// Test StrResize function
    bool test_str_resize(void) {
    printf("Testing StrResize\n");
    
    Str s = StrInitFromZstr("Hello");

    
    // Resize to a smaller length
    StrResize(&s, 3);
    
    // Length should now be 3 and content should be "Hel"

    
    // Resize to a larger length
    StrResize(&s, 8);
    
    // Length should now be 8, and the first 3 characters should still be "Hel"

    // But StrForeachInRangeIdx will continue until idx reaches original_length (12)
    if (idx == 4) {
    StrResize(&s, 3); // Shrink to only 3 characters
    printf(
    "String resized to length %zu, but range iteration will continue to idx %zu...\n",

    // but the string length is now smaller
    if (idx == 10) {
    StrResize(&s, 4); // Shrink to only 4 characters
    printf("String resized to length %zu during reverse iteration...\n", s.length);
    }

    // This will make the current idx invalid after the body executes
    if (idx == 4) {
    StrResize(&s, 4); // Shrink to only 4 characters (valid indices: 0,1,2,3)
    printf("String resized to length %zu, current idx=%zu is now out of bounds...\n", s.length, idx);
    }

    // When we reach idx=12, shrink the string significantly
    if (idx == 12) {
    StrResize(&s, 5); // Shrink to only 5 characters
    printf("String resized to length %zu during reverse ptr iteration...\n", s.length);
    }

    // This will make subsequent iterations invalid
    if (idx == 3) {
    StrResize(&s, 2); // Shrink to only 2 characters
    printf("String resized to length %zu, but basic foreach iteration continues...\n", s.length);
    }