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/p-locate/index.d.ts

@@ -0,0 +1,64 @@
+declare namespace pLocate {
+	interface Options {
+		/**
+		Number of concurrently pending promises returned by `tester`. Minimum: `1`.
+
+		@default Infinity
+		*/
+		readonly concurrency?: number;
+
+		/**
+		Preserve `input` order when searching.
+
+		Disable this to improve performance if you don't care about the order.
+
+		@default true
+		*/
+		readonly preserveOrder?: boolean;
+	}
+}
+
+declare const pLocate: {
+	/**
+	Get the first fulfilled promise that satisfies the provided testing function.
+
+	@param input - An iterable of promises/values to test.
+	@param tester - This function will receive resolved values from `input` and is expected to return a `Promise<boolean>` or `boolean`.
+	@returns A `Promise` that is fulfilled when `tester` resolves to `true` or the iterable is done, or rejects if any of the promises reject. The fulfilled value is the current iterable value or `undefined` if `tester` never resolved to `true`.
+
+	@example
+	```
+	import pathExists = require('path-exists');
+	import pLocate = require('p-locate');
+
+	const files = [
+		'unicorn.png',
+		'rainbow.png', // Only this one actually exists on disk
+		'pony.png'
+	];
+
+	(async () => {
+		const foundPath = await pLocate(files, file => pathExists(file));
+
+		console.log(foundPath);
+		//=> 'rainbow'
+	})();
+	```
+	*/
+	<ValueType>(
+		input: Iterable<PromiseLike<ValueType> | ValueType>,
+		tester: (element: ValueType) => PromiseLike<boolean> | boolean,
+		options?: pLocate.Options
+	): Promise<ValueType | undefined>;
+
+	// TODO: Remove this for the next major release, refactor the whole definition to:
+	// declare function pLocate<ValueType>(
+	// 	input: Iterable<PromiseLike<ValueType> | ValueType>,
+	// 	tester: (element: ValueType) => PromiseLike<boolean> | boolean,
+	// 	options?: pLocate.Options
+	// ): Promise<ValueType | undefined>;
+	// export = pLocate;
+	default: typeof pLocate;
+};
+
+export = pLocate;

capabilities/testdrive-jsui/node_modules/p-locate/index.js

@@ -0,0 +1,52 @@
+'use strict';
+const pLimit = require('p-limit');
+
+class EndError extends Error {
+	constructor(value) {
+		super();
+		this.value = value;
+	}
+}
+
+// The input can also be a promise, so we await it
+const testElement = async (element, tester) => tester(await element);
+
+// The input can also be a promise, so we `Promise.all()` them both
+const finder = async element => {
+	const values = await Promise.all(element);
+	if (values[1] === true) {
+		throw new EndError(values[0]);
+	}
+
+	return false;
+};
+
+const pLocate = async (iterable, tester, options) => {
+	options = {
+		concurrency: Infinity,
+		preserveOrder: true,
+		...options
+	};
+
+	const limit = pLimit(options.concurrency);
+
+	// Start all the promises concurrently with optional limit
+	const items = [...iterable].map(element => [element, limit(testElement, element, tester)]);
+
+	// Check the promises either serially or concurrently
+	const checkLimit = pLimit(options.preserveOrder ? 1 : Infinity);
+
+	try {
+		await Promise.all(items.map(element => checkLimit(finder, element)));
+	} catch (error) {
+		if (error instanceof EndError) {
+			return error.value;
+		}
+
+		throw error;
+	}
+};
+
+module.exports = pLocate;
+// TODO: Remove this for the next major release
+module.exports.default = pLocate;

capabilities/testdrive-jsui/node_modules/p-locate/license

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (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/p-locate/node_modules/p-limit/index.d.ts

@@ -0,0 +1,38 @@
+export interface Limit {
+	/**
+	@param fn - Promise-returning/async function.
+	@param arguments - Any arguments to pass through to `fn`. Support for passing arguments on to the `fn` is provided in order to be able to avoid creating unnecessary closures. You probably don't need this optimization unless you're pushing a lot of functions.
+	@returns The promise returned by calling `fn(...arguments)`.
+	*/
+	<Arguments extends unknown[], ReturnType>(
+		fn: (...arguments: Arguments) => PromiseLike<ReturnType> | ReturnType,
+		...arguments: Arguments
+	): Promise<ReturnType>;
+
+	/**
+	The number of promises that are currently running.
+	*/
+	readonly activeCount: number;
+
+	/**
+	The number of promises that are waiting to run (i.e. their internal `fn` was not called yet).
+	*/
+	readonly pendingCount: number;
+
+	/**
+	Discard pending promises that are waiting to run.
+
+	This might be useful if you want to teardown the queue at the end of your program's lifecycle or discard any function calls referencing an intermediary state of your app.
+
+	Note: This does not cancel promises that are already running.
+	*/
+	clearQueue(): void;
+}
+
+/**
+Run multiple promise-returning & async functions with limited concurrency.
+
+@param concurrency - Concurrency limit. Minimum: `1`.
+@returns A `limit` function.
+*/
+export default function pLimit(concurrency: number): Limit;

capabilities/testdrive-jsui/node_modules/p-locate/node_modules/p-limit/index.js

@@ -0,0 +1,57 @@
+'use strict';
+const pTry = require('p-try');
+
+const pLimit = concurrency => {
+	if (!((Number.isInteger(concurrency) || concurrency === Infinity) && concurrency > 0)) {
+		return Promise.reject(new TypeError('Expected `concurrency` to be a number from 1 and up'));
+	}
+
+	const queue = [];
+	let activeCount = 0;
+
+	const next = () => {
+		activeCount--;
+
+		if (queue.length > 0) {
+			queue.shift()();
+		}
+	};
+
+	const run = (fn, resolve, ...args) => {
+		activeCount++;
+
+		const result = pTry(fn, ...args);
+
+		resolve(result);
+
+		result.then(next, next);
+	};
+
+	const enqueue = (fn, resolve, ...args) => {
+		if (activeCount < concurrency) {
+			run(fn, resolve, ...args);
+		} else {
+			queue.push(run.bind(null, fn, resolve, ...args));
+		}
+	};
+
+	const generator = (fn, ...args) => new Promise(resolve => enqueue(fn, resolve, ...args));
+	Object.defineProperties(generator, {
+		activeCount: {
+			get: () => activeCount
+		},
+		pendingCount: {
+			get: () => queue.length
+		},
+		clearQueue: {
+			value: () => {
+				queue.length = 0;
+			}
+		}
+	});
+
+	return generator;
+};
+
+module.exports = pLimit;
+module.exports.default = pLimit;

capabilities/testdrive-jsui/node_modules/p-locate/node_modules/p-limit/license

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (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/p-locate/node_modules/p-limit/package.json

@@ -0,0 +1,52 @@
+{
+	"name": "p-limit",
+	"version": "2.3.0",
+	"description": "Run multiple promise-returning & async functions with limited concurrency",
+	"license": "MIT",
+	"repository": "sindresorhus/p-limit",
+	"funding": "https://github.com/sponsors/sindresorhus",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=6"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd-check"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"promise",
+		"limit",
+		"limited",
+		"concurrency",
+		"throttle",
+		"throat",
+		"rate",
+		"batch",
+		"ratelimit",
+		"task",
+		"queue",
+		"async",
+		"await",
+		"promises",
+		"bluebird"
+	],
+	"dependencies": {
+		"p-try": "^2.0.0"
+	},
+	"devDependencies": {
+		"ava": "^1.2.1",
+		"delay": "^4.1.0",
+		"in-range": "^1.0.0",
+		"random-int": "^1.0.0",
+		"time-span": "^2.0.0",
+		"tsd-check": "^0.3.0",
+		"xo": "^0.24.0"
+	}
+}

capabilities/testdrive-jsui/node_modules/p-locate/node_modules/p-limit/readme.md

@@ -0,0 +1,101 @@
+# p-limit [![Build Status](https://travis-ci.org/sindresorhus/p-limit.svg?branch=master)](https://travis-ci.org/sindresorhus/p-limit)
+
+> Run multiple promise-returning & async functions with limited concurrency
+
+## Install
+
+```
+$ npm install p-limit
+```
+
+## Usage
+
+```js
+const pLimit = require('p-limit');
+
+const limit = pLimit(1);
+
+const input = [
+	limit(() => fetchSomething('foo')),
+	limit(() => fetchSomething('bar')),
+	limit(() => doSomething())
+];
+
+(async () => {
+	// Only one promise is run at once
+	const result = await Promise.all(input);
+	console.log(result);
+})();
+```
+
+## API
+
+### pLimit(concurrency)
+
+Returns a `limit` function.
+
+#### concurrency
+
+Type: `number`\
+Minimum: `1`\
+Default: `Infinity`
+
+Concurrency limit.
+
+### limit(fn, ...args)
+
+Returns the promise returned by calling `fn(...args)`.
+
+#### fn
+
+Type: `Function`
+
+Promise-returning/async function.
+
+#### args
+
+Any arguments to pass through to `fn`.
+
+Support for passing arguments on to the `fn` is provided in order to be able to avoid creating unnecessary closures. You probably don't need this optimization unless you're pushing a *lot* of functions.
+
+### limit.activeCount
+
+The number of promises that are currently running.
+
+### limit.pendingCount
+
+The number of promises that are waiting to run (i.e. their internal `fn` was not called yet).
+
+### limit.clearQueue()
+
+Discard pending promises that are waiting to run.
+
+This might be useful if you want to teardown the queue at the end of your program's lifecycle or discard any function calls referencing an intermediary state of your app.
+
+Note: This does not cancel promises that are already running.
+
+## FAQ
+
+### How is this different from the [`p-queue`](https://github.com/sindresorhus/p-queue) package?
+
+This package is only about limiting the number of concurrent executions, while `p-queue` is a fully featured queue implementation with lots of different options, introspection, and ability to pause the queue.
+
+## Related
+
+- [p-queue](https://github.com/sindresorhus/p-queue) - Promise queue with concurrency control
+- [p-throttle](https://github.com/sindresorhus/p-throttle) - Throttle promise-returning & async functions
+- [p-debounce](https://github.com/sindresorhus/p-debounce) - Debounce promise-returning & async functions
+- [p-all](https://github.com/sindresorhus/p-all) - Run promise-returning & async functions concurrently with optional limited concurrency
+- [More…](https://github.com/sindresorhus/promise-fun)
+
+---
+
+<div align="center">
+	<b>
+		<a href="https://tidelift.com/subscription/pkg/npm-p-limit?utm_source=npm-p-limit&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
+	</b>
+	<br>
+	<sub>
+		Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
+	</sub>
+</div>

capabilities/testdrive-jsui/node_modules/p-locate/package.json

@@ -0,0 +1,53 @@
+{
+	"name": "p-locate",
+	"version": "4.1.0",
+	"description": "Get the first fulfilled promise that satisfies the provided testing function",
+	"license": "MIT",
+	"repository": "sindresorhus/p-locate",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=8"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"promise",
+		"locate",
+		"find",
+		"finder",
+		"search",
+		"searcher",
+		"test",
+		"array",
+		"collection",
+		"iterable",
+		"iterator",
+		"race",
+		"fulfilled",
+		"fastest",
+		"async",
+		"await",
+		"promises",
+		"bluebird"
+	],
+	"dependencies": {
+		"p-limit": "^2.2.0"
+	},
+	"devDependencies": {
+		"ava": "^1.4.1",
+		"delay": "^4.1.0",
+		"in-range": "^1.0.0",
+		"time-span": "^3.0.0",
+		"tsd": "^0.7.2",
+		"xo": "^0.24.0"
+	}
+}

capabilities/testdrive-jsui/node_modules/p-locate/readme.md

@@ -0,0 +1,90 @@
+# p-locate [![Build Status](https://travis-ci.org/sindresorhus/p-locate.svg?branch=master)](https://travis-ci.org/sindresorhus/p-locate)
+
+> Get the first fulfilled promise that satisfies the provided testing function
+
+Think of it like an async version of [`Array#find`](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/find).
+
+
+## Install
+
+```
+$ npm install p-locate
+```
+
+
+## Usage
+
+Here we find the first file that exists on disk, in array order.
+
+```js
+const pathExists = require('path-exists');
+const pLocate = require('p-locate');
+
+const files = [
+	'unicorn.png',
+	'rainbow.png', // Only this one actually exists on disk
+	'pony.png'
+];
+
+(async () => {
+	const foundPath = await pLocate(files, file => pathExists(file));
+
+	console.log(foundPath);
+	//=> 'rainbow'
+})();
+```
+
+*The above is just an example. Use [`locate-path`](https://github.com/sindresorhus/locate-path) if you need this.*
+
+
+## API
+
+### pLocate(input, tester, [options])
+
+Returns a `Promise` that is fulfilled when `tester` resolves to `true` or the iterable is done, or rejects if any of the promises reject. The fulfilled value is the current iterable value or `undefined` if `tester` never resolved to `true`.
+
+#### input
+
+Type: `Iterable<Promise | unknown>`
+
+An iterable of promises/values to test.
+
+#### tester(element)
+
+Type: `Function`
+
+This function will receive resolved values from `input` and is expected to return a `Promise<boolean>` or `boolean`.
+
+#### options
+
+Type: `Object`
+
+##### concurrency
+
+Type: `number`<br>
+Default: `Infinity`<br>
+Minimum: `1`
+
+Number of concurrently pending promises returned by `tester`.
+
+##### preserveOrder
+
+Type: `boolean`<br>
+Default: `true`
+
+Preserve `input` order when searching.
+
+Disable this to improve performance if you don't care about the order.
+
+
+## Related
+
+- [p-map](https://github.com/sindresorhus/p-map) - Map over promises concurrently
+- [p-filter](https://github.com/sindresorhus/p-filter) - Filter promises concurrently
+- [p-any](https://github.com/sindresorhus/p-any) - Wait for any promise to be fulfilled
+- [More…](https://github.com/sindresorhus/promise-fun)
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)