feat: Scheme 显示名称、打包结果按类型显示、错误分类

- Scheme 配置新增 displayName 字段，下拉框和任务列表显示友好名称
- Ad_Hoc 类型显示下载二维码，App_Store 类型显示 IPA 下载链接
- 新增 error_category 错误分类（证书/描述文件/编译/依赖等）
- 打包服务增加详细错误分析和分类

backend/services/build_service.py

@@ -18,6 +18,67 @@ from ..config import (
 from .log_streamer import log_streamer
 
 
+class BuildError(Exception):
+    """带分类的打包错误"""
+
+    def __init__(self, message: str, category: str = "unknown", detail: str = ""):
+        super().__init__(message)
+        self.category = category
+        self.detail = detail
+
+
+# 错误分类规则：(关键词列表, category, 友好提示)
+_ERROR_RULES = [
+    (["No signing certificate", "Signing certificate \"", "Code Signing Error",
+      "Code Sign error", "errSecInternalComponent", "CSSMERR_TP_NOT_TRUSTED",
+      "iPhone Distribution", "iPhone Developer: no identity found"],
+     "certificate", "签名证书问题：证书过期、未安装或不匹配，请检查钥匙串中的证书"),
+    (["Provisioning profile", "No matching provisioning profiles",
+      "embedded.mobileprovision", "PROVISIONING_PROFILE_SPECIFIER",
+      "provisioning profile", "No matching",
+      "requires a provisioning profile"],
+     "provisioning", "描述文件问题：描述文件过期、不匹配或未安装，请检查 Apple Developer 后台"),
+    (["Undefined symbols", "linker command failed", "ld: symbol(s) not found",
+      "ld: framework not found for"],
+     "compilation", "链接错误：符号未定义或框架缺失，请检查代码引用"),
+    (["Swift Compiler Error", "Use of undeclared identifier",
+      "cannot find type", "cannot find symbol in scope", "no such module"],
+     "compilation", "Swift 编译错误：请检查代码语法和类型引用"),
+    ([" error:", "fatal error:"],
+     "compilation", "代码编译错误：请检查代码是否有语法或类型错误"),
+    (["CocoaPods", "pod install", "ld: library not found for",
+      "library not found for", "Sandbox is not in sync with Podfile.lock"],
+     "dependency", "依赖问题：Pod 依赖缺失或版本不兼容，请检查 Podfile"),
+    (["xcodebuild: error", "Unable to access scheme", "does not contain a scheme"],
+     "build", "构建配置错误：Scheme 或 Workspace 配置有误"),
+]
+
+
+def _classify_build_error(output_lines: list, step: str) -> tuple:
+    """解析构建输出，返回 (category, friendly_message)
+
+    Args:
+        output_lines: 构建过程的输出行列表
+        step: 失败步骤 (archive/export)
+
+    Returns:
+        (category, friendly_message) 元组
+    """
+    output_text = "\n".join(output_lines)
+
+    for keywords, category, hint in _ERROR_RULES:
+        for kw in keywords:
+            if kw.lower() in output_text.lower():
+                return category, hint
+
+    # 未匹配到特定分类
+    if step == "archive":
+        return "build", "Archive 失败：请查看详细日志排查原因"
+    elif step == "export":
+        return "build", "导出 IPA 失败：请查看详细日志排查原因"
+    return "unknown", "打包失败：请查看详细日志排查原因"
+
+
 def _cleanup_build_dir(build_dir: Path):
     """删除整个打包目录"""
     try:
@@ -234,10 +295,25 @@ async def run_build_task(task_id: str):
                 await asyncio.to_thread(_cleanup_build_dir, build_dir)
 
         except Exception as e:
+            if isinstance(e, BuildError):
+                category = e.category
+                error_msg = str(e)
+            else:
+                # 根据异常消息推断分类
+                msg = str(e).lower()
+                if "git" in msg:
+                    category = "git"
+                elif "配置替换" in msg:
+                    category = "config"
+                elif "混淆" in msg:
+                    category = "config"
+                else:
+                    category = "unknown"
+                error_msg = str(e)
             await asyncio.to_thread(_db_update, db, task,
                                     status="failed", completed_at=datetime.utcnow(),
-                                    error_message=str(e))
-            await log_streamer.emit_error(task_id, f"打包失败: {str(e)}")
+                                    error_message=error_msg, error_category=category)
+            await log_streamer.emit_error(task_id, f"打包失败: {error_msg}")
             if build_dir and build_dir.exists():
                 await asyncio.to_thread(_cleanup_build_dir, build_dir)
 
@@ -470,6 +546,7 @@ async def build_project(task_id: str, task, build_dir: Path) -> Path:
         f"-derivedDataPath {export_path / 'derived_data'} "
         f"-destination generic/platform=ios -quiet"
     )
+    archive_output = []
     process = await asyncio.create_subprocess_shell(
         archive_cmd,
         cwd=str(build_dir),
@@ -479,11 +556,13 @@ async def build_project(task_id: str, task, build_dir: Path) -> Path:
     async for line in process.stdout:
         decoded = line.decode("utf-8", errors="replace").strip()
         if decoded:
+            archive_output.append(decoded)
             await log_streamer.emit(task_id, decoded)
     await process.wait()
 
     if process.returncode != 0:
-        raise Exception("Archive 失败")
+        category, hint = _classify_build_error(archive_output, "archive")
+        raise BuildError(hint, category=category, detail="\n".join(archive_output[-20:]))
 
     # 导出 IPA
     await log_streamer.emit(task_id, "导出 IPA...")
@@ -494,6 +573,7 @@ async def build_project(task_id: str, task, build_dir: Path) -> Path:
         f"-exportPath {export_path} "
         f"-exportOptionsPlist {export_plist}"
     )
+    export_output = []
     process = await asyncio.create_subprocess_shell(
         export_cmd,
         cwd=str(build_dir),
@@ -503,11 +583,13 @@ async def build_project(task_id: str, task, build_dir: Path) -> Path:
     async for line in process.stdout:
         decoded = line.decode("utf-8", errors="replace").strip()
         if decoded:
+            export_output.append(decoded)
             await log_streamer.emit(task_id, decoded)
     await process.wait()
 
     if process.returncode != 0:
-        raise Exception("导出 IPA 失败")
+        category, hint = _classify_build_error(export_output, "export")
+        raise BuildError(hint, category=category, detail="\n".join(export_output[-20:]))
 
     # 查找 IPA 文件
     ipa_files = list(export_path.glob("*.ipa"))