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/eslint-plugin-promise/rules/prefer-await-to-callbacks.js

@@ -0,0 +1,97 @@
+'use strict'
+
+const { getAncestors } = require('./lib/eslint-compat')
+const getDocsUrl = require('./lib/get-docs-url')
+
+module.exports = {
+  meta: {
+    type: 'suggestion',
+    docs: {
+      description: 'Prefer `async`/`await` to the callback pattern.',
+      url: getDocsUrl('prefer-await-to-callbacks'),
+    },
+    messages: {
+      error: 'Avoid callbacks. Prefer Async/Await.',
+    },
+    schema: [],
+  },
+  create(context) {
+    function checkLastParamsForCallback(node) {
+      const lastParam = node.params[node.params.length - 1] || {}
+      if (lastParam.name === 'callback' || lastParam.name === 'cb') {
+        context.report({ node: lastParam, messageId: 'error' })
+      }
+    }
+    function isInsideYieldOrAwait(node) {
+      return getAncestors(context, node).some((parent) => {
+        return (
+          parent.type === 'AwaitExpression' || parent.type === 'YieldExpression'
+        )
+      })
+    }
+    return {
+      CallExpression(node) {
+        // Callbacks aren't allowed.
+        if (node.callee.name === 'cb' || node.callee.name === 'callback') {
+          context.report({ node, messageId: 'error' })
+          return
+        }
+
+        // Then-ables aren't allowed either.
+        const args = node.arguments
+        const lastArgIndex = args.length - 1
+        const arg = lastArgIndex > -1 && node.arguments[lastArgIndex]
+        if (
+          (arg && arg.type === 'FunctionExpression') ||
+          arg.type === 'ArrowFunctionExpression'
+        ) {
+          // Ignore event listener callbacks.
+          if (
+            node.callee.property &&
+            (node.callee.property.name === 'on' ||
+              node.callee.property.name === 'once')
+          ) {
+            return
+          }
+
+          // carve out exemption for map/filter/etc
+          const arrayMethods = [
+            'map',
+            'every',
+            'forEach',
+            'some',
+            'find',
+            'filter',
+          ]
+          const isLodash =
+            node.callee.object &&
+            ['lodash', 'underscore', '_'].includes(node.callee.object.name)
+          const callsArrayMethod =
+            node.callee.property &&
+            arrayMethods.includes(node.callee.property.name) &&
+            (node.arguments.length === 1 ||
+              (node.arguments.length === 2 && isLodash))
+          const isArrayMethod =
+            node.callee.name &&
+            arrayMethods.includes(node.callee.name) &&
+            node.arguments.length === 2
+          if (callsArrayMethod || isArrayMethod) return
+
+          // actually check for callbacks (I know this is the worst)
+          if (
+            arg.params &&
+            arg.params[0] &&
+            (arg.params[0].name === 'err' || arg.params[0].name === 'error')
+          ) {
+            if (!isInsideYieldOrAwait(node)) {
+              context.report({ node: arg, messageId: 'error' })
+            }
+          }
+        }
+      },
+      FunctionDeclaration: checkLastParamsForCallback,
+      FunctionExpression: checkLastParamsForCallback,
+      ArrowFunctionExpression: checkLastParamsForCallback,
+    }
+  },
+}