feat: BLE stability fixes, NIRS streaming improvements, catheter count feature

- Fix BLE API deprecation warnings with API 33+ version checks
- Move isServiceReady to onDescriptorWrite for reliable CCCD setup
- Fix battery polling: immediate query on connect, pause during NIRS streaming
- Add mcj retry mechanism for NIRS streaming reliability
- Add debug logging to BLE, NIRS parsing, and processing pipeline
- Add catheter count feature to Piezo monitoring (persistent count, add dialog, auto-decrement on catheterize)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/src/main/java/com/example/medilightv2android/services/UserStorage.kt

@@ -73,6 +73,10 @@ class UserStorage private constructor(context: Context) {
         get() = prefs.getInt("bladder_level", 0)
         set(value) { prefs.edit().putInt("bladder_level", value).apply() }
 
+    var catheterCount: Int
+        get() = prefs.getInt("catheter_count", 0)
+        set(value) { prefs.edit().putInt("catheter_count", value).apply() }
+
     var hasCompletedOnboarding: Boolean
         get() = prefs.getBoolean("has_completed_onboarding", false)
         set(value) { prefs.edit().putBoolean("has_completed_onboarding", value).apply() }