T36: review round 1: every pair of a known key is checked before the last of each key wins, a clear's too, so a report that breaks a rule anywhere drops whole; a sequence counts its length from OSC through ST with the controls its body skips; the scanners pass DEL and high bytes by in an escape as vte does, so ESC DEL c resets the records too

src/term/prompts.rs

@@ -105,6 +105,14 @@ impl Prompts {
                 self.out.push(byte);
                 State::Escape { sent }
             }
+            // vte passes DEL and high bytes by in the escape: the ESC goes on, then they.
+            (State::Escape { sent }, 0x7f..=0xff) => {
+                if !sent {
+                    self.release();
+                }
+                self.out.push(byte);
+                State::Escape { sent: true }
+            }
             (State::Escape { .. }, _) => {
                 // A full reset clears the link the parser writes with.
                 if byte == b'c' {