feat(tools): add search and map tools

.opencode/tools/geocode.ts

@@ -0,0 +1,37 @@
+import { tool } from "@opencode-ai/plugin";
+
+const internalBaseUrl =
+  process.env.TJWATER_AGENT_INTERNAL_BASE_URL ?? "http://127.0.0.1:8787";
+const internalToken = process.env.TJWATER_AGENT_INTERNAL_TOKEN ?? "";
+
+export default tool({
+  description:
+    "调用 TJWater 后端的天地图地理编码服务，将中国境内结构化地址或地点名称转换为经纬度。若需缩放地图，把返回的 location.lon/location.lat 传给 zoom_to_map，并设置 source_crs='EPSG:4326'。",
+  args: {
+    reason: tool.schema
+      .string()
+      .describe("Why geocoding is required for the current user request."),
+    keyword: tool.schema
+      .string()
+      .describe("Address or place name to geocode, such as 北京市人民政府."),
+  },
+  async execute(args, context) {
+    const response = await fetch(`${internalBaseUrl}/internal/tools/geocode`, {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+        "x-agent-internal-token": internalToken,
+      },
+      body: JSON.stringify({
+        session_id: context.sessionID,
+        keyword: args.keyword,
+      }),
+    });
+
+    const text = await response.text();
+    if (!response.ok) {
+      throw new Error(text);
+    }
+    return text;
+  },
+});