Linthra 0.1.0-alpha.36 — build & packaging maintenance.

Changed:
- The Android build no longer runs Jetifier. Every dependency is already
  AndroidX, so the rewrite step was redundant overhead. No app features,
  permissions, or behavior change.

Note:
- v0.1.0-alpha.35 was skipped: that tag was pushed while pubspec.yaml still
  read 0.1.0-alpha.34+100034, so its build failed the tag/pubspec
  version-match check. The existing v0.1.0-alpha.35 tag is left untouched;
  this is a clean v0.1.0-alpha.36 instead.

Still an alpha — expect rough edges. Not on F-Droid yet.
