feat: 新增 target description 字段，收紧 id/name 长度，调整延迟列和名称列

src/server/checker/runner/cmd/execute.ts

@@ -187,6 +187,7 @@ export class CommandChecker implements CheckerDefinition<ResolvedCommandTarget>
         exec: t.cmd.exec,
         maxOutputBytes,
       },
+      description: null,
       expect: target.expect as CommandExpectConfig | undefined,
       group: target.group ?? "default",
       id: t.id,

src/server/checker/runner/db/execute.ts

@@ -180,6 +180,7 @@ export class DbChecker implements CheckerDefinition<ResolvedDbTarget> {
         query: t.db.query,
         url: t.db.url,
       },
+      description: null,
       expect: target.expect as DbExpectConfig | undefined,
       group: target.group ?? "default",
       id: t.id,

src/server/checker/runner/http/execute.ts

@@ -112,6 +112,7 @@ export class HttpChecker implements CheckerDefinition<ResolvedHttpTarget> {
     const maxBodyBytes = parseSize(t.http.maxBodyBytes ?? httpDefaults?.maxBodyBytes ?? "100MB");
 
     return {
+      description: null,
       expect: target.expect as HttpExpectConfig | undefined,
       group: target.group ?? "default",
       http: {