feat(agent): enhance Canvas Agent with new operations and improved message handling

canvas-agent/src/config.ts

@@ -7,7 +7,7 @@ export const DEFAULT_PORT = 17371;
 export const CONFIG_DIR = path.join(os.homedir(), ".infinite-canvas");
 export const CONFIG_FILE = path.join(CONFIG_DIR, "canvas-agent.json");
 export const VERSION = readPackageVersion();
-export const AGENT_PROMPT = "你正在帮助用户操作 Infinite Canvas 网页画布。需要改动画布时优先使用已配置的 infinite-canvas MCP 工具：先 canvas_get_state 读取当前画布，再根据任务使用 canvas_create_text_node、canvas_generate_text、canvas_generate_image、canvas_generate_video、canvas_generate_audio、canvas_create_generation_flow、canvas_create_config_node、canvas_run_generation、canvas_update_node、canvas_connect_nodes 等通用工具；复杂批量改动再用 canvas_apply_ops。需要生成内容时直接调用对应生成工具，不要绑定特定业务场景。不要模拟鼠标点击，不要要求用户手动复制 JSON。";
+export const AGENT_PROMPT = "你正在帮助用户操作 Infinite Canvas 网页画布。需要改动画布时优先使用已配置的 infinite-canvas MCP 工具：先 canvas_get_state 读取当前画布，再根据任务使用 canvas_create_text_node、canvas_generate_text、canvas_generate_image、canvas_generate_video、canvas_generate_audio、canvas_create_generation_flow、canvas_create_config_node、canvas_run_generation、canvas_update_node、canvas_connect_nodes 等通用工具；复杂批量改动再用 canvas_apply_ops，删除连线可用 delete_connections。需要生成内容时直接调用对应生成工具，不要绑定特定业务场景。不要模拟鼠标点击，不要要求用户手动复制 JSON。";
 
 export type CanvasWorkspaceConfig = { workspacePath: string; activeThreadId?: string; pinnedThreadIds?: string[] };
 export type CanvasAgentConfig = { url: string; token: string; origins?: string[]; canvases?: Record<string, CanvasWorkspaceConfig> };

canvas-agent/src/schemas.ts

@@ -37,6 +37,7 @@ export const canvasOpSchema = z.discriminatedUnion("type", [
     z.object({ type: z.literal("add_node"), nodeType: nodeTypeSchema.optional(), id: z.string().optional(), title: z.string().optional(), x: z.number().optional(), y: z.number().optional(), width: z.number().optional(), height: z.number().optional(), position: positionSchema.optional(), metadata: recordSchema.optional() }).passthrough(),
     z.object({ type: z.literal("update_node"), id: z.string(), patch: recordSchema.optional(), metadata: recordSchema.optional() }).passthrough(),
     z.object({ type: z.literal("delete_node"), id: z.string().optional(), ids: z.array(z.string()).optional() }).passthrough(),
+    z.object({ type: z.literal("delete_connections"), id: z.string().optional(), ids: z.array(z.string()).optional(), all: z.boolean().optional() }).passthrough(),
     z.object({ type: z.literal("connect_nodes"), id: z.string().optional(), fromNodeId: z.string(), toNodeId: z.string() }).passthrough(),
     z.object({ type: z.literal("set_viewport"), viewport: viewportSchema }).passthrough(),
     z.object({ type: z.literal("select_nodes"), ids: z.array(z.string()) }).passthrough(),
@@ -105,7 +106,7 @@ export const toolDescriptions: Record<ToolName, string> = {
     canvas_get_state: "读取当前网页画布的节点、连线、选区和视口。",
     canvas_get_selection: "读取当前网页画布选中的节点。",
     canvas_export_snapshot: "导出当前画布快照，用于理解布局。",
-    canvas_apply_ops: "批量操作当前网页画布。ops 支持 add_node、update_node、delete_node、connect_nodes、set_viewport、select_nodes、run_generation。",
+    canvas_apply_ops: "批量操作当前网页画布。ops 支持 add_node、update_node、delete_node、delete_connections、connect_nodes、set_viewport、select_nodes、run_generation。",
     canvas_create_node: "创建任意类型节点：text、image、config、video、audio。适合创建占位图、媒体占位、配置节点或自定义 metadata 节点。",
     canvas_create_text_node: "在当前画布创建单个文本节点。",
     canvas_create_text_nodes: "批量创建文本节点，适合生成标题、段落、脚本、说明等内容块。",