ci: add auto-link sub-issue workflow and issue template

.github/ISSUE_TEMPLATE/sub_issue_technical.yml

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+name: 🔧 Feature（开发用）
+description: 基于用户 Issue 拆解的技术实现方案（开发人员使用）
+title: "[Feature] "
+labels: ["feature"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        此模板供开发人员使用，用于将用户提交的 Issue 转换为具体的技术实现方案。
+
+  - type: input
+    id: parent_issue
+    attributes:
+      label: 关联 Issue
+      description: 对应的 nex-taas-feedback 用户 Issue（格式：china-qijizhifeng/nex-taas-feedback#123）
+      placeholder: "china-qijizhifeng/nex-taas-feedback#123"
+    validations:
+      required: true
+
+  - type: textarea
+    id: technical_design
+    attributes:
+      label: 技术方案
+      description: 完整的技术实现方案
+      placeholder: |
+        ## 背景分析
+        - 当前系统现状：...
+        - 存在的问题/差距：...
+        - 可复用的现有能力：...
+
+        ## 竞品分析
+        | 竞品/方案 | 实现方式 | 优点 | 缺点 | 适用场景 |
+        |-----------|----------|------|------|----------|
+        | 方案 A    |          |      |      |          |
+        | 方案 B    |          |      |      |          |
+
+        选型建议：...
+
+        ## 整体架构
+        （附架构图或 Mermaid 流程图）
+
+        ## 核心组件及职责
+        - 组件 A：负责...
+        - 组件 B：负责...
+
+        ## 关键接口定义
+        ```python
+        class XXX:
+            def method(self, ...) -> ...:
+                """..."""
+        ```
+
+        ## 数据流与调用关系
+        数据输入 -> 处理 A -> 处理 B -> 输出
+
+        ## 文件变更清单
+        - **新建** `path/to/new_file.py` — 描述
+        - **修改** `path/to/existing.py` — 修改内容
+
+        ## API / 配置变更
+        - 新增 API: ...
+        - 配置变更: ...
+
+        ## 依赖与兼容性
+        - 新增依赖：...
+        - 向后兼容性：...
+
+        ## 风险评估
+        | 风险 | 影响 | 概率 | 应对措施 |
+        |------|------|------|----------|
+
+        ## 里程碑与排期
+        - [ ] 阶段 1：xxx（预计 x 天）
+        - [ ] 阶段 2：xxx（预计 x 天）
+    validations:
+      required: true
+
+  - type: textarea
+    id: test_plan
+    attributes:
+      label: 测试方案
+      description: 完整的验证与测试计划
+      placeholder: |
+        ## 单元测试
+        - 测试用例 1：...
+        - 测试用例 2：...
+
+        ## 集成测试
+        - 端到端测试场景：...
+        - 测试数据准备：...
+
+        ## 性能验证
+        - 基准指标：...
+        - 预期表现：...
+        - 压测方案：...
+
+        ## 验收标准
+        - [ ] 标准 1
+        - [ ] 标准 2
+
+        ## 回归测试
+        - 影响范围：...
+        - 需要回归的模块：...
+    validations:
+      required: true

.github/workflows/auto-link-parent.yml

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+name: Auto-link as Sub-issue
+
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  link-parent:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Link as sub-issue to parent
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.PROJECT_TOKEN }}
+          script: |
+            const body = context.payload.issue.body || '';
+
+            // Parse "关联 Issue" field - matches formats like:
+            // china-qijizhifeng/nex-taas-feedback#123
+            // https://github.com/china-qijizhifeng/nex-taas-feedback/issues/123
+            let parentOwner, parentRepo, parentNumber;
+
+            // Try URL format first
+            const urlMatch = body.match(/https:\/\/github\.com\/([^/]+)\/([^/]+)\/issues\/(\d+)/);
+            if (urlMatch) {
+              [, parentOwner, parentRepo, parentNumber] = urlMatch;
+            } else {
+              // Try org/repo#number format
+              const refMatch = body.match(/([a-zA-Z0-9_.-]+)\/([a-zA-Z0-9_.-]+)#(\d+)/);
+              if (refMatch) {
+                [, parentOwner, parentRepo, parentNumber] = refMatch;
+              }
+            }
+
+            if (!parentNumber) {
+              console.log('No parent issue reference found, skipping');
+              return;
+            }
+
+            parentNumber = parseInt(parentNumber);
+            console.log(`Found parent: ${parentOwner}/${parentRepo}#${parentNumber}`);
+
+            // Get parent issue node ID
+            const parentResult = await github.graphql(`
+              query($owner: String!, $repo: String!, $number: Int!) {
+                repository(owner: $owner, name: $repo) {
+                  issue(number: $number) {
+                    id
+                  }
+                }
+              }
+            `, { owner: parentOwner, repo: parentRepo, number: parentNumber });
+
+            const parentId = parentResult.repository.issue.id;
+
+            // Get current issue node ID
+            const childResult = await github.graphql(`
+              query($owner: String!, $repo: String!, $number: Int!) {
+                repository(owner: $owner, name: $repo) {
+                  issue(number: $number) {
+                    id
+                  }
+                }
+              }
+            `, {
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              number: context.issue.number
+            });
+
+            const childId = childResult.repository.issue.id;
+
+            // Add as sub-issue
+            try {
+              await github.graphql(`
+                mutation($parentId: ID!, $childId: ID!) {
+                  addSubIssue(input: { issueId: $parentId, subIssueId: $childId }) {
+                    issue {
+                      id
+                    }
+                  }
+                }
+              `, { parentId, childId });
+
+              console.log(`✅ Linked ${context.repo.owner}/${context.repo.repo}#${context.issue.number} as sub-issue of ${parentOwner}/${parentRepo}#${parentNumber}`);
+            } catch (e) {
+              console.log(`❌ Failed to link: ${e.message}`);
+            }

.github/workflows/feishu-notify.yml

@@ -0,0 +1,142 @@
+name: Notify Feishu on New Issue
+
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send Feishu Card Notification
+        uses: actions/github-script@v7
+        env:
+          FEISHU_WEBHOOK_URL: ${{ secrets.FEISHU_WEBHOOK_URL }}
+        with:
+          script: |
+            const issue = context.payload.issue;
+            const author = issue.user.login;
+            const title = issue.title;
+            const url = issue.html_url;
+            const body = issue.body || '';
+            const labels = issue.labels.map(l => l.name);
+
+            // Determine if bug or feature based on issue type or title prefix
+            const isBug = title.startsWith('[Bug]') || labels.includes('bug');
+            const isFeature = title.startsWith('[FR]') || labels.includes('enhancement');
+
+            let cardHeader, cardColor, cardType, cardContent;
+
+            if (isBug) {
+              cardColor = 'red';
+              cardHeader = '😣问题反馈';
+
+              // Parse bug report fields from body
+              let description = '';
+              const descMatch = body.match(/### 问题描述\s*\n\s*\n([\s\S]*?)(?=\n###|$)/);
+              if (descMatch) description = descMatch[1].trim();
+
+              cardContent = [
+                {
+                  "tag": "div",
+                  "text": {
+                    "tag": "lark_md",
+                    "content": `问题反馈：\n反馈人：**${author}**\n**问题概述：${title.replace('[Bug] ', '')}**\n${description ? description.substring(0, 500) : ''}\n\n请及时查看并处理该问题。`
+                  }
+                },
+                {
+                  "tag": "action",
+                  "actions": [
+                    {
+                      "tag": "button",
+                      "text": {
+                        "tag": "plain_text",
+                        "content": "问题详情🔍"
+                      },
+                      "url": url,
+                      "type": "default"
+                    }
+                  ]
+                },
+                { "tag": "hr" },
+                {
+                  "tag": "note",
+                  "elements": [
+                    {
+                      "tag": "lark_md",
+                      "content": "来自 [TaaS迭代](https://github.com/orgs/china-qijizhifeng/projects/3)"
+                    }
+                  ]
+                }
+              ];
+            } else {
+              cardColor = 'green';
+              cardHeader = '⏰新增需求';
+
+              let description = '';
+              const descMatch = body.match(/### 功能描述\s*\n\s*\n([\s\S]*?)(?=\n###|$)/);
+              if (descMatch) description = descMatch[1].trim();
+
+              cardContent = [
+                {
+                  "tag": "div",
+                  "text": {
+                    "tag": "lark_md",
+                    "content": `新增需求：\n提需人：**${author}**\n**需求概述：${title.replace('[FR] ', '')}**\n${description ? description.substring(0, 500) : ''}\n\n请及时查看并处理该需求，如有疑问可与提需人沟通。`
+                  }
+                },
+                {
+                  "tag": "action",
+                  "actions": [
+                    {
+                      "tag": "button",
+                      "text": {
+                        "tag": "plain_text",
+                        "content": "需求详情🔍"
+                      },
+                      "url": url,
+                      "type": "default"
+                    }
+                  ]
+                },
+                { "tag": "hr" },
+                {
+                  "tag": "note",
+                  "elements": [
+                    {
+                      "tag": "lark_md",
+                      "content": "来自 [TaaS迭代](https://github.com/orgs/china-qijizhifeng/projects/3)"
+                    }
+                  ]
+                }
+              ];
+            }
+
+            const card = {
+              "msg_type": "interactive",
+              "card": {
+                "header": {
+                  "title": {
+                    "tag": "plain_text",
+                    "content": cardHeader
+                  },
+                  "template": cardColor
+                },
+                "elements": cardContent
+              }
+            };
+
+            const webhookUrl = process.env.FEISHU_WEBHOOK_URL;
+            if (!webhookUrl) {
+              console.log('FEISHU_WEBHOOK_URL not set, skipping notification');
+              return;
+            }
+
+            const response = await fetch(webhookUrl, {
+              method: 'POST',
+              headers: { 'Content-Type': 'application/json' },
+              body: JSON.stringify(card)
+            });
+
+            const result = await response.json();
+            console.log('Feishu response:', JSON.stringify(result));