#12572: status: mask phone numbers in terminal channel output

Mask phone numbers in terminal status output so full WhatsApp/E.164 numbers are not exposed in clear text. Changes: - status-all/channels: mask linked self phone - channels/status: mask allowFrom phone samples Why: reduce accidental disclosure risk while preserving operator context. <!-- greptile_comment --> <h2>Greptile Overview</h2> <h3>Greptile Summary</h3> This PR updates CLI status output to avoid printing full phone numbers in clear text. Specifically: - `channels status` now masks `allowFrom` sample entries when they look like phone numbers. - `status --all` channel table now masks the linked account’s `selfE164` value before rendering. The changes are localized to terminal output formatting and don’t affect gateway calls or persisted configuration; they only modify what operators see in status output. <h3>Confidence Score: 4/5</h3> - Generally safe to merge; changes are output-only but redaction strength likely needs adjustment to meet the stated disclosure-reduction goal. - The PR is small and limited to terminal formatting, so runtime risk is low. The main concern is functional: the current masking still exposes a stable prefix+suffix that may be considered sensitive given the PR’s purpose; if the project expects stronger redaction, this should be updated before merge. - src/commands/channels/status.ts; src/commands/status-all/channels.ts <!-- greptile_other_comments_section --> _{(2/5) Greptile learns from your feedback when you react with thumbs up/down!} <!-- /greptile_comment -->