feat: add support for symbolic links in .roo/commands directory

- Modified scanCommandDirectory to check for both regular files and symbolic links
- Added comprehensive test coverage for symbolic link functionality
- Ensures symbolic links to markdown files are properly loaded as commands

Fixes #7282

Author: roomote

src/services/command/__tests__/symlink-commands.spec.ts

@@ -0,0 +1,215 @@
+import { describe, it, expect, beforeEach, vi } from "vitest"
+import fs from "fs/promises"
+import * as path from "path"
+import { getCommands, getCommand } from "../commands"
+
+// Mock fs and path modules
+vi.mock("fs/promises")
+vi.mock("../../roo-config", () => ({
+	getGlobalRooDirectory: vi.fn(() => "/mock/global"),
+	getProjectRooDirectoryForCwd: vi.fn(() => "/mock/project"),
+}))
+
+const mockFs = vi.mocked(fs)
+
+describe("Symbolic link support for commands", () => {
+	beforeEach(() => {
+		vi.clearAllMocks()
+	})
+
+	describe("getCommands with symbolic links", () => {
+		it("should load commands from symbolic links", async () => {
+			const setupContent = `---
+description: Sets up the development environment
+---
+
+# Setup Command
+
+Setup instructions.`
+
+			const deployContent = `---
+description: Deploys the application
+---
+
+# Deploy Command
+
+Deploy instructions.`
+
+			mockFs.stat = vi.fn().mockResolvedValue({ isDirectory: () => true })
+			mockFs.readdir = vi.fn().mockResolvedValue([
+				{ name: "setup.md", isFile: () => false, isSymbolicLink: () => true }, // Symbolic link
+				{ name: "deploy.md", isFile: () => true, isSymbolicLink: () => false }, // Regular file
+				{ name: "build.md", isFile: () => false, isSymbolicLink: () => true }, // Another symbolic link
+			])
+			mockFs.readFile = vi
+				.fn()
+				.mockResolvedValueOnce(setupContent)
+				.mockResolvedValueOnce(deployContent)
+				.mockResolvedValueOnce("# Build Command\n\nBuild instructions.")
+
+			const result = await getCommands("/test/cwd")
+
+			expect(result).toHaveLength(3)
+			expect(result).toEqual(
+				expect.arrayContaining([
+					expect.objectContaining({
+						name: "setup",
+						description: "Sets up the development environment",
+					}),
+					expect.objectContaining({
+						name: "deploy",
+						description: "Deploys the application",
+					}),
+					expect.objectContaining({
+						name: "build",
+						description: undefined,
+					}),
+				]),
+			)
+		})
+
+		it("should handle mix of regular files and symbolic links", async () => {
+			const testContent = `---
+description: Test command
+argument-hint: test | debug
+---
+
+# Test Command
+
+Test content.`
+
+			const linkContent = `---
+description: Linked command
+---
+
+# Linked Command
+
+This command is accessed via symbolic link.`
+
+			mockFs.stat = vi.fn().mockResolvedValue({ isDirectory: () => true })
+			mockFs.readdir = vi.fn().mockResolvedValue([
+				{ name: "test.md", isFile: () => true, isSymbolicLink: () => false }, // Regular file
+				{ name: "linked.md", isFile: () => false, isSymbolicLink: () => true }, // Symbolic link
+				{ name: "not-markdown.txt", isFile: () => true, isSymbolicLink: () => false }, // Should be ignored
+				{ name: "symlink.txt", isFile: () => false, isSymbolicLink: () => true }, // Non-markdown symlink, should be ignored
+			])
+			mockFs.readFile = vi.fn().mockResolvedValueOnce(testContent).mockResolvedValueOnce(linkContent)
+
+			const result = await getCommands("/test/cwd")
+
+			expect(result).toHaveLength(2)
+			expect(result).toEqual(
+				expect.arrayContaining([
+					expect.objectContaining({
+						name: "test",
+						description: "Test command",
+						argumentHint: "test | debug",
+					}),
+					expect.objectContaining({
+						name: "linked",
+						description: "Linked command",
+					}),
+				]),
+			)
+		})
+
+		it("should handle broken symbolic links gracefully", async () => {
+			const validContent = `# Valid Command
+
+This is a valid command.`
+
+			mockFs.stat = vi.fn().mockResolvedValue({ isDirectory: () => true })
+			mockFs.readdir = vi.fn().mockResolvedValue([
+				{ name: "valid.md", isFile: () => true, isSymbolicLink: () => false }, // Regular file
+				{ name: "broken-link.md", isFile: () => false, isSymbolicLink: () => true }, // Broken symbolic link
+			])
+			mockFs.readFile = vi
+				.fn()
+				.mockResolvedValueOnce(validContent)
+				.mockRejectedValueOnce(new Error("ENOENT: no such file or directory")) // Broken link
+
+			const result = await getCommands("/test/cwd")
+
+			// Should only load the valid command, ignoring the broken link
+			expect(result).toHaveLength(1)
+			expect(result[0]).toEqual(
+				expect.objectContaining({
+					name: "valid",
+				}),
+			)
+		})
+
+		it("should prioritize project symbolic links over global commands", async () => {
+			const projectSymlinkContent = `---
+description: Project symbolic link command
+---
+
+# Project Symlink
+
+Project-specific command via symlink.`
+
+			const globalContent = `---
+description: Global command
+---
+
+# Global Command
+
+Global command content.`
+
+			// Mock both directories
+			mockFs.stat = vi.fn().mockResolvedValue({ isDirectory: () => true })
+
+			// First call for global directory scan, second for project directory scan
+			mockFs.readdir = vi
+				.fn()
+				.mockResolvedValueOnce([
+					{ name: "override.md", isFile: () => true, isSymbolicLink: () => false }, // Global regular file
+				])
+				.mockResolvedValueOnce([
+					{ name: "override.md", isFile: () => false, isSymbolicLink: () => true }, // Project symlink
+				])
+
+			// First read is for global file, second is for project symlink
+			mockFs.readFile = vi.fn().mockResolvedValueOnce(globalContent).mockResolvedValueOnce(projectSymlinkContent)
+
+			const result = await getCommands("/test/cwd")
+
+			// Project symbolic link should override global command
+			expect(result).toHaveLength(1)
+			expect(result[0]).toEqual(
+				expect.objectContaining({
+					name: "override",
+					description: "Project symbolic link command",
+					source: "project",
+				}),
+			)
+		})
+	})
+
+	describe("getCommand with symbolic links", () => {
+		it("should load a command from a symbolic link", async () => {
+			const commandContent = `---
+description: Command accessed via symbolic link
+argument-hint: option1 | option2
+---
+
+# Symlinked Command
+
+This command is loaded from a symbolic link.`
+
+			mockFs.stat = vi.fn().mockResolvedValue({ isDirectory: () => true })
+			mockFs.readFile = vi.fn().mockResolvedValue(commandContent)
+
+			const result = await getCommand("/test/cwd", "symlinked")
+
+			expect(result).toEqual({
+				name: "symlinked",
+				content: "# Symlinked Command\n\nThis command is loaded from a symbolic link.",
+				source: "project",
+				filePath: path.join("/mock/project", "commands", "symlinked.md"),
+				description: "Command accessed via symbolic link",
+				argumentHint: "option1 | option2",
+			})
+		})
+	})
+})

src/services/command/commands.ts

@@ -136,7 +136,8 @@ async function scanCommandDirectory(
 		const entries = await fs.readdir(dirPath, { withFileTypes: true })
 
 		for (const entry of entries) {
-			if (entry.isFile() && isMarkdownFile(entry.name)) {
+			// Check for both regular files and symbolic links
+			if ((entry.isFile() || entry.isSymbolicLink()) && isMarkdownFile(entry.name)) {
 				const filePath = path.join(dirPath, entry.name)
 				const commandName = getCommandNameFromFile(entry.name)