Extract the abandonment outcome strings to a single UnsuccessfulOutcome
Literal + UNSUCCESSFUL_OUTCOMES tuple in domain.abri.models, alongside
SlotCode. The differ's NEGATIVE_OUTCOMES now references the tuple and the
reason-code mapping is keyed on the Literal, so the two can no longer
drift and a mistyped outcome fails type-checking.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Replace the CARDED placeholder in abandon_reason_for_outcome with the
real outcome-to-code table from the client: No Answer->CARDED,
Tenant Refusal->CRA (ambiguous, client follow-up pending),
Not Viable->NOACCESS. Only these three outcomes trip the abandonment
trigger today; any empty/unrecognised outcome raises
UnmappableOutcomeError since abandon_reason is mandatory.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
