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/get-shit-done/templates/retrospective.md

@@ -0,0 +1,54 @@
+# Project Retrospective
+
+*A living document updated after each milestone. Lessons feed forward into future planning.*
+
+## Milestone: v{version} — {name}
+
+**Shipped:** {date}
+**Phases:** {count} | **Plans:** {count} | **Sessions:** {count}
+
+### What Was Built
+- {Key deliverable 1}
+- {Key deliverable 2}
+- {Key deliverable 3}
+
+### What Worked
+- {Efficiency win or successful pattern}
+- {What went smoothly}
+
+### What Was Inefficient
+- {Missed opportunity}
+- {What took longer than expected}
+
+### Patterns Established
+- {New pattern or convention that should persist}
+
+### Key Lessons
+1. {Specific, actionable lesson}
+2. {Another lesson}
+
+### Cost Observations
+- Model mix: {X}% opus, {Y}% sonnet, {Z}% haiku
+- Sessions: {count}
+- Notable: {efficiency observation}
+
+---
+
+## Cross-Milestone Trends
+
+### Process Evolution
+
+| Milestone | Sessions | Phases | Key Change |
+|-----------|----------|--------|------------|
+| v{X} | {N} | {M} | {What changed in process} |
+
+### Cumulative Quality
+
+| Milestone | Tests | Coverage | Zero-Dep Additions |
+|-----------|-------|----------|-------------------|
+| v{X} | {N} | {Y}% | {count} |
+
+### Top Lessons (Verified Across Milestones)
+
+1. {Lesson verified by multiple milestones}
+2. {Another cross-validated lesson}