Add Katakana, Korean and Thai games and difficulty levels

- decks package: Hiragana, Katakana, Hangul jamo and Thai consonants
  (Thai readings carry the letter's name word, since sounds repeat)
- Per-script fonts: Jua for Hangul, Mali for Thai (both OFL)
- Memory game works with any deck; Easy 3x4, Normal 4x6, Hard 4x8
- Language menus pick a deck and difficulty, with number/arrow key shortcuts
- Tests cover every deck, difficulty, and font glyph coverage

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

HanjaKanaMun.dSYM/Contents/Info.plist

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+	<dict>
+		<key>CFBundleDevelopmentRegion</key>
+		<string>English</string>
+		<key>CFBundleIdentifier</key>
+		<string>com.apple.xcode.dsym.HanjaKanaMun</string>
+		<key>CFBundleInfoDictionaryVersion</key>
+		<string>6.0</string>
+		<key>CFBundlePackageType</key>
+		<string>dSYM</string>
+		<key>CFBundleSignature</key>
+		<string>????</string>
+		<key>CFBundleShortVersionString</key>
+		<string>1.0</string>
+		<key>CFBundleVersion</key>
+		<string>1</string>
+	</dict>
+</plist>