feat: UI 폰트 시스템 적용 및 HUD 타이포 보정

- 수성바탕체와 마루 부리 기반 UI 폰트 규칙, TMP 에셋 생성, 일괄 적용용 에디터 도구를 추가하고 로비 빌더도 같은 규칙을 따르도록 정리
- 기존 UI 프리팹과 Lobby/Test 씬의 TMP 폰트를 역할별로 교체하고 강조 텍스트와 HUD 계층에 맞는 자간을 반영
- 넥슨 Lv.2 고딕 검토 후 제외하고 액션바, HP/MP, 보스 체력바 숫자와 라벨을 마루 부리 기준으로 재조정
- Assets/_Game/Fonts 경로에 원본 폰트와 TMP 에셋을 정리하고 공유 Obsidian Vault 경로를 AGENTS에 기록
- Unity 리프레시와 HUD 보정 적용 후 콘솔 경고/에러 없는 상태를 확인

Assets/_Game/Prefabs/UI/UI_BossHealthBar.prefab

@@ -351,7 +351,15 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 1990594193549166204, guid: 9aea4cf6dad33b1419c4597a344a2e92, type: 3}
       propertyPath: m_fontSize
-      value: 42
+      value: 30
+      objectReference: {fileID: 0}
+    - target: {fileID: 1990594193549166204, guid: 9aea4cf6dad33b1419c4597a344a2e92, type: 3}
+      propertyPath: m_fontAsset
+      value: 
+      objectReference: {fileID: 11400000, guid: ef44cbe516f6f9f418375e5b2b73ad8d, type: 2}
+    - target: {fileID: 1990594193549166204, guid: 9aea4cf6dad33b1419c4597a344a2e92, type: 3}
+      propertyPath: m_fontStyle
+      value: 1
       objectReference: {fileID: 0}
     - target: {fileID: 1990594193549166204, guid: 9aea4cf6dad33b1419c4597a344a2e92, type: 3}
       propertyPath: m_fontSizeMax
@@ -359,12 +367,16 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 1990594193549166204, guid: 9aea4cf6dad33b1419c4597a344a2e92, type: 3}
       propertyPath: m_fontSizeBase
-      value: 42
+      value: 30
       objectReference: {fileID: 0}
     - target: {fileID: 1990594193549166204, guid: 9aea4cf6dad33b1419c4597a344a2e92, type: 3}
       propertyPath: m_sharedMaterial
       value: 
-      objectReference: {fileID: 2100000, guid: a3063f2d22ae4ba44828c3885272eaf2, type: 2}
+      objectReference: {fileID: 2399985188671511309, guid: ef44cbe516f6f9f418375e5b2b73ad8d, type: 2}
+    - target: {fileID: 1990594193549166204, guid: 9aea4cf6dad33b1419c4597a344a2e92, type: 3}
+      propertyPath: m_characterSpacing
+      value: -1
+      objectReference: {fileID: 0}
     - target: {fileID: 1990594193549166204, guid: 9aea4cf6dad33b1419c4597a344a2e92, type: 3}
       propertyPath: m_enableAutoSizing
       value: 0
@@ -596,20 +608,28 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 3420556218193743673, guid: 0ed0a70e5a4682c4c9e105178800133f, type: 3}
       propertyPath: m_fontSize
-      value: 42
+      value: 34
       objectReference: {fileID: 0}
+    - target: {fileID: 3420556218193743673, guid: 0ed0a70e5a4682c4c9e105178800133f, type: 3}
+      propertyPath: m_fontAsset
+      value: 
+      objectReference: {fileID: 11400000, guid: 7e0884bf8d117154792024b547287f9d, type: 2}
     - target: {fileID: 3420556218193743673, guid: 0ed0a70e5a4682c4c9e105178800133f, type: 3}
       propertyPath: m_fontSizeMax
       value: 56
       objectReference: {fileID: 0}
     - target: {fileID: 3420556218193743673, guid: 0ed0a70e5a4682c4c9e105178800133f, type: 3}
       propertyPath: m_fontSizeBase
-      value: 42
+      value: 34
       objectReference: {fileID: 0}
     - target: {fileID: 3420556218193743673, guid: 0ed0a70e5a4682c4c9e105178800133f, type: 3}
       propertyPath: m_sharedMaterial
       value: 
-      objectReference: {fileID: 2100000, guid: a3063f2d22ae4ba44828c3885272eaf2, type: 2}
+      objectReference: {fileID: -8395004629330540845, guid: 7e0884bf8d117154792024b547287f9d, type: 2}
+    - target: {fileID: 3420556218193743673, guid: 0ed0a70e5a4682c4c9e105178800133f, type: 3}
+      propertyPath: m_characterSpacing
+      value: 3
+      objectReference: {fileID: 0}
     - target: {fileID: 3420556218193743673, guid: 0ed0a70e5a4682c4c9e105178800133f, type: 3}
       propertyPath: m_enableAutoSizing
       value: 0