[v2.0.0] Phase 17/18 완료 — 멀티에이전트·Reflexion·훅·스킬 고도화 릴리즈

Phase 17 완료 표시 (AGENT_ROADMAP.md 갱신):
- 17-A1/A2: Reflexion 자기성찰 메모리 + 검증 강제 확대
- 17-B1/B2: TaskState Working Memory + AgentEventLog .jsonl 영속화
- 17-C1/C2/C3: 훅 11개 이벤트·4타입(Command/Http/Prompt/Agent) 완비
- 17-D1/D2/D3: 스킬 fork 격리·paths 자동활성화·user-invocable 필터

Phase 18 완료 표시:
- 18-C2 (AiSnippetHandler), 18-C3 (QuickLinkHandler)

버전 v1.8.0 → v2.0.0:
- AxCopilot.csproj, Installer.csproj, SetupForm.cs, McpClientService.cs

DEVELOPMENT.md 버전 이력 v2.0.0 추가
Phase 17 섹션 헤더: 차기 개발 → ✅ 완료

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/AxCopilot.Installer/SetupForm.cs

@@ -15,7 +15,7 @@ namespace AxCopilot.Installer.Offline
     public class SetupForm : Form
     {
         private const string AppName = "AX Copilot";
-        private const string AppVer  = "1.8.0";
+        private const string AppVer  = "2.0.0";
         private const string Org     = "AX\uC5F0\uAD6C\uC18C AI\uD300";
         private const string RegUn   = @"Software\Microsoft\Windows\CurrentVersion\Uninstall\AxCopilot";
         private const string RegRun  = @"Software\Microsoft\Windows\CurrentVersion\Run";