fix(githooks): use simple NVM loading (same as .bashrc)

Replace complex pnpm-finding fallback with the same NVM loading
syntax used in ~/.bashrc. Removes the multiple candidate-path
fallback loop in favor of a clean shell snippet.

.githooks/post-receive

@@ -37,27 +37,11 @@ else
 fi
 cd "$REPO_TOPLEVEL" || { echo "FATAL: cannot cd to $REPO_TOPLEVEL" >&2; exit 1; }
 
-# 加**载** nvm（**非**交互 shell **不**自动 source .bashrc）
-# nvm 是 POSIX **兼**容，但**有**个**问**题：它**会** [ -n "$BASH_VERSION" ] **检**查，
-# 在 dash **下** nvm 函**数**注**册**失败（pnpm **仍**然**找**不**到**）。
-# 所以策略是：尝**试** source nvm，**如**果失**败**则**直**接**找** pnpm **可执**行文件路径。
-PNPM_BIN="$(command -v pnpm 2>/dev/null || true)"
-if [ -z "$PNPM_BIN" ] && [ -s "$HOME/.nvm/nvm.sh" ]; then
-    \. "$HOME/.nvm/nvm.sh" 2>/dev/null || true
-    PNPM_BIN="$(command -v pnpm 2>/dev/null || true)"
-fi
-# 兜底：**直**接**搜**索 **常**见 nvm 路**径**
-if [ -z "$PNPM_BIN" ]; then
-    for candidate in /root/.nvm/versions/node/*/bin/pnpm "$HOME/.local/share/pnpm/pnpm" /usr/local/bin/pnpm; do
-        if [ -x "$candidate" ]; then
-            PNPM_BIN="$candidate"
-            break
-        fi
-    done
-fi
-if [ -n "$PNPM_BIN" ]; then
-    export PATH="$(dirname "$PNPM_BIN"):$PATH"
-fi
+# 加**载** nvm（**非**交互 shell **不**自动 source .bashrc，pnpm **所**以**找**不**到**）
+# 同 .bashrc **里**的 NVM **加**载逻辑
+export NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
+[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
 
 # ============================================================
 # 1. init_log_file —— 定**义** LOG_FILE + 创**建** logs/ 目**录**