chore: T-P-1 工作区收敛——并行会话成果与历史未入库文件整理入库

- 入库历史遗漏源码/测试：router_system 9 模块（agent/executors/inference/knowledge/
  memory/planner/skills/trace）、tests 11 个测试文件、config/knowledge 领域知识
- 入库根目录方案文档（v2/v3/可行性×2）、references 文献（arxiv 14-18/cnki_open/
  参考文献清单）、research 论文素材（routerarena/paper/中文文献 PDF）
- 前端构建产物刷新（新 hash）；webapp 误写文档删除
- gitignore 增补：deepseek-harness、research/_refs、.mimosa/.zcode、网关日志/pid、
  临时调试脚本、tests/e2e/node_modules、AI代理功能开发/prefix
- 基线确认：318 passed

research/routerarena/output/es-expert_summary.json

@@ -0,0 +1,33 @@
+{
+  "router_name": "es-expert",
+  "n_queries": 90,
+  "routing_latency_ms_per_query": 21.243365556519066,
+  "domain_distribution": {
+    "code": 12,
+    "general": 40,
+    "math": 6,
+    "legal": 6,
+    "medical": 8,
+    "finance": 8,
+    "life": 4,
+    "education": 6
+  },
+  "routing_distribution": {
+    "gpt-4o-mini": 8,
+    "mistral-medium": 62,
+    "claude-3-haiku-20240307": 16,
+    "gemini-2.0-flash-001": 2,
+    "deepseek-chat": 2
+  },
+  "confidence": {
+    "min": 0.2592,
+    "max": 0.99,
+    "mean": 0.5881833333333334
+  },
+  "mock_accuracy": 0.7444444444444445,
+  "total_cost_usd": 0.04596006,
+  "cost_per_1k_usd": 0.5106673333333333,
+  "arena_score_mock": 0.7223003144396156,
+  "prediction_file": "research/routerarena/output\\es-expert.json",
+  "diagnostics_file": "research/routerarena/output\\es-expert_diagnostics.json"
+}