fix(lucene adapter and search tests): Improve range query parsing in Lucene adapter and expand search test coverage

ts/classes.lucene.adapter.ts

@@ -290,11 +290,11 @@ export class LuceneParser {
     const includeLower = this.tokens[this.pos] === '[';
     const includeUpper = this.tokens[this.pos + 4] === ']';
 
-    this.pos++; // Skip open bracket
-
+    // Ensure tokens for lower, TO, upper, and closing bracket exist
     if (this.pos + 4 >= this.tokens.length) {
       throw new Error('Invalid range query syntax');
     }
+    this.pos++; // Skip open bracket
 
     const lower = this.tokens[this.pos];
     this.pos++;