添加联想

CustomKeyboard/Manager/KBSuggestionEngine.h

@@ -0,0 +1,23 @@
+//
+//  KBSuggestionEngine.h
+//  CustomKeyboard
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// Simple local suggestion engine (prefix match + lightweight ranking).
+@interface KBSuggestionEngine : NSObject
+
++ (instancetype)shared;
+
+/// Returns suggestions for prefix (lowercase expected), limited by count.
+- (NSArray<NSString *> *)suggestionsForPrefix:(NSString *)prefix limit:(NSUInteger)limit;
+
+/// Record a selection to slightly boost ranking next time.
+- (void)recordSelection:(NSString *)word;
+
+@end
+
+NS_ASSUME_NONNULL_END