fix: 错误系统重构、消除静默吞错、update 修复、文档同步

tests/core/config.test.ts

@@ -90,12 +90,11 @@ stages:
     expect(config.stages.archive).toBeDefined();
   });
 
-  it("YAML 解析错误时返回默认配置", async () => {
+  it("YAML 解析错误时抛出 ConfigError", async () => {
     const runeDir = join(TMP_DIR, ".rune");
     await mkdir(runeDir, { recursive: true });
     await writeFile(join(runeDir, "config.yaml"), `stages: [invalid yaml {{{`);
-    const config = await loadConfig(TMP_DIR);
-    expect(config.stages.discuss).toBeDefined();
+    expect(loadConfig(TMP_DIR)).rejects.toThrow(ConfigError);
   });
 });