impl/js/src/email.mjs (written from CONTRACT.md + FLOWS.md): both roles,
case store, handoffs, timeouts, one-cap outbox with holding, authorization.
Passes all 22 flows from the bundle; with the JS master all 12 slave
flows (no Python contract party). Writing it found six contract gaps,
folded into the draft as MCP-1..6 (acknowledgement, details convention,
resume names the outcome, opaque case key, error table, transfer
reporting); flows now check outcome tokens, not reference prose. A
mutation check found a missing flow: a-008 (per-type master check).
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mas_modes.mailer.Mailer is the only outbound path (own SQLite + lock),
shared by the ticket service and both EmailMode roles. Over the cap mail
is held and reported (send-cap-reached, held); held mail is purged after
email-held-duration-max (7d) and not stored beyond emails-held-storage-max
(100MB). The ticket service's legacy outbox is imported once so the live
count carries over (checked on a copy of the live DB: 4 sent). Entrypoint
passes the cap and both limits.
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CONTRACT.md section 7 (founder-reviewed): pairwise HMAC-SHA256 over
TIMESTAMP.BODY in MAS-Modes-* headers, 300 s window; master commands only
from the configured master; statuses only at the handoff's tokenized URL
from its peer; primed webhooks must name a known peer. mas_modes.signing,
signed contract.post, authenticating json_server, EmailMode/stubs/gateway
signing. conformance/auth.json vectors + 7 authorization flows.
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mas-modes-v0.1-spec/ (contract, message + gateway-event schemas, transition
table, message fixtures, statute) vendored into mas_modes. EmailMode
implements the master role over the reference ticket service (MasterStore):
handoff, negotiation by email, statuses in the thread, timeouts, resume by
email, principle 10 shared via mas_modes.mailer.
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