Counters: a total padded wider than its index is none; report diff on shared ranges

- "Very Best Of The Who [01/010]", "[02/020]", "[07/070]": a posting tool's
  total of index×10, so every track had a total of its own and was a
  release of its own. A total zero-padded wider than its index is no
  counter ("[001/010]" still is).
- corpus_sweep.py report compares builds over the ranges both replayed (the
  corpus grows between builds).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

edge/src/names.rs

@@ -385,8 +385,9 @@ fn finish_remainder(s: &str) -> String {
 pub fn counter_total(subject: &str) -> Option<String> {
     let s = replace(&QUOTED, subject, " ", true);
     if let Some(c) = COUNTERS_CAPTURE.captures(s.as_bytes()) {
+        let index = c.get(1).or(c.get(3)).unwrap().as_bytes();
         let total = c.get(2).or(c.get(4)).unwrap().as_bytes();
-        return Some(js_number_string(number(total)));
+        return (!broken_total(index, total)).then(|| js_number_string(number(total)));
     }
     // Dates are no counters ("08-29-2011" read as 8 of 29).
     let undated = replace(&DATES, &s, " ", true);
@@ -959,6 +960,11 @@ fn name_like(b: &[u8]) -> bool {
     })
 }
 
+/// A total zero-padded wider than its index ("[01/010]"): a posting tool's mistake, no counter (brokenTotal).
+fn broken_total(index: &[u8], total: &[u8]) -> bool {
+    total.len() > 1 && total[0] == b'0' && total.len() > index.len()
+}
+
 /// The second number of the first \[(\d+)/(\d+)\].
 fn file_counter_total(s: &str) -> Option<i64> {
     let b = s.as_bytes();
@@ -973,6 +979,9 @@ fn file_counter_total(s: &str) -> Option<i64> {
         }
         let d = b[slash + 1..].iter().take_while(|c| c.is_ascii_digit()).count();
         if d > 0 && b.get(slash + 1 + d) == Some(&b']') {
+            if broken_total(&b[i + 1..slash], &b[slash + 1..slash + 1 + d]) {
+                return None;
+            }
             return js::parse_int(&s[slash + 1..slash + 1 + d]);
         }
     }
@@ -1283,6 +1292,14 @@ mod image_set_tests {
         assert_ne!(vlad("185", 77, "P8250001.JPG").key, vlad("234", 77, "P5300085.JPG").key);
     }
 
+    #[test]
+    fn totals_padded_wider_than_the_index_are_no_counters() {
+        let who = |i: u32, n: &str| release_identity("p", &format!(r#"Very Best Of The Who [{i:02}/{:03}] - "{n}" yEnc"#, i * 10), n);
+        assert_eq!(who(3, "The Who - 01 - I Can't Explain.mp3").key, who(4, "The Who - 02 - Anyway.mp3").key);
+        assert_eq!(who(3, "The Who - 01 - I Can't Explain.mp3").file_total, None);
+        assert_eq!(super::counter_total(r#"x [001/010] - "a.rar""#).as_deref(), Some("10"));
+    }
+
     #[test]
     fn dates_lead_no_numbered_items_and_repeated_names_go() {
         let show = |n: &str| release_identity("#sterntuary <aa@aa.com>", &format!(r#"#sterntuary - Jeff Rense Radio Program - "{n}" yEnc"#), n);