expect(isPathOutsideWorkspace("/test/other")).toBe(true)
+				expect(isPathOutsideWorkspace("/other/path")).toBe(true)
+				expect(isPathOutsideWorkspace("/test")).toBe(true) // Parent of both workspaces
+			})
+
+			it("should handle paths between workspace folders correctly", () => {
+				// This is the key test for the bug fix
+				// Paths in sibling workspace folders should NOT be considered outside
+				expect(isPathOutsideWorkspace("/test/frontend/src/app.ts")).toBe(false)
+				expect(isPathOutsideWorkspace("/test/backend/src/server.ts")).toBe(false)
+
+				// But paths that are truly outside should still be blocked
+				expect(isPathOutsideWorkspace("/test/shared/lib.ts")).toBe(true)
+			})
+		})
+
+		describe("no workspace folders", () => {
+			beforeEach(() => {
+				mockWorkspaceFolders.mockReturnValue(undefined)
+			})
+
+			it("should return true for all paths when no workspace", () => {
+				expect(isPathOutsideWorkspace("/any/path")).toBe(true)
+				expect(isPathOutsideWorkspace("./relative/path")).toBe(true)
+				expect(isPathOutsideWorkspace("/test/workspace/file.ts")).toBe(true)
+			})
+		})
+
+		describe("empty workspace folders array", () => {
+			beforeEach(() => {
+				mockWorkspaceFolders.mockReturnValue([])
+			})
+
+			it("should return true for all paths when workspace array is empty", () => {
+				expect(isPathOutsideWorkspace("/any/path")).toBe(true)
+				expect(isPathOutsideWorkspace("./relative/path")).toBe(true)
+			})
+		})
+
+		describe("path normalization", () => {
+			beforeEach(() => {
+				mockWorkspaceFolders.mockReturnValue([
+					{
+						uri: { fsPath: "/test/workspace" },
+						name: "workspace",
+						index: 0,
+					},
+				])
+			})
+
+			it("should normalize paths with .. and .", () => {
+				expect(isPathOutsideWorkspace("/test/workspace/../workspace/src/file.ts")).toBe(false)
+				expect(isPathOutsideWorkspace("/test/workspace/./src/file.ts")).toBe(false)
+				expect(isPathOutsideWorkspace("/test/workspace/src/../src/file.ts")).toBe(false)
+			})
+
+			it("should handle trailing slashes", () => {
+				expect(isPathOutsideWorkspace("/test/workspace/")).toBe(false)
+				expect(isPathOutsideWorkspace("/test/workspace/src/")).toBe(false)
+			})
+		})
+	})
+
+	describe("getContainingWorkspaceFolder", () => {
+		describe("single workspace folder", () => {
+			const workspaceFolder = {
+				uri: { fsPath: "/test/workspace" },
+				name: "workspace",
+				index: 0,
+			}
+
+			beforeEach(() => {
+				mockWorkspaceFolders.mockReturnValue([workspaceFolder])
+			})
+
+			it("should return the workspace folder for paths inside it", () => {
+				expect(getContainingWorkspaceFolder("/test/workspace")).toEqual(workspaceFolder)
+				expect(getContainingWorkspaceFolder("/test/workspace/src/file.ts")).toEqual(workspaceFolder)
+			})
+
+			it("should return undefined for paths outside the workspace", () => {
+				expect(getContainingWorkspaceFolder("/test/other")).toBeUndefined()
+				expect(getContainingWorkspaceFolder("/other/path")).toBeUndefined()
+			})
+		})
+
+		describe("multi-root workspace", () => {
+			const frontendFolder = {
+				uri: { fsPath: "/test/frontend" },
+				name: "frontend",
+				index: 0,
+			}
+
+			const backendFolder = {
+				uri: { fsPath: "/test/backend" },
+				name: "backend",
+				index: 1,
+			}
+
+			beforeEach(() => {
+				mockWorkspaceFolders.mockReturnValue([frontendFolder, backendFolder])
+			})
+
+			it("should return the correct workspace folder for each path", () => {
+				expect(getContainingWorkspaceFolder("/test/frontend/src/app.ts")).toEqual(frontendFolder)
+				expect(getContainingWorkspaceFolder("/test/backend/src/server.ts")).toEqual(backendFolder)
+			})
+
+			it("should return the exact workspace folder for root paths", () => {
+				expect(getContainingWorkspaceFolder("/test/frontend")).toEqual(frontendFolder)
+				expect(getContainingWorkspaceFolder("/test/backend")).toEqual(backendFolder)
+			})
+
+			it("should return undefined for paths outside all workspaces", () => {
+				expect(getContainingWorkspaceFolder("/test/other")).toBeUndefined()
+				expect(getContainingWorkspaceFolder("/test")).toBeUndefined()
+			})
+		})
+
+		describe("no workspace folders", () => {
+			beforeEach(() => {
+				mockWorkspaceFolders.mockReturnValue(undefined)
+			})
+
+			it("should return undefined when no workspace folders", () => {
+				expect(getContainingWorkspaceFolder("/any/path")).toBeUndefined()
+			})
+		})
+
+		describe("empty workspace folders array", () => {
+			beforeEach(() => {
+				mockWorkspaceFolders.mockReturnValue([])
+			})
+
+			it("should return undefined when workspace array is empty", () => {
+				expect(getContainingWorkspaceFolder("/any/path")).toBeUndefined()
+			})
+		})
+	})
+})

src/utils/path.ts

@@ -107,13 +107,61 @@ export const toRelativePath = (filePath: string, cwd: string) => {
 }
 
 export const getWorkspacePath = (defaultCwdPath = "") => {
-	const cwdPath = vscode.workspace.workspaceFolders?.map((folder) => folder.uri.fsPath).at(0) || defaultCwdPath
+	// For multi-root workspaces, we should consider all workspace folders
+	const workspaceFolders = vscode.workspace.workspaceFolders
+
+	// If no workspace folders, return the default
+	if (!workspaceFolders || workspaceFolders.length === 0) {
+		return defaultCwdPath
+	}
+
+	// If there's an active editor, use its workspace folder
 	const currentFileUri = vscode.window.activeTextEditor?.document.uri
 	if (currentFileUri) {
 		const workspaceFolder = vscode.workspace.getWorkspaceFolder(currentFileUri)
-		return workspaceFolder?.uri.fsPath || cwdPath
+		if (workspaceFolder) {
+			return workspaceFolder.uri.fsPath
+		}
 	}
-	return cwdPath
+
+	// For multi-root workspaces, we'll return the first folder as the default
+	// but the system should be aware of all folders
+	return workspaceFolders[0].uri.fsPath
+}
+
+/**
+ * Get all workspace paths in a multi-root workspace
+ * @returns Array of all workspace folder paths
+ */
+export const getAllWorkspacePaths = (): string[] => {
+	const workspaceFolders = vscode.workspace.workspaceFolders
+	if (!workspaceFolders || workspaceFolders.length === 0) {
+		return []
+	}
+	return workspaceFolders.map((folder) => folder.uri.fsPath)
+}
+
+/**
+ * Check if a path belongs to any workspace folder
+ * @param filePath The file path to check
+ * @returns The workspace folder path if the file belongs to a workspace, null otherwise
+ */
+export const getWorkspaceFolderForPath = (filePath: string): string | null => {
+	const workspaceFolders = vscode.workspace.workspaceFolders
+	if (!workspaceFolders || workspaceFolders.length === 0) {
+		return null
+	}
+
+	const normalizedFilePath = path.normalize(filePath)
+
+	for (const folder of workspaceFolders) {
+		const folderPath = path.normalize(folder.uri.fsPath)
+		if (normalizedFilePath === folderPath || normalizedFilePath.startsWith(folderPath + path.sep)) {
+			return folder.uri.fsPath
+		}
+	}
+
+	return null
 }
 
 export const getWorkspacePathForContext = (contextPath?: string): string => {

src/utils/pathUtils.ts

@@ -14,11 +14,39 @@ export function isPathOutsideWorkspace(filePath: string): boolean {
 
 	// Normalize and resolve the path to handle .. and . components correctly
 	const absolutePath = path.resolve(filePath)
+	const normalizedPath = path.normalize(absolutePath)
 
 	// Check if the path is within any workspace folder
-	return !vscode.workspace.workspaceFolders.some((folder) => {
-		const folderPath = folder.uri.fsPath
+	// This properly supports multi-root workspaces by checking against ALL folders
+	for (const folder of vscode.workspace.workspaceFolders) {
+		const folderPath = path.normalize(folder.uri.fsPath)
+
 		// Path is inside a workspace if it equals the workspace path or is a subfolder
-		return absolutePath === folderPath || absolutePath.startsWith(folderPath + path.sep)
+		if (normalizedPath === folderPath || normalizedPath.startsWith(folderPath + path.sep)) {
+			return false // Path is inside this workspace folder
+		}
+	}
+
+	// Path is not in any workspace folder
+	return true
+}
+
+/**
+ * Get the workspace folder that contains the given path
+ * @param filePath The file path to check
+ * @returns The workspace folder URI if found, undefined otherwise
+ */
+export function getContainingWorkspaceFolder(filePath: string): vscode.WorkspaceFolder | undefined {
+	if (!vscode.workspace.workspaceFolders || vscode.workspace.workspaceFolders.length === 0) {
+		return undefined
+	}
+
+	const absolutePath = path.resolve(filePath)
+	const normalizedPath = path.normalize(absolutePath)
+
+	// Find the workspace folder that contains this path
+	return vscode.workspace.workspaceFolders.find((folder) => {
+		const folderPath = path.normalize(folder.uri.fsPath)
+		return normalizedPath === folderPath || normalizedPath.startsWith(folderPath + path.sep)
 	})
 }