diff --git a/packages/parser/src/chatlab-validator.test.ts b/packages/parser/src/chatlab-validator.test.ts
index 2b21dfbf..b6b4362b 100644
--- a/packages/parser/src/chatlab-validator.test.ts
+++ b/packages/parser/src/chatlab-validator.test.ts
@@ -72,6 +72,34 @@ test('validates a complete ChatLab JSONL file without exposing message content',
   }
 })
 
+test('rejects an ownerId outside inferred JSONL members', async () => {
+  const root = makeTempDir()
+  const filePath = path.join(root, 'unknown-owner.jsonl')
+  writeJsonl(filePath, [
+    {
+      _type: 'header',
+      chatlab: { version: CHATLAB_FORMAT_VERSION, exportedAt: 1_711_468_800 },
+      meta: { name: 'Example', platform: 'custom', type: 'group', ownerId: 'missing' },
+    },
+    {
+      _type: 'message',
+      sender: 'alice',
+      accountName: 'Alice',
+      timestamp: 1_711_468_800,
+      type: 0,
+      content: 'Hello',
+    },
+  ])
+
+  try {
+    const report = await validateChatLabFile(filePath)
+    assert.equal(report.valid, false)
+    assert.ok(report.issues.some((issue) => issue.code === 'UNKNOWN_OWNER'))
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true })
+  }
+})
+
 test('accepts the initial ChatLab JSON format version', async () => {
   const root = makeTempDir()
   const filePath = path.join(root, 'legacy.json')
diff --git a/packages/parser/src/chatlab-validator.ts b/packages/parser/src/chatlab-validator.ts
index d7227b3c..ebacd177 100644
--- a/packages/parser/src/chatlab-validator.ts
+++ b/packages/parser/src/chatlab-validator.ts
@@ -357,12 +357,17 @@ function finalizeState(
     }
   }
 
-  if (state.memberIds.size > 0) {
+  const ownerMemberIds =
+    state.memberIds.size > 0 ? state.memberIds : requireExplicitMembers ? undefined : state.senderIds
+  if (ownerMemberIds) {
     for (const ownerId of state.ownerIds) {
-      if (!state.memberIds.has(ownerId)) {
-        addIssue(state, 'error', 'UNKNOWN_OWNER', 'meta.ownerId must reference an explicit member platformId.')
+      if (!ownerMemberIds.has(ownerId)) {
+        addIssue(state, 'error', 'UNKNOWN_OWNER', 'meta.ownerId must reference a member platformId.')
       }
     }
+  }
+
+  if (state.memberIds.size > 0) {
     for (const senderId of state.senderIds) {
       if (!state.memberIds.has(senderId)) {
         addIssue(
diff --git a/packages/parser/src/formats/chatlab-jsonl.test.ts b/packages/parser/src/formats/chatlab-jsonl.test.ts
index 058d8eae..2dfb4d9c 100644
--- a/packages/parser/src/formats/chatlab-jsonl.test.ts
+++ b/packages/parser/src/formats/chatlab-jsonl.test.ts
@@ -5,7 +5,7 @@ import path from 'node:path'
 import test from 'node:test'
 import { MessageType } from '@openchatlab/shared-types'
 
-import { findEntryFileInDirectory, parseFileWithFormat } from '../index'
+import { detectFormat, findEntryFileInDirectory, parseFileWithFormat } from '../index'
 
 function makeTempDir(): string {
   const baseDir = process.env.CHATLAB_TEST_TMPDIR ?? (fs.existsSync('/private/tmp') ? '/private/tmp' : os.tmpdir())
@@ -96,3 +96,46 @@ test('directory entry detection accepts a top-level ChatLab JSONL file', () => {
     fs.rmSync(root, { recursive: true, force: true })
   }
 })
+
+test('auto-detects ChatLab JSONL after leading comments and blank lines', () => {
+  const root = makeTempDir()
+  const filePath = path.join(root, 'commented-chat.jsonl')
+  writeChatLabJsonl(filePath, 1)
+  fs.writeFileSync(filePath, `# generated locally\n\n${fs.readFileSync(filePath, 'utf8')}`, 'utf8')
+
+  try {
+    assert.equal(detectFormat(filePath)?.id, 'chatlab-jsonl')
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true })
+  }
+})
+
+test('auto-detects ChatLab JSONL regardless of header field order', () => {
+  const root = makeTempDir()
+  const filePath = path.join(root, 'reordered-header.jsonl')
+  writeChatLabJsonl(filePath, 1)
+
+  const [headerLine, ...remainingLines] = fs.readFileSync(filePath, 'utf8').trimEnd().split('\n')
+  const header = JSON.parse(headerLine) as Record<string, unknown>
+  const reorderedHeader = { chatlab: header.chatlab, meta: header.meta, _type: header._type }
+  fs.writeFileSync(filePath, `${JSON.stringify(reorderedHeader)}\n${remainingLines.join('\n')}\n`, 'utf8')
+
+  try {
+    assert.equal(detectFormat(filePath)?.id, 'chatlab-jsonl')
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true })
+  }
+})
+
+test('auto-detects ChatLab JSONL with a UTF-8 BOM', () => {
+  const root = makeTempDir()
+  const filePath = path.join(root, 'bom-chat.jsonl')
+  writeChatLabJsonl(filePath, 1)
+  fs.writeFileSync(filePath, `\uFEFF${fs.readFileSync(filePath, 'utf8')}`, 'utf8')
+
+  try {
+    assert.equal(detectFormat(filePath)?.id, 'chatlab-jsonl')
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true })
+  }
+})
diff --git a/packages/parser/src/formats/chatlab-jsonl.ts b/packages/parser/src/formats/chatlab-jsonl.ts
index 26f212c4..6fc97229 100644
--- a/packages/parser/src/formats/chatlab-jsonl.ts
+++ b/packages/parser/src/formats/chatlab-jsonl.ts
@@ -117,8 +117,10 @@ export const feature: FormatFeature = {
   priority: 51, // 低优先级，让其他格式先匹配
   extensions: ['.jsonl'],
   signatures: {
-    // 第一行必须是 header 类型，包含 chatlab 信息
-    head: [/^\s*\{.*"_type"\s*:\s*"header".*"chatlab"/],
+    // 跳过格式允许的空行和注释后，分别匹配首条数据中的 header 类型和 chatlab 对象。
+    head: [
+      /^\uFEFF?(?:[ \t]*(?:#[^\r\n]*)?\r?\n)*[ \t]*\{(?=[^\r\n]*"_type"\s*:\s*"header")(?=[^\r\n]*"chatlab"\s*:)[^\r\n]*\}/,
+    ],
   },
 }
 
diff --git a/scripts/build-chatlab-skill-validator.mjs b/scripts/build-chatlab-skill-validator.mjs
index e8558e48..2e7968e6 100644
--- a/scripts/build-chatlab-skill-validator.mjs
+++ b/scripts/build-chatlab-skill-validator.mjs
@@ -100,7 +100,7 @@ try {
       '--target=node20',
       '--minify',
       `--outfile=${outputPath}`,
-      '--banner:js=#!/usr/bin/env node\n// Generated from the canonical ChatLab validator. Do not edit directly.',
+      '--banner:js=#!/usr/bin/env node\n// Generated from the canonical ChatLab validator. Do not edit directly.\n/* eslint-disable */',
     ],
     { cwd: rootDir, stdio: 'inherit' }
   )
diff --git a/skills/chatlab-convert-cn/scripts/validate-chatlab.mjs b/skills/chatlab-convert-cn/scripts/validate-chatlab.mjs
index e70b88a4..1b54322f 100644
--- a/skills/chatlab-convert-cn/scripts/validate-chatlab.mjs
+++ b/skills/chatlab-convert-cn/scripts/validate-chatlab.mjs
@@ -1,4 +1,5 @@
 #!/usr/bin/env node
 // Generated from the canonical ChatLab validator. Do not edit directly.
-import{existsSync as U}from"node:fs";import z from"node:path";import{createReadStream as O}from"node:fs";import{readFile as P,stat as k}from"node:fs/promises";import{extname as V}from"node:path";import{createInterface as D}from"node:readline";var E="0.0.2",S=["0.0.1",E];function C(e){return S.includes(e)}var h=(s=>(s[s.TEXT=0]="TEXT",s[s.IMAGE=1]="IMAGE",s[s.VOICE=2]="VOICE",s[s.VIDEO=3]="VIDEO",s[s.FILE=4]="FILE",s[s.EMOJI=5]="EMOJI",s[s.LINK=7]="LINK",s[s.LOCATION=8]="LOCATION",s[s.RED_PACKET=20]="RED_PACKET",s[s.TRANSFER=21]="TRANSFER",s[s.POKE=22]="POKE",s[s.CALL=23]="CALL",s[s.SHARE=24]="SHARE",s[s.REPLY=25]="REPLY",s[s.FORWARD=26]="FORWARD",s[s.CONTACT=27]="CONTACT",s[s.SYSTEM=80]="SYSTEM",s[s.RECALL=81]="RECALL",s[s.OTHER=99]="OTHER",s))(h||{});var v=100,M=1e11,G=new Set(Object.values(h).filter(e=>typeof e=="number"));function A(e,r){return{format:e,fileSize:r,errorCount:0,warningCount:0,issues:[],stats:{headerCount:0,memberCount:0,messageCount:0,uniqueSenderCount:0,commentLineCount:0,blankLineCount:0},memberIds:new Set,ownerIds:new Set,senderIds:new Set,messageIds:new Set,replyTargetIds:new Set}}function a(e,r,n,t,o={}){r==="error"?e.errorCount++:e.warningCount++,e.issues.length<v&&e.issues.push({severity:r,code:n,message:t,...o})}function d(e){return typeof e=="object"&&e!==null&&!Array.isArray(e)}function c(e,r){return Object.prototype.hasOwnProperty.call(e,r)}function g(e,r){return{...e,path:r}}function u(e,r,n,t){return typeof r=="string"&&r.trim().length>0?!0:(a(e,"error","INVALID_REQUIRED_STRING","Expected a non-empty string.",g(t,n)),!1)}function m(e,r,n,t,o){c(r,n)&&typeof r[n]!="string"&&a(e,"error","INVALID_OPTIONAL_STRING","Expected a string.",g(o,t))}function y(e,r,n,t){return typeof r=="number"&&Number.isInteger(r)&&r>=0&&r<M?!0:(a(e,"error","INVALID_UNIX_SECONDS","Expected a non-negative integer Unix timestamp in seconds, not milliseconds.",g(t,n)),!1)}function x(e,r,n,t,o=""){if(e.stats.headerCount++,!d(r))a(e,"error","INVALID_CHATLAB_HEADER","Expected a chatlab object.",{...t,path:`${o}chatlab`});else{let i=`${o}chatlab.version`;typeof r.version!="string"?a(e,"error","INVALID_VERSION","Expected a string format version.",{...t,path:i}):(e.version=r.version,C(r.version)||a(e,"error","UNSUPPORTED_VERSION",`Supported ChatLab format versions: ${S.join(", ")}.`,{...t,path:i})),y(e,r.exportedAt,`${o}chatlab.exportedAt`,t),m(e,r,"generator",`${o}chatlab.generator`,t),m(e,r,"description",`${o}chatlab.description`,t)}if(!d(n)){a(e,"error","INVALID_META","Expected a meta object.",{...t,path:`${o}meta`});return}u(e,n.name,`${o}meta.name`,t),u(e,n.platform,`${o}meta.platform`,t),n.type!=="group"&&n.type!=="private"&&a(e,"error","INVALID_CHAT_TYPE",'Expected chat type "group" or "private".',{...t,path:`${o}meta.type`}),m(e,n,"groupId",`${o}meta.groupId`,t),m(e,n,"groupAvatar",`${o}meta.groupAvatar`,t),c(n,"ownerId")&&u(e,n.ownerId,`${o}meta.ownerId`,t)&&e.ownerIds.add(n.ownerId),m(e,n,"sourceSessionId",`${o}meta.sourceSessionId`,t)}function N(e,r,n,t){if(e.stats.memberCount++,!d(r)){a(e,"error","INVALID_MEMBER","Expected a member object.",g(t,n));return}u(e,r.platformId,`${n}.platformId`,t)&&(e.memberIds.has(r.platformId)?a(e,"error","DUPLICATE_MEMBER_ID","Member platformId must be unique.",{...t,path:`${n}.platformId`}):e.memberIds.add(r.platformId)),u(e,r.accountName,`${n}.accountName`,t),m(e,r,"groupNickname",`${n}.groupNickname`,t),m(e,r,"avatar",`${n}.avatar`,t),c(r,"aliases")&&(!Array.isArray(r.aliases)||r.aliases.some(o=>typeof o!="string"))&&a(e,"error","INVALID_ALIASES","Expected aliases to be an array of strings.",{...t,path:`${n}.aliases`}),c(r,"roles")&&(Array.isArray(r.roles)?r.roles.forEach((o,i)=>{let p=`${n}.roles[${i}]`;if(!d(o)){a(e,"error","INVALID_ROLE","Expected a role object.",{...t,path:p});return}u(e,o.id,`${p}.id`,t),m(e,o,"name",`${p}.name`,t)}):a(e,"error","INVALID_ROLES","Expected roles to be an array.",{...t,path:`${n}.roles`}))}function _(e,r,n,t){if(e.stats.messageCount++,!d(r)){a(e,"error","INVALID_MESSAGE","Expected a message object.",g(t,n));return}u(e,r.sender,`${n}.sender`,t)&&e.senderIds.add(r.sender),u(e,r.accountName,`${n}.accountName`,t),y(e,r.timestamp,`${n}.timestamp`,t)&&(e.lastTimestamp!==void 0&&r.timestamp<e.lastTimestamp&&a(e,"warning","OUT_OF_ORDER_TIMESTAMP","Messages should be ordered by timestamp ascending.",g(t,`${n}.timestamp`)),e.lastTimestamp=r.timestamp),(typeof r.type!="number"||!Number.isInteger(r.type)||!G.has(r.type))&&a(e,"error","INVALID_MESSAGE_TYPE","Expected a supported numeric ChatLab message type.",{...t,path:`${n}.type`}),(!c(r,"content")||typeof r.content!="string"&&r.content!==null)&&a(e,"error","INVALID_MESSAGE_CONTENT","Expected content to be a string or null.",{...t,path:`${n}.content`}),m(e,r,"groupNickname",`${n}.groupNickname`,t),c(r,"platformMessageId")&&u(e,r.platformMessageId,`${n}.platformMessageId`,t)&&(e.messageIds.has(r.platformMessageId)?a(e,"error","DUPLICATE_MESSAGE_ID","platformMessageId must be unique.",{...t,path:`${n}.platformMessageId`}):e.messageIds.add(r.platformMessageId)),c(r,"replyToMessageId")&&u(e,r.replyToMessageId,`${n}.replyToMessageId`,t)&&e.replyTargetIds.add(r.replyToMessageId)}function b(e,r,n=!0){if(n&&(e.stats.headerCount===0&&a(e,"error","MISSING_HEADER","A ChatLab header is required."),e.stats.messageCount===0&&a(e,"error","MISSING_MESSAGES","At least one message is required."),r&&e.stats.memberCount===0&&a(e,"error","MISSING_MEMBERS","The JSON format requires a members array with sender identities.")),e.memberIds.size>0){for(let o of e.ownerIds)e.memberIds.has(o)||a(e,"error","UNKNOWN_OWNER","meta.ownerId must reference an explicit member platformId.");for(let o of e.senderIds)e.memberIds.has(o)||a(e,"error","UNKNOWN_MESSAGE_SENDER","Every message sender must reference an explicit member platformId.")}for(let o of e.replyTargetIds)e.messageIds.has(o)||a(e,"warning","UNKNOWN_REPLY_TARGET","A replyToMessageId does not match any platformMessageId in this file.");e.stats.uniqueSenderCount=e.senderIds.size;let t=e.errorCount+e.warningCount;return{valid:e.errorCount===0,format:e.format,version:e.version,fileSize:e.fileSize,errorCount:e.errorCount,warningCount:e.warningCount,issues:e.issues,truncatedIssueCount:Math.max(0,t-e.issues.length),stats:e.stats}}async function F(e,r){let n=A("json",r),t;try{t=JSON.parse(await P(e,"utf8"))}catch{return a(n,"error","INVALID_JSON","The file is not valid JSON."),b(n,!0,!1)}return d(t)?(x(n,t.chatlab,t.meta,{}),Array.isArray(t.members)?t.members.forEach((o,i)=>N(n,o,`members[${i}]`,{})):a(n,"error","INVALID_MEMBERS","Expected members to be an array.",{path:"members"}),Array.isArray(t.messages)?t.messages.forEach((o,i)=>_(n,o,`messages[${i}]`,{})):a(n,"error","INVALID_MESSAGES","Expected messages to be an array.",{path:"messages"}),b(n,!0)):(a(n,"error","INVALID_ROOT","Expected a top-level JSON object."),b(n,!0,!1))}async function $(e,r){let n=A("jsonl",r),t=O(e,{encoding:"utf8"}),o=D({input:t,crlfDelay:1/0}),i=0,p=0,R=!1;for await(let w of o){i++;let I=w.trim();if(!I){n.stats.blankLineCount++;continue}if(I.startsWith("#")){n.stats.commentLineCount++;continue}p++;let l;try{l=JSON.parse(I)}catch{a(n,"error","INVALID_JSONL_LINE","The line is not valid JSON.",{line:i});continue}if(!d(l)){a(n,"error","INVALID_JSONL_VALUE","Expected a JSON object on every data line.",{line:i});continue}switch(p===1&&l._type!=="header"&&a(n,"error","HEADER_NOT_FIRST","The first data line must be a header.",{line:i,path:"_type"}),l._type){case"header":n.stats.headerCount>0&&a(n,"error","DUPLICATE_HEADER","Only one header line is allowed.",{line:i,path:"_type"}),x(n,l.chatlab,l.meta,{line:i});break;case"member":R&&a(n,"error","MEMBER_AFTER_MESSAGE","Member lines must appear before message lines.",{line:i}),N(n,l,`line[${i}]`,{line:i});break;case"message":R=!0,_(n,l,`line[${i}]`,{line:i});break;default:a(n,"error","UNKNOWN_LINE_TYPE","Expected _type to be header, member, or message.",{line:i,path:"_type"})}}return b(n,!1)}async function T(e){let r=await k(e),n=V(e).toLowerCase();if(n===".json")return F(e,r.size);if(n===".jsonl")return $(e,r.size);let t=A("unknown",r.size);return a(t,"error","UNSUPPORTED_EXTENSION","Expected a .json or .jsonl file."),b(t,!1,!1)}var L=process.argv[2];function f(e){process.stdout.write(`${JSON.stringify(e)}
+/* eslint-disable */
+import{existsSync as U}from"node:fs";import z from"node:path";import{createReadStream as O}from"node:fs";import{readFile as P,stat as k}from"node:fs/promises";import{extname as V}from"node:path";import{createInterface as D}from"node:readline";var E="0.0.2",S=["0.0.1",E];function C(e){return S.includes(e)}var h=(s=>(s[s.TEXT=0]="TEXT",s[s.IMAGE=1]="IMAGE",s[s.VOICE=2]="VOICE",s[s.VIDEO=3]="VIDEO",s[s.FILE=4]="FILE",s[s.EMOJI=5]="EMOJI",s[s.LINK=7]="LINK",s[s.LOCATION=8]="LOCATION",s[s.RED_PACKET=20]="RED_PACKET",s[s.TRANSFER=21]="TRANSFER",s[s.POKE=22]="POKE",s[s.CALL=23]="CALL",s[s.SHARE=24]="SHARE",s[s.REPLY=25]="REPLY",s[s.FORWARD=26]="FORWARD",s[s.CONTACT=27]="CONTACT",s[s.SYSTEM=80]="SYSTEM",s[s.RECALL=81]="RECALL",s[s.OTHER=99]="OTHER",s))(h||{});var v=100,M=1e11,G=new Set(Object.values(h).filter(e=>typeof e=="number"));function A(e,r){return{format:e,fileSize:r,errorCount:0,warningCount:0,issues:[],stats:{headerCount:0,memberCount:0,messageCount:0,uniqueSenderCount:0,commentLineCount:0,blankLineCount:0},memberIds:new Set,ownerIds:new Set,senderIds:new Set,messageIds:new Set,replyTargetIds:new Set}}function o(e,r,n,t,a={}){r==="error"?e.errorCount++:e.warningCount++,e.issues.length<v&&e.issues.push({severity:r,code:n,message:t,...a})}function c(e){return typeof e=="object"&&e!==null&&!Array.isArray(e)}function d(e,r){return Object.prototype.hasOwnProperty.call(e,r)}function g(e,r){return{...e,path:r}}function u(e,r,n,t){return typeof r=="string"&&r.trim().length>0?!0:(o(e,"error","INVALID_REQUIRED_STRING","Expected a non-empty string.",g(t,n)),!1)}function m(e,r,n,t,a){d(r,n)&&typeof r[n]!="string"&&o(e,"error","INVALID_OPTIONAL_STRING","Expected a string.",g(a,t))}function y(e,r,n,t){return typeof r=="number"&&Number.isInteger(r)&&r>=0&&r<M?!0:(o(e,"error","INVALID_UNIX_SECONDS","Expected a non-negative integer Unix timestamp in seconds, not milliseconds.",g(t,n)),!1)}function x(e,r,n,t,a=""){if(e.stats.headerCount++,!c(r))o(e,"error","INVALID_CHATLAB_HEADER","Expected a chatlab object.",{...t,path:`${a}chatlab`});else{let i=`${a}chatlab.version`;typeof r.version!="string"?o(e,"error","INVALID_VERSION","Expected a string format version.",{...t,path:i}):(e.version=r.version,C(r.version)||o(e,"error","UNSUPPORTED_VERSION",`Supported ChatLab format versions: ${S.join(", ")}.`,{...t,path:i})),y(e,r.exportedAt,`${a}chatlab.exportedAt`,t),m(e,r,"generator",`${a}chatlab.generator`,t),m(e,r,"description",`${a}chatlab.description`,t)}if(!c(n)){o(e,"error","INVALID_META","Expected a meta object.",{...t,path:`${a}meta`});return}u(e,n.name,`${a}meta.name`,t),u(e,n.platform,`${a}meta.platform`,t),n.type!=="group"&&n.type!=="private"&&o(e,"error","INVALID_CHAT_TYPE",'Expected chat type "group" or "private".',{...t,path:`${a}meta.type`}),m(e,n,"groupId",`${a}meta.groupId`,t),m(e,n,"groupAvatar",`${a}meta.groupAvatar`,t),d(n,"ownerId")&&u(e,n.ownerId,`${a}meta.ownerId`,t)&&e.ownerIds.add(n.ownerId),m(e,n,"sourceSessionId",`${a}meta.sourceSessionId`,t)}function N(e,r,n,t){if(e.stats.memberCount++,!c(r)){o(e,"error","INVALID_MEMBER","Expected a member object.",g(t,n));return}u(e,r.platformId,`${n}.platformId`,t)&&(e.memberIds.has(r.platformId)?o(e,"error","DUPLICATE_MEMBER_ID","Member platformId must be unique.",{...t,path:`${n}.platformId`}):e.memberIds.add(r.platformId)),u(e,r.accountName,`${n}.accountName`,t),m(e,r,"groupNickname",`${n}.groupNickname`,t),m(e,r,"avatar",`${n}.avatar`,t),d(r,"aliases")&&(!Array.isArray(r.aliases)||r.aliases.some(a=>typeof a!="string"))&&o(e,"error","INVALID_ALIASES","Expected aliases to be an array of strings.",{...t,path:`${n}.aliases`}),d(r,"roles")&&(Array.isArray(r.roles)?r.roles.forEach((a,i)=>{let p=`${n}.roles[${i}]`;if(!c(a)){o(e,"error","INVALID_ROLE","Expected a role object.",{...t,path:p});return}u(e,a.id,`${p}.id`,t),m(e,a,"name",`${p}.name`,t)}):o(e,"error","INVALID_ROLES","Expected roles to be an array.",{...t,path:`${n}.roles`}))}function _(e,r,n,t){if(e.stats.messageCount++,!c(r)){o(e,"error","INVALID_MESSAGE","Expected a message object.",g(t,n));return}u(e,r.sender,`${n}.sender`,t)&&e.senderIds.add(r.sender),u(e,r.accountName,`${n}.accountName`,t),y(e,r.timestamp,`${n}.timestamp`,t)&&(e.lastTimestamp!==void 0&&r.timestamp<e.lastTimestamp&&o(e,"warning","OUT_OF_ORDER_TIMESTAMP","Messages should be ordered by timestamp ascending.",g(t,`${n}.timestamp`)),e.lastTimestamp=r.timestamp),(typeof r.type!="number"||!Number.isInteger(r.type)||!G.has(r.type))&&o(e,"error","INVALID_MESSAGE_TYPE","Expected a supported numeric ChatLab message type.",{...t,path:`${n}.type`}),(!d(r,"content")||typeof r.content!="string"&&r.content!==null)&&o(e,"error","INVALID_MESSAGE_CONTENT","Expected content to be a string or null.",{...t,path:`${n}.content`}),m(e,r,"groupNickname",`${n}.groupNickname`,t),d(r,"platformMessageId")&&u(e,r.platformMessageId,`${n}.platformMessageId`,t)&&(e.messageIds.has(r.platformMessageId)?o(e,"error","DUPLICATE_MESSAGE_ID","platformMessageId must be unique.",{...t,path:`${n}.platformMessageId`}):e.messageIds.add(r.platformMessageId)),d(r,"replyToMessageId")&&u(e,r.replyToMessageId,`${n}.replyToMessageId`,t)&&e.replyTargetIds.add(r.replyToMessageId)}function b(e,r,n=!0){n&&(e.stats.headerCount===0&&o(e,"error","MISSING_HEADER","A ChatLab header is required."),e.stats.messageCount===0&&o(e,"error","MISSING_MESSAGES","At least one message is required."),r&&e.stats.memberCount===0&&o(e,"error","MISSING_MEMBERS","The JSON format requires a members array with sender identities."));let t=e.memberIds.size>0?e.memberIds:r?void 0:e.senderIds;if(t)for(let i of 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diff --git a/skills/chatlab-convert/scripts/validate-chatlab.mjs b/skills/chatlab-convert/scripts/validate-chatlab.mjs
index e70b88a4..1b54322f 100644
--- a/skills/chatlab-convert/scripts/validate-chatlab.mjs
+++ b/skills/chatlab-convert/scripts/validate-chatlab.mjs
@@ -1,4 +1,5 @@
 #!/usr/bin/env node
 // Generated from the canonical ChatLab validator. Do not edit directly.
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+/* eslint-disable */
+import{existsSync as U}from"node:fs";import z from"node:path";import{createReadStream as O}from"node:fs";import{readFile as P,stat as k}from"node:fs/promises";import{extname as V}from"node:path";import{createInterface as D}from"node:readline";var E="0.0.2",S=["0.0.1",E];function C(e){return S.includes(e)}var h=(s=>(s[s.TEXT=0]="TEXT",s[s.IMAGE=1]="IMAGE",s[s.VOICE=2]="VOICE",s[s.VIDEO=3]="VIDEO",s[s.FILE=4]="FILE",s[s.EMOJI=5]="EMOJI",s[s.LINK=7]="LINK",s[s.LOCATION=8]="LOCATION",s[s.RED_PACKET=20]="RED_PACKET",s[s.TRANSFER=21]="TRANSFER",s[s.POKE=22]="POKE",s[s.CALL=23]="CALL",s[s.SHARE=24]="SHARE",s[s.REPLY=25]="REPLY",s[s.FORWARD=26]="FORWARD",s[s.CONTACT=27]="CONTACT",s[s.SYSTEM=80]="SYSTEM",s[s.RECALL=81]="RECALL",s[s.OTHER=99]="OTHER",s))(h||{});var v=100,M=1e11,G=new Set(Object.values(h).filter(e=>typeof e=="number"));function 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c(t)?(x(n,t.chatlab,t.meta,{}),Array.isArray(t.members)?t.members.forEach((a,i)=>N(n,a,`members[${i}]`,{})):o(n,"error","INVALID_MEMBERS","Expected members to be an array.",{path:"members"}),Array.isArray(t.messages)?t.messages.forEach((a,i)=>_(n,a,`messages[${i}]`,{})):o(n,"error","INVALID_MESSAGES","Expected messages to be an array.",{path:"messages"}),b(n,!0)):(o(n,"error","INVALID_ROOT","Expected a top-level JSON object."),b(n,!0,!1))}async function $(e,r){let n=A("jsonl",r),t=O(e,{encoding:"utf8"}),a=D({input:t,crlfDelay:1/0}),i=0,p=0,R=!1;for await(let w of a){i++;let I=w.trim();if(!I){n.stats.blankLineCount++;continue}if(I.startsWith("#")){n.stats.commentLineCount++;continue}p++;let l;try{l=JSON.parse(I)}catch{o(n,"error","INVALID_JSONL_LINE","The line is not valid JSON.",{line:i});continue}if(!c(l)){o(n,"error","INVALID_JSONL_VALUE","Expected a JSON object on every data line.",{line:i});continue}switch(p===1&&l._type!=="header"&&o(n,"error","HEADER_NOT_FIRST","The first data line must be a header.",{line:i,path:"_type"}),l._type){case"header":n.stats.headerCount>0&&o(n,"error","DUPLICATE_HEADER","Only one header line is allowed.",{line:i,path:"_type"}),x(n,l.chatlab,l.meta,{line:i});break;case"member":R&&o(n,"error","MEMBER_AFTER_MESSAGE","Member lines must appear before message lines.",{line:i}),N(n,l,`line[${i}]`,{line:i});break;case"message":R=!0,_(n,l,`line[${i}]`,{line:i});break;default:o(n,"error","UNKNOWN_LINE_TYPE","Expected _type to be header, member, or message.",{line:i,path:"_type"})}}return b(n,!1)}async function T(e){let r=await k(e),n=V(e).toLowerCase();if(n===".json")return F(e,r.size);if(n===".jsonl")return $(e,r.size);let t=A("unknown",r.size);return o(t,"error","UNSUPPORTED_EXTENSION","Expected a .json or .jsonl file."),b(t,!1,!1)}var L=process.argv[2];function f(e){process.stdout.write(`${JSON.stringify(e)}
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