更新 RTK 使用说明及 deploy.ps1 自动初始化 hook

- README: 修正 RTK 描述（token hook 而非 token 计数工具），补充 rtk gain/graph 用法
- deploy.ps1: 安装 RTK 后自动运行 rtk init -g --auto-patch，注册 Claude Code PreToolUse hook
- deploy.ps1: cargo env 同时写入 ~/.bashrc 和 ~/.profile（修复 root login shell PATH）

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

claude-dev-stack/deploy.ps1

@@ -674,7 +674,8 @@ source ~/.cargo/env
 rustc --version
 "@
     Invoke-WSL $installRustCmd
-    Invoke-WSL "grep -q 'cargo/env' ~/.bashrc || echo 'source ~/.cargo/env 2>/dev/null || true' >> ~/.bashrc" -IgnoreError | Out-Null
+    Invoke-WSL "grep -q 'cargo/env' ~/.bashrc  || echo 'source ~/.cargo/env 2>/dev/null || true' >> ~/.bashrc"  -IgnoreError | Out-Null
+    Invoke-WSL "grep -q 'cargo/env' ~/.profile || echo 'source ~/.cargo/env 2>/dev/null || true' >> ~/.profile" -IgnoreError | Out-Null
     Write-OK "Rust 安装完成"
 }
 
@@ -704,6 +705,10 @@ CARGO_NET_GIT_FETCH_WITH_CLI=true cargo install --git https://github.com/rtk-ai/
     }
 }
 
+# rtk init -g：安装 Claude Code PreToolUse hook（幂等）
+Invoke-WSL ". ~/.cargo/env 2>/dev/null; rtk init -g --auto-patch 2>/dev/null || true" -IgnoreError | Out-Null
+Write-OK "rtk hook 已注册 (rtk init -g)，重启 Claude Code 后生效"
+
 # ══════════════════════════════════════════════════════════════
 #  Step 8: PowerShell Profile 配置
 # ══════════════════════════════════════════════════════════════