feat: 待审核变更支持手动搜索匹配已有站点

par-api/src/main/java/com/par/api/controller/AdminController.java

@@ -296,6 +296,28 @@ public class AdminController {
         return ApiResponse.success(siteService.listChangesBySite(siteId));
     }
 
+    @GetMapping("/sites/search")
+    public ApiResponse<List<com.par.core.dto.SiteDTO>> searchSites(
+            @RequestParam("q") String q, HttpServletRequest request) {
+        checkAdmin(request);
+        return ApiResponse.success(siteService.searchSites(q));
+    }
+
+    @PostMapping("/changes/{id}/link")
+    public ApiResponse<Void> linkChangeToSite(
+            @PathVariable Long id,
+            @RequestBody Map<String, String> payload,
+            HttpServletRequest request) {
+        checkAdmin(request);
+        String targetSiteId = payload.get("siteId");
+        if (targetSiteId == null || targetSiteId.isBlank()) {
+            return ApiResponse.error(400, "siteId is required");
+        }
+        siteService.linkChangeToSite(id, targetSiteId);
+        log.info("Change linked: changeId={}, siteId={}", id, targetSiteId);
+        return ApiResponse.success();
+    }
+
     private void checkAdmin(HttpServletRequest request) {
         TrustLevel level = (TrustLevel) request.getAttribute("trustLevel");
         if (level == null || level != TrustLevel.ADMIN) {