chore(skills): 引入 agent skills 与锁文件

- superpowers（14 个）：流程纪律（brainstorming/TDD/debug/review 等）
- mobile-android-design：Compose + Material 3 设计实现
- android-clean-architecture：分层/UseCase/Repository/Hilt/Room
- compose-multiplatform-patterns / kotlin-coroutines-flows：KMP 与协程
- skills-lock.json：可复现锁文件；陈旧副本 agent/ 加入 .gitignore

.agents/skills/mobile-android-design/SKILL.md

@@ -0,0 +1,101 @@
+---
+name: mobile-android-design
+description: Master Material Design 3 and Jetpack Compose patterns for building native Android apps. Use when designing Android interfaces, implementing Compose UI, or following Google's Material Design guidelines.
+---
+
+# Android Mobile Design
+
+Master Material Design 3 (Material You) and Jetpack Compose to build modern, adaptive Android applications that integrate seamlessly with the Android ecosystem.
+
+## When to Use This Skill
+
+- Designing Android app interfaces following Material Design 3
+- Building Jetpack Compose UI and layouts
+- Implementing Android navigation patterns (Navigation Compose)
+- Creating adaptive layouts for phones, tablets, and foldables
+- Using Material 3 theming with dynamic colors
+- Building accessible Android interfaces
+- Implementing Android-specific gestures and interactions
+- Designing for different screen configurations
+
+## Detailed section: Core Concepts
+
+Originally a 9201-byte section in this SKILL.md. Moved to `references/details.md` to fit Codex's 8 KB skill body cap.
+
+## Quick Start Component
+
+```kotlin
+@Composable
+fun ItemListCard(
+    item: Item,
+    onItemClick: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Card(
+        onClick = onItemClick,
+        modifier = modifier.fillMaxWidth(),
+        shape = RoundedCornerShape(12.dp)
+    ) {
+        Row(
+            modifier = Modifier
+                .padding(16.dp)
+                .fillMaxWidth(),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Box(
+                modifier = Modifier
+                    .size(48.dp)
+                    .clip(CircleShape)
+                    .background(MaterialTheme.colorScheme.primaryContainer),
+                contentAlignment = Alignment.Center
+            ) {
+                Icon(
+                    imageVector = Icons.Default.Star,
+                    contentDescription = null,
+                    tint = MaterialTheme.colorScheme.onPrimaryContainer
+                )
+            }
+
+            Spacer(modifier = Modifier.width(16.dp))
+
+            Column(modifier = Modifier.weight(1f)) {
+                Text(
+                    text = item.title,
+                    style = MaterialTheme.typography.titleMedium
+                )
+                Text(
+                    text = item.subtitle,
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            }
+
+            Icon(
+                imageVector = Icons.Default.ChevronRight,
+                contentDescription = null,
+                tint = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+        }
+    }
+}
+```
+
+## Best Practices
+
+1. **Use Material Theme**: Access colors via `MaterialTheme.colorScheme` for automatic dark mode support
+2. **Support Dynamic Color**: Enable dynamic color on Android 12+ for personalization
+3. **Adaptive Layouts**: Use `WindowSizeClass` for responsive designs
+4. **Content Descriptions**: Add `contentDescription` to all interactive elements
+5. **Touch Targets**: Minimum 48dp touch targets for accessibility
+6. **State Hoisting**: Hoist state to make components reusable and testable
+7. **Remember Properly**: Use `remember` and `rememberSaveable` appropriately
+8. **Preview Annotations**: Add `@Preview` with different configurations
+
+## Common Issues
+
+- **Recomposition Issues**: Avoid passing unstable lambdas; use `remember`
+- **State Loss**: Use `rememberSaveable` for configuration changes
+- **Performance**: Use `LazyColumn` instead of `Column` for long lists
+- **Theme Leaks**: Ensure `MaterialTheme` wraps all composables
+- **Navigation Crashes**: Handle back press and deep links properly
+- **Memory Leaks**: Cancel coroutines in `DisposableEffect`