fix: fix nested references?

src/csv-loader/loader.ts

@@ -395,12 +395,24 @@ export function parseCsv(
     return config;
   });
 
-  // Collect all referenced tables
+  // Collect all referenced tables (including nested references in tuples/arrays)
   const references = new Set<string>();
+  function collectReferences(schema: Schema): void {
+    if (schema.type === 'reference') {
+      references.add(schema.tableName);
+    } else if (schema.type === 'tuple') {
+      schema.elements.forEach(el => collectReferences(el.schema));
+    } else if (schema.type === 'array') {
+      collectReferences(schema.element);
+    } else if (schema.type === 'union') {
+      schema.members.forEach(m => collectReferences(m));
+    }
+  }
   propertyConfigs.forEach(config => {
     if (config.isReference && config.referenceTableName) {
       references.add(config.referenceTableName);
     }
+    collectReferences(config.schema);
   });
 
   const dataRows = records.slice(2);

src/parser.ts

@@ -306,7 +306,8 @@ class Parser {
     }
 
     if (identifier.length === 0) {
-      throw new ParseError('Expected schema or named schema', this.pos);
+      const schema = this.parseSchema();
+      return { schema };
     }
 
     this.skipWhitespace();

src/validator.ts

@@ -265,6 +265,10 @@ class ValueParser {
     let hasOpenBracket = false;
     const elementIsTupleOrArray = schema.element.type === 'tuple' || schema.element.type === 'array';
 
+    if (this.pos >= this.input.length || !this.input.trim()) {
+      return [];
+    }
+
     if (this.peek() === '[') {
       if (!elementIsTupleOrArray) {
         this.consume();