Create a new real call session

Attributes the session to exactly one of userId or email. A known email resolves to the existing user. When the email does not match an existing user in the caller's organization, a Member user is automatically provisioned (the account requires setting a password on first login) ONLY when the organization has enabled "Automatically create new users from real-call transcripts" in its settings and the email's domain matches one of the organization's configured email domains; otherwise the upload is rejected with 422 and neither a user nor a session is created.

Speaker-labeled SRT: a standard SRT transcript may carry a label: message prefix on the first content line of each cue. A label that normalizes (trim + lowercase) to a valid email whose domain matches the organization's configured domains (or any email when no domains are configured) marks the speaker as internal (sales side); a non-matching email marks an external client whose turns are never attributed and never provisioned. Internal speakers are attributed to the matching Jam user (auto-provisioned under the same organization opt-in as the email parameter when unknown; turns stay unattributed when provisioning is disabled or impossible) and recorded as session participants. A non-email label (e.g. Client:) is stripped from the content without attribution, but only when its colon is followed by whitespace or ends the line (prose colons such as 10:30 or URLs are left intact).

Rep scoring: the userId/email parameter designates the scored rep. Scoring, KPIs and dashboards attribute exclusively to the rep; other labeled speakers are recorded as participants only (see participantUserIds on the session).