feat: Add OpenCode rule profile with AGENTS.md and MCP config (#970)

* add opencode to profile lists

* add opencode profile / modify mcp config after add

* add changeset

* not necessary; main config being updated

* add issue link

* add/fix tests

* fix url and docsUrl

* update test for new urls

* fix formatting

* update/fix tests

tests/unit/profiles/opencode-integration.test.js

@@ -0,0 +1,123 @@
+import { jest } from '@jest/globals';
+import fs from 'fs';
+import path from 'path';
+import os from 'os';
+
+describe('OpenCode Profile Integration', () => {
+	let tempDir;
+
+	beforeEach(() => {
+		jest.clearAllMocks();
+
+		// Create a temporary directory for testing
+		tempDir = fs.mkdtempSync(path.join(os.tmpdir(), 'task-master-test-'));
+
+		// Spy on fs methods
+		jest.spyOn(fs, 'writeFileSync').mockImplementation(() => {});
+		jest.spyOn(fs, 'readFileSync').mockImplementation((filePath) => {
+			if (filePath.toString().includes('AGENTS.md')) {
+				return 'Sample AGENTS.md content for OpenCode integration';
+			}
+			if (filePath.toString().includes('opencode.json')) {
+				return JSON.stringify({ mcpServers: {} }, null, 2);
+			}
+			return '{}';
+		});
+		jest.spyOn(fs, 'existsSync').mockImplementation(() => false);
+		jest.spyOn(fs, 'mkdirSync').mockImplementation(() => {});
+	});
+
+	afterEach(() => {
+		// Clean up the temporary directory
+		try {
+			fs.rmSync(tempDir, { recursive: true, force: true });
+		} catch (err) {
+			console.error(`Error cleaning up: ${err.message}`);
+		}
+	});
+
+	// Test function that simulates the OpenCode profile file copying behavior
+	function mockCreateOpenCodeStructure() {
+		// OpenCode profile copies AGENTS.md to AGENTS.md in project root (same name)
+		const sourceContent = 'Sample AGENTS.md content for OpenCode integration';
+		fs.writeFileSync(path.join(tempDir, 'AGENTS.md'), sourceContent);
+
+		// OpenCode profile creates opencode.json config file
+		const configContent = JSON.stringify({ mcpServers: {} }, null, 2);
+		fs.writeFileSync(path.join(tempDir, 'opencode.json'), configContent);
+	}
+
+	test('creates AGENTS.md file in project root', () => {
+		// Act
+		mockCreateOpenCodeStructure();
+
+		// Assert
+		expect(fs.writeFileSync).toHaveBeenCalledWith(
+			path.join(tempDir, 'AGENTS.md'),
+			'Sample AGENTS.md content for OpenCode integration'
+		);
+	});
+
+	test('creates opencode.json config file in project root', () => {
+		// Act
+		mockCreateOpenCodeStructure();
+
+		// Assert
+		expect(fs.writeFileSync).toHaveBeenCalledWith(
+			path.join(tempDir, 'opencode.json'),
+			JSON.stringify({ mcpServers: {} }, null, 2)
+		);
+	});
+
+	test('does not create any profile directories', () => {
+		// Act
+		mockCreateOpenCodeStructure();
+
+		// Assert - OpenCode profile should not create any directories
+		// Only the temp directory creation calls should exist
+		const mkdirCalls = fs.mkdirSync.mock.calls.filter(
+			(call) => !call[0].includes('task-master-test-')
+		);
+		expect(mkdirCalls).toHaveLength(0);
+	});
+
+	test('handles transformation of MCP config format', () => {
+		// This test simulates the transformation behavior that would happen in onPostConvert
+		const standardMcpConfig = {
+			mcpServers: {
+				'taskmaster-ai': {
+					command: 'node',
+					args: ['path/to/server.js'],
+					env: {
+						API_KEY: 'test-key'
+					}
+				}
+			}
+		};
+
+		const expectedOpenCodeConfig = {
+			$schema: 'https://opencode.ai/config.json',
+			mcp: {
+				'taskmaster-ai': {
+					type: 'local',
+					command: ['node', 'path/to/server.js'],
+					enabled: true,
+					environment: {
+						API_KEY: 'test-key'
+					}
+				}
+			}
+		};
+
+		// Mock the transformation behavior
+		fs.writeFileSync(
+			path.join(tempDir, 'opencode.json'),
+			JSON.stringify(expectedOpenCodeConfig, null, 2)
+		);
+
+		expect(fs.writeFileSync).toHaveBeenCalledWith(
+			path.join(tempDir, 'opencode.json'),
+			JSON.stringify(expectedOpenCodeConfig, null, 2)
+		);
+	});
+});