Feat: Implement Project Claim Output Brake and refine agent reasoning

src/agent.ts

@@ -34,6 +34,7 @@ import { actionQueue } from './core/queue';
 import { ConflictResolver } from './core/conflict';
 import {
     buildSecondBrainTrace,
+    enforceProjectClaimPolicyInAnswer,
     renderSecondBrainTraceContext,
     renderSecondBrainTraceMarkdown,
     SecondBrainTrace
@@ -409,7 +410,10 @@ export class AgentExecutor {
 
             // 5. Execute Actions
             const rationale = this.parseRationale(aiResponseText);
-            const assistantContent = this.sanitizeAssistantContent(aiResponseText);
+            const assistantContent = enforceProjectClaimPolicyInAnswer(
+                this.sanitizeAssistantContent(aiResponseText),
+                secondBrainTrace
+            );
             const traceMarkdown = secondBrainTrace
                 ? renderSecondBrainTraceMarkdown(secondBrainTrace, !!options.secondBrainTraceDebug)
                 : '';

src/features/secondBrainTrace.ts

@@ -246,6 +246,45 @@ export function renderSecondBrainTraceMarkdown(trace: SecondBrainTrace, debug: b
     ].join('\n');
 }
 
+export function enforceProjectClaimPolicyInAnswer(answer: string, trace: SecondBrainTrace | null): string {
+    if (!trace || trace.projectClaimPolicy !== 'general-only') return answer;
+
+    const forbiddenPatterns = [
+        /[^.!?。！？\n]*(?:현재\s*)?(?:개발\s*방향은\s*)?기술적\s*기반(?:\s*면에서는)?\s*(?:안정적|탄탄|준비)[^.!?。！？\n]*(?:[.!?。！？]|$)/gi,
+        /[^.!?。！？\n]*아키텍처(?:는|가)?\s*(?:유연|안정|확장성|준비|견고)[^.!?。！？\n]*(?:[.!?。！？]|$)/gi,
+        /[^.!?。！？\n]*모듈화(?:된)?\s*구조[^.!?。！？\n]*(?:[.!?。！？]|$)/gi,
+        /[^.!?。！？\n]*확장성\s*(?:측면에서)?\s*(?:준비|확보|충분|높)[^.!?。！？\n]*(?:[.!?。！？]|$)/gi,
+        /[^.!?。！？\n]*구조적\s*안정성[^.!?。！？\n]*(?:[.!?。！？]|$)/gi,
+        /[^.!?。！？\n]*API\s*Gateway\s*기반[^.!?。！？\n]*(?:[.!?。！？]|$)/gi,
+        /[^.!?。！？\n]*비즈니스\s*로직[^.!?。！？\n]*데이터\s*접근\s*계층[^.!?。！？\n]*(?:[.!?。！？]|$)/gi
+    ];
+
+    let sanitized = answer;
+    let removed = false;
+    for (const pattern of forbiddenPatterns) {
+        sanitized = sanitized.replace(pattern, (match) => {
+            removed = true;
+            return match.includes('\n') ? '\n' : '';
+        });
+    }
+
+    if (!removed) return answer;
+
+    const warning = [
+        '> 현재 정보만으로는 기술 구조를 판단할 수 없습니다.',
+        '> 기술적 안정성, 아키텍처 유연성, 모듈화 여부는 소스 코드나 설계 문서 확인이 필요합니다.'
+    ].join('\n');
+
+    return insertAfterFirstBlock(sanitized.trim(), warning);
+}
+
+function insertAfterFirstBlock(answer: string, insertion: string): string {
+    if (!answer.trim()) return insertion;
+    const blocks = answer.split(/\n{2,}/);
+    if (blocks.length <= 1) return `${insertion}\n\n${answer}`;
+    return [blocks[0], insertion, ...blocks.slice(1)].join('\n\n');
+}
+
 function deriveProjectClaimPolicy(
     docs: SecondBrainTraceDocument[],
     groundingScore: number