Initial commit.

Packages/Localization/Sources/Public/Enumerations/CatalogState.swift

@@ -0,0 +1,12 @@
+/// The outcome of reading a String Catalog from its bundle.
+///
+/// The package degrades gracefully when a catalog cannot be read — lookups return their keys and the language list falls back to the default language — so
+/// nothing fails at the call site. This state is the signal a server checks once at startup to warn before visitors ever see raw localization keys.
+public enum CatalogState: Equatable, Sendable {
+    /// The catalog was found and decoded; its entries are resolvable.
+    case loaded
+    /// No catalog resource exists in the bundle; every lookup returns its key.
+    case missing
+    /// The catalog resource exists but is not valid `.xcstrings` JSON; every lookup returns its key.
+    case undecodable
+}