comment: trim two 5-line inline blocks to 3 (surfaced by the more-accurate central comment-guard lexer)

src/disc/extract.rs

@@ -1592,11 +1592,9 @@ mod tests {
         assert!(matches!(err, Error::DirNameCollision { .. }));
     }
 
-    // Two disc names differing only by CASE fold to one host file on a case-
+    // Two names differing only by CASE collide on a case-INSENSITIVE host (macOS
-    // INSENSITIVE host (macOS APFS / Windows NTFS) — that must be a collision,
+    // APFS / Windows NTFS) but coexist on a case-SENSITIVE one, so the extract
-    // not a silent overwrite reported clean. On a case-SENSITIVE volume the two
+    // must abort on the former and not the latter — outcome tracks the real volume.
-    // are distinct files that coexist, so the extract must NOT abort. The
-    // outcome tracks the REAL target volume, tested by probing it.
     #[test]
     fn names_differing_only_by_case_collide_only_on_a_case_insensitive_host() {
         let root = DirSpec {

src/mux/timeline.rs

@@ -2089,11 +2089,9 @@ mod tests {
         );
     }
 
-    // A provisional must retire even PAST the epoch-history cap. Epoch identity
+    // A provisional must retire even PAST the epoch-history cap: the old identity
-    // was `epoch_offsets.len()`, which pins at MAX_EPOCHS once the ring is full,
+    // `epoch_offsets.len()` pinned at MAX_EPOCHS once the ring filled, so a
-    // so a provisional captured then compared equal forever and never retired —
+    // provisional compared equal forever; monotonic `epoch_seq` fixes that.
-    // drifting that track away from every other for the rest of the title. The
-    // monotonic `epoch_seq` keeps distinguishing epochs past the cap.
     #[test]
     fn a_provisional_retires_even_past_the_epoch_history_cap() {
         let mut tc = TimelineContinuity::new();