Adds `CardDefinition.source_rating: Option<u8>` -- the authoritative rating a
NON-PLAYER definition carries in EA's own tables (a staff card's `value` from
managercards/*coachcards/physiocards, a consumable's rating).
WHY NOT `overall`. `overall` feeds quick-sell pricing and squad projection, and
it is deliberately 0 for every non-player. Reusing it would silently revalue
staff, which is out of scope for the manager-contract milestone. `source_rating`
is a separate number read only by tier rules, so both pricing paths stay
byte-identical: Core's `quick_sell_coins(card.overall)` and the host's
`legacy_discard_value(item.rating)` see exactly what they saw before, and
`effective_overall` is unchanged.
MUST stay Option: CardDefinition has no `#[serde(default)]`, so a required field
would reject every already-shipped content pack, whereas a missing Option
deserializes to None. A test pins that backwards compatibility, because it is
the property that lets Core and the emitter be deployed independently.
No migration: Core does not persist definitions at all -- they are JSON content
packs parsed at startup into an immutable in-memory CardDb. `/collection`
embeds the serialized definition wholesale, so `card.source_rating` reaches the
host with no projection change.
Production real-profile content is loaded via an explicit path, NOT the dev-only
OPENFUT_DEV_CONTENT_GAMES gate:
- Config.content_packs from env OPENFUT_CONTENT_PACKS (comma-sep file paths).
- CardDb::load_pack(path): merge an explicit CardDefinition[] production pack.
- app::build loads dev packs then production packs.
Preflight (app::build, always on): every owned_cards.card_id MUST resolve to a
loaded CardDefinition. A real profile with owned players but even ONE missing
definition fails LOUDLY instead of silently serving an empty /collection; an
empty owned_cards table (fresh DB / tests) passes.
2 preflight integration tests (missing def fails, loaded def passes). clippy
-D warnings clean; full suite 151 tests green.
funman300