Install Vim plugins by direct git clone instead of interactive :PluginInstall

Vundle's :PluginInstall hangs when stdout is not a TTY (e.g. automated
runs on Alpine). Clone each plugin declared in .vimrc directly instead
- unattended, idempotent, and skips the Vundle self-reference.

install.sh

@@ -188,25 +188,43 @@ deploy_dotfiles() {
 # Vim plugins via Vundle
 # ----------------------------------------------------------------------------
 install_vim_plugins() {
-    info "Installing Vim plugins (Vundle)"
+    info "Installing Vim plugins"
     if [ ! -f "$HOME/.vimrc" ]; then
         warn "No .vimrc deployed; skipping Vim plugin install."
         return 0
     fi
+
     VUNDLE_DIR="$HOME/.vim/bundle/Vundle.vim"
     if [ ! -d "$VUNDLE_DIR" ]; then
         info "Cloning Vundle"
         run git clone --depth=1 https://github.com/VundleVim/Vundle.vim.git "$VUNDLE_DIR"
-    fi
-    info "Running :PluginInstall (idempotent)"
-    # Headless, tolerant of the 'dracula' colorscheme-not-found warning at startup.
-    if [ "$DRY_RUN" -eq 1 ]; then
-        printf '   $ vim +PluginInstall +qall\n'
     else
-        vim +PluginInstall +qall >/dev/null 2>&1 || \
-            warn "Vim PluginInstall exited non-zero; verify with: vim +PluginInstall +qall"
+        ok "Vundle already present, skipping"
     fi
-    ok "Vim plugins installed"
+
+    # Rather than drive Vundle's interactive :PluginInstall (which hangs when
+    # stdout is not a TTY), clone each plugin declared in .vimrc directly.
+    # This is fully unattended and idempotent.
+    info "Cloning Vim plugins declared in .vimrc"
+    # Extract 'Plugin/Repo' and 'Plugin user/repo' style declarations,
+    # normalise to an https URL, skip the Vundle self-reference.
+    plugins=$(grep -oE "Plugin '[^']+'" "$HOME/.vimrc" \
+        | sed -E "s/Plugin '//; s/'//" \
+        | grep -v "^VundleVim/Vundle.vim$")
+    for repo in $plugins; do
+        name=$(basename "$repo")
+        dir="$HOME/.vim/bundle/$name"
+        if [ -d "$dir" ]; then
+            ok "$name already present, skipping"
+            continue
+        fi
+        info "Cloning $repo"
+        if run git clone --depth=1 "https://github.com/$repo.git" "$dir"; then
+            ok "$name installed"
+        else
+            warn "Failed to clone $repo (non-fatal)."
+        fi
+    done
 }
 
 # ----------------------------------------------------------------------------