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/camelcase/index.js

@@ -0,0 +1,76 @@
+'use strict';
+
+const preserveCamelCase = string => {
+	let isLastCharLower = false;
+	let isLastCharUpper = false;
+	let isLastLastCharUpper = false;
+
+	for (let i = 0; i < string.length; i++) {
+		const character = string[i];
+
+		if (isLastCharLower && /[a-zA-Z]/.test(character) && character.toUpperCase() === character) {
+			string = string.slice(0, i) + '-' + string.slice(i);
+			isLastCharLower = false;
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = true;
+			i++;
+		} else if (isLastCharUpper && isLastLastCharUpper && /[a-zA-Z]/.test(character) && character.toLowerCase() === character) {
+			string = string.slice(0, i - 1) + '-' + string.slice(i - 1);
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = false;
+			isLastCharLower = true;
+		} else {
+			isLastCharLower = character.toLowerCase() === character && character.toUpperCase() !== character;
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = character.toUpperCase() === character && character.toLowerCase() !== character;
+		}
+	}
+
+	return string;
+};
+
+const camelCase = (input, options) => {
+	if (!(typeof input === 'string' || Array.isArray(input))) {
+		throw new TypeError('Expected the input to be `string | string[]`');
+	}
+
+	options = Object.assign({
+		pascalCase: false
+	}, options);
+
+	const postProcess = x => options.pascalCase ? x.charAt(0).toUpperCase() + x.slice(1) : x;
+
+	if (Array.isArray(input)) {
+		input = input.map(x => x.trim())
+			.filter(x => x.length)
+			.join('-');
+	} else {
+		input = input.trim();
+	}
+
+	if (input.length === 0) {
+		return '';
+	}
+
+	if (input.length === 1) {
+		return options.pascalCase ? input.toUpperCase() : input.toLowerCase();
+	}
+
+	const hasUpperCase = input !== input.toLowerCase();
+
+	if (hasUpperCase) {
+		input = preserveCamelCase(input);
+	}
+
+	input = input
+		.replace(/^[_.\- ]+/, '')
+		.toLowerCase()
+		.replace(/[_.\- ]+(\w|$)/g, (_, p1) => p1.toUpperCase())
+		.replace(/\d+(\w|$)/g, m => m.toUpperCase());
+
+	return postProcess(input);
+};
+
+module.exports = camelCase;
+// TODO: Remove this for the next major release
+module.exports.default = camelCase;