Tapping an old get_clients_for_* inline keyboard re-fetched the inbound
after the keyboard lookup, discarding the error; if the row vanished
between the two reads, the second GetInbound returned nil and
inbound.Remark panicked. The callback handler runs on a bare goroutine
with no recover(), so that panic killed the whole panel process.
Fetch the inbound once in a shared chooseInboundClient helper that
answers an error callback on a missing row, and pass the row down to
getInboundClientsFor instead of re-reading the DB, removing the
between-reads window. Route all three OnReceive handler paths through a
recover() barrier so no handler panic can take down the process, and log
the GetInbound failure instead of silently swallowing it.
When users click Refresh buttons in the Telegram bot (usage_refresh,
client_refresh, ips_refresh, onlines_refresh), editMessageText and
editMessageReplyMarkup are always called even when the content has not
changed. Telegram returns a 400 "message is not modified" error which
was logged as Warning, cluttering the logs on every refresh click.
Add isTelegramNotModifiedError helper that detects this specific
Telegram API error and logs it at Debug level instead of Warning.
BlindMaster24