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/@rtsao/scc/README.md

@@ -0,0 +1,49 @@
+# `@rtsao/scc`
+
+Find strongly connected components of a directed graph using [Tarjan's algorithm](https://en.wikipedia.org/wiki/Tarjan%27s_strongly_connected_components_algorithm).
+
+This algorithm efficiently yields both a topological order and list of any cycles.
+
+## Installation
+
+```
+yarn add @rtsao/scc
+```
+
+```
+npm install @rtsao/scc
+```
+
+## Usage
+
+```js
+const scc = require("@rtsao/scc");
+
+const digraph = new Map([
+  ["a", new Set(["c", "d"])],
+  ["b", new Set(["a"])],
+  ["c", new Set(["b"])],
+  ["d", new Set(["e"])],
+  ["e", new Set()]
+]);
+
+const components = scc(digraph);
+// [ Set { 'e' }, Set { 'd' }, Set { 'b', 'c', 'a' } ]
+```
+
+#### Illustration of example input digraph
+```
+┌───┐     ┌───┐
+│ d │ ◀── │ a │ ◀┐
+└───┘     └───┘  │
+  │         │    │
+  ▼         ▼    │
+┌───┐     ┌───┐  │
+│ e │     │ c │  │
+└───┘     └───┘  │
+            │    │
+            ▼    │
+          ┌───┐  │
+          │ b │ ─┘
+          └───┘
+```