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/resolve/test/resolver/multirepo/lerna.json

@@ -0,0 +1,6 @@
+{
+  "packages": [
+    "packages/*"
+  ],
+  "version": "0.0.0"
+}

capabilities/testdrive-jsui/node_modules/resolve/test/resolver/multirepo/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "ljharb-monorepo-symlink-test",
+  "private": true,
+  "version": "0.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "postinstall": "lerna bootstrap",
+    "test": "node packages/package-a"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "jquery": "^3.3.1",
+    "resolve": "../../../"
+  },
+  "devDependencies": {
+    "lerna": "^3.4.3"
+  }
+}

capabilities/testdrive-jsui/node_modules/resolve/test/resolver/multirepo/packages/package-a/index.js

@@ -0,0 +1,35 @@
+'use strict';
+
+var assert = require('assert');
+var path = require('path');
+var resolve = require('resolve');
+
+var basedir = __dirname + '/node_modules/@my-scope/package-b';
+
+var expected = path.join(__dirname, '../../node_modules/jquery/dist/jquery.js');
+
+/*
+ * preserveSymlinks === false
+ * will search NPM package from
+ * - packages/package-b/node_modules
+ * - packages/node_modules
+ * - node_modules
+ */
+assert.equal(resolve.sync('jquery', { basedir: basedir, preserveSymlinks: false }), expected);
+assert.equal(resolve.sync('../../node_modules/jquery', { basedir: basedir, preserveSymlinks: false }), expected);
+
+/*
+ * preserveSymlinks === true
+ * will search NPM package from
+ * - packages/package-a/node_modules/@my-scope/packages/package-b/node_modules
+ * - packages/package-a/node_modules/@my-scope/packages/node_modules
+ * - packages/package-a/node_modules/@my-scope/node_modules
+ * - packages/package-a/node_modules/node_modules
+ * - packages/package-a/node_modules
+ * - packages/node_modules
+ * - node_modules
+ */
+assert.equal(resolve.sync('jquery', { basedir: basedir, preserveSymlinks: true }), expected);
+assert.equal(resolve.sync('../../../../../node_modules/jquery', { basedir: basedir, preserveSymlinks: true }), expected);
+
+console.log(' * all monorepo paths successfully resolved through symlinks');

capabilities/testdrive-jsui/node_modules/resolve/test/resolver/multirepo/packages/package-a/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "@my-scope/package-a",
+  "version": "0.0.0",
+  "private": true,
+  "description": "",
+  "license": "MIT",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: run tests from root\" && exit 1"
+  },
+  "dependencies": {
+    "@my-scope/package-b": "^0.0.0"
+  }
+}

capabilities/testdrive-jsui/node_modules/resolve/test/resolver/multirepo/packages/package-b/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "@my-scope/package-b",
+  "private": true,
+  "version": "0.0.0",
+  "description": "",
+  "license": "MIT",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: run tests from root\" && exit 1"
+  },
+  "dependencies": {
+    "@my-scope/package-a": "^0.0.0"
+  }
+}