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）

src/server/checker/runner/llm/schema.ts

@@ -3,9 +3,9 @@ import { Type } from "@sinclair/typebox";
 import type { CheckerSchemas } from "../types";
 
 import {
-  createContentRulesSchema,
-  createKeyValueExpectSchema,
-  createValueMatcherSchema,
+  createRawContentExpectationsSchema,
+  createRawKeyedExpectationsSchema,
+  createRawValueExpectationSchema,
   statusCodePatternSchema,
   stringMapSchema,
 } from "../../schema/fragments";
@@ -55,17 +55,17 @@ export const llmCheckerSchemas: CheckerSchemas = {
   ),
   expect: Type.Object(
     {
-      durationMs: Type.Optional(createValueMatcherSchema()),
-      finishReason: Type.Optional(createValueMatcherSchema()),
-      headers: Type.Optional(createKeyValueExpectSchema()),
-      output: Type.Optional(createContentRulesSchema()),
-      rawFinishReason: Type.Optional(createValueMatcherSchema()),
+      durationMs: Type.Optional(createRawValueExpectationSchema()),
+      finishReason: Type.Optional(createRawValueExpectationSchema()),
+      headers: Type.Optional(createRawKeyedExpectationsSchema()),
+      output: Type.Optional(createRawContentExpectationsSchema()),
+      rawFinishReason: Type.Optional(createRawValueExpectationSchema()),
       status: Type.Optional(Type.Array(statusCodePatternSchema)),
       stream: Type.Optional(
         Type.Object(
           {
             completed: Type.Optional(Type.Boolean()),
-            firstTokenMs: Type.Optional(createValueMatcherSchema()),
+            firstTokenMs: Type.Optional(createRawValueExpectationSchema()),
           },
           { additionalProperties: false },
         ),
@@ -73,9 +73,9 @@ export const llmCheckerSchemas: CheckerSchemas = {
       usage: Type.Optional(
         Type.Object(
           {
-            inputTokens: Type.Optional(createValueMatcherSchema()),
-            outputTokens: Type.Optional(createValueMatcherSchema()),
-            totalTokens: Type.Optional(createValueMatcherSchema()),
+            inputTokens: Type.Optional(createRawValueExpectationSchema()),
+            outputTokens: Type.Optional(createRawValueExpectationSchema()),
+            totalTokens: Type.Optional(createRawValueExpectationSchema()),
           },
           { additionalProperties: false },
         ),