v2.0: wire nvm lazy-load into .zshrc (completes reproducible build)

dotfiles/.zshrc

@@ -183,3 +183,21 @@ show-snapshot() {
 bindkey -e
 bindkey '^[[1;5C' forward-word
 bindkey '^[[1;5D' backward-word
+
+# ── nvm (lazy-loaded for fast shell startup) ──────────────────────────────────
+export NVM_DIR="$HOME/.nvm"
+if [[ -s "$NVM_DIR/nvm.sh" ]]; then
+    # Add default node to PATH immediately so node CLIs work pre-load
+    if [[ -f "$NVM_DIR/alias/default" ]]; then
+        _def="$(cat "$NVM_DIR/alias/default" 2>/dev/null)"
+        [[ -d "$NVM_DIR/versions/node/v$_def/bin" ]] && \
+            export PATH="$NVM_DIR/versions/node/v$_def/bin:$PATH"
+    fi
+    # Lazy-load full nvm on first explicit use
+    nvm() {
+        unset -f nvm
+        . "$NVM_DIR/nvm.sh"
+        nvm "$@"
+    }
+fi
+