feat: 重构配置布局，server.listen/storage/logging + probes.execution 分组

- 新增 server.listen (host/port)、server.storage (dataDir/retention)、
  server.logging 分组
- 新增 probes.execution (maxConcurrentChecks) 分组，替代顶层 runtime
- 旧配置入口 (runtime/logging/server.host/server.port/server.dataDir)
  启动期拒绝
- 更新 types.ts、builder.ts、config-loader.ts 适配新路径
- 更新 probe-config.schema.json、probes.example.yaml、README.md、
  DEVELOPMENT.md
- 补充 config-loader 和 variables 测试覆盖新路径和旧入口拒绝
- 同步 5 个 delta specs 到主规范 (probe-config, config-variables,
  data-retention, probe-engine, runtime-logging)
- 归档 openspec change reorganize-config-layout

src/server/checker/config-loader.ts

@@ -4,13 +4,14 @@ import { dirname, resolve } from "node:path";
 import type { ConfigValidationIssue } from "./schema/issues";
 import type {
   DefaultsConfig,
-  EngineRuntimeConfig,
+  ExecutionConfig,
   LoggingConfig,
   LogLevel,
   RawTargetConfig,
   ResolvedLoggingConfig,
   ResolvedTargetBase,
   RotationFrequency,
+  ServerStorageConfig,
 } from "./types";
 
 import { checkerRegistry } from "./runner";
@@ -87,20 +88,23 @@ export async function loadConfig(configPath: string): Promise<ResolvedConfig> {
 
   const configDir = dirname(resolve(configPath));
   const server = validated.server ?? {};
-  const runtime = validated.runtime ?? {};
+  const listen = server.listen ?? {};
+  const storage = server.storage ?? {};
   const defaults = validated.defaults ?? {};
 
-  const host = server.host ?? DEFAULT_HOST;
-  const port = server.port ?? DEFAULT_PORT;
-  const dataDir = resolve(configDir, server.dataDir ?? DEFAULT_DATA_DIR);
+  const host = listen.host ?? DEFAULT_HOST;
+  const port = listen.port ?? DEFAULT_PORT;
+  const dataDir = resolve(configDir, storage.dataDir ?? DEFAULT_DATA_DIR);
 
-  const maxConcurrentChecks = resolveMaxConcurrentChecks(runtime);
-  const retentionMs = resolveRetention(runtime);
+  const probes = validated.probes ?? {};
+  const execution = probes.execution ?? {};
+  const maxConcurrentChecks = resolveMaxConcurrentChecks(execution);
+  const retentionMs = resolveRetention(storage);
 
-  const logging = resolveLogging(validated.logging ?? {}, dataDir, configDir);
+  const logging = resolveLogging(server.logging ?? {}, dataDir, configDir);
 
   const allRuntimeIssues = [...allIssues];
-  validateLoggingConfig(validated.logging, allRuntimeIssues);
+  validateLoggingConfig(server.logging, allRuntimeIssues);
   if (allRuntimeIssues.length > 0) {
     throwConfigIssues(dedupeIssues(allRuntimeIssues));
   }
@@ -172,19 +176,19 @@ function resolveLogLevel(level: unknown, fallback: LogLevel): LogLevel {
   return fallback;
 }
 
-function resolveMaxConcurrentChecks(runtime: EngineRuntimeConfig): number {
-  if (runtime.maxConcurrentChecks === undefined) return DEFAULT_MAX_CONCURRENT_CHECKS;
+function resolveMaxConcurrentChecks(execution: ExecutionConfig): number {
+  if (execution.maxConcurrentChecks === undefined) return DEFAULT_MAX_CONCURRENT_CHECKS;
   if (
-    !isNumber(runtime.maxConcurrentChecks) ||
-    !Number.isInteger(runtime.maxConcurrentChecks) ||
-    runtime.maxConcurrentChecks <= 0
+    !isNumber(execution.maxConcurrentChecks) ||
+    !Number.isInteger(execution.maxConcurrentChecks) ||
+    execution.maxConcurrentChecks <= 0
   )
     return DEFAULT_MAX_CONCURRENT_CHECKS;
-  return runtime.maxConcurrentChecks;
+  return execution.maxConcurrentChecks;
 }
 
-function resolveRetention(runtime: EngineRuntimeConfig): number {
-  return parseDuration(runtime.retention ?? DEFAULT_RETENTION);
+function resolveRetention(storage: ServerStorageConfig): number {
+  return parseDuration(storage.retention ?? DEFAULT_RETENTION);
 }
 
 function resolveTarget(
@@ -277,8 +281,8 @@ function validateConfig(config: RawProbeConfig): ConfigValidationIssue[] {
   validateDurationValue(config.defaults?.interval, "defaults.interval", issues);
   validateDurationValue(config.defaults?.timeout, "defaults.timeout", issues);
   validateDurationValue(
-    isString(config.runtime?.retention) ? config.runtime.retention : undefined,
-    "runtime.retention",
+    isString(config.server?.storage?.retention) ? config.server.storage.retention : undefined,
+    "server.storage.retention",
     issues,
   );
   for (let i = 0; i < config.targets.length; i++) {
@@ -328,7 +332,11 @@ function validateLoggingConfig(logging: LoggingConfig | undefined, issues: Confi
 
   if (logging.level !== undefined && !VALID_LOG_LEVELS.includes(logging.level)) {
     issues.push(
-      issue("invalid-value", "logging.level", `日志等级非法: "${logging.level}"，支持: ${VALID_LOG_LEVELS.join(", ")}`),
+      issue(
+        "invalid-value",
+        "server.logging.level",
+        `日志等级非法: "${logging.level}"，支持: ${VALID_LOG_LEVELS.join(", ")}`,
+      ),
     );
   }
 
@@ -336,7 +344,7 @@ function validateLoggingConfig(logging: LoggingConfig | undefined, issues: Confi
     issues.push(
       issue(
         "invalid-value",
-        "logging.console.level",
+        "server.logging.console.level",
         `日志等级非法: "${logging.console.level}"，支持: ${VALID_LOG_LEVELS.join(", ")}`,
       ),
     );
@@ -346,7 +354,7 @@ function validateLoggingConfig(logging: LoggingConfig | undefined, issues: Confi
     issues.push(
       issue(
         "invalid-value",
-        "logging.file.level",
+        "server.logging.file.level",
         `日志等级非法: "${logging.file.level}"，支持: ${VALID_LOG_LEVELS.join(", ")}`,
       ),
     );
@@ -354,7 +362,7 @@ function validateLoggingConfig(logging: LoggingConfig | undefined, issues: Confi
 
   if (logging.file?.path !== undefined) {
     if (!isString(logging.file.path) || logging.file.path.trim() === "") {
-      issues.push(issue("invalid-value", "logging.file.path", "日志路径不能为空字符串或空白字符串"));
+      issues.push(issue("invalid-value", "server.logging.file.path", "日志路径不能为空字符串或空白字符串"));
     }
   }
 
@@ -363,11 +371,15 @@ function validateLoggingConfig(logging: LoggingConfig | undefined, issues: Confi
     try {
       const bytes = parseSize(rotation.size);
       if (bytes <= 0) {
-        issues.push(issue("invalid-value", "logging.file.rotation.size", "滚动大小必须为正整数字节数"));
+        issues.push(issue("invalid-value", "server.logging.file.rotation.size", "滚动大小必须为正整数字节数"));
       }
     } catch (error) {
       issues.push(
-        issue("invalid-value", "logging.file.rotation.size", error instanceof Error ? error.message : "size 格式非法"),
+        issue(
+          "invalid-value",
+          "server.logging.file.rotation.size",
+          error instanceof Error ? error.message : "size 格式非法",
+        ),
       );
     }
   }
@@ -376,7 +388,7 @@ function validateLoggingConfig(logging: LoggingConfig | undefined, issues: Confi
     issues.push(
       issue(
         "invalid-value",
-        "logging.file.rotation.frequency",
+        "server.logging.file.rotation.frequency",
         `滚动频率非法: "${rotation.frequency}"，支持: ${VALID_ROTATION_FREQUENCIES.join(", ")}`,
       ),
     );
@@ -384,7 +396,7 @@ function validateLoggingConfig(logging: LoggingConfig | undefined, issues: Confi
 
   if (rotation?.maxFiles !== undefined) {
     if (!isNumber(rotation.maxFiles) || !Number.isInteger(rotation.maxFiles) || rotation.maxFiles <= 0) {
-      issues.push(issue("invalid-value", "logging.file.rotation.maxFiles", "maxFiles 必须为正整数"));
+      issues.push(issue("invalid-value", "server.logging.file.rotation.maxFiles", "maxFiles 必须为正整数"));
     }
   }
 }