AX Agent 메시지 액션과 실행 배너를 claw-code 쪽으로 축소

- 메시지 액션 바를 텍스트+아이콘 조합에서 작은 아이콘 버튼 중심으로 바꿔 본문 집중도를 높임

- Cowork/Code 실행 배너의 여백, 메타 텍스트, 토큰 배지, 파일 경로 표시를 더 얇게 줄여 보조 정보 밀도를 낮춤

- 검증: dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify\\ -p:IntermediateOutputPath=obj\\verify\\ (경고 0 / 오류 0)

docs/DEVELOPMENT.md

@@ -5,6 +5,7 @@
 - Document update: 2026-04-05 16:55 (KST) - Simplified AX Agent message rows and sidebar conversation items toward the `claw-code` reading model. Message bubbles now use tighter padding/radius/meta text, and conversation rows now prefer lightweight running/failure summary text over heavier success/failure badge cards.
 - Document update: 2026-04-05 17:03 (KST) - Reworked the AX Agent UI skeleton further toward `claw-code`: sidebar width and row heights were tightened, the collapsed icon rail and sidebar header were flattened, status strips were reduced, and the composer shell/input chrome was made slimmer and less card-like.
 - Document update: 2026-04-05 17:03 (KST) - Re-tuned responsive width calculation for the new shell so the message axis now scales up to `880` and the composer up to `820`, keeping both aligned on the same center line as the window narrows or expands.
+- Document update: 2026-04-05 17:12 (KST) - Reduced message action chrome and event-banner density further toward `claw-code`. Message actions now use compact icon-only buttons, and Cowork/Code event banners use tighter margins, smaller metadata, and lighter file-path summaries so execution status stays subordinate to the main transcript.
 - Document update: 2026-04-05 16:02 (KST) - Fixed the Cowork document execution handoff around `document_plan`. The loop no longer depends on broken localized marker strings to detect the scaffold/body block or the immediate-next-step hint; it now extracts body markers robustly and resolves the correct follow-up tool (`html_create`, `document_assemble`, `docx_create`, `markdown_create`) before re-prompting the model.
 - Document update: 2026-04-05 16:02 (KST) - Added `ResolveEffectivePlanMode(...)` so Cowork document/content tasks automatically use the `always` plan path even when the persisted plan mode is `off`. This brings Cowork closer to the `claw-code` expectation of plan-first execution for document-heavy work.
 - Document update: 2026-04-05 16:02 (KST) - Strengthened `BuildCoworkSystemPrompt()` so document/report/proposal/manual requests must produce an execution plan first and are not considered complete until a real output file path has been created or updated.