style(comments): remove decorative comment borders across files for consistency and cleaner code structure

src/state/engine.rs

@@ -479,11 +479,9 @@ mod tests {
         let n1 = NodeIndex::new(1);
         let n2 = NodeIndex::new(2);
 
-        // Push n0
         assert!(in_wl.insert(n0));
         wl.push_back(n0);
 
-        // Push n1
         assert!(in_wl.insert(n1));
         wl.push_back(n1);
 
@@ -492,7 +490,6 @@ mod tests {
         // wl still has only 2 entries
         assert_eq!(wl.len(), 2);
 
-        // Pop n0
         let popped = wl.pop_front().unwrap();
         in_wl.remove(&popped);
         assert_eq!(popped, n0);
@@ -503,7 +500,6 @@ mod tests {
         assert!(in_wl.insert(n0));
         wl.push_back(n0);
 
-        // Push n2
         assert!(in_wl.insert(n2));
         wl.push_back(n2);
 

src/state/transfer.rs

@@ -1558,9 +1558,7 @@ mod tests {
         ));
     }
 
-    // ─────────────────────────────────────────────────────────────────
     // chain-receiver decomposition + chain_proxies tracking
-    // ─────────────────────────────────────────────────────────────────
     //
     // These tests pin the contract that:
     //   1. `try_chain_decompose` parses dotted callees into receiver +
@@ -1981,12 +1979,10 @@ mod tests {
         assert!(lc.contains(ResourceLifecycle::CLOSED));
     }
 
-    // ─────────────────────────────────────────────────────────────────
     // Pointer-analysis: PtrProxyHint::FieldOnly routes
     // single-dot proxy-acquire to chain_proxies, suppressing the
     // SymbolId path that would otherwise mark the field-aliased local
     // as a leakable resource.
-    // ─────────────────────────────────────────────────────────────────
 
     #[test]
     fn field_only_hint_routes_single_dot_acquire_to_chain_proxies() {