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/fastq/bench.js

@@ -0,0 +1,66 @@
+'use strict'
+
+const max = 1000000
+const fastqueue = require('./')(worker, 1)
+const { promisify } = require('util')
+const immediate = promisify(setImmediate)
+const qPromise = require('./').promise(immediate, 1)
+const async = require('async')
+const neo = require('neo-async')
+const asyncqueue = async.queue(worker, 1)
+const neoqueue = neo.queue(worker, 1)
+
+function bench (func, done) {
+  const key = max + '*' + func.name
+  let count = -1
+
+  console.time(key)
+  end()
+
+  function end () {
+    if (++count < max) {
+      func(end)
+    } else {
+      console.timeEnd(key)
+      if (done) {
+        done()
+      }
+    }
+  }
+}
+
+function benchFastQ (done) {
+  fastqueue.push(42, done)
+}
+
+function benchAsyncQueue (done) {
+  asyncqueue.push(42, done)
+}
+
+function benchNeoQueue (done) {
+  neoqueue.push(42, done)
+}
+
+function worker (arg, cb) {
+  setImmediate(cb)
+}
+
+function benchSetImmediate (cb) {
+  worker(42, cb)
+}
+
+function benchFastQPromise (done) {
+  qPromise.push(42).then(function () { done() }, done)
+}
+
+function runBench (done) {
+  async.eachSeries([
+    benchSetImmediate,
+    benchFastQ,
+    benchNeoQueue,
+    benchAsyncQueue,
+    benchFastQPromise
+  ], bench, done)
+}
+
+runBench(runBench)