接入画板生成视频功能

新增画板底部生成视频入口、Lovart 风格面板、视频图层渲染与元数据展示。

接入 /api/editor/videos/generations 契约与后端 Ark/VectorEngine 视频任务链路。

统一编辑器生成类泥点配置，并补充 UI 设计图、参考图与生成面板结构测试。

更新编辑器技术方案、生成类面板方案和 Hermes 共享决策/踩坑记录。

server-rs/crates/shared-contracts/src/assets.rs

@@ -346,6 +346,38 @@ pub struct EditorCharacterAnimationGenerateResponse {
     pub price_mud_points: u32,
 }
 
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "camelCase")]
+pub struct EditorVideoGenerateRequest {
+    pub prompt: String,
+    pub model: String,
+    pub aspect_ratio: String,
+    pub duration_seconds: u32,
+    pub resolution: String,
+    pub mode: String,
+    pub sound: String,
+    pub price_mud_points: u32,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "camelCase")]
+pub struct EditorVideoGenerateResponse {
+    pub ok: bool,
+    pub video_src: String,
+    pub width: u32,
+    pub height: u32,
+    pub source_type: String,
+    pub prompt: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub actual_prompt: Option<String>,
+    pub model: String,
+    pub provider: String,
+    pub task_id: String,
+    pub duration_seconds: u32,
+    pub resolution: String,
+    pub price_mud_points: u32,
+}
+
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct CharacterAnimationDraftPayload {
@@ -908,6 +940,53 @@ mod tests {
         assert_eq!(payload["fps"], json!(8));
     }
 
+    #[test]
+    fn editor_video_request_supports_lovart_model_contract() {
+        let payload = serde_json::to_value(EditorVideoGenerateRequest {
+            prompt: "让角色向镜头挥手".to_string(),
+            model: "kling3.0-omni".to_string(),
+            aspect_ratio: "16:9".to_string(),
+            duration_seconds: 5,
+            resolution: "480p".to_string(),
+            mode: "std".to_string(),
+            sound: "off".to_string(),
+            price_mud_points: 50,
+        })
+        .expect("request should serialize");
+
+        assert_eq!(payload["aspectRatio"], json!("16:9"));
+        assert_eq!(payload["durationSeconds"], json!(5));
+        assert_eq!(payload["priceMudPoints"], json!(50));
+        assert_eq!(payload["model"], json!("kling3.0-omni"));
+    }
+
+    #[test]
+    fn editor_video_response_uses_canvas_video_shape() {
+        let payload = serde_json::to_value(EditorVideoGenerateResponse {
+            ok: true,
+            video_src: "/generated-editor-videos/task-1/preview.mp4".to_string(),
+            width: 1280,
+            height: 720,
+            source_type: "generated".to_string(),
+            prompt: "让角色向镜头挥手".to_string(),
+            actual_prompt: Some("让角色向镜头挥手".to_string()),
+            model: "kling3.0-omni".to_string(),
+            provider: "VectorEngine".to_string(),
+            task_id: "task-1".to_string(),
+            duration_seconds: 5,
+            resolution: "480p".to_string(),
+            price_mud_points: 50,
+        })
+        .expect("response should serialize");
+
+        assert_eq!(
+            payload["videoSrc"],
+            json!("/generated-editor-videos/task-1/preview.mp4")
+        );
+        assert_eq!(payload["sourceType"], json!("generated"));
+        assert_eq!(payload["durationSeconds"], json!(5));
+    }
+
     #[test]
     fn character_workflow_cache_response_keeps_legacy_shape() {
         let payload = serde_json::to_value(CharacterWorkflowCacheSaveResponse {