chore: maxTokens 65536 → 63488 (62K)

electron/harness/agent-loop/engine.ts

@@ -142,7 +142,7 @@ export class AgentLoopEngine extends EventEmitter {
           messages,
           tools: this.tools.length > 0 ? this.tools : undefined,
           params: {
-            maxTokens: 65536,
+            maxTokens: 63488,
             temperature: this.config.temperature,
             stream: true,
             thinkingEnabled: true,

electron/services/database.service.ts

@@ -244,7 +244,7 @@ export class DatabaseService {
       { key: 'llm.apiKey', value: '""', category: 'llm' },
       { key: 'llm.baseURL', value: '""', category: 'llm' },
       { key: 'llm.temperature', value: '0', category: 'llm' },
-      { key: 'llm.maxTokens', value: '65536', category: 'llm' },
+      { key: 'llm.maxTokens', value: '63488', category: 'llm' },
       { key: 'llm.fallbackProvider', value: '""', category: 'llm' },
       { key: 'llm.fallbackModel', value: '""', category: 'llm' },