Increase default capacity in SearchIndexWrapper and enhance similarity calculation in calculate_similarity function to boost similarity score when all query words are found. Update MAX_WORDS and MAX_STRING_LEN definitions for improved handling.

similarity_search.h

@@ -5,8 +5,8 @@
 extern "C" {
 #endif
 
-#define MAX_STRING_LEN 100
-#define MAX_WORDS 20
+#define MAX_STRING_LEN 1000
+#define MAX_WORDS 100
 
 // Public API
 
@@ -19,7 +19,7 @@ typedef struct {
 
 // Structure to hold a search result
 typedef struct {
-    const char *string;
+    char *string;
     float similarity;
 } SearchResult;