feat: Spanish (es) localization, keyword blacklist, ghost mode privacy, telemetry blocker & HD avatar download

[SkuuIll]

Summary

This pull request brings complete Spanish (es) localization support along with 4 new high-value enhancement features for Toki: Keyword Blacklist filter, Ghost Mode privacy (anonymous stories & invisible DMs), ByteDance Telemetry Blocker, and HD Avatar Download on long-press.

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🌟 Key Features & Changes

1. 🌐 Full Spanish Localization (es)

• Strings & Plurals: Added complete Spanish translation in app/src/main/res/values-es/strings.xml covering 100% of UI strings, plurals, dialogs, warnings, and descriptions.
• Language Picker: Integrated SPANISH("es", "es") in AppLanguage.kt and SettingsScreen.kt.

2. 🚫 Keyword & Hashtag Blacklist Filter

• Functionality: Automatically filters out and hides videos from the feed whose caption (getDesc()) or hashtag tags contain user-defined keywords (case-insensitive).
• UI: Added a dedicated multiline dialog in the Feed settings to configure blocked keywords separated by commas or newlines.
• Hook/Filter Engine: Integrated in FeedFilter.java.

3. 👻 Ghost Mode & Advanced Privacy

• Anonymous Stories: View stories without sending story read receipts to ByteDance servers (ghost_mode_stories).
• Invisible Direct Messages (DMs): Read incoming DMs without dispatching "Seen" / read receipt events (ghost_mode_dm_read).
• Hide Typing Status: Prevent sending the "typing..." indicator while composing direct messages (ghost_mode_typing).
• Implementation: Hook feature in GhostModeHooks.java.

4. 🛡️ ByteDance Analytics & Telemetry Blocker

• Functionality: Intercepts and drops background analytics and tracking calls (AppLog, SensorsData, MobClick, Tracker), saving mobile data and battery life while maximizing user privacy (block_telemetry).
• Implementation: Hook feature in TelemetryHooks.java.

5. 🖼️ HD Avatar Download on Long-Press

• Functionality: Long-pressing a creator's avatar in the feed automatically resolves the maximum resolution image (getAvatarLarger() / getAvatarHd()) and saves it directly to Pictures/TikTok/ via Android DownloadManager (avatar_hd).
• Implementation: Hook feature in AvatarHooks.java.

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🧪 Testing & Verification

• ✅ Unit Tests: All unit tests (FeedFilterTest, AppLanguageTest, SettingsInputTest, RootActionsTest) pass (./gradlew testDebugUnitTest -> 0 failures).
• ✅ Linter: Zero lint errors found (./gradlew lintDebug -> BUILD SUCCESSFUL).
• ✅ Build & Signature: Successfully compiled app-debug.apk and minified app-release-unsigned.apk with R8 (./gradlew assembleDebug assembleRelease).