v1.1.0: 实现核心业务逻辑（扫描/任务书/派发/状态机）

新增（scripts/ 分层完整实现）：
- scripts/util/{constants,date_util,runtime_paths,logging_setup}.py
- scripts/db/{connection,seed_data,repository}.py（SQLite + 5 张表 + 50 份样例合同）
- scripts/service/{scanner,task_generator,dispatcher,html_renderer}.py
- scripts/cli/app.py（argparse 子命令）
- scripts/templates/task.html.j2（Jinja2 渲染，无 jinja2 时降级到 str.replace）
- examples/{contracts_sample,performance_sample}.csv（本地样例数据）

修改：
- scripts/main.py：argparse + jiangchang_skill_core 降级
- SKILL.md：version 1.0.1 → 1.1.0
- CHANGELOG.md：加 v1.1.0 条目
- .env.example：加 DB_PATH / HTML_OUTPUT_DIR / JIANGCHANG_DATA_DIR

本地验证（9 个 CLI 命令全部 exit code = 0）：
- health / version / config-path / init-db：基础 4 命令
- scan-expiring-contracts --thresholds 90,60,30：42 份可续聘 → 红 10 / 橙 10 / 黄 10，生成 30 任务
- render-html：写 output/<task_id>.html（4.9 KB）
- generate-renewal-task：单份合同任务书生成
- mark-contract-renewed：状态机更新 + 关闭 open alerts
- dispatch-task-notice：按单位/月份派发 payload（dry-run 模式）

业务规则（AI 续聘建议本地版，规则顺序判断）：
1. 师德 < 60 → non_renew
2. 近 3 年考核有不合格（< 60）→ observe
3. 全部 >= 80 且逐年上升 → renew
4. 其他 → observe

Co-Authored-By: Claude Code <noreply@anthropic.com>

scripts/templates/task.html.j2

@@ -0,0 +1,118 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+  <meta charset="UTF-8" />
+  <title>{{TITLE}}</title>
+  <style>
+    /* 数据管理 iframe 预览布局基线 */
+    html, body {
+      margin: 0;
+      padding: 16px;
+      font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
+      color: #1f2329;
+      background: #fafbfc;
+      line-height: 1.6;
+    }
+    .report { max-width: 100%; }
+    .header {
+      padding: 20px;
+      background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
+      color: #fff;
+      border-radius: 8px;
+      margin-bottom: 16px;
+    }
+    .header h1 { margin: 0 0 8px; font-size: 22px; }
+    .header .meta { color: #dbeafe; font-size: 13px; }
+    .info-grid {
+      display: grid;
+      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+      gap: 12px;
+      margin-bottom: 16px;
+    }
+    .info-card {
+      padding: 12px 16px;
+      background: #fff;
+      border: 1px solid #e5e6eb;
+      border-radius: 8px;
+    }
+    .info-card .label { color: #8c959f; font-size: 12px; }
+    .info-card .value { font-size: 16px; font-weight: 600; margin-top: 4px; word-break: break-word; }
+    .section {
+      padding: 16px 20px;
+      background: #fff;
+      border: 1px solid #e5e6eb;
+      border-radius: 8px;
+      margin-bottom: 16px;
+    }
+    .section h2 { margin: 0 0 12px; font-size: 16px; color: #1e3a8a; }
+    .summary-text { white-space: pre-wrap; color: #4e5969; }
+    .ai-suggestion {
+      padding: 14px 18px;
+      border-left: 4px solid #3b82f6;
+      background: #eff6ff;
+      border-radius: 4px;
+      color: #1e40af;
+    }
+    .ai-suggestion.renew { border-left-color: #059669; background: #ecfdf5; color: #065f46; }
+    .ai-suggestion.observe { border-left-color: #d97706; background: #fffbeb; color: #92400e; }
+    .ai-suggestion.non-renew { border-left-color: #c53030; background: #fef2f2; color: #991b1b; }
+    .checklist { list-style: none; padding: 0; margin: 0; }
+    .checklist li {
+      padding: 8px 0;
+      border-bottom: 1px solid #f0f1f3;
+      display: flex;
+      align-items: center;
+      gap: 8px;
+    }
+    .checklist li:last-child { border-bottom: 0; }
+    .checklist .box {
+      width: 16px; height: 16px;
+      border: 1px solid #cbd5e1;
+      border-radius: 3px;
+      flex-shrink: 0;
+    }
+    .footer { margin-top: 16px; color: #8c959f; font-size: 12px; text-align: right; }
+  </style>
+</head>
+<body>
+  <div class="report">
+    <div class="header">
+      <h1>{{TITLE}}</h1>
+      <div class="meta">任务编号：{{TASK_ID}}　·　生成时间：{{GENERATED_AT}}</div>
+    </div>
+
+    <div class="info-grid">
+      <div class="info-card"><div class="label">教职工姓名</div><div class="value">{{TEACHER_NAME}}</div></div>
+      <div class="info-card"><div class="label">工号</div><div class="value">{{EMPLOYEE_ID}}</div></div>
+      <div class="info-card"><div class="label">所在单位</div><div class="value">{{UNIT_NAME}}</div></div>
+      <div class="info-card"><div class="label">聘任岗位</div><div class="value">{{POSITION}}</div></div>
+      <div class="info-card"><div class="label">合同类型</div><div class="value">{{CONTRACT_TYPE}}</div></div>
+      <div class="info-card"><div class="label">合同起止</div><div class="value">{{CONTRACT_START}} ~ {{CONTRACT_END}}</div></div>
+      <div class="info-card"><div class="label">距到期日</div><div class="value">{{DAYS_TO_EXPIRE}} 天</div></div>
+      <div class="info-card"><div class="label">预警等级</div><div class="value">{{ALERT_LEVEL}}</div></div>
+    </div>
+
+    <div class="section">
+      <h2>近三年工作业绩摘要</h2>
+      <div class="summary-text">{{PERFORMANCE_SUMMARY}}</div>
+    </div>
+
+    <div class="section">
+      <h2>AI 续聘建议</h2>
+      <div class="ai-suggestion {{SUGGESTION_CLASS}}">
+        <strong>{{SUGGESTION_LABEL}}</strong><br />
+        {{SUGGESTION_REASON}}
+      </div>
+    </div>
+
+    <div class="section">
+      <h2>所需材料清单（请于 {{DEADLINE}} 前备齐）</h2>
+      <ul class="checklist">
+{{CHECKLIST_BODY}}
+      </ul>
+    </div>
+
+    <div class="footer">本任务书由「合同到期智能预警与续聘辅助」技能自动生成 · 最终续聘决定权归人事处</div>
+  </div>
+</body>
+</html>