feat(platform): improve map and project save workflows

frontends/apps/simple-platform-vue/src/api/mapEdit.ts

@@ -1,3 +1,4 @@
+import type { AxiosError } from 'axios'
 import http from './http'
 
 /**
@@ -331,6 +332,13 @@ export interface MapSaveResult {
   savedAt: string
 }
 
+export interface MapContentResult {
+  name: string
+  fileName: string
+  path: string
+  content: string
+}
+
 /** 保存结果：success 正常返回 data；conflict=true 表示同名地图已存在，调用方应弹「替换」确认。 */
 export type MapSaveOutcome =
   | { ok: true; data: MapSaveResult }
@@ -363,6 +371,12 @@ export type MapMergeOutcome =
 export const mapsApi = {
   list: () => unwrap<MapListResult>(http.get(`${BASE}/maps`)),
 
+  /** 读取固定地图文件夹内某张地图的 JSON 原文（MiGu.Server MapsContentController）。 */
+  readContent: (name: string) =>
+    http.get<MapContentResult>(
+      `/maps/${encodeURIComponent(name)}/content`
+    ).then((r) => r.data),
+
   sceneTaskStatus: () => unwrap<SceneTaskStatus>(http.get(`${BASE}/maps/scene-task-status`)),
 
   /**
@@ -370,9 +384,18 @@ export const mapsApi = {
    * 这里翻译为 { ok:false, conflict:true }，让调用方弹「是否替换原地图」确认框。
    */
   async save(name: string, overwrite = false): Promise<MapSaveOutcome> {
-    const { data } = await http.post<MapEditEnvelope<MapSaveResult>>(`${BASE}/maps/save`, { name, overwrite })
-    if (data?.success) return { ok: true, data: data.data as MapSaveResult }
-    return { ok: false, conflict: data?.code === 409, message: data?.message ?? '保存失败' }
+    try {
+      const { data } = await http.post<MapEditEnvelope<MapSaveResult>>(`${BASE}/maps/save`, { name, overwrite })
+      if (data?.success) return { ok: true, data: data.data as MapSaveResult }
+      return { ok: false, conflict: data?.code === 409, message: data?.message ?? '保存失败' }
+    } catch (err) {
+      const ax = err as AxiosError<MapEditEnvelope<MapSaveResult>>
+      const body = ax.response?.data
+      if (ax.response?.status === 409 || body?.code === 409) {
+        return { ok: false, conflict: true, message: body?.message ?? '地图已存在' }
+      }
+      throw err
+    }
   },
 
   /** 加载指定地图到场景以供编辑（不校验任务、不改当前使用地图）。 */