fdroid related changes

[ndrkltsk]

added script for building bare from sources, required by fdroid.
added new metadata for fdroid.

[ndrkltsk]

@nickgr2 please review this pr

[nickgr2]

A few non-blocking observations on the build script and metadata changes.

Wiring — confirm intent

scripts/fdroid/build-bare-from-source.sh isn't invoked by scripts/fdroid-build.sh or any npm run script in the repo. Presumably the F-Droid recipe in fdroiddata calls it directly between npm ci and gradle's preBuild (the script reads from node_modules/bare-link and writes prebuilds back into node_modules/<addon>/prebuilds/ for link.mjs to pick up). Confirming this is intentional and won't get orphaned.

minor: prereq check is incomplete

discover_addons reads node_modules/bare-link/lib/dependencies (script line 379), but check_prereqs only validates react-native-bare-kit. bare-link is currently hoisted as a transitive of react-native-bare-kit@0.13.0 — if a future kit upgrade changes its dep tree, the script would fail with MODULE_NOT_FOUND from Node rather than the cleaner fatal message. A one-liner near the other directory checks — [ -d "$PROJECT_DIR/node_modules/bare-link" ] || fatal "bare-link missing; run 'npm ci' first" — would keep diagnostics consistent.

minor: changelog covers only two ABIs

metadata/en-US/changelogs/16101.txt and 16102.txt match the per-ABI versionCode scheme from scripts/fdroid-build.sh (versionCode * 10 + abiOffset, armeabi-v7a=1, arm64-v8a=2). x86 and x86_64 (offsets 3, 4) get no changelog. If the F-Droid recipe ships only the two arm ABIs that's fine; otherwise emulator users would see an empty release-notes panel.

minor: dropped F-Droid build notes from full description

The previous full_description.txt ended with a paragraph noting that the Android "fdroid" channel removes Play Services–specific auth dependencies and disables in-app version checking / Play Store redirects. That's useful context for users comparing this build to the Play Store version (different feature set on the same app page). Worth keeping it (or compressing to a "What's different on F-Droid" line) rather than removing outright.

[ndrkltsk]

@nickgr2

Wiring

confirmed intentional.
The fdroid recipe in fdroiddata/metadata/com.pears.pass.yml calls the script directly from the build phase:

  build:                                                                                                                                                                                     
    - bash scripts/fdroid/build-bare-from-source.sh arm64-v8a                                                                                                                                
    - cd android
    - gradlew-fdroid assembleFdroidRelease --no-daemon --parallel

prereq check

Good catch, fixed

covers only two ABIs

Intentional.
The fdroid recipe ships only armeabi-v7a (16101) and arm64-v8a (16102). x86/x86_64 (offsets 3, 4) aren't in the recipe, so no changelogs needed for them. If we add emulator support later we'll add then.

dropped F-Droid build notes from full description

Acknowledged, but keeping the description as-is for now.
The differences are real, but we're treating them as the fdroid baseline rather than diffs the user needs to reason about. Open to revisiting if other reviewers feel strongly.