The fixed Lucien conv:HASH: the first 8 lowercase hex digits of the conversation UUID with hyphens stripped (<8hex>-<4hex>-… → <8hex>). An already-8-char hex id passes through unchanged.
conv:HASH
<8hex>-<4hex>-…
<8hex>
The fixed Lucien
conv:HASH: the first 8 lowercase hex digits of the conversation UUID with hyphens stripped (<8hex>-<4hex>-…→<8hex>). An already-8-char hex id passes through unchanged.