Add array support for local/export/readonly builtins

Add array length syntax ${arr[#]}

Map read path now expands variables before splitting on ., fixing map "$node" with dotted paths

Map assignment path uses quote-aware token splitting, enabling quoted keys like "--type="

Completion errors now display above prompt instead of being overwritten

Fix nested if/fi parser bug when closing keywords appear on separate lines

Add QuoteState enum, replacing ad-hoc quote tracking booleans across lexer, highlighter, and expansion

Add split_tk_at/split_tk for quote-aware token splitting with span preservation

Refactor setup_builtin to accept optional argv for deferred expansion

Add ariadne dependency (not yet wired up)

src/parse/mod.rs

@@ -1035,6 +1035,7 @@ impl ParseStream {
       };
       cond_nodes.push(cond_node);
 
+			self.catch_separator(&mut node_tks);
       if !self.check_keyword("elif") || !self.next_tk_is_some() {
         break;
       } else {
@@ -1043,6 +1044,7 @@ impl ParseStream {
       }
     }
 
+		self.catch_separator(&mut node_tks);
     if self.check_keyword("else") {
       node_tks.push(self.next_tk().unwrap());
       self.catch_separator(&mut node_tks);