cross-platform dotfiles: OS별 분기 및 자동 설치 스크립트 추가

- config.fish: macOS/Linux 분기 (PATH, credential, clipboard, 컨테이너)
- tmux.conf: fish 경로 자동감지, pbcopy/xclip 분기
- gitconfig: credential helper를 .gitconfig.local로 분리
- install.sh: 전체 개발환경 원스톱 설치 (fish, nvim, kitty, fzf, rg, fd, delta, lazygit, go, rust, uv, claude 등)

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

fish/.config/fish/config.fish

@@ -1,52 +1,57 @@
+# OS 감지
+set -g __os (uname)
+
 # Fix fish_complete_path (중복 방지)
 if not contains ~/.config/fish/completions $fish_complete_path
     set -g fish_complete_path ~/.config/fish/completions $fish_complete_path
 end
 
 if status is-interactive
-    # Commands to run in interactive sessions can go here
     # Set default Node.js version
     nvm use 20 --silent
-    # Add uv to PATH
-    fish_add_path $HOME/.local/bin
 
-    # kitty integration 최적화
+    # 공통 PATH
+    fish_add_path $HOME/.local/bin
+    fish_add_path $HOME/.cargo/bin
+    test -d /usr/local/go/bin && fish_add_path /usr/local/go/bin
+
+    # ── OS별 PATH ──
+    if test "$__os" = Linux
+        fish_add_path $HOME/.local/kitty.app/bin
+    else if test "$__os" = Darwin
+        fish_add_path /Users/kaffa/.antigravity/antigravity/bin
+    end
+
+    # ── kitty integration ──
     if test "$TERM" = xterm-kitty
-        # kitty shell integration 설정
         alias icat="kitty +kitten icat"
         alias kdiff="kitty +kitten diff"
-
-        # 빠른 디렉토리 이동 (kitty의 프롬프트 마킹 활용)
         bind \cg 'history | fzf | read -l result; and commandline $result'
-
-        # 파일 미리보기
         alias preview="fzf --preview 'if test -d {}; eza -la {}; else; bat --color=always {}; end'"
 
-        # tmux 유틸리티 함수들
+        # tmux 유틸리티
         alias tm="tmux"
         alias tma="tmux attach-session -t"
         alias tmn="tmux new-session -s"
         alias tml="tmux list-sessions"
         alias tmk="tmux kill-session -t"
 
-        # kitten 유틸리티 alias들
+        # kitten 유틸리티
         alias clipboard="kitty +kitten clipboard"
         alias img="kitty +kitten icat"
         alias unicode="kitty +kitten unicode_input"
         alias hgrep="kitty +kitten hyperlinked_grep"
-
-        # 이미지 갤러리 함수 (간단한 alias로 변경)
         alias imgls="find . -maxdepth 1 -type f \( -name '*.png' -o -name '*.jpg' -o -name '*.jpeg' -o -name '*.gif' -o -name '*.webp' \) | head -5 | xargs -I {} kitty +kitten icat --align center {}"
     end
 end
 
-# Vault Configuration
+# ══════════════════════════════════════════════════════════════════
+# 환경 변수 (공통)
+# ══════════════════════════════════════════════════════════════════
+
 set -x VAULT_ADDR "https://vault.anvil.it.com"
 set -x VAULT_TOKEN "hvs.o7JrzES15uuXRmvlKAJKEaTv"
-
-# Gitea Configuration
 set -gx GITEA_URL "https://gitea.anvil.it.com"
-set -gx GITEA_TOKEN (security find-internet-password -s gitea.anvil.it.com -a kaffa -w 2>/dev/null)
 
 # Cloudflare Configuration - Lazy Loading
 function load_cloudflare_credentials
@@ -57,41 +62,54 @@ function load_cloudflare_credentials
     end
 end
 
-# Auto-load when using cf command
 if command -v cf >/dev/null
     alias cf='load_cloudflare_credentials && command cf'
 end
 
+# ══════════════════════════════════════════════════════════════════
+# Alias (공통)
+# ══════════════════════════════════════════════════════════════════
+
 alias vi=nvim
 alias ssh=tssh
-alias docker "limactl shell docker -- docker"
-alias podman "limactl shell podman -- podman"
-alias ss='netstat -an'
-
-# Set default editor for Claude Code /memory command
 set -Ux VISUAL nvim
 set -Ux EDITOR nvim
 
-# Added by Antigravity
-fish_add_path /Users/kaffa/.antigravity/antigravity/bin
+# ══════════════════════════════════════════════════════════════════
+# OS별 설정
+# ══════════════════════════════════════════════════════════════════
+
+if test "$__os" = Darwin
+    # macOS: keychain에서 Gitea 토큰 로드
+    set -gx GITEA_TOKEN (security find-internet-password -s gitea.anvil.it.com -a kaffa -w 2>/dev/null)
+    # macOS: Lima 기반 컨테이너
+    alias docker "limactl shell docker -- docker"
+    alias podman "limactl shell podman -- podman"
+    alias ss='netstat -an'
+else if test "$__os" = Linux
+    # Linux: 환경변수 또는 vault에서 Gitea 토큰 로드
+    if not set -q GITEA_TOKEN
+        set -gx GITEA_TOKEN (vault kv get -field=api_token secret/apps/gitea 2>/dev/null || echo "")
+    end
+    alias ss='ss -tulnp'
+end
 
 # ══════════════════════════════════════════════════════════════════
 # Claude Code tmux 단축키
 # ══════════════════════════════════════════════════════════════════
 
-# Claude 세션 빠른 시작
 alias tc='tmux-claude'
-
-# 현재 디렉토리에서 Claude 세션
 alias tcc='tmux-claude (pwd)'
 
-# tmux 패널 내용 복사 (최근 1000줄)
 function tcopy
-    tmux capture-pane -pS -1000 | pbcopy
+    if test "$__os" = Darwin
+        tmux capture-pane -pS -1000 | pbcopy
+    else
+        tmux capture-pane -pS -1000 | xclip -selection clipboard
+    end
     echo "패널 내용 복사됨 (최근 1000줄)"
 end
 
-# Claude 응답 검색 (tmux 히스토리에서)
 function csearch
     tmux copy-mode
     tmux send-keys "?" "$argv" Enter