feat: UI 일괄 수정 (9개 항목 중 1,2,3,4,9번)

1+2. Placement peak 감도: urineLen >= 10 필터 (짧은 false positive 방지)
3. Placement 센서 그림(SensorLayoutCanvas) 제거
4. 앱 이름: MediLight → VesiScan-Basic (홈화면 + strings.xml)
9. BLE 신호: Good+Excellent 통합 (rssi >= -65 → Green 4칸)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/src/main/res/values-ko/strings.xml

@@ -1,5 +1,5 @@
 <resources>
-    <string name="app_name">MedilightV2</string>
+    <string name="app_name">VesiScan-Basic</string>
 
     <!-- Common -->
     <string name="confirm">확인</string>

app/src/main/res/values/strings.xml

@@ -1,5 +1,5 @@
 <resources>
-    <string name="app_name">MedilightV2</string>
+    <string name="app_name">VesiScan-Basic</string>
 
     <!-- Common -->
     <string name="confirm">OK</string>