t-paliad-222 follow-up — wire the .code field populated by
PopulateProjectCodes into the project-detail header. Shows next to
the manual reference when distinct, hidden when they match (avoid
duplication) or when no segments resolved. CSS `.entity-ref-code`
adds bracket-styling so the user knows the value is derived rather
than typed.
Also extends the frontend Project interface with code + opponent_code
to make TypeScript surface the new fields cleanly across consumers.
mAi
225204cf1c