Remove sponsorship link from About screen

[pocketpal-dev-team]

Summary

Removes the "Become a Sponsor" button (an external Buy Me a Coffee donation link) from the About screen on every platform.

Why: Google Play's Payments policy does not allow an in-app link to an external donation page. The button was already hidden on iOS behind a Platform.OS !== 'ios' gate; this removes it everywhere and drops the gate.

Changes

• src/screens/AboutScreen/AboutScreen.tsx: remove the sponsor button, the "or" separator before it, and the Platform.OS gate. Drop the now-unused Platform and HeartIcon imports.
• src/screens/AboutScreen/styles.ts: remove the unused supportButton / supportButtonText styles. orText stays because the "or by" line still uses it.
• src/locales/en.json: remove the now-unused about.sponsorButton and about.orText keys.
• src/screens/AboutScreen/__tests__/AboutScreen.test.tsx: replace the sponsor-URL test and the iOS-hidden test with a check, run on both Android and iOS, that no sponsor button or stray "or" separator renders, while "Star on GitHub", "or by", and the share-thoughts button are still there.

The support section now reads: "…please consider supporting the project by:" → Star on GitHub → "or by" → Sharing your thoughts. No copy was added.

Only en.json is edited (per CONTRIBUTING.md, the other locales are managed on Weblate); Weblate's cleanup add-on drops the stale keys from them after merge.

Out of scope: the README's GitHub Sponsors badge and link are not in the app, so they are untouched. The HeartIcon export stays in the shared icon barrel.

Verification

• yarn lint: 0 errors (the 49 existing warnings are all outside the files changed here)
• yarn typecheck: pass
• yarn l10n:validate: pass
• yarn test --coverage: 4379 passed, 2 skipped, 0 failed. Global line coverage 76.9%; AboutScreen.tsx 89.6%.
• Checked that the new test is not vacuous: run against the previous AboutScreen.tsx, styles.ts, and en.json, the Android case fails and the iOS case passes (iOS was already gated).
• No native or package.json changes.

Before/after Android screenshots of the About screen are in the comments below.

Generated by PocketPal Dev Team · Claude Code

[pocketpal-dev-team]

Visual evidence — About screen, Android

The "Support the Project" section loses the sponsor button and the "or" separator above it. The GitHub and feedback options are unchanged.

Before (main)	After (this PR)

OnePlus 6, Android 11. iOS is not shown, because the button was already hidden there and the iOS screen does not change.

How these builds were made

• Both screenshots come from the same CI e2e APK. It was built from a commit with no native or package.json differences from this PR's base.
• A JS bundle compiled locally was put into that APK: before from ced4fadf (base), after from 0f16642e (head). Both APKs were then re-signed with a throwaway key.
• The bundle inside the installed after APK matches the bundle built from head, byte for byte.
• In that bundle, "Become a Sponsor" and "buymeacoffee" appear 0 times, while the control strings (e.g. "Support the Project") are present.

Generated by PocketPal Dev Team · Claude Code

[a-ghorbani]

lgtm