fix: match SET_TRACED_PROCESSORS payload to agent protocol

Payload now sends {processors: {id: "BOTH"}} map instead of
{routeId, processorIds[]} array. Tracing state keyed by application
name (global, not per-route) matching agent behavior.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/stores/tracing-store.ts

@@ -1,23 +1,27 @@
 import { create } from 'zustand'
 
+type CaptureMode = 'NONE' | 'INPUT' | 'OUTPUT' | 'BOTH'
+
 interface TracingState {
-  tracedProcessors: Record<string, Set<string>>
-  isTraced: (appRoute: string, processorId: string) => boolean
-  toggleProcessor: (appRoute: string, processorId: string) => Set<string>
+  /** Key: applicationName → { processorId: captureMode } */
+  tracedProcessors: Record<string, Record<string, CaptureMode>>
+  isTraced: (app: string, processorId: string) => boolean
+  /** Toggle processor tracing (BOTH on, remove on off). Returns the full map for the app. */
+  toggleProcessor: (app: string, processorId: string) => Record<string, CaptureMode>
 }
 
 export const useTracingStore = create<TracingState>((set, get) => ({
   tracedProcessors: {},
 
-  isTraced: (appRoute, processorId) =>
-    get().tracedProcessors[appRoute]?.has(processorId) ?? false,
+  isTraced: (app, processorId) =>
+    processorId in (get().tracedProcessors[app] ?? {}),
 
-  toggleProcessor: (appRoute, processorId) => {
-    const current = new Set(get().tracedProcessors[appRoute] ?? [])
-    if (current.has(processorId)) current.delete(processorId)
-    else current.add(processorId)
+  toggleProcessor: (app, processorId) => {
+    const current = { ...(get().tracedProcessors[app] ?? {}) }
+    if (processorId in current) delete current[processorId]
+    else current[processorId] = 'BOTH'
     set((state) => ({
-      tracedProcessors: { ...state.tracedProcessors, [appRoute]: current },
+      tracedProcessors: { ...state.tracedProcessors, [app]: current },
     }))
     return current
   },