fix: 修复素材导入时model_id为null的数据库问题

- 在materials表初始创建时添加model_id列，避免依赖迁移
- 在初始索引创建中添加model_id索引
- 添加调试日志跟踪model_id在导入过程中的传递
- 确保素材导入时选择的模特ID能正确保存到数据库
- 解决素材导入+选择模特后数据库结果model_id=null的问题

apps/desktop/src-tauri/src/business/services/material_service.rs

@@ -133,6 +133,9 @@ impl MaterialService {
         // 确定素材类型
         let material_type = MaterialType::from_extension(extension);
         
+        // 添加调试日志
+        println!("Creating material with model_id: {:?}", model_id);
+
         // 创建素材对象（带模特绑定）
         let material = Material::new_with_model(
             project_id.to_string(),

apps/desktop/src-tauri/src/data/repositories/material_repository.rs

@@ -26,7 +26,10 @@ impl MaterialRepository {
     /// 创建素材
     pub fn create(&self, material: &Material) -> Result<()> {
         let conn = self.connection.lock().unwrap();
-        
+
+        // 添加调试日志
+        println!("Creating material with model_id: {:?}", material.model_id);
+
         let metadata_json = serde_json::to_string(&material.metadata)?;
         let scene_detection_json = material.scene_detection.as_ref()
             .map(|sd| serde_json::to_string(sd))

apps/desktop/src-tauri/src/infrastructure/database.rs

@@ -114,6 +114,7 @@ impl Database {
             "CREATE TABLE IF NOT EXISTS materials (
                 id TEXT PRIMARY KEY,
                 project_id TEXT NOT NULL,
+                model_id TEXT,
                 name TEXT NOT NULL,
                 original_path TEXT NOT NULL,
                 file_size INTEGER NOT NULL,
@@ -402,6 +403,11 @@ impl Database {
             [],
         )?;
 
+        conn.execute(
+            "CREATE INDEX IF NOT EXISTS idx_materials_model_id ON materials (model_id)",
+            [],
+        )?;
+
         // 创建模板表索引
         conn.execute(
             "CREATE INDEX IF NOT EXISTS idx_templates_import_status ON templates (import_status)",
@@ -875,18 +881,29 @@ impl Database {
         let has_model_id_column = conn.prepare("SELECT model_id FROM materials LIMIT 1").is_ok();
         if !has_model_id_column {
             println!("Adding model_id column to materials table");
-            conn.execute(
+            match conn.execute(
                 "ALTER TABLE materials ADD COLUMN model_id TEXT",
                 [],
-            )?;
+            ) {
+                Ok(_) => {
+                    println!("Successfully added model_id column to materials table");
 
-            // 创建模特关联索引
-            conn.execute(
-                "CREATE INDEX IF NOT EXISTS idx_materials_model_id ON materials (model_id)",
-                [],
-            )?;
-
-            println!("Added model_id column and index to materials table");
+                    // 创建模特关联索引
+                    match conn.execute(
+                        "CREATE INDEX IF NOT EXISTS idx_materials_model_id ON materials (model_id)",
+                        [],
+                    ) {
+                        Ok(_) => println!("Successfully created index on model_id column"),
+                        Err(e) => println!("Warning: Failed to create index on model_id column: {}", e),
+                    }
+                }
+                Err(e) => {
+                    println!("Error adding model_id column to materials table: {}", e);
+                    return Err(e.into());
+                }
+            }
+        } else {
+            println!("model_id column already exists in materials table");
         }
 
         // 添加片段匹配规则字段到轨道片段表

apps/desktop/src-tauri/src/presentation/commands/material_commands.rs

@@ -42,6 +42,8 @@ pub async fn import_materials_async(
     request: CreateMaterialRequest,
     app_handle: tauri::AppHandle,
 ) -> Result<MaterialImportResult, String> {
+    // 添加调试日志
+    println!("Import request received with model_id: {:?}", request.model_id);
     // 获取数据库连接，避免持有MutexGuard
     let connection = {
         let repository_guard = state.get_material_repository()