AX Agent 계획 선행 잔재 제거 및 최종 후속 권유 조건부 완화

이번 커밋은 claude-code와 비교했을 때 AX에 남아 있던 계획 선행 흐름과 과한 최종 후속 권유를 줄이는 데 집중했다.

핵심 변경 사항:

- AgentLoopService에서 사용되지 않는 plan prelude/승인용 계획 생성 블록 제거

- FinalReportGate를 review 작업 및 고영향 변경에만 적용하도록 축소

- FinalReportQuality 프롬프트에서 remaining risk/next action은 실제 미해결 사항이 있을 때만 쓰도록 완화

- Cowork 프롬프트에서 document_plan을 기본 선행 단계처럼 밀지 않고 필요 시만 사용하도록 조정

- Code REPORT 단계도 변경 내용과 검증 요약 중심으로 정리하고 미해결 리스크만 선택적으로 언급하도록 수정

문서 반영:

- README.md, docs/DEVELOPMENT.md에 2026-04-10 00:08 (KST) 기준 이력 추가

검증 결과:

- dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify\\ -p:IntermediateOutputPath=obj\\verify\

- 경고 0개, 오류 0개

src/AxCopilot/Views/ChatWindow.SystemPromptBuilder.cs

@@ -61,10 +61,10 @@ public partial class ChatWindow
         sb.AppendLine($"Today's date: {DateTime.Now:yyyy년 M월 d일} ({DateTime.Now:yyyy-MM-dd}, {DateTime.Now:dddd}).");
         sb.AppendLine("Available skills: excel_create (.xlsx), docx_create (.docx), csv_create (.csv), markdown_create (.md), html_create (.html), script_create (.bat/.ps1), document_review (품질 검증), format_convert (포맷 변환).");
 
-        sb.AppendLine("\nOnly present a step-by-step plan when the user explicitly asks for a plan or when the task is too ambiguous to execute safely.");
+        sb.AppendLine("\nOnly present a step-by-step plan when the user explicitly asks for a plan or a short execution outline is required to unblock the task safely.");
         sb.AppendLine("For ordinary Cowork requests, proceed directly with the work and focus on producing the real artifact.");
         sb.AppendLine("If the user asks for a brand-new report, proposal, analysis, manual, or other document and does not explicitly ask to reference workspace files, do NOT start with glob, grep, document_read, or folder_map.");
-        sb.AppendLine("In that case, go straight to document_plan when helpful, then immediately call the creation tool such as docx_create, html_create, markdown_create, excel_create, or document_assemble.");
+        sb.AppendLine("In that case, go straight to the creation tool. Use document_plan only when it materially improves a multi-section document.");
         sb.AppendLine("After creating files, summarize what was created and include the actual output path.");
         sb.AppendLine("Do not stop after a single step. Continue autonomously until the request is completed or a concrete blocker (permission denial, missing dependency, hard error) is encountered.");
         sb.AppendLine("When adapting external references, rewrite names/structure/comments to AX Copilot style. Avoid clone-like outputs.");
@@ -239,7 +239,7 @@ public partial class ChatWindow
         sb.AppendLine("3. IMPLEMENT: Apply the smallest safe edit. Use file_edit for existing files and file_write for new files.");
         sb.AppendLine("4. VERIFY: Run build_run/test_loop when the change affects buildable or testable behavior, or when the user explicitly asks for verification.");
         sb.AppendLine("   - Use git_tool(diff) when it helps confirm the final change set or explain what changed.");
-        sb.AppendLine("5. REPORT: Summarize what changed, what was verified, and any remaining risk.");
+        sb.AppendLine("5. REPORT: Summarize what changed and what was verified. Mention remaining risk only when something is actually unresolved.");
 
         sb.AppendLine("\n## Development Environment");
         sb.AppendLine("Use dev_env_detect to check installed IDEs, runtimes, and build tools before running commands.");