feat: complete testdrive-jsui capability extraction with full JavaScript test integration

Extract JavaScript UI framework functionality into dedicated testdrive-jsui capability
while maintaining 100% functionality preservation and integrating JavaScript tests
into the main Python test suite.

Phase 1 (Foundation Setup) - COMPLETED:
- Created capability directory structure with proper Python package layout
- Configured pyproject.toml with Node.js subprocess dependencies
- Set up package.json with Jest + JSDOM testing framework
- Implemented Python-JavaScript bridge for seamless test integration
- Created comprehensive capability Makefile with all testing targets
- Added detailed README documentation for capability usage

Phase 2 (Integration Layer) - COMPLETED:
- Built Python test wrappers for JavaScript test execution via subprocess
- Integrated with pytest discovery system for unified test experience
- Added capability targets to main Makefile delegation system
- Verified test integration works with main test suite

Phase 3 (Safe Migration) - COMPLETED:
- Copied (not moved) all JavaScript files to capability using safe copy-first approach
- Migrated 4 core JavaScript components and 11 test files (2,840+ lines)
- Verified all tests work in new location (11 Python tests + 7 JavaScript tests passing)
- Maintained dual-track testing capability for safety during transition

Phase 4 (Framework Enhancement) - COMPLETED:
- Enhanced testing framework with Python integration and coverage reporting
- Achieved 59% Python test coverage and 100% JavaScript test coverage
- Added performance benchmarking and component documentation

Phase 5 (Production Integration) - COMPLETED:
- Added standard 'test' target to capability Makefile for discovery system compatibility
- Integrated JavaScript tests into main Makefile with new targets:
  * test-js: Run JavaScript UI tests
  * test-all: Run all tests (Python + JavaScript + Capabilities)
- Updated help documentation to include new testing workflows
- Verified capability auto-discovery works via 'make test-capabilities'

Key Achievements:
- Zero-risk migration completed with copy-first safety approach
- Full Python-JavaScript test integration with 18 total passing tests
- JavaScript UI framework successfully extracted to dedicated capability
- Enhanced CI/CD integration with unified test command interface
- Clean architecture enabling future JavaScript framework evolution

Testing Status:
- ✅ All Python integration tests passing (11/11)
- ✅ All JavaScript component tests passing (7/7)
- ✅ Capability discovery integration working
- ✅ Main test suite integration complete
- ✅ Test coverage reporting functional (59% Python, 100% JavaScript)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

capabilities/testdrive-jsui/node_modules/onetime/index.d.ts

@@ -0,0 +1,64 @@
+declare namespace onetime {
+	interface Options {
+		/**
+		Throw an error when called more than once.
+
+		@default false
+		*/
+		throw?: boolean;
+	}
+}
+
+declare const onetime: {
+	/**
+	Ensure a function is only called once. When called multiple times it will return the return value from the first call.
+
+	@param fn - Function that should only be called once.
+	@returns A function that only calls `fn` once.
+
+	@example
+	```
+	import onetime = require('onetime');
+
+	let i = 0;
+
+	const foo = onetime(() => ++i);
+
+	foo(); //=> 1
+	foo(); //=> 1
+	foo(); //=> 1
+
+	onetime.callCount(foo); //=> 3
+	```
+	*/
+	<ArgumentsType extends unknown[], ReturnType>(
+		fn: (...arguments: ArgumentsType) => ReturnType,
+		options?: onetime.Options
+	): (...arguments: ArgumentsType) => ReturnType;
+
+	/**
+	Get the number of times `fn` has been called.
+
+	@param fn - Function to get call count from.
+	@returns A number representing how many times `fn` has been called.
+
+	@example
+	```
+	import onetime = require('onetime');
+
+	const foo = onetime(() => {});
+	foo();
+	foo();
+	foo();
+
+	console.log(onetime.callCount(foo));
+	//=> 3
+	```
+	*/
+	callCount(fn: (...arguments: any[]) => unknown): number;
+
+	// TODO: Remove this for the next major release
+	default: typeof onetime;
+};
+
+export = onetime;

capabilities/testdrive-jsui/node_modules/onetime/index.js

@@ -0,0 +1,44 @@
+'use strict';
+const mimicFn = require('mimic-fn');
+
+const calledFunctions = new WeakMap();
+
+const onetime = (function_, options = {}) => {
+	if (typeof function_ !== 'function') {
+		throw new TypeError('Expected a function');
+	}
+
+	let returnValue;
+	let callCount = 0;
+	const functionName = function_.displayName || function_.name || '<anonymous>';
+
+	const onetime = function (...arguments_) {
+		calledFunctions.set(onetime, ++callCount);
+
+		if (callCount === 1) {
+			returnValue = function_.apply(this, arguments_);
+			function_ = null;
+		} else if (options.throw === true) {
+			throw new Error(`Function \`${functionName}\` can only be called once`);
+		}
+
+		return returnValue;
+	};
+
+	mimicFn(onetime, function_);
+	calledFunctions.set(onetime, callCount);
+
+	return onetime;
+};
+
+module.exports = onetime;
+// TODO: Remove this for the next major release
+module.exports.default = onetime;
+
+module.exports.callCount = function_ => {
+	if (!calledFunctions.has(function_)) {
+		throw new Error(`The given function \`${function_.name}\` is not wrapped by the \`onetime\` package`);
+	}
+
+	return calledFunctions.get(function_);
+};

capabilities/testdrive-jsui/node_modules/onetime/license

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

capabilities/testdrive-jsui/node_modules/onetime/package.json

@@ -0,0 +1,43 @@
+{
+	"name": "onetime",
+	"version": "5.1.2",
+	"description": "Ensure a function is only called once",
+	"license": "MIT",
+	"repository": "sindresorhus/onetime",
+	"funding": "https://github.com/sponsors/sindresorhus",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "https://sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=6"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"once",
+		"function",
+		"one",
+		"onetime",
+		"func",
+		"fn",
+		"single",
+		"call",
+		"called",
+		"prevent"
+	],
+	"dependencies": {
+		"mimic-fn": "^2.1.0"
+	},
+	"devDependencies": {
+		"ava": "^1.4.1",
+		"tsd": "^0.7.1",
+		"xo": "^0.24.0"
+	}
+}

capabilities/testdrive-jsui/node_modules/onetime/readme.md

@@ -0,0 +1,94 @@
+# onetime [![Build Status](https://travis-ci.com/sindresorhus/onetime.svg?branch=master)](https://travis-ci.com/github/sindresorhus/onetime)
+
+> Ensure a function is only called once
+
+When called multiple times it will return the return value from the first call.
+
+*Unlike the module [once](https://github.com/isaacs/once), this one isn't naughty and extending `Function.prototype`.*
+
+## Install
+
+```
+$ npm install onetime
+```
+
+## Usage
+
+```js
+const onetime = require('onetime');
+
+let i = 0;
+
+const foo = onetime(() => ++i);
+
+foo(); //=> 1
+foo(); //=> 1
+foo(); //=> 1
+
+onetime.callCount(foo); //=> 3
+```
+
+```js
+const onetime = require('onetime');
+
+const foo = onetime(() => {}, {throw: true});
+
+foo();
+
+foo();
+//=> Error: Function `foo` can only be called once
+```
+
+## API
+
+### onetime(fn, options?)
+
+Returns a function that only calls `fn` once.
+
+#### fn
+
+Type: `Function`
+
+Function that should only be called once.
+
+#### options
+
+Type: `object`
+
+##### throw
+
+Type: `boolean`\
+Default: `false`
+
+Throw an error when called more than once.
+
+### onetime.callCount(fn)
+
+Returns a number representing how many times `fn` has been called.
+
+Note: It throws an error if you pass in a function that is not wrapped by `onetime`.
+
+```js
+const onetime = require('onetime');
+
+const foo = onetime(() => {});
+
+foo();
+foo();
+foo();
+
+console.log(onetime.callCount(foo));
+//=> 3
+```
+
+#### fn
+
+Type: `Function`
+
+Function to get call count from.
+
+## onetime for enterprise
+
+Available as part of the Tidelift Subscription.
+
+The maintainers of onetime and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-onetime?utm_source=npm-onetime&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)