feat:Flash Attention explain modify

Author: Onion99

composeApp/src/commonMain/composeResources/values-zh/strings.xml

@@ -47,7 +47,8 @@
     <string name="settings_advanced_title">高级设置</string>
     <string name="settings_advanced_subtitle">实验性功能和优化</string>
     <string name="settings_flash_attn">Flash Attention (闪电注意力)</string>
-    <string name="settings_flash_attn_desc">降低内存使用并可能加速生成</string>
+    <string name="settings_flash_attn_desc">内存优化的注意力算法。推荐在内存有限的设备上启用（&lt;8GB）。</string>
+    <string name="settings_flash_attn_info">**优势：**\n• 降低显存/内存使用约30-50%\n• 在现代GPU上可能加速生成\n• 数学上等价于标准注意力机制\n\n**兼容性：**\n• 在NVIDIA GPU上效果最佳（算力≥7.5）\n• 部分纯CPU环境可能不兼容\n• 如遇崩溃或画质异常请禁用\n\n**建议：**\n内存低于8GB或希望加速推理时启用。</string>
     <string name="settings_quantization">模型权重类型 (wtype)</string>
     <string name="settings_quantization_desc">控制模型权重在内存中的存储方式。精度越高=质量越好但占用内存越多。</string>
     <string name="settings_quantization_warning">⚠️ 仅供高级用户。更改需要重新加载模型（长时间初始化）且可能导致画质下降。大多数用户应保持"自动"。</string>

composeApp/src/commonMain/composeResources/values/strings.xml

@@ -48,7 +48,8 @@
     <string name="settings_advanced_title">Advanced Settings</string>
     <string name="settings_advanced_subtitle">Experimental features and optimizations</string>
     <string name="settings_flash_attn">Flash Attention</string>
-    <string name="settings_flash_attn_desc">Reduces memory usage and potentially speeds up generation</string>
+    <string name="settings_flash_attn_desc">Memory-optimized attention algorithm. Recommended for devices with limited RAM (&lt;8GB).</string>
+    <string name="settings_flash_attn_info">**Benefits:**\n• Reduces VRAM/RAM usage by ~30-50%\n• May speed up generation on modern GPUs\n• Mathematically equivalent to standard attention\n\n**Compatibility:**\n• Works best on NVIDIA GPUs (compute capability ≥7.5)\n• May not work on some CPU-only setups\n• Disable if experiencing crashes or artifacts\n\n**Recommendation:**\nEnable if you have &lt;8GB RAM or want faster inference.</string>
     <string name="settings_quantization">Model Weight Type (wtype)</string>
     <string name="settings_quantization_desc">Controls how model weights are stored in memory. Higher precision = better quality but more RAM.</string>
     <string name="settings_quantization_warning">⚠️ Advanced users only. Changing this requires re-loading the model (long initialization) and may cause quality degradation. Most users should keep "Auto".</string>

composeApp/src/commonMain/kotlin/org/onion/diffusion/ui/screen/AdvancedSettingScreen.kt

@@ -62,6 +62,7 @@ import minediffusion.composeapp.generated.resources.settings_advanced_title
 import minediffusion.composeapp.generated.resources.settings_back
 import minediffusion.composeapp.generated.resources.settings_flash_attn
 import minediffusion.composeapp.generated.resources.settings_flash_attn_desc
+import minediffusion.composeapp.generated.resources.settings_flash_attn_info
 import minediffusion.composeapp.generated.resources.settings_offload_to_cpu
 import minediffusion.composeapp.generated.resources.settings_offload_to_cpu_desc
 import minediffusion.composeapp.generated.resources.settings_keep_clip_on_cpu
@@ -134,6 +135,28 @@ fun AdvancedSettingScreen(
                         )
                     }
 
+                    // Flash Attention Info Box
+                    if (chatViewModel.diffusionFlashAttn.value) {
+                        Spacer(modifier = Modifier.height(12.dp))
+                        
+                        Box(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .padding(horizontal = 20.dp)
+                                .clip(RoundedCornerShape(12.dp))
+                                .background(Color(0xFFE8F5E9)) // Light green success background
+                                .border(1.dp, Color(0xFF66BB6A), RoundedCornerShape(12.dp))
+                                .padding(12.dp)
+                        ) {
+                            Text(
+                                text = stringResource(Res.string.settings_flash_attn_info),
+                                style = AppTheme.typography.bodySmall,
+                                color = Color(0xFF2E7D32), // Dark green text
+                                lineHeight = 18.sp
+                            )
+                        }
+                    }
+                    
                     SettingsRow(
                         title = stringResource(Res.string.settings_offload_to_cpu),
                         subtitle = stringResource(Res.string.settings_offload_to_cpu_desc),