Rebase into upstream (v16.2)

[PatrykMis]

This update syncs the TalkBack codebase with the latest upstream sources and adds downstream improvements specific to GrapheneOS.

Changes include:

• Rebased to the latest upstream version.

TODO:

• Add Gradle Dependency Verification Metadata
• Update build system for AGP v9.2+
• Various adjustments regarding internal OCR
• Avoid and test communication between mlkit and GMS (possible, partially tested)
• Update liblouis (various memory issues fixed)
• update brltty (hard work; Google maintains their own fork in upstream repo)

[kenblizzardcaron]

+1 on this, I had to install Google's Android Accessibility Suite for work related reasons due to the growing divergence in TalkBack versions. But I understand this isn't trivial work. 60+ merge conflicts on top of the TODOs listed above. Any way to break this down into down into smaller independent PRs?

EDIT: Here's an AI analysis of the conflicts, not sure if this is helpful at all

Root cause: the merge-base is dcddedd ("Push to GitHub 2024-02-26"). main hasn't advanced its upstream baseline since then, so this effectively lands ~2 years of upstream (→16.2) at once, and GrapheneOS's downstream patches collide with the paths upstream reorganized in that window. 64 files conflict; they fall into five groups:

1. Build system & CI (~12 files) — build.gradle, shared.gradle (8 hunks), gradle.properties, gradle-wrapper.properties, proguard/build.gradle, utils/build.gradle, braille/*/build.gradle, .github/workflows/*, dependabot.yml. Both sides overhauled the Gradle/toolchain config independently (main is on Gradle 9.6.1 + dependency verification; this branch brings Kotlin 2 / Compose / AGP 9.2+). Mostly a union of the two toolchain bumps — low semantic risk, but needs a green build to validate.

2. Wear OS + Play/dynamic-feature removals (~23 files, structural) — all the *-watch / values-watch / xml-watch / layout-watch / drawable-watch / *-v31 resources, plus dynamicfeature/FeatureDownloader.java, SettingsMetricStore.java, material/{flags,preference/compose} manifests, TrainingSectionLoggerImpl.java. These are rename/delete + modify/delete conflicts where main deleted the file and 16.2 modified/reorganized it (git even mis-pairs a few deleted watch files as "renames" into unrelated new phone files). Largely mechanical: re-apply the deletions (Wear/Play), take 16.2's new files for the mis-detected renames.

3. Vendored braille — liblouis / brltty / tables (~14 files) — liblouis/{compileTranslationTable.c, config.h, metadata.c}, brltty/{brlapi_server.c, build.gradle}, and the translation tables (da/en-ueb/fi/hu/nl/tr). This is the group that needs a real decision rather than line-by-line merging: main and this branch each bumped liblouis/brltty independently. Probably cleanest to converge on a single newest revision of each and drop the parallel bump, rather than hand-merging generated tables.

4. Preferences / strings / de-Google logic (~13 files) — xml/{preferences, advanced_preferences, focus_indicator_preferences (10 hunks)}, values/{strings, donottranslate}, TalkBackPreference{Filter,Fragment}.java, TutorialAndHelpFragment.java, ImageCaptioner.java, PackageManagerUtils.java, both AndroidManifest.xml. This is where the de-Googling (removed help/feedback, OCR/mlkit, network permission) has to be re-applied on top of 16.2's restructured screens — worth the most care.

5. Polish translations (2 files, 34 hunks) — values-pl/strings.xml (24) and brailleime/.../values-pl/strings.xml (10). Tedious but low-risk; take 16.2's pl set and re-apply any downstream overrides.

[PatrykMis]

It's rebase PR so it needs to be taken as-is from the PR branch to work properly and no merge conflicts.

[thestinger]

@PatrykMis Do you think more should be done before merging it or this is already an improvement?

[RankoR]

Superseded by #121