refactor: expect 类型模型重构，Raw/Resolved 双层分离与断言基础设施内聚

- 重命名 ContentRules→ContentExpectations, KeyValueExpect→KeyedExpectations
- 新增 Raw/Resolved 双层模型：resolve 阶段物化为执行计划，store 持久化 Raw 快照
- HTTP body 按需读取：status/headers 失败或无 body expectation 时不读取 body
- 新增 displayValueExpectation() 解包 failure.expected 用户可读展示
- 修复 checkEarlyTimeout 独立 lte/lt 检查，修复 KeyedExpectations JSON Schema
- 新增 expect/value.ts(resolve/check/display)、keyed.ts、content.ts、headers.ts、status.ts
- 删除旧 normalize.ts/matcher.ts/validate-matcher.ts/key-value.ts
- 更新 DEVELOPMENT.md：expect 五层管线表、displayValueExpectation、1.7↔1.10 交叉引用
- 同步 13 个 main specs，归档 refactor-expect-type-model 变更（62/62 tasks）

tests/server/checker/runner/cmd/runner.test.ts

@@ -1,7 +1,7 @@
 import { describe, expect, test } from "bun:test";
 
 import type { ResolvedCommandTarget } from "../../../../../src/server/checker/runner/cmd/types";
-import type { CheckerContext } from "../../../../../src/server/checker/runner/types";
+import type { CheckerContext, ResolveContext } from "../../../../../src/server/checker/runner/types";
 
 import { CommandChecker } from "../../../../../src/server/checker/runner/cmd/execute";
 
@@ -17,6 +17,10 @@ function makeCtx(timeoutMs = 5000): CheckerContext {
   return { signal: controller.signal };
 }
 
+function makeResolveContext(): ResolveContext {
+  return { configDir: process.cwd(), defaultIntervalMs: 30000, defaults: {}, defaultTimeoutMs: 10000 };
+}
+
 function makeTarget(
   cmd: Partial<ResolvedCommandTarget["cmd"]>,
   overrides?: Partial<ResolvedCommandTarget>,
@@ -94,7 +98,7 @@ describe("CommandChecker", () => {
     const result = await checker.execute(
       makeTarget(
         { args: ["-e", "console.log('hello')"], exec: "bun" },
-        { expect: { stdout: [{ contains: "hello" }] } },
+        { expect: { exitCode: [0], stdout: [{ kind: "value", matcher: { contains: "hello" } }] } },
       ),
       makeCtx(),
     );
@@ -105,7 +109,7 @@ describe("CommandChecker", () => {
     const result = await checker.execute(
       makeTarget(
         { args: ["-e", "console.log('hello')"], exec: "bun" },
-        { expect: { stdout: [{ contains: "nonexistent" }] } },
+        { expect: { exitCode: [0], stdout: [{ kind: "value", matcher: { contains: "nonexistent" } }] } },
       ),
       makeCtx(),
     );
@@ -117,7 +121,7 @@ describe("CommandChecker", () => {
     const result = await checker.execute(
       makeTarget(
         { args: ["-e", "process.stderr.write('error\\n')"], exec: "bun" },
-        { expect: { stderr: [{ contains: "error" }] } },
+        { expect: { exitCode: [0], stderr: [{ kind: "value", matcher: { contains: "error" } }] } },
       ),
       makeCtx(),
     );
@@ -142,7 +146,10 @@ describe("CommandChecker", () => {
 
   test("不使用 shell，通配符不被展开", async () => {
     const result = await checker.execute(
-      makeTarget({ args: ["-e", "console.log('*')"], exec: "bun" }, { expect: { stdout: [{ contains: "*" }] } }),
+      makeTarget(
+        { args: ["-e", "console.log('*')"], exec: "bun" },
+        { expect: { exitCode: [0], stdout: [{ kind: "value", matcher: { contains: "*" } }] } },
+      ),
       makeCtx(),
     );
     expect(result.matched).toBe(true);
@@ -156,7 +163,7 @@ describe("CommandChecker", () => {
           env: { ...processEnv, DIAL_TEST_ENV: "resolved-env" },
           exec: "bun",
         },
-        { expect: { stdout: [{ contains: "resolved-env" }] } },
+        { expect: { exitCode: [0], stdout: [{ kind: "value", matcher: { contains: "resolved-env" } }] } },
       ),
       makeCtx(),
     );
@@ -172,4 +179,11 @@ describe("CommandChecker", () => {
     expect(config.exec).toBe("bun");
     expect(config.args).toEqual(["-e", "console.log('hello')"]);
   });
+
+  test("resolve 未配置 expect 时物化默认 exitCode", () => {
+    const result = checker.resolve({ cmd: { exec: "true" }, id: "test", type: "cmd" }, makeResolveContext());
+
+    expect(result.rawExpect).toBeUndefined();
+    expect(result.expect).toEqual({ exitCode: [0] });
+  });
 });