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/config-loader.test.ts

@@ -3,14 +3,13 @@ import { mkdir, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 
-import type { ValueMatcher } from "../../../src/server/checker/expect/types";
 import type { ResolvedCommandTarget } from "../../../src/server/checker/runner/cmd/types";
 import type { ResolvedHttpTarget } from "../../../src/server/checker/runner/http/types";
 import type { ResolvedPingTarget } from "../../../src/server/checker/runner/icmp/types";
 import type { ResolvedTcpTarget } from "../../../src/server/checker/runner/tcp/types";
 
 import { loadConfig, parseDuration } from "../../../src/server/checker/config-loader";
-import { checkValueMatcher } from "../../../src/server/checker/expect/matcher";
+import { checkValueExpectation } from "../../../src/server/checker/expect/value";
 import { checkerRegistry } from "../../../src/server/checker/runner";
 import { CommandChecker } from "../../../src/server/checker/runner/cmd/execute";
 import { HttpChecker } from "../../../src/server/checker/runner/http/execute";
@@ -290,7 +289,7 @@ targets:
     expect(config.targets[0]!.name).toBeNull();
   });
 
-  test("ValueMatcher primitive 简写在加载时归一化后可运行期匹配", async () => {
+  test("ValueMatcher primitive 简写在 resolve 后可运行期匹配", async () => {
     const configPath = join(tempDir, "matcher-shorthand.yaml");
     await writeFile(
       configPath,
@@ -309,7 +308,7 @@ targets:
 
     expect(target.expect?.durationMs).toEqual({ equals: 123 });
     expect(
-      checkValueMatcher(123, target.expect?.durationMs as ValueMatcher, {
+      checkValueExpectation(123, target.expect?.durationMs, {
         path: "durationMs",
         phase: "duration",
       }).matched,
@@ -860,11 +859,19 @@ targets:
     const config = await loadConfig(configPath);
     const t = config.targets[0]!;
     if (t.type === "http") {
-      expect(t.expect).toEqual({
+      expect(t.rawExpect).toEqual({
         body: [{ contains: "ok" }, { json: { equals: "ok", path: "$.status" } }],
         durationMs: { lte: 3000 },
         status: [200, 201],
       });
+      expect(t.expect).toEqual({
+        body: [
+          { kind: "value", matcher: { contains: "ok" } },
+          { kind: "json", matcher: { equals: "ok" }, path: "$.status" },
+        ],
+        durationMs: { lte: 3000 },
+        status: [200, 201],
+      });
     }
   });
 
@@ -893,12 +900,21 @@ targets:
     const config = await loadConfig(configPath);
     const t = config.targets[0]!;
     if (t.type === "cmd") {
-      expect(t.expect).toEqual({
+      expect(t.rawExpect).toEqual({
         durationMs: { lte: 5000 },
         exitCode: [0, 2],
         stderr: [{ empty: true }],
         stdout: [{ contains: "ok" }, { regex: "done" }],
       });
+      expect(t.expect).toEqual({
+        durationMs: { lte: 5000 },
+        exitCode: [0, 2],
+        stderr: [{ kind: "value", matcher: { empty: true } }],
+        stdout: [
+          { kind: "value", matcher: { contains: "ok" } },
+          { kind: "value", matcher: { regex: "done" } },
+        ],
+      });
     }
   });
 
@@ -1917,7 +1933,7 @@ targets:
     const config = await loadConfig(configPath);
     const t = config.targets[0]! as ResolvedTcpTarget;
     expect(t.tcp.readBanner).toBe(true);
-    expect(t.expect?.banner).toEqual([{ contains: "ESMTP" }]);
+    expect(t.expect?.banner).toEqual([{ kind: "value", matcher: { contains: "ESMTP" } }]);
   });
 
   test("tcp expect.banner 未开启 readBanner 抛出错误", async () => {