update

src/main/api-server.ts

@@ -10,6 +10,29 @@ import type { AppDatabase } from "./database";
 import { dispatchAgentMessage } from "./message-dispatch";
 import type { DesktopEvent } from "@shared/types";
 
+/**
+ * Decode an HTTP request body to a UTF-8 string, handling the common Windows
+ * encoding issue where Chinese/CJK characters arrive in GBK (CP936) instead
+ * of UTF-8. On Chinese Windows the system ANSI code page is GBK; tools like
+ * curl encode command-line arguments using that code page when stdout is piped
+ * (chcp 65001 does not help because there is no real console). We try strict
+ * UTF-8 first and, only if the bytes are invalid UTF-8, fall back to GBK.
+ */
+function decodeBodyToUtf8(raw: Buffer): string {
+  if (raw.length === 0) return "";
+  try {
+    return new TextDecoder("utf-8", { fatal: true }).decode(raw);
+  } catch {
+    // Bytes are not valid UTF-8 — most likely GBK from Chinese Windows.
+    try {
+      return new TextDecoder("gbk").decode(raw);
+    } catch {
+      // Last resort: lossy UTF-8 (replaces invalid bytes with U+FFFD).
+      return raw.toString("utf8");
+    }
+  }
+}
+
 type RequestHandler = (
   req: IncomingMessage,
   res: ServerResponse,
@@ -234,7 +257,8 @@ export class AgentApiServer {
       });
       req.on("end", () => {
         try {
-          const data = Buffer.concat(chunks).toString("utf8");
+          const raw = Buffer.concat(chunks);
+          const data = decodeBodyToUtf8(raw);
           resolve(data ? JSON.parse(data) : null);
         }
         catch { reject(new Error("Invalid JSON")); }
@@ -244,7 +268,7 @@ export class AgentApiServer {
   }
 
   private json(res: ServerResponse, status: number, data: unknown) {
-    res.writeHead(status, { "Content-Type": "application/json" });
+    res.writeHead(status, { "Content-Type": "application/json; charset=utf-8" });
     res.end(JSON.stringify(data));
   }
 

src/main/database.ts

@@ -76,6 +76,32 @@ function safeRealpath(targetPath: string) {
   }
 }
 
+/**
+ * Find the last complete UTF-8 character boundary in a buffer.
+ * Returns the number of bytes up to (and including) the last complete character.
+ * This prevents corrupting multi-byte CJK characters when slicing at chunk edges.
+ */
+function findUtf8Boundary(buffer: Buffer, bytesRead: number): number {
+  if (bytesRead === 0) return 0;
+  // Walk backwards past continuation bytes (10xxxxxx)
+  let pos = bytesRead - 1;
+  while (pos >= 0 && (buffer[pos] & 0xc0) === 0x80) {
+    pos--;
+  }
+  if (pos < 0) return bytesRead;
+  const lead = buffer[pos];
+  let charLen: number;
+  if ((lead & 0x80) === 0) charLen = 1;
+  else if ((lead & 0xe0) === 0xc0) charLen = 2;
+  else if ((lead & 0xf0) === 0xe0) charLen = 3;
+  else if ((lead & 0xf8) === 0xf0) charLen = 4;
+  else return bytesRead;
+  // If the character is complete within the buffer, keep all bytes
+  if (pos + charLen <= bytesRead) return bytesRead;
+  // Otherwise truncate before the incomplete character
+  return pos;
+}
+
 function taskPriorityOrderSql(columnName: string) {
   return `case ${columnName}
     when 'critical' then 4
@@ -1156,14 +1182,14 @@ export class AppDatabase {
         .run(id, input.companyId, input.taskId, input.agentId, input.workspaceId, input.connectorId, logPath, ts, ts);
       this.db.prepare("update tasks set active_run_id = ?, updated_at = ? where id = ?").run(id, ts, input.taskId);
     });
-    writeFileSync(logPath, "");
+    writeFileSync(logPath, "", "utf8");
     return { id, logPath };
   }
 
   appendRunLog(runId: string, stream: "stdout" | "stderr", chunk: string) {
     const run = this.db.prepare("select log_path as logPath from runs where id = ?").get(runId) as { logPath: string | null } | undefined;
     if (!run?.logPath) return;
-    return appendFile(run.logPath, `[${new Date().toISOString()}][${stream}] ${chunk}`);
+    return appendFile(run.logPath, `[${new Date().toISOString()}][${stream}] ${chunk}`, "utf8");
   }
 
   readRunLog(runId: string) {
@@ -1207,9 +1233,12 @@ export class AppDatabase {
     try {
       const buffer = Buffer.allocUnsafe(bytesToRead);
       const bytesRead = readSync(fileDescriptor, buffer, 0, bytesToRead, safeOffset);
-      const nextOffset = safeOffset + bytesRead;
+      // Find the last complete UTF-8 character boundary to avoid corrupting
+      // multi-byte characters (e.g. Chinese/CJK 3-byte sequences) at the edge.
+      const safeBytesRead = findUtf8Boundary(buffer, bytesRead);
+      const nextOffset = safeOffset + safeBytesRead;
       return {
-        content: buffer.subarray(0, bytesRead).toString("utf8"),
+        content: buffer.subarray(0, safeBytesRead).toString("utf8"),
         offset: safeOffset,
         nextOffset,
         totalBytes,

src/main/desktop-shell-service.ts

@@ -1,4 +1,5 @@
 import { existsSync } from "node:fs";
+import { extname } from "node:path";
 import { pathToFileURL } from "node:url";
 import { resolve, sep } from "node:path";
 import {
@@ -81,14 +82,33 @@ export function createDesktopShellService({
   }
 
   function registerProtocol() {
-    protocol.handle("app", (request) => {
+    const textMimeTypes: Record<string, string> = {
+      ".html": "text/html; charset=utf-8",
+      ".js": "text/javascript; charset=utf-8",
+      ".mjs": "text/javascript; charset=utf-8",
+      ".css": "text/css; charset=utf-8",
+      ".json": "application/json; charset=utf-8",
+      ".svg": "image/svg+xml; charset=utf-8",
+    };
+    protocol.handle("app", async (request) => {
       const url = new URL(request.url);
       const relativePath = decodeURIComponent(url.pathname === "/" ? "index.html" : url.pathname.replace(/^\/+/, ""));
       const targetPath = resolve(rendererDist, relativePath);
       if (!isWithinDirectory(rendererDist, targetPath) || !existsSync(targetPath)) {
         return new Response("Not found", { status: 404 });
       }
-      return net.fetch(pathToFileURL(targetPath).toString());
+      const response = await net.fetch(pathToFileURL(targetPath).toString());
+      const mime = textMimeTypes[extname(targetPath).toLowerCase()];
+      if (mime) {
+        const headers = new Headers(response.headers);
+        headers.set("Content-Type", mime);
+        return new Response(response.body, {
+          status: response.status,
+          statusText: response.statusText,
+          headers,
+        });
+      }
+      return response;
     });
   }
 

src/main/prompt-builder.ts

@@ -451,38 +451,47 @@ Do not print or echo AGENT_COMPANY_API_KEY into comments, summaries, or external
 ## Authentication & Request Format
 Every API call MUST include these headers:
   Authorization: Bearer $AGENT_COMPANY_API_KEY
-  Content-Type: application/json
+  Content-Type: application/json; charset=utf-8
   X-Agent-Company-Run-Id: ${ctx.runId}
 
-Example using curl:
-  curl -s -X GET "$AGENT_COMPANY_API_URL/api/agents/me" \\
-    -H "Authorization: Bearer $AGENT_COMPANY_API_KEY" \\
-    -H "Content-Type: application/json" \\
-    -H "X-Agent-Company-Run-Id: ${ctx.runId}"
+IMPORTANT: On Windows, prefer using Node.js fetch() for API calls instead of curl,
+because curl on Windows may corrupt non-ASCII characters (Chinese, Japanese, etc.).
+If you must use curl, write the JSON body to a temp file first and use curl -d @file.
 
-Example using fetch (Node.js):
+Example using fetch (Node.js) — PREFERRED:
   const res = await fetch(\`\${process.env.AGENT_COMPANY_API_URL}/api/agents/me\`, {
     headers: {
       "Authorization": \`Bearer \${process.env.AGENT_COMPANY_API_KEY}\`,
-      "Content-Type": "application/json",
+      "Content-Type": "application/json; charset=utf-8",
       "X-Agent-Company-Run-Id": "${ctx.runId}"
     }
   });
   const data = await res.json();
 
-Example POST using curl:
+Example POST using fetch (Node.js) — PREFERRED for non-ASCII content:
+  const res = await fetch(\`\${process.env.AGENT_COMPANY_API_URL}/api/companies/${ctx.agent.companyId}/issues\`, {
+    method: "POST",
+    headers: {
+      "Authorization": \`Bearer \${process.env.AGENT_COMPANY_API_KEY}\`,
+      "Content-Type": "application/json; charset=utf-8",
+      "X-Agent-Company-Run-Id": "${ctx.runId}"
+    },
+    body: JSON.stringify({title:"Task title",description:"Details",assigneeAgentId:"agent-id",priority:"medium",status:"todo"})
+  });
+
+Example GET using curl:
+  curl -s -X GET "$AGENT_COMPANY_API_URL/api/agents/me" \\
+    -H "Authorization: Bearer $AGENT_COMPANY_API_KEY" \\
+    -H "Content-Type: application/json; charset=utf-8" \\
+    -H "X-Agent-Company-Run-Id: ${ctx.runId}"
+
+Example POST using curl (write body to temp file to avoid encoding issues):
+  echo '{"title":"Task title","description":"Details","priority":"medium","status":"todo"}' > /tmp/body.json
   curl -s -X POST "$AGENT_COMPANY_API_URL/api/companies/${ctx.agent.companyId}/issues" \\
     -H "Authorization: Bearer $AGENT_COMPANY_API_KEY" \\
-    -H "Content-Type: application/json" \\
+    -H "Content-Type: application/json; charset=utf-8" \\
     -H "X-Agent-Company-Run-Id: ${ctx.runId}" \\
-    -d '{"title":"Task title","description":"Details","assigneeAgentId":"agent-id","priority":"medium","status":"todo"}'
-
-Example PATCH using curl:
-  curl -s -X PATCH "$AGENT_COMPANY_API_URL/api/issues/ISSUE_ID" \\
-    -H "Authorization: Bearer $AGENT_COMPANY_API_KEY" \\
-    -H "Content-Type: application/json" \\
-    -H "X-Agent-Company-Run-Id: ${ctx.runId}" \\
-    -d '{"status":"in_review","comment":"Work completed. Summary of changes: ..."}'
+    -d @/tmp/body.json
 
 IMPORTANT: Always check the HTTP response status. 200/201 = success, 4xx = client error (read the error message), 5xx = server error (retry once then report).
 

src/renderer/App.tsx

@@ -323,6 +323,10 @@ export function App() {
     }
   }, [snapshot, locale]);
 
+  useEffect(() => {
+    document.documentElement.lang = locale === "zh" ? "zh-CN" : "en";
+  }, [locale]);
+
   const handleLocaleChange = useCallback(async (newLocale: AppLocale) => {
     setLocale(newLocale);
     try {

src/renderer/styles.css

@@ -1,5 +1,13 @@
 @import "tailwindcss";
 
+@theme {
+  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
+    "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB",
+    "Noto Sans CJK SC", Helvetica, Arial, sans-serif;
+  --font-mono: "JetBrains Mono Variable", "Microsoft YaHei", ui-monospace,
+    SFMono-Regular, Menlo, Monaco, Consolas, monospace;
+}
+
 :root {
   color-scheme: light;
   --bg: #fbfbfb;
@@ -82,7 +90,7 @@ body {
   margin: 0;
   background: var(--bg);
   color: var(--text);
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", Helvetica, Arial, sans-serif;
+  font-family: var(--font-sans);
   -webkit-font-smoothing: antialiased;
   text-rendering: optimizeLegibility;
 }
@@ -120,7 +128,7 @@ select {
 }
 
 .mono {
-  font-family: "JetBrains Mono Variable", "Microsoft YaHei", monospace;
+  font-family: var(--font-mono);
 }
 
 .surface {