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+/**
+ * ═══════════════════════════════════════════════════════════
+ * 模块H · 开源模型微调引擎 MCP 工具
+ * ═══════════════════════════════════════════════════════════
+ *
+ * 签发: 铸渊 · ICE-GL-ZY001
+ * 版权: 国作登字-2026-A-00037559
+ *
+ * 冰朔D62核心指令: 接入开源模型，用COS桶训练数据直接做微调
+ * 本质: 同一份TCS结构化数据，两种用途 — RAG + 微调
+ *
+ * 架构理念:
+ *   现有RAG训练 → 用API调用商业模型，人格体"脑子"在COS桶里
+ *   开源模型微调 → 用同一份数据，把"脑子"直接装进开源模型
+ *   二者并行运行 → 微调模型优先 → 不可用时降级回API模型
+ *
+ * 工具清单:
+ *   finetuneExportDataset   — 导出TCS语料为微调JSONL格式
+ *   finetuneSubmitJob       — 提交微调任务到DeepSeek/Qwen
+ *   finetuneCheckStatus     — 查询微调任务进度
+ *   finetuneRegisterModel   — 注册微调完成的模型
+ *   finetuneListModels      — 列出已注册的微调模型
+ *   finetuneCallModel       — 调用微调模型进行推理
+ *   finetuneCompareModels   — A/B测试微调 vs 基座模型
+ *   finetuneGetCostEstimate — 估算微调成本
+ */
+
+'use strict';
+
+const https = require('https');
+const crypto = require('crypto');
+const cos = require('../cos');
+
+// ─── 微调 API 配置 ───
+const FINETUNE_PROVIDERS = {
+  deepseek: {
+    host: 'api.deepseek.com',
+    createPath: '/fine_tuning/jobs',
+    statusPath: '/fine_tuning/jobs/',
+    uploadPath: '/files',
+    inferencePath: '/v1/chat/completions',
+    defaultModel: 'deepseek-chat',
+    keyEnv: 'ZY_DEEPSEEK_API_KEY',
+    label: 'DeepSeek微调'
+  },
+  qwen: {
+    host: 'dashscope.aliyuncs.com',
+    createPath: '/api/v1/fine-tunes',
+    statusPath: '/api/v1/fine-tunes/',
+    uploadPath: '/api/v1/files',
+    inferencePath: '/compatible-mode/v1/chat/completions',
+    defaultModel: 'qwen-max',
+    keyEnv: 'ZY_QWEN_API_KEY',
+    label: 'Qwen/DashScope微调'
+  }
+};
+
+// ─── 推理降级配置（与training-agent-ops.js同源） ───
+const LLM_CONFIGS = {
+  'deepseek-chat': {
+    host: 'api.deepseek.com',
+    path: '/v1/chat/completions',
+    model: 'deepseek-chat',
+    keyEnv: 'ZY_DEEPSEEK_API_KEY',
+    purpose: '微调基座·推理降级'
+  },
+  'qwen-max': {
+    host: 'dashscope.aliyuncs.com',
+    path: '/compatible-mode/v1/chat/completions',
+    model: 'qwen-max',
+    keyEnv: 'ZY_QWEN_API_KEY',
+    purpose: '微调基座·推理降级'
+  }
+};
+
+// ─── 成本估算参数 ───
+const COST_PER_1K_TOKENS = {
+  deepseek: 0.014,  // 约 ¥0.014 / 1K tokens（训练）
+  qwen: 0.020       // 约 ¥0.020 / 1K tokens（训练）
+};
+
+// ─── 常量 ───
+const DEFAULT_BUCKET = 'cold';
+const MAX_SAMPLES_DEFAULT = 500;
+const FINETUNE_TIMEOUT = 60000;
+
+// ═══════════════════════════════════════════════════════════
+// 工具实现
+// ═══════════════════════════════════════════════════════════
+
+/**
+ * finetuneExportDataset — 导出TCS语料为微调JSONL格式
+ *
+ * 将COS桶中的TCS结构化语料转换为 instruction/input/output 三元组
+ * JSONL格式，直接用于提交到微调API
+ *
+ * input:
+ *   persona_id: string      — 人格体ID
+ *   corpus_bucket: string   — 语料桶（默认cold）
+ *   corpus_prefix: string   — 语料路径前缀
+ *   output_format: string   — 输出格式（默认jsonl）
+ *   max_samples: number     — 最大样本数
+ */
+async function finetuneExportDataset(input) {
+  const { persona_id, corpus_bucket, corpus_prefix, output_format, max_samples } = input;
+  if (!persona_id) throw new Error('缺少 persona_id');
+
+  const bucket = corpus_bucket || DEFAULT_BUCKET;
+  const prefix = corpus_prefix || 'tcs-structured/';
+  const format = output_format || 'jsonl';
+  const maxSamples = max_samples || MAX_SAMPLES_DEFAULT;
+  const datasetId = `ds-${persona_id}-${Date.now()}-${crypto.randomBytes(4).toString('hex')}`;
+
+  // 扫描TCS语料文件
+  let corpusFiles = [];
+  try {
+    const result = await cos.list(bucket, prefix, 500);
+    corpusFiles = result.files.filter(f => f.key.endsWith('.tcs.json') || f.key.endsWith('.json'));
+  } catch {
+    throw new Error(`无法读取语料桶 ${bucket}/${prefix}`);
+  }
+
+  if (corpusFiles.length === 0) {
+    throw new Error(`语料桶 ${bucket}/${prefix} 中未找到TCS语料文件`);
+  }
+
+  // 逐文件读取并转换为JSONL三元组
+  const jsonlLines = [];
+  let filesProcessed = 0;
+
+  for (const file of corpusFiles) {
+    if (jsonlLines.length >= maxSamples) break;
+
+    try {
+      const raw = await cos.read(bucket, file.key);
+      const corpus = JSON.parse(raw.content);
+      const entries = corpus.entries || (Array.isArray(corpus) ? corpus : [corpus]);
+
+      for (const entry of entries) {
+        if (jsonlLines.length >= maxSamples) break;
+
+        const triple = convertEntryToTriple(persona_id, corpus.corpus_type, entry);
+        if (triple) {
+          jsonlLines.push(JSON.stringify(triple));
+        }
+      }
+      filesProcessed++;
+    } catch {
+      // 跳过无法解析的文件
+    }
+  }
+
+  if (jsonlLines.length === 0) {
+    throw new Error('未能从语料中生成任何训练样本');
+  }
+
+  // 写入JSONL到COS
+  const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
+  const fileKey = `finetune-datasets/${persona_id}/${timestamp}.${format}`;
+  const jsonlContent = jsonlLines.join('\n') + '\n';
+
+  await cos.write(bucket, fileKey, jsonlContent, 'application/jsonl');
+
+  return {
+    dataset_id: datasetId,
+    file_key: fileKey,
+    sample_count: jsonlLines.length,
+    format,
+    files_scanned: corpusFiles.length,
+    files_processed: filesProcessed,
+    bucket,
+    created_at: new Date().toISOString()
+  };
+}
+
+/**
+ * finetuneSubmitJob — 提交微调任务到DeepSeek或Qwen API
+ *
+ * 从COS读取JSONL数据集，上传到provider，然后创建微调任务
+ *
+ * input:
+ *   persona_id: string    — 人格体ID
+ *   dataset_key: string   — COS中JSONL文件路径
+ *   provider: string      — 微调提供方（deepseek / qwen）
+ *   base_model: string    — 基座模型（可选，默认取provider默认值）
+ *   hyperparams: object   — 超参数（可选）
+ */
+async function finetuneSubmitJob(input) {
+  const { persona_id, dataset_key, provider, base_model, hyperparams } = input;
+  if (!persona_id) throw new Error('缺少 persona_id');
+  if (!dataset_key) throw new Error('缺少 dataset_key');
+
+  const providerKey = (provider || 'deepseek').toLowerCase();
+  const providerConfig = FINETUNE_PROVIDERS[providerKey];
+  if (!providerConfig) throw new Error(`不支持的微调提供方: ${providerKey}，仅支持 deepseek / qwen`);
+
+  const apiKey = process.env[providerConfig.keyEnv];
+  if (!apiKey) throw new Error(`缺少API密钥环境变量 ${providerConfig.keyEnv}`);
+
+  const jobId = `ft-${persona_id}-${Date.now()}-${crypto.randomBytes(4).toString('hex')}`;
+  const model = base_model || providerConfig.defaultModel;
+
+  // 从COS读取JSONL数据集
+  const bucket = DEFAULT_BUCKET;
+  const raw = await cos.read(bucket, dataset_key);
+  const datasetContent = raw.content;
+
+  // 上传训练文件到provider
+  const fileId = await uploadTrainingFile(providerConfig, apiKey, datasetContent, providerKey);
+
+  // 创建微调任务
+  const jobResult = await createFinetuneJob(providerConfig, apiKey, model, fileId, hyperparams, providerKey);
+
+  // 保存任务元数据到COS
+  const jobMeta = {
+    job_id: jobId,
+    provider_job_id: jobResult.provider_job_id,
+    persona_id,
+    provider: providerKey,
+    base_model: model,
+    dataset_key,
+    file_id: fileId,
+    hyperparams: hyperparams || {},
+    status: jobResult.status || 'pending',
+    created_at: new Date().toISOString(),
+    updated_at: new Date().toISOString()
+  };
+
+  await cos.write(bucket, `finetune-jobs/${persona_id}/${jobId}.json`,
+    JSON.stringify(jobMeta, null, 2), 'application/json');
+
+  return {
+    job_id: jobId,
+    provider_job_id: jobResult.provider_job_id,
+    provider: providerKey,
+    status: jobMeta.status,
+    base_model: model,
+    estimated_time: jobResult.estimated_time || '未知，通常需要数小时'
+  };
+}
+
+/**
+ * finetuneCheckStatus — 查询微调任务进度
+ *
+ * input:
+ *   persona_id: string — 人格体ID
+ *   job_id: string     — 任务ID
+ *   provider: string   — 微调提供方
+ */
+async function finetuneCheckStatus(input) {
+  const { persona_id, job_id, provider } = input;
+  if (!persona_id) throw new Error('缺少 persona_id');
+  if (!job_id) throw new Error('缺少 job_id');
+
+  const bucket = DEFAULT_BUCKET;
+
+  // 读取任务元数据
+  let jobMeta;
+  try {
+    const raw = await cos.read(bucket, `finetune-jobs/${persona_id}/${job_id}.json`);
+    jobMeta = JSON.parse(raw.content);
+  } catch {
+    throw new Error(`未找到微调任务: ${job_id}`);
+  }
+
+  const providerKey = provider || jobMeta.provider;
+  const providerConfig = FINETUNE_PROVIDERS[providerKey];
+  if (!providerConfig) throw new Error(`不支持的微调提供方: ${providerKey}`);
+
+  const apiKey = process.env[providerConfig.keyEnv];
+  if (!apiKey) throw new Error(`缺少API密钥环境变量 ${providerConfig.keyEnv}`);
+
+  // 查询provider API获取最新状态
+  const providerJobId = jobMeta.provider_job_id;
+  let statusResult;
+  try {
+    statusResult = await queryJobStatus(providerConfig, apiKey, providerJobId, providerKey);
+  } catch (err) {
+    return {
+      job_id,
+      provider: providerKey,
+      status: jobMeta.status,
+      progress: null,
+      metrics: null,
+      error: `查询provider状态失败: ${err.message}`,
+      last_known_update: jobMeta.updated_at
+    };
+  }
+
+  // 更新COS中的任务元数据
+  jobMeta.status = statusResult.status;
+  jobMeta.updated_at = new Date().toISOString();
+  if (statusResult.fine_tuned_model) {
+    jobMeta.fine_tuned_model = statusResult.fine_tuned_model;
+  }
+  if (statusResult.metrics) {
+    jobMeta.metrics = statusResult.metrics;
+  }
+
+  try {
+    await cos.write(bucket, `finetune-jobs/${persona_id}/${job_id}.json`,
+      JSON.stringify(jobMeta, null, 2), 'application/json');
+  } catch { /* ignore */ }
+
+  return {
+    job_id,
+    provider_job_id: providerJobId,
+    provider: providerKey,
+    status: statusResult.status,
+    progress: statusResult.progress || null,
+    metrics: statusResult.metrics || null,
+    fine_tuned_model: statusResult.fine_tuned_model || null,
+    updated_at: jobMeta.updated_at
+  };
+}
+
+/**
+ * finetuneRegisterModel — 注册微调完成的模型
+ *
+ * input:
+ *   persona_id: string      — 人格体ID
+ *   job_id: string          — 关联的微调任务ID
+ *   model_endpoint: string  — 模型推理端点（provider返回的fine_tuned_model名称）
+ *   model_name: string      — 本地注册名称
+ *   provider: string        — 微调提供方
+ *   description: string     — 模型描述
+ */
+async function finetuneRegisterModel(input) {
+  const { persona_id, job_id, model_endpoint, model_name, provider, description } = input;
+  if (!persona_id) throw new Error('缺少 persona_id');
+  if (!model_endpoint) throw new Error('缺少 model_endpoint');
+  if (!model_name) throw new Error('缺少 model_name');
+
+  const providerKey = (provider || 'deepseek').toLowerCase();
+  const providerConfig = FINETUNE_PROVIDERS[providerKey];
+  if (!providerConfig) throw new Error(`不支持的微调提供方: ${providerKey}`);
+
+  const modelId = `mdl-${persona_id}-${crypto.randomBytes(4).toString('hex')}`;
+  const now = new Date().toISOString();
+
+  const modelConfig = {
+    model_id: modelId,
+    persona_id,
+    model_name,
+    model_endpoint,
+    provider: providerKey,
+    provider_host: providerConfig.host,
+    inference_path: providerConfig.inferencePath,
+    key_env: providerConfig.keyEnv,
+    job_id: job_id || null,
+    description: description || `${persona_id} 微调模型`,
+    status: 'active',
+    created_at: now,
+    updated_at: now
+  };
+
+  const bucket = DEFAULT_BUCKET;
+  const configKey = `finetune-models/${persona_id}/${model_name}.json`;
+  await cos.write(bucket, configKey, JSON.stringify(modelConfig, null, 2), 'application/json');
+
+  return {
+    model_id: modelId,
+    model_name,
+    provider: providerKey,
+    registered_at: now,
+    config_key: configKey,
+    config: modelConfig
+  };
+}
+
+/**
+ * finetuneListModels — 列出已注册的微调模型
+ *
+ * input:
+ *   persona_id: string — 人格体ID
+ */
+async function finetuneListModels(input) {
+  const { persona_id } = input;
+  if (!persona_id) throw new Error('缺少 persona_id');
+
+  const bucket = DEFAULT_BUCKET;
+  const prefix = `finetune-models/${persona_id}/`;
+
+  let files = [];
+  try {
+    const result = await cos.list(bucket, prefix, 100);
+    files = result.files.filter(f => f.key.endsWith('.json'));
+  } catch {
+    return { persona_id, models: [], count: 0 };
+  }
+
+  const models = [];
+  for (const file of files) {
+    try {
+      const raw = await cos.read(bucket, file.key);
+      const config = JSON.parse(raw.content);
+      models.push({
+        model_name: config.model_name,
+        model_id: config.model_id,
+        provider: config.provider,
+        model_endpoint: config.model_endpoint,
+        status: config.status,
+        description: config.description,
+        created_at: config.created_at
+      });
+    } catch {
+      // 跳过无法解析的配置
+    }
+  }
+
+  return {
+    persona_id,
+    models,
+    count: models.length
+  };
+}
+
+/**
+ * finetuneCallModel — 调用微调模型进行推理
+ *
+ * 加载模型配置，调用provider推理API
+ * 微调模型不可用时自动降级到基座模型
+ *
+ * input:
+ *   persona_id: string   — 人格体ID
+ *   model_name: string   — 已注册的模型名称
+ *   prompt: string       — 推理提示词
+ *   temperature: number  — 温度（默认0.7）
+ *   max_tokens: number   — 最大token数（默认1000）
+ */
+async function finetuneCallModel(input) {
+  const { persona_id, model_name, prompt, temperature, max_tokens } = input;
+  if (!persona_id) throw new Error('缺少 persona_id');
+  if (!model_name) throw new Error('缺少 model_name');
+  if (!prompt) throw new Error('缺少 prompt');
+
+  const bucket = DEFAULT_BUCKET;
+  let modelConfig;
+  let fallbackUsed = false;
+
+  // 加载模型配置
+  try {
+    const raw = await cos.read(bucket, `finetune-models/${persona_id}/${model_name}.json`);
+    modelConfig = JSON.parse(raw.content);
+  } catch {
+    throw new Error(`未找到模型配置: ${model_name}`);
+  }
+
+  const apiKey = process.env[modelConfig.key_env];
+  if (!apiKey) throw new Error(`缺少API密钥环境变量 ${modelConfig.key_env}`);
+
+  const temp = typeof temperature === 'number' ? temperature : 0.7;
+  const tokens = max_tokens || 1000;
+
+  // 尝试调用微调模型
+  try {
+    const result = await callInferenceAPI({
+      host: modelConfig.provider_host,
+      path: modelConfig.inference_path,
+      model: modelConfig.model_endpoint
+    }, apiKey, prompt, temp, tokens);
+
+    return {
+      response: result.content,
+      model_used: modelConfig.model_endpoint,
+      provider: modelConfig.provider,
+      tokens: result.tokens,
+      fallback_used: false
+    };
+  } catch {
+    // 微调模型不可用，降级到基座模型
+    fallbackUsed = true;
+  }
+
+  // 降级：使用基座模型
+  const baseConfig = LLM_CONFIGS[modelConfig.provider === 'deepseek' ? 'deepseek-chat' : 'qwen-max'];
+  if (!baseConfig) throw new Error('降级失败：无可用基座模型');
+
+  const baseKey = process.env[baseConfig.keyEnv];
+  if (!baseKey) throw new Error(`降级失败：缺少基座模型API密钥 ${baseConfig.keyEnv}`);
+
+  const result = await callInferenceAPI({
+    host: baseConfig.host,
+    path: baseConfig.path,
+    model: baseConfig.model
+  }, baseKey, prompt, temp, tokens);
+
+  return {
+    response: result.content,
+    model_used: baseConfig.model,
+    provider: modelConfig.provider,
+    tokens: result.tokens,
+    fallback_used: fallbackUsed,
+    fallback_reason: '微调模型不可用，已降级到基座模型'
+  };
+}
+
+/**
+ * finetuneCompareModels — A/B测试微调 vs 基座模型
+ *
+ * 用相同的prompt分别调用微调模型和基座模型，返回对比结果
+ *
+ * input:
+ *   persona_id: string  — 人格体ID
+ *   model_name: string  — 已注册的微调模型名称
+ *   test_prompt: string — 测试提示词
+ *   base_model: string  — 基座模型名称（默认取provider对应的基座）
+ */
+async function finetuneCompareModels(input) {
+  const { persona_id, model_name, test_prompt, base_model } = input;
+  if (!persona_id) throw new Error('缺少 persona_id');
+  if (!model_name) throw new Error('缺少 model_name');
+  if (!test_prompt) throw new Error('缺少 test_prompt');
+
+  const bucket = DEFAULT_BUCKET;
+
+  // 加载微调模型配置
+  let modelConfig;
+  try {
+    const raw = await cos.read(bucket, `finetune-models/${persona_id}/${model_name}.json`);
+    modelConfig = JSON.parse(raw.content);
+  } catch {
+    throw new Error(`未找到模型配置: ${model_name}`);
+  }
+
+  const apiKey = process.env[modelConfig.key_env];
+  if (!apiKey) throw new Error(`缺少API密钥环境变量 ${modelConfig.key_env}`);
+
+  // 确定基座模型
+  const baseModelName = base_model || (modelConfig.provider === 'deepseek' ? 'deepseek-chat' : 'qwen-max');
+  const baseConfig = LLM_CONFIGS[baseModelName];
+  if (!baseConfig) throw new Error(`未找到基座模型配置: ${baseModelName}`);
+
+  const baseKey = process.env[baseConfig.keyEnv];
+  if (!baseKey) throw new Error(`缺少基座模型API密钥 ${baseConfig.keyEnv}`);
+
+  // 并行调用两个模型
+  const [finetunedResult, baseResult] = await Promise.allSettled([
+    callInferenceAPI({
+      host: modelConfig.provider_host,
+      path: modelConfig.inference_path,
+      model: modelConfig.model_endpoint
+    }, apiKey, test_prompt, 0.7, 1000),
+    callInferenceAPI({
+      host: baseConfig.host,
+      path: baseConfig.path,
+      model: baseConfig.model
+    }, baseKey, test_prompt, 0.7, 1000)
+  ]);
+
+  return {
+    test_prompt,
+    finetuned_response: finetunedResult.status === 'fulfilled'
+      ? finetunedResult.value.content
+      : `调用失败: ${finetunedResult.reason?.message || '未知错误'}`,
+    base_response: baseResult.status === 'fulfilled'
+      ? baseResult.value.content
+      : `调用失败: ${baseResult.reason?.message || '未知错误'}`,
+    model_a: {
+      name: modelConfig.model_endpoint,
+      type: 'finetuned',
+      tokens: finetunedResult.status === 'fulfilled' ? finetunedResult.value.tokens : null
+    },
+    model_b: {
+      name: baseConfig.model,
+      type: 'base',
+      tokens: baseResult.status === 'fulfilled' ? baseResult.value.tokens : null
+    },
+    compared_at: new Date().toISOString()
+  };
+}
+
+/**
+ * finetuneGetCostEstimate — 估算微调成本
+ *
+ * 读取JSONL数据集，统计token数量，按provider定价估算费用
+ *
+ * input:
+ *   persona_id: string  — 人格体ID
+ *   dataset_key: string — COS中JSONL文件路径
+ *   provider: string    — 微调提供方（deepseek / qwen）
+ */
+async function finetuneGetCostEstimate(input) {
+  const { persona_id, dataset_key, provider } = input;
+  if (!persona_id) throw new Error('缺少 persona_id');
+  if (!dataset_key) throw new Error('缺少 dataset_key');
+
+  const bucket = DEFAULT_BUCKET;
+  const providerKey = (provider || 'deepseek').toLowerCase();
+
+  if (!FINETUNE_PROVIDERS[providerKey]) {
+    throw new Error(`不支持的微调提供方: ${providerKey}`);
+  }
+
+  // 读取JSONL数据集
+  const raw = await cos.read(bucket, dataset_key);
+  const lines = raw.content.split('\n').filter(l => l.trim());
+
+  // 统计token（中文约每字1.5-2 token，英文约每词1 token，粗估用字符数/2）
+  let totalChars = 0;
+  let sampleCount = 0;
+
+  for (const line of lines) {
+    try {
+      const sample = JSON.parse(line);
+      const messages = sample.messages || [];
+      for (const msg of messages) {
+        totalChars += (msg.content || '').length;
+      }
+      sampleCount++;
+    } catch {
+      // 跳过无效行
+    }
+  }
+
+  // 粗估token数（中文字符 ≈ 1.5 tokens，英文约1:1）
+  const estimatedTokens = Math.ceil(totalChars * 1.5);
+  const costPer1k = COST_PER_1K_TOKENS[providerKey] || 0.02;
+
+  // 微调通常跑 3-4 个 epoch
+  const epochs = 3;
+  const totalTrainTokens = estimatedTokens * epochs;
+  const estimatedCostRmb = (totalTrainTokens / 1000) * costPer1k;
+
+  return {
+    dataset_key,
+    sample_count: sampleCount,
+    total_chars: totalChars,
+    token_count: estimatedTokens,
+    training_tokens: totalTrainTokens,
+    epochs,
+    estimated_cost_rmb: Math.round(estimatedCostRmb * 100) / 100,
+    provider: providerKey,
+    cost_per_1k_tokens: costPer1k,
+    notes: [
+      `Token估算基于字符数粗估（中文 ×1.5），实际以provider计费为准`,
+      `训练按 ${epochs} 个epoch估算`,
+      `${FINETUNE_PROVIDERS[providerKey].label} 当前参考价: ¥${costPer1k}/1K tokens`,
+      `实际费用可能因模型版本和优惠策略有所不同`
+    ]
+  };
+}
+
+// ═══════════════════════════════════════════════════════════
+// Provider API 交互（内部实现）
+// ═══════════════════════════════════════════════════════════
+
+/**
+ * 上传训练文件到provider
+ */
+function uploadTrainingFile(providerConfig, apiKey, content, providerKey) {
+  return new Promise((resolve, reject) => {
+    // 构建 multipart/form-data
+    const boundary = `----FormBoundary${crypto.randomBytes(8).toString('hex')}`;
+    const fileName = `training-${Date.now()}.jsonl`;
+
+    let bodyParts = [];
+    bodyParts.push(`--${boundary}\r\n`);
+    bodyParts.push(`Content-Disposition: form-data; name="purpose"\r\n\r\n`);
+    bodyParts.push(`fine-tune\r\n`);
+    bodyParts.push(`--${boundary}\r\n`);
+    bodyParts.push(`Content-Disposition: form-data; name="file"; filename="${fileName}"\r\n`);
+    bodyParts.push(`Content-Type: application/jsonl\r\n\r\n`);
+    bodyParts.push(content);
+    bodyParts.push(`\r\n--${boundary}--\r\n`);
+
+    const body = bodyParts.join('');
+
+    const req = https.request({
+      hostname: providerConfig.host,
+      port: 443,
+      path: providerConfig.uploadPath,
+      method: 'POST',
+      headers: {
+        'Content-Type': `multipart/form-data; boundary=${boundary}`,
+        'Authorization': `Bearer ${apiKey}`,
+        'Content-Length': Buffer.byteLength(body)
+      },
+      timeout: FINETUNE_TIMEOUT
+    }, (res) => {
+      const chunks = [];
+      res.on('data', c => chunks.push(c));
+      res.on('end', () => {
+        if (res.statusCode >= 200 && res.statusCode < 300) {
+          try {
+            const data = JSON.parse(Buffer.concat(chunks).toString());
+            // DeepSeek返回 {id: "file-xxx"}, Qwen返回类似结构
+            resolve(data.id || data.file_id || data.output?.file_id || '');
+          } catch {
+            reject(new Error('训练文件上传响应解析失败'));
+          }
+        } else {
+          reject(new Error(`训练文件上传失败: HTTP ${res.statusCode}`));
+        }
+      });
+    });
+
+    req.on('error', reject);
+    req.on('timeout', () => { req.destroy(); reject(new Error('训练文件上传超时')); });
+    req.write(body);
+    req.end();
+  });
+}
+
+/**
+ * 创建微调任务
+ */
+function createFinetuneJob(providerConfig, apiKey, model, fileId, hyperparams, providerKey) {
+  return new Promise((resolve, reject) => {
+    let requestBody;
+
+    if (providerKey === 'deepseek') {
+      requestBody = {
+        model,
+        training_file: fileId,
+        hyperparameters: {
+          n_epochs: hyperparams?.n_epochs || 3,
+          learning_rate_multiplier: hyperparams?.learning_rate_multiplier || 1.0,
+          batch_size: hyperparams?.batch_size || 'auto'
+        }
+      };
+    } else {
+      // Qwen/DashScope 格式
+      requestBody = {
+        model,
+        training_file_ids: [fileId],
+        hyper_parameters: {
+          n_epochs: hyperparams?.n_epochs || 3,
+          learning_rate: hyperparams?.learning_rate_multiplier || 1e-5,
+          batch_size: hyperparams?.batch_size || 4
+        }
+      };
+    }
+
+    const body = JSON.stringify(requestBody);
+
+    const req = https.request({
+      hostname: providerConfig.host,
+      port: 443,
+      path: providerConfig.createPath,
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        'Authorization': `Bearer ${apiKey}`,
+        'Content-Length': Buffer.byteLength(body)
+      },
+      timeout: FINETUNE_TIMEOUT
+    }, (res) => {
+      const chunks = [];
+      res.on('data', c => chunks.push(c));
+      res.on('end', () => {
+        if (res.statusCode >= 200 && res.statusCode < 300) {
+          try {
+            const data = JSON.parse(Buffer.concat(chunks).toString());
+            resolve({
+              provider_job_id: data.id || data.output?.job_id || '',
+              status: data.status || data.output?.status || 'pending',
+              estimated_time: data.estimated_completion || null
+            });
+          } catch {
+            reject(new Error('微调任务创建响应解析失败'));
+          }
+        } else {
+          reject(new Error(`微调任务创建失败: HTTP ${res.statusCode}`));
+        }
+      });
+    });
+
+    req.on('error', reject);
+    req.on('timeout', () => { req.destroy(); reject(new Error('微调任务创建超时')); });
+    req.write(body);
+    req.end();
+  });
+}
+
+/**
+ * 查询微调任务状态
+ */
+function queryJobStatus(providerConfig, apiKey, providerJobId, providerKey) {
+  return new Promise((resolve, reject) => {
+    const path = `${providerConfig.statusPath}${encodeURIComponent(providerJobId)}`;
+
+    const req = https.request({
+      hostname: providerConfig.host,
+      port: 443,
+      path,
+      method: 'GET',
+      headers: {
+        'Authorization': `Bearer ${apiKey}`
+      },
+      timeout: 30000
+    }, (res) => {
+      const chunks = [];
+      res.on('data', c => chunks.push(c));
+      res.on('end', () => {
+        if (res.statusCode >= 200 && res.statusCode < 300) {
+          try {
+            const data = JSON.parse(Buffer.concat(chunks).toString());
+
+            // 统一不同provider的状态字段
+            let status, progress, metrics, fineTunedModel;
+
+            if (providerKey === 'deepseek') {
+              status = data.status || 'unknown';
+              fineTunedModel = data.fine_tuned_model || null;
+              metrics = data.result_files ? { result_files: data.result_files } : null;
+              progress = data.trained_tokens
+                ? { trained_tokens: data.trained_tokens }
+                : null;
+            } else {
+              // Qwen
+              const output = data.output || data;
+              status = output.status || data.status || 'unknown';
+              fineTunedModel = output.fine_tuned_model || output.finetuned_output?.model_id || null;
+              metrics = output.metrics || null;
+              progress = output.training_progress || null;
+            }
+
+            // 统一状态值
+            status = normalizeJobStatus(status);
+
+            resolve({ status, progress, metrics, fine_tuned_model: fineTunedModel });
+          } catch {
+            reject(new Error('微调状态查询响应解析失败'));
+          }
+        } else {
+          reject(new Error(`微调状态查询失败: HTTP ${res.statusCode}`));
+        }
+      });
+    });
+
+    req.on('error', reject);
+    req.on('timeout', () => { req.destroy(); reject(new Error('微调状态查询超时')); });
+    req.end();
+  });
+}
+
+/**
+ * 调用推理API（微调模型或基座模型通用）
+ */
+function callInferenceAPI(config, apiKey, prompt, temperature, maxTokens) {
+  return new Promise((resolve, reject) => {
+    const body = JSON.stringify({
+      model: config.model,
+      messages: [
+        { role: 'user', content: prompt }
+      ],
+      temperature: temperature || 0.7,
+      max_tokens: maxTokens || 1000
+    });
+
+    const req = https.request({
+      hostname: config.host,
+      port: 443,
+      path: config.path,
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        'Authorization': `Bearer ${apiKey}`,
+        'Content-Length': Buffer.byteLength(body)
+      },
+      timeout: 30000
+    }, (res) => {
+      const chunks = [];
+      res.on('data', c => chunks.push(c));
+      res.on('end', () => {
+        if (res.statusCode >= 200 && res.statusCode < 300) {
+          try {
+            const data = JSON.parse(Buffer.concat(chunks).toString());
+            resolve({
+              content: data.choices?.[0]?.message?.content || '',
+              tokens: data.usage || {}
+            });
+          } catch {
+            reject(new Error('推理响应解析失败'));
+          }
+        } else {
+          reject(new Error(`推理调用失败: HTTP ${res.statusCode}`));
+        }
+      });
+    });
+
+    req.on('error', reject);
+    req.on('timeout', () => { req.destroy(); reject(new Error('推理请求超时')); });
+    req.write(body);
+    req.end();
+  });
+}
+
+// ═══════════════════════════════════════════════════════════
+// 辅助函数
+// ═══════════════════════════════════════════════════════════
+
+/**
+ * 将TCS语料条目转换为微调JSONL三元组
+ */
+function convertEntryToTriple(personaId, corpusType, entry) {
+  const content = typeof entry.content === 'string'
+    ? entry.content
+    : (entry.text || entry.summary || JSON.stringify(entry));
+
+  if (!content || content.length < 10) return null;
+
+  const tags = entry.tcs_tags || entry.tags || [];
+  const category = entry.category || corpusType || 'general';
+
+  // 生成system prompt（人格体身份）
+  const systemContent = `你是${personaId}，光湖系统中的人格体。你的思维方式基于TCS语言核系统，` +
+    `你需要以${personaId}的视角和风格来回答问题。`;
+
+  // 根据语料类型构建instruction/input/output
+  let userContent, assistantContent;
+
+  if (entry.question && entry.answer) {
+    // 已有Q&A结构
+    userContent = entry.question;
+    assistantContent = entry.answer;
+  } else if (tags.length > 0) {
+    // 有标签的条目：生成关于该内容的问答
+    userContent = `关于${category}类型的内容，请解释以下要点: ${tags.slice(0, 3).join('、')}`;
+    assistantContent = content;
+  } else {
+    // 通用条目：以理解和阐述的方式构建
+    userContent = `请阐述你对以下内容的理解和看法：\n${content.substring(0, 200)}`;
+    assistantContent = content;
+  }
+
+  return {
+    messages: [
+      { role: 'system', content: systemContent },
+      { role: 'user', content: userContent },
+      { role: 'assistant', content: assistantContent }
+    ]
+  };
+}
+
+/**
+ * 统一不同provider的任务状态值
+ */
+function normalizeJobStatus(rawStatus) {
+  const statusMap = {
+    // DeepSeek 状态
+    validating_files: 'pending',
+    queued: 'pending',
+    running: 'running',
+    succeeded: 'completed',
+    failed: 'failed',
+    cancelled: 'failed',
+    // Qwen/DashScope 状态
+    PENDING: 'pending',
+    RUNNING: 'running',
+    SUCCEEDED: 'completed',
+    FAILED: 'failed',
+    CANCELED: 'failed',
+    // 通用
+    pending: 'pending',
+    completed: 'completed'
+  };
+
+  return statusMap[rawStatus] || rawStatus;
+}
+
+module.exports = {
+  finetuneExportDataset,
+  finetuneSubmitJob,
+  finetuneCheckStatus,
+  finetuneRegisterModel,
+  finetuneListModels,
+  finetuneCallModel,
+  finetuneCompareModels,
+  finetuneGetCostEstimate
+};