CRITICAL BUGFIX:
- Fixed incorrect ProGuard class path for Note\$Companion\$NoteRaw
- Original v1.8.0 had specific -keep rules that didn't match actual JVM class name
- R8 obfuscated all NoteRaw fields (id→a, title→b, ...) → Gson parse failure
- ALL notes appeared lost after update (but were safe on disk/server)
- Reverted to safe broad rule: -keep class dev.dettmer.simplenotes.** { *; }
Added safety-guards in detectServerDeletions():
- Abort if serverNoteIds is empty (network error, not mass deletion)
- Abort if ALL local notes would be marked deleted (almost certainly a bug)
- Tested: Update from v1.7.2 restores all notes successfully
849e4080d6