Glossary

Term	Meaning in Zukan
Card	Logical game-level card, with localized names and attributes
Printing	Edition of a card in a particular set, potentially distinguished by rarity/art
Variant	Printing combined with finish, condition and owned-card language
Set code	Human-facing expansion identifier; not globally unique
External ID	Source-specific identifier stored alongside local IDs
Collector number	Number printed on a card; not necessarily a unique printing key
Finish	Game-defined treatment/edition vocabulary, such as foil or first edition
Rarity	Printing classification; can have language-specific pictograms
Stock transaction	Signed quantity change that can be reversed subject to current stock
Manual price	Per-copy override for valuation, not purchase cost
Snapshot	Quote for a printing/finish/source on a date
Main source	Preferred market for valuation and sorting, with per-game capability fallback
Catalog source	Upstream card metadata provider
Price source	Marketplace identity/currency/link and optional quote-fetch implementation
Secondary source	Supplemental/cross-check data source following the primary catalog
Gap source	Source used to fill absent details/identifiers, often with a request budget
Arbitration	Persisted administrator choice for a source disagreement
Stale card	Card missed by a sync or missing supported details/images
OIDC	OpenID Connect authentication through an external identity provider
Issuer / subject	Pair identifying the SSO account; email is not the account key
PKCE	Proof Key for Code Exchange used with authorization code login
Worker	Background process executing automatic and queued synchronization
Maintenance	Load-triggered restricted service for ordinary users during slow catalog work
UI language	Interface language and localized display preference
OCR script	Android text model family; independent of the inventory language