Revert "ci(release): revert to F-Droid-signed recipe; drop pre-merge reference build"

This reverts commit 4d99e1a840.

docs/fdroid/org.comunes.tane.yml

@@ -15,12 +15,19 @@ AutoName: Tane
 RepoType: git
 Repo: https://git.comunes.org/comunes/tane.git
 
+# Reproducible, developer-signed: F-Droid rebuilds each split and, if it matches
+# our own signed APK on the git.comunes.org release byte-for-byte, publishes OUR
+# APK (same signature as the Play build). Value is the SHA-256 of the tane-upload
+# signing certificate (public).
+AllowedAPKSigningKeys: ddfae432091b8248a8a4a1b353487fa626301f4357ef835e94ec312f69418e38
+
 Builds:
   - versionName: 0.1.8
     versionCode: 101
     commit: v0.1.8
     subdir: apps/app_seeds
     output: build/app/outputs/flutter-apk/app-armeabi-v7a-release.apk
+    binary: https://git.comunes.org/comunes/tane/releases/download/v%v/app-armeabi-v7a-release.apk
     srclibs:
       - flutter@stable
       - tesseract4android@4.9.0
@@ -53,6 +60,7 @@ Builds:
     commit: v0.1.8
     subdir: apps/app_seeds
     output: build/app/outputs/flutter-apk/app-arm64-v8a-release.apk
+    binary: https://git.comunes.org/comunes/tane/releases/download/v%v/app-arm64-v8a-release.apk
     srclibs:
       - flutter@stable
       - tesseract4android@4.9.0
@@ -85,6 +93,7 @@ Builds:
     commit: v0.1.8
     subdir: apps/app_seeds
     output: build/app/outputs/flutter-apk/app-x86_64-release.apk
+    binary: https://git.comunes.org/comunes/tane/releases/download/v%v/app-x86_64-release.apk
     srclibs:
       - flutter@stable
       - tesseract4android@4.9.0