Moves the two outbound-side consts out of models/outbound.ts and into
schemas/primitives/outbound-protocol.ts. Renames the export to
OutboundProtocols to disambiguate from the inbound Protocols const
(different key casing — PascalCase vs ALL CAPS — and partly different
member set, so they cannot share a single const).
OutboundsTab.tsx keeps its 15+ Protocols.X call sites by aliasing
the import. FinalMaskForm.tsx and BasicsTab.tsx swap directly.
Drops a stale `as string[]` cast in BasicsTab that no longer fits
the new readonly-tuple typing.
After this commit only the two big form modals
(InboundFormModal/OutboundFormModal) plus three intentional parity
tests still import from @/models/.
