feat(harness): integrate walkinglabs 5-subsystem model with templates

- Add .harness/ directory with 6 templates:
  init.sh (unified startup entry)
  PROGRESS.md (session progress tracking)
  feature_list.json (machine-readable feature status)
  clean-state-checklist.md (end-of-session cleanup)
  session-handoff.md (cross-session handoff)
  evaluator-rubric.md (review scoring)
- Update AGENTS.md: 5-subsystem model (Instruction/Tools/Environment/State/Feedback)
- Add Init-Plan-Implement-Verify-Cleanup workflow cycle

.harness/init.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+# Harness Init — 统一启动与验证入口
+# 每次新会话开始前运行
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+echo "==> 当前目录: $PWD"
+echo "==> Git 状态"
+git status --short 2>/dev/null || true
+git log --oneline -3 2>/dev/null || true
+
+echo ""
+echo "==> 编译检查"
+cd openhis-server-new
+mvn compile -pl openhis-application -am -q 2>/dev/null && echo "    ✅ 编译通过" || echo "    ❌ 编译失败"
+
+echo ""
+echo "==> 读取进度"
+if [ -f .harness/PROGRESS.md ]; then
+    head -20 .harness/PROGRESS.md
+else
+    echo "    (无进度文件)"
+fi
+
+echo ""
+echo "==> 读取功能清单"
+if [ -f .harness/feature_list.json ]; then
+    python3 -c "
+import json
+with open('.harness/feature_list.json') as f:
+    data = json.load(f)
+features = [f for f in data.get('features', []) if f.get('status') == 'in_progress']
+if features:
+    print(f\"    当前进行中: {features[0].get('title', 'unknown')}\")
+else:
+    print('    当前无进行中的功能')
+" 2>/dev/null || echo "    (无法解析)"
+fi
+
+echo ""
+echo "==> 环境就绪 ✅"