feat: add html-to-flutter skill and research report

- Add .kilo/skills/html-to-flutter/SKILL.md
  - HTML parsing patterns with html package
  - CSS to Flutter style mapping
  - Widget tree generation from HTML templates
  - flutter_html integration (608k downloads, 2.1k likes)
  - Design-time code generation patterns
  - Responsive layout conversion (flexbox/grid → Row/Column)
  - Form, Card, Navigation conversion examples

- Update flutter-developer agent
  - Reference html-to-flutter skill
  - Add HTML template conversion workflow
  - Integration with flutter_html package

- Add research report .kilo/reports/flutter-cycle-analysis.md
  - Gap analysis: HTML→Flutter conversion (critical)
  - Testing gap analysis
  - Network/API gap analysis
  - Storage gap analysis
  - Implementation priority and recommendations
  - Complete workflow for HTML Template + ТЗ → Flutter App

Research sources:
- flutter_html 3.0.0 (2.1k likes, 608k downloads)
- go_router 17.2.0 (5.6k likes, 2.31M downloads)
- flutter_riverpod 3.3.1 (2.8k likes, 1.61M downloads)
- freezed 3.2.5 (4.4k likes, 1.83M downloads)

Closes: HTML template input workflow for Flutter development

.kilo/agents/flutter-developer.md

@@ -656,6 +656,56 @@ This agent uses the following skills for comprehensive Flutter development:
 | `flutter-state` | Riverpod, Bloc, Provider patterns |
 | `flutter-navigation` | go_router, auto_route |
 | `flutter-animation` | Implicit, explicit animations |
+| `html-to-flutter` | Convert HTML templates to Flutter widgets |
+
+### HTML Template Conversion
+
+When HTML templates are provided as input:
+
+1. **Analyze HTML structure** - Identify components, layouts, styles using `html` package
+2. **Parse CSS styles** - Map to Flutter TextStyle, Decoration, EdgeInsets
+3. **Generate widget tree** - Convert HTML elements to Flutter widgets
+4. **Apply business logic** - Add state management, event handlers
+5. **Implement responsive design** - Convert to LayoutBuilder/MediaQuery patterns
+
+**Example HTML → Flutter conversion:**
+
+```html
+<!-- Input HTML -->
+<div class="card">
+  <h3 class="title">Title</h3>
+  <p class="description">Description</p>
+</div>
+```
+
+```dart
+// Output Flutter
+class CardWidget extends StatelessWidget {
+  const CardWidget({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text('Title', style: Theme.of(context).textTheme.titleLarge),
+            const SizedBox(height: 8),
+            Text('Description', style: Theme.of(context).textTheme.bodyMedium),
+          ],
+        ),
+      ),
+    );
+  }
+}
+```
+
+**Recommended packages:**
+- `flutter_html: ^3.0.0` - Runtime HTML rendering
+- `html: ^0.15.6` - HTML parsing
+- `cached_network_image: ^3.3.0` - Image caching from HTML
 
 ### Data
 | Skill | Purpose |