chore: initial commit — portable agent memory & skill scaffold

Extracted and cleaned up from a prior WSL/Windows agent-memory setup.
Contains only project-agnostic content:

- Claude_Memory/: feedback rules, user profile, reusable reference docs,
  session scratch space (claude_info/, claude_log/), mirrored skill defs
- caveman/: ultra-compressed communication mode skill + subcommands
- html-slide-deck/: self-contained HTML slide deck builder skill

Project-specific knowledge (previously mixed in) was moved out to each
project's own repository as part of this cleanup.

Claude_Memory/user_code_comment_style.md

@@ -0,0 +1,16 @@
+---
+name: 코드 주석 스타일 규칙
+description: 구현 시 주요 Logic→영문 주석, 필요시 Doxygen
+type: user
+---
+
+Impl: EN comment per major logic block. Doxygen for func/class/complex logic.
+
+**Applies to:** 모든 코드베이스 (프로젝트 무관, 2026-04-08 global 규칙으로 격상됨)
+
+**Why:** readability/doc quality 선호, all codebases.
+
+**How to apply:**
+- Every significant logic block → short English comment describing intent
+- Function/class definitions → Doxygen `/** @brief ... @param ... @return ... */`
+- Complex conditionals → inline comment: condition purpose