迁移到 bun 框架，移除 js 文件依赖；增加对 tools 参数的校验

src/routes/chat.ts

@@ -230,6 +230,27 @@ const getErrorMessage = (error: {
   data?: { message?: string };
 }) => error.data?.message ?? error.name;
 
+const isObjectRecord = (value: unknown): value is Record<string, unknown> =>
+  typeof value === "object" && value !== null && !Array.isArray(value);
+
+const normalizeToolParams = (value: unknown): Record<string, unknown> => {
+  if (isObjectRecord(value)) {
+    return value;
+  }
+  if (typeof value === "string") {
+    try {
+      const parsed = JSON.parse(value) as unknown;
+      return isObjectRecord(parsed) ? parsed : {};
+    } catch {
+      return {};
+    }
+  }
+  return {};
+};
+
+const hasToolParams = (params: Record<string, unknown>) =>
+  Object.keys(params).length > 0;
+
 type StreamPromptOptions = {
   runtime: OpencodeRuntimeAdapter;
   opencodeSessionId: string;
@@ -386,6 +407,10 @@ const streamPromptResponse = async ({
           });
         }
         if (part.type === "tool") {
+          const toolParams = normalizeToolParams(part.state.input);
+          const isToolFinalState =
+            part.state.status === "completed" || part.state.status === "error";
+
           write("progress", {
             session_id: clientSessionId,
             id: part.id,
@@ -394,12 +419,15 @@ const streamPromptResponse = async ({
             title: getToolProgressTitle(part.tool, part.state.status),
             detail: part.state.status === "error" ? part.state.error : undefined,
           });
-          if (!emittedToolParts.has(part.id)) {
+          if (
+            !emittedToolParts.has(part.id) &&
+            (hasToolParams(toolParams) || isToolFinalState)
+          ) {
             emittedToolParts.add(part.id);
             write("tool_call", {
               session_id: clientSessionId,
               tool: part.tool,
-              params: part.state.input,
+              params: toolParams,
             });
           }
         }