fix(styles): resolve style captions through in-app language

Style card descriptions were passed to Text as raw String keys, so they
never went through AppL10n. Resolve them (and the editor title) with the
in-app UI language override, matching the rest of the host app.

Co-authored-by: Rocky <hkgood@users.noreply.github.com>

OSGKeyboardTests/PolishStylesL10nTests.swift

@@ -0,0 +1,26 @@
+// PolishStylesL10nTests.swift
+// OSGKeyboard · Tests
+//
+// Style-card captions live in the host Localizable.strings table and must be
+// resolved through AppL10n so the in-app language override wins.
+
+@testable import OSGKeyboard
+@testable import OSGKeyboardShared
+import XCTest
+
+final class PolishStylesL10nTests: XCTestCase {
+    func testBuiltinStyleCardDescriptionsHonorInAppLanguage() {
+        let slugs = PolishStylePackCatalog.builtins.map {
+            String($0.id.dropFirst("builtin.".count))
+        } + ["custom"]
+
+        for slug in slugs {
+            let key = "polishStyles.\(slug).description"
+            let english = AppL10n.string(key, language: .english)
+            let chinese = AppL10n.string(key, language: .chinese)
+            XCTAssertNotEqual(english, key, "missing English copy for \(key)")
+            XCTAssertNotEqual(chinese, key, "missing Chinese copy for \(key)")
+            XCTAssertNotEqual(english, chinese, "\(key) is not bilingual")
+        }
+    }
+}