chore: quantlab-agent 프로젝트 초기 설정

agent_guide 템플릿 기반으로 프로젝트 구조 설정.
Gitea(quantlab-agent), Vikunja(project #15) 연동 완료.

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

.agent/skills/gsd-session-report/SKILL.md

@@ -0,0 +1,16 @@
+---
+name: gsd-session-report
+description: Generate a session report with token usage estimates, work summary, and outcomes
+---
+
+<objective>
+Generate a structured SESSION_REPORT.md document capturing session outcomes, work performed, and estimated resource usage. Provides a shareable artifact for post-session review.
+</objective>
+
+<execution_context>
+@.agent/get-shit-done/workflows/session-report.md
+</execution_context>
+
+<process>
+Execute the session-report workflow from @.agent/get-shit-done/workflows/session-report.md end-to-end.
+</process>