Add workflow-status telemetry view and make panel modes on-demand

Workflow-status: a new WorkflowProgressTracker singleton taps the
suppressed dynamic-workflow subagent events (those carrying
parent_tool_use_id) into per-session telemetry without altering the
existing guard; the snapshot is serialized into the new chains.workflow_info
column on FinalizeChain (ChainId-matched so a panel member of the same
session cannot clear it) and exposed via GET /api/sessions/{id}/workflow-status
(live -> persisted -> none). The header menu gains a 'Workflow-Status' entry
with a modal that live-polls every 2s while running and self-stops on close.

Panel on-demand: Fusion/MoA is now a transient per-request multiModelMode
flag (like plan/ultracode) instead of a persisted session column. Session
settings keep only the panel members + moa_layers; the mode <select> was
removed and the composer dropdown drives the mode per request.

Docs: ARCHITECTURE.md, ARCHITECTURE_QUICK.md and README.md updated for both
features plus the already-shipped z.ai/GLM provider, GLM 5.2+ effort
passthrough, web-search-prime MCP and the ultracode toggle.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Services/AnthropicService.cs

@@ -44,11 +44,12 @@ public partial class AnthropicService
     private readonly VectorSearchService _vectorSearch;
     private readonly EmbeddingBackgroundService _embeddingBg;
     private readonly SteeringQueue _steeringQueue;
+    private readonly WorkflowProgressTracker _workflowTracker;
     private ChatService _chatService;
     private TelegramService _telegramService;
     private ClaudeCliService _cliService;
 
-    public AnthropicService(IHttpClientFactory httpFactory, ToolService toolService, DatabaseService db, MemoryService memoryService = null, ServerSettingsService settings = null, VectorSearchService vectorSearch = null, EmbeddingBackgroundService embeddingBg = null, SteeringQueue steeringQueue = null)
+    public AnthropicService(IHttpClientFactory httpFactory, ToolService toolService, DatabaseService db, MemoryService memoryService = null, ServerSettingsService settings = null, VectorSearchService vectorSearch = null, EmbeddingBackgroundService embeddingBg = null, SteeringQueue steeringQueue = null, WorkflowProgressTracker workflowTracker = null)
     {
         _httpFactory = httpFactory;
         _toolService = toolService;
@@ -58,6 +59,7 @@ public partial class AnthropicService
         _vectorSearch = vectorSearch;
         _embeddingBg = embeddingBg;
         _steeringQueue = steeringQueue;
+        _workflowTracker = workflowTracker;
     }
 
     public void SetCliService(ClaudeCliService cliService)
@@ -320,7 +322,18 @@ public partial class AnthropicService
     }
 
     private Task FinalizeChain(ChainRecord chain, TokenUsage usage, int iterations, string stopReason, System.Diagnostics.Stopwatch sw, string streamErrorInfo = null)
-        => SseHelper.FinalizeChain(_db, chain, usage, iterations, stopReason, sw, streamErrorInfo);
+    {
+        // Workflow-Telemetrie (ultracode-Subagenten) für DIESE Chain persistieren und den
+        // Live-Tracker freigeben. Der ChainId-Abgleich verhindert, dass ein anderer Finalize-Pfad
+        // derselben Session (z.B. ein Panel-Member) den Workflow-Eintrag fälschlich abräumt.
+        if (_workflowTracker != null && !string.IsNullOrEmpty(chain.SessionId)
+            && _workflowTracker.ChainIdFor(chain.SessionId) == chain.ChainId)
+        {
+            chain.WorkflowInfo = _workflowTracker.GetJson(chain.SessionId);
+            _workflowTracker.End(chain.SessionId);
+        }
+        return SseHelper.FinalizeChain(_db, chain, usage, iterations, stopReason, sw, streamErrorInfo);
+    }
 
     /// <summary>
     /// Versieht das letzte Element einer Block-Liste (Tools, System-Prompt-Blöcke, etc.) mit