feat(kimi): unwrap redirect urls and merge search panel into citations

Pull Kimi's "搜索网页" panel results into the regular citation source
flow, drop the dedicated-citation-panel branch on the server side, and
unwrap Kimi redirect URLs so citation source items resolve to the real
target host.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

server/internal/tenant/app/monitoring_callback_service.go

@@ -2680,12 +2680,7 @@ func buildMonitoringCitationSourceInputs(platformID string, req MonitoringTaskRe
 }
 
 func monitoringPlatformUsesDedicatedCitationPanel(platformID string) bool {
-	switch normalizeMonitoringPlatformID(platformID) {
-	case "kimi":
-		return true
-	default:
-		return false
-	}
+	return false
 }
 
 func monitoringPlatformResolvesContentCitations(platformID string) bool {