把画布占位载荷移出受feature门控的assets模块

- 新增 shared-contracts::editor_canvas，承载画布占位与回填载荷并接入 ts-rs 生成
- assets 模块改为内部引用该类型，不再自带定义
- api-server 七处引用改到新模块路径

server-rs/crates/api-server/src/character_animation_assets.rs

@@ -3654,7 +3654,7 @@ fn prepare_editor_video_result(
 }
 
 fn build_editor_character_animation_canvas_placement_item(
-    completion: &shared_contracts::assets::EditorCanvasGenerationCompletionPayload,
+    completion: &shared_contracts::editor_canvas::EditorCanvasGenerationCompletionPayload,
     resource_id: &str,
     width: u32,
     height: u32,

server-rs/crates/api-server/src/editor_agent/utils.rs

@@ -8,15 +8,15 @@ use platform_oss::{
     LegacyAssetPrefix, OssObjectAccess, OssPutObjectRequest, OssSignedGetObjectUrlRequest,
 };
 use serde_json::{Value, json};
-use shared_contracts::assets::{
-    EditorCanvasGenerationCompletionPayload, EditorCanvasGenerationPlaceholderPayload,
-};
 use shared_contracts::editor_agent::{
     EDITOR_AGENT_ATTACHMENT_LABEL_MAX_CODE_POINTS, EDITOR_AGENT_MESSAGES_DOCUMENT_VERSION,
     EditorAgentAttachmentRef, EditorAgentAttachmentSource, EditorAgentConversationDetail,
     EditorAgentConversationMessagesDocument, EditorAgentConversationSummary,
     EditorAgentGeneratedImage, EditorAgentMessage,
 };
+use shared_contracts::editor_canvas::{
+    EditorCanvasGenerationCompletionPayload, EditorCanvasGenerationPlaceholderPayload,
+};
 use shared_kernel::normalize_required_string;
 use spacetime_client::{
     EditorAgentConversationRecord, EditorAssetLibraryRecord, EditorAssetRecord,

server-rs/crates/api-server/src/editor_project.rs

@@ -28,10 +28,10 @@ use serde_json::{Value, json};
 use sha2::{Digest as _, Sha256};
 #[cfg(test)]
 use shared_contracts::assets::EditorAudioGenerateResponse;
-use shared_contracts::assets::{
-    EDITOR_ASSET_LABEL_MAX_CHARS,
+use shared_contracts::assets::{EDITOR_ASSET_LABEL_MAX_CHARS, EditorSceneGenerateRequest};
+use shared_contracts::editor_canvas::{
     EditorCanvasGenerationCompletionPayload as EditorCanvasGenerationCompletionRequest,
-    EditorCanvasGenerationPlaceholderPayload, EditorSceneGenerateRequest,
+    EditorCanvasGenerationPlaceholderPayload,
 };
 use shared_contracts::editor_generation::editor_generation_request_fingerprint;
 use shared_contracts::editor_generation::{

server-rs/crates/api-server/src/editor_project_icon.rs

@@ -22,7 +22,7 @@ use platform_oss::{LegacyAssetPrefix, OssHeadObjectRequest, OssObjectAccess};
 use serde::{Deserialize, Deserializer, Serialize, Serializer, de};
 use serde_json::{Value, json};
 use sha2::{Digest as _, Sha256};
-use shared_contracts::assets::EditorCanvasGenerationCompletionPayload;
+use shared_contracts::editor_canvas::EditorCanvasGenerationCompletionPayload;
 use shared_contracts::editor_generation::editor_generation_stable_asset_object_id;
 use shared_kernel::build_prefixed_uuid_id;
 use spacetime_client::editor_project::{

server-rs/crates/api-server/src/external_editor_api.rs

@@ -7,7 +7,7 @@ use axum::{
 use serde::de::DeserializeOwned;
 use serde::{Deserialize, Serialize};
 use serde_json::{Value, json};
-use shared_contracts::assets::EditorCanvasGenerationCompletionPayload;
+use shared_contracts::editor_canvas::EditorCanvasGenerationCompletionPayload;
 use shared_contracts::external_generation::{
     ExternalEditorGenerationJobResponse, ExternalEditorGenerationSubmissionResponse,
     ExternalGenerationJobStatus,

server-rs/crates/api-server/src/external_generation_worker.rs

@@ -1187,7 +1187,8 @@ struct LegacyEditorImageEditWorkerPayload {
     asset_label: Option<String>,
     source_resource_id: Option<String>,
     target_layer_id: Option<String>,
-    canvas_completion: Option<shared_contracts::assets::EditorCanvasGenerationCompletionPayload>,
+    canvas_completion:
+        Option<shared_contracts::editor_canvas::EditorCanvasGenerationCompletionPayload>,
 }
 
 fn parse_editor_image_edit_worker_payload(

server-rs/crates/api-server/src/vector_engine_audio_generation/generation.rs

@@ -11,6 +11,7 @@ use platform_oss::LegacyAssetPrefix;
 use serde_json::Value;
 use serde_json::json;
 use shared_contracts::assets;
+use shared_contracts::editor_canvas;
 use shared_contracts::editor_generation::{
     editor_generation_request_fingerprint, editor_generation_stable_asset_binding_id,
     editor_generation_stable_asset_object_id,
@@ -460,7 +461,7 @@ struct ProductionSoundEffectWorkerStages<'a> {
     operation_id: &'a str,
     target: AudioAssetBindingTarget,
     project_id: Option<String>,
-    canvas_completion: Option<assets::EditorCanvasGenerationCompletionPayload>,
+    canvas_completion: Option<editor_canvas::EditorCanvasGenerationCompletionPayload>,
     asset_folder_id: Option<String>,
     asset_label: Option<String>,
     normalized: &'a NormalizedEditorSoundEffectRequest,
@@ -1171,7 +1172,7 @@ struct PreparedEditorAudioGenerationInput {
     prompt: String,
     model: String,
     generation_inputs: Option<Value>,
-    canvas_completion: Option<assets::EditorCanvasGenerationCompletionPayload>,
+    canvas_completion: Option<editor_canvas::EditorCanvasGenerationCompletionPayload>,
     price_mud_points: u32,
     generated: PreparedGeneratedEditorAudio,
 }

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

@@ -3,6 +3,7 @@ use std::collections::BTreeMap;
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
+use crate::editor_canvas::EditorCanvasGenerationCompletionPayload;
 use crate::external_generation::ExternalGenerationJobStatusRecord;
 
 pub const EDITOR_ASSET_LABEL_MAX_CHARS: usize = 80;
@@ -472,26 +473,6 @@ pub struct EditorVideoGenerateResponse {
     pub queue_state: Option<ExternalGenerationJobStatusRecord>,
 }
 
-#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
-#[serde(rename_all = "camelCase")]
-pub struct EditorCanvasGenerationPlaceholderPayload {
-    pub x: f64,
-    pub y: f64,
-    pub width: f64,
-    pub height: f64,
-    pub original_width: f64,
-    pub original_height: f64,
-}
-
-#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
-#[serde(rename_all = "camelCase")]
-pub struct EditorCanvasGenerationCompletionPayload {
-    #[serde(default, skip_serializing_if = "Option::is_none")]
-    pub dialog_id: Option<String>,
-    pub title: String,
-    pub placeholder: EditorCanvasGenerationPlaceholderPayload,
-}
-
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
 #[serde(rename_all = "camelCase")]
 pub struct EditorIconSpritesheetGenerateRequest {
@@ -1106,6 +1087,7 @@ pub struct AssetBindingPayload {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::editor_canvas::EditorCanvasGenerationPlaceholderPayload;
     use serde_json::json;
 
     #[test]

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

@@ -0,0 +1,36 @@
+//! 图片画布占位框与生成完成回填载荷。
+//!
+//! 这些类型是纯 DTO，不依赖 OSS 契约，因此不放在受 `oss-contracts` feature
+//! 门控的 `assets` 模块里：3D 生成等不带该 feature 的构建也需要引用它们。
+
+use serde::{Deserialize, Serialize};
+
+pub(crate) const EDITOR_CANVAS_TS_EXPORT_DIR: &str = concat!(
+    env!("CARGO_MANIFEST_DIR"),
+    "/../../../packages/shared/src/contracts/editor-canvas/"
+);
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "camelCase")]
+#[derive(ts_rs::TS)]
+#[ts(export, export_to = EDITOR_CANVAS_TS_EXPORT_DIR)]
+pub struct EditorCanvasGenerationPlaceholderPayload {
+    pub x: f64,
+    pub y: f64,
+    pub width: f64,
+    pub height: f64,
+    pub original_width: f64,
+    pub original_height: f64,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "camelCase")]
+#[derive(ts_rs::TS)]
+#[ts(export, export_to = EDITOR_CANVAS_TS_EXPORT_DIR)]
+pub struct EditorCanvasGenerationCompletionPayload {
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    #[ts(optional = nullable)]
+    pub dialog_id: Option<String>,
+    pub title: String,
+    pub placeholder: EditorCanvasGenerationPlaceholderPayload,
+}

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

@@ -19,6 +19,7 @@ pub mod creation_entry_config;
 #[cfg(any())]
 pub mod creative_agent;
 pub mod editor_agent;
+pub mod editor_canvas;
 pub mod editor_generation;
 pub mod error_reports;
 pub use editor_generation::{