feat(agent): add frontend action bridge

src/routes/chatStream.ts

@@ -74,6 +74,7 @@ type StreamPromptOptions = {
   traceId?: string;
   projectId?: string;
   signal?: AbortSignal;
+  suppressLegacyFrontendActions?: boolean;
   write: (event: string, data: Record<string, unknown>) => void;
 };
 
@@ -141,6 +142,7 @@ export const streamPromptResponse = async ({
   traceId,
   projectId,
   signal,
+  suppressLegacyFrontendActions = false,
   write,
 }: StreamPromptOptions): Promise<{
   aborted: boolean;
@@ -828,7 +830,7 @@ export const streamPromptResponse = async ({
               params: toolParams,
               reason,
             });
-            if (envelope) {
+            if (envelope && !(suppressLegacyFrontendActions && ["zoom_to_map", "locate_features", "view_history", "view_scada"].includes(part.tool))) {
               write("ui_envelope", {
                 session_id: clientSessionId,
                 envelope_id: createEnvelopeId(part.tool),