整理项目记忆与Agent RAG入口

迁移项目共享记忆到 docs/project-memory，保留 .hermes 仅作为工具目录

新增 Agent 本地 RAG 索引与上下文包检索脚本

记录 RAG 依赖只安装到 .rag/runtime 并加入忽略规则

同步文档与检查脚本中的项目记忆路径

scripts/rag/rag-config.json

@@ -0,0 +1,46 @@
+{
+  "runtimeDir": ".rag/runtime",
+  "databaseDir": ".rag/lancedb",
+  "modelCacheDir": ".rag/models",
+  "tableName": "project_docs",
+  "model": "Xenova/multilingual-e5-small",
+  "chunk": {
+    "maxChars": 1600,
+    "overlapChars": 220
+  },
+  "sources": [
+    {
+      "path": "AGENTS.md",
+      "weight": 1.4
+    },
+    {
+      "path": "CONTEXT.md",
+      "weight": 1.3,
+      "optional": true
+    },
+    {
+      "path": "docs/project-memory",
+      "weight": 1.35
+    },
+    {
+      "path": "docs",
+      "weight": 1.0
+    }
+  ],
+  "exclude": [
+    ".git/",
+    ".rag/",
+    ".hermes/",
+    ".codegraph/",
+    ".app/",
+    "node_modules/",
+    "dist/",
+    "build/",
+    "coverage/",
+    "logs/",
+    "output/",
+    "server-rs/target/",
+    "server-rs/target-",
+    "tmp/"
+  ]
+}