feat: initialize experimental agent repo

.opencode/tools/locate_features.ts

@@ -0,0 +1,22 @@
+import { tool } from "@opencode-ai/plugin";
+
+export default tool({
+  description: "在前端地图上定位并高亮指定的管网要素。",
+  args: {
+    reason: tool.schema
+      .string()
+      .describe(
+        "Why this map positioning action is needed for the user request.",
+      ),
+    ids: tool.schema
+      .array(tool.schema.string())
+      .describe("Feature ids to locate."),
+    feature_type: tool.schema
+      .enum(["junction", "pipe", "valve", "reservoir", "pump", "tank"])
+      .describe("Type of feature to locate."),
+  },
+  async execute() {
+    // 前端工具只负责生成 tool part，真正的地图动作由 Agent SSE 适配层转发给浏览器执行。
+    return "已在地图上定位到指定要素。";
+  },
+});