설정창에서 런처 색인 진행률과 남은 시간을 직접 표시하도록 개선

- IndexService에 LauncherIndexProgressInfo와 진행 이벤트를 추가해 전체 색인 중 진행률, 상태 문구, 예상 남은 시간을 계산하도록 변경
- 설정창 일반 탭의 인덱싱 속도 아래에 프로그레스바와 상태/상세 문구 패널을 추가하고 실시간으로 바인딩되도록 연결
- 전체 색인 완료 후 최근 색인 완료 요약과 검색 가능 항목 수를 같은 위치에 유지해 런처 하단 완료 문구 의존도를 낮춤
- README와 DEVELOPMENT 문서에 변경 이력 및 반영 시각을 기록

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

@@ -1,9 +1,12 @@
 # AX Copilot - 媛쒕컻 臾몄꽌
 
+- Document update: 2026-04-06 19:24 (KST) - Added `LauncherIndexProgressInfo` to `IndexService` so full launcher indexing now emits real progress/status updates, including estimated remaining time during path scans and a persisted completion summary after the run ends.
+- Document update: 2026-04-06 19:24 (KST) - Moved the user-facing launcher index progress surface into `SettingsWindow` under the index-speed control. The settings screen now shows a progress bar plus status/detail text while indexing is active and keeps the latest completion summary visible afterward.
 - Document update: 2026-04-06 18:46 (KST) - Tightened launcher indexing for real-world projects by ignoring `.git`, `.vs`, `node_modules`, `bin`, `obj`, `dist`, `packages`, `venv`, `__pycache__`, and `target` directories during both watcher handling and full scans. The launcher now skips noisy build/cache trees instead of reacting to them like searchable content.
 - Document update: 2026-04-06 18:46 (KST) - Replaced the launcher's recursive `EnumerateFiles(..., AllDirectories)` walk with an ignore-aware manual traversal so large repos avoid descending into dependency and build folders, and slowed the rainbow glow timer from `20ms` to `40ms`.
 - Document update: 2026-04-06 18:46 (KST) - Added a deferred responsive-layout timer to `ChatWindow` so AX Agent no longer calls `RenderMessages()` on every `SizeChanged` event. Resizing and layout changes are now coalesced into a single update after a short delay, reducing the heavy-window feel during agent-window manipulation.
 - Document update: 2026-04-06 19:02 (KST) - Fixed theme glow settings so they apply to already-open windows instead of only affecting the next open. `LauncherWindow` now listens to `SettingsChanged` and reapplies border, icon animation, rainbow glow, and selection glow immediately, while `ChatWindow.RefreshFromSavedSettings()` now re-evaluates chat rainbow glow during active streaming.
+- Document update: 2026-04-06 19:11 (KST) - Fixed the launcher index-status banner so it no longer lingers after indexing has effectively finished. Incremental watcher updates now refresh the in-memory/persisted index silently, and only full rebuild completion raises the visible `IndexRebuilt` signal consumed by `LauncherWindow`.
 - Document update: 2026-04-06 15:31 (KST) - Removed the visible outer border from the Cowork/Code footer permission selector so it reads as a flatter inline action in the bottom work bar.
 - Document update: 2026-04-06 15:26 (KST) - Reworked bottom guidance copy for Chat/Cowork/Code around the actual AX Agent behavior. Input watermark text now comes from a shared helper that considers the active tab and whether a work folder is selected, instead of using overly broad static text.
 - Document update: 2026-04-06 15:26 (KST) - Adjusted the selected preset guide so it prefers concise preset descriptions over raw placeholder prompts, keeping the footer guide and the composer watermark in distinct roles.