feat: rename logForwardingLevel to applicationLogLevel, add agentLogLevel

Align with cameleer3-common rename: logForwardingLevel → applicationLogLevel
(root logger) and new agentLogLevel (com.cameleer3 logger). Both fields
are on ApplicationConfig, pushed via config-update. UI shows "App Log Level"
and "Agent Log Level" on AppConfig slide-in, AgentHealth config bar, and
AppConfigDetailPage.

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

ui/src/api/queries/commands.ts

@@ -22,7 +22,8 @@ export interface ApplicationConfig {
   updatedAt?: string
   engineLevel?: string
   payloadCaptureMode?: string
-  logForwardingLevel?: string
+  applicationLogLevel?: string
+  agentLogLevel?: string
   metricsEnabled: boolean
   samplingRate: number
   tracedProcessors: Record<string, string>