feat: DeerFlow 2.0 core capabilities — Phase 1.0 + 1.1

Phase 1.0 — Butler Mode UI:
- Hide "自动化" and "技能市场" entries from sidebar navigation
- Remove AutomationPanel and SkillMarket view rendering from App.tsx
- Simplify MainViewType to only 'chat'
- Main interface is now: chat + conversation list + detail panel only

Phase 1.1 — Mode Differentiation:
- Add subagent_enabled field to ChatModeConfig (Rust), StreamChatRequest (Tauri),
  gateway-client, kernel-client, saas-relay-client, and streamStore
- TaskTool is now only registered when subagent_enabled=true (Ultra mode)
- System prompt includes sub-agent delegation instructions only in Ultra mode
- Frontend transmits subagent_enabled from ChatMode config through the full stack

This connects the 4-tier mode selector (Flash/Thinking/Pro/Ultra) to actual
backend behavioral differences — Ultra mode now truly enables sub-agent delegation.

desktop/src/lib/gateway-client.ts

@@ -476,6 +476,7 @@ export class GatewayClient {
       thinking_enabled?: boolean;
       reasoning_effort?: string;
       plan_mode?: boolean;
+      subagent_enabled?: boolean;
     }
   ): Promise<{ runId: string }> {
     const agentId = opts?.agentId || this.defaultAgentId;
@@ -489,6 +490,7 @@ export class GatewayClient {
         thinking_enabled: opts?.thinking_enabled,
         reasoning_effort: opts?.reasoning_effort,
         plan_mode: opts?.plan_mode,
+        subagent_enabled: opts?.subagent_enabled,
       };
       this.fetchDefaultAgentId().then(() => {
         const resolvedAgentId = this.defaultAgentId;
@@ -529,6 +531,7 @@ export class GatewayClient {
       thinking_enabled?: boolean;
       reasoning_effort?: string;
       plan_mode?: boolean;
+      subagent_enabled?: boolean;
     }
   ): void {
     // Close existing connection if any
@@ -570,6 +573,9 @@ export class GatewayClient {
         if (chatModeOpts?.plan_mode !== undefined) {
           chatRequest.plan_mode = chatModeOpts.plan_mode;
         }
+        if (chatModeOpts?.subagent_enabled !== undefined) {
+          chatRequest.subagent_enabled = chatModeOpts.subagent_enabled;
+        }
         this.zclawWs?.send(JSON.stringify(chatRequest));
       };
 

desktop/src/lib/kernel-chat.ts

@@ -59,6 +59,7 @@ export function installChatMethods(ClientClass: { prototype: KernelClient }): vo
       thinking_enabled?: boolean;
       reasoning_effort?: string;
       plan_mode?: boolean;
+      subagent_enabled?: boolean;
     }
   ): Promise<{ runId: string }> {
     const runId = crypto.randomUUID();
@@ -185,6 +186,7 @@ export function installChatMethods(ClientClass: { prototype: KernelClient }): vo
           thinkingEnabled: opts?.thinking_enabled,
           reasoningEffort: opts?.reasoning_effort,
           planMode: opts?.plan_mode,
+          subagentEnabled: opts?.subagent_enabled,
         },
       });
     } catch (err: unknown) {

desktop/src/lib/kernel-client.ts

@@ -403,7 +403,7 @@ export interface KernelClient {
 
   // Chat (kernel-chat.ts)
   chat(message: string, opts?: { sessionKey?: string; agentId?: string }): Promise<{ runId: string; sessionId?: string; response?: string }>;
-  chatStream(message: string, callbacks: import('./kernel-types').StreamCallbacks, opts?: { sessionKey?: string; agentId?: string; thinking_enabled?: boolean; reasoning_effort?: string; plan_mode?: boolean }): Promise<{ runId: string }>;
+  chatStream(message: string, callbacks: import('./kernel-types').StreamCallbacks, opts?: { sessionKey?: string; agentId?: string; thinking_enabled?: boolean; reasoning_effort?: string; plan_mode?: boolean; subagent_enabled?: boolean }): Promise<{ runId: string }>;
   cancelStream(sessionId: string): Promise<void>;
   fetchDefaultAgentId(): Promise<string | null>;
   setDefaultAgentId(agentId: string): void;

desktop/src/lib/saas-relay-client.ts

@@ -108,6 +108,7 @@ export function createSaaSRelayGatewayClient(
       thinking_enabled?: boolean;
       reasoning_effort?: string;
       plan_mode?: boolean;
+      subagent_enabled?: boolean;
     },
   ): Promise<{ runId: string }> {
     const runId = `run_${Date.now()}`;