build(release): Android signing, iOS privacy manifest, store assets (Phase 7)
- Android: release keystore signing wired via gitignored key.properties (falls
back to debug when absent). Verified: signed AAB built (signer CN=Block Seasons).
- iOS: app PrivacyInfo.xcprivacy (ATT tracking flag, device-id/usage data types,
UserDefaults+FileTimestamp required-reason APIs) registered in the Runner target.
- Store: app-ads.txt (pub-5605900229781491), EN/KO listing copy, owner submission
guide (privacy labels, app-ads hosting, upload/submit steps).
Secrets (keystore, key.properties) are gitignored — owner backs them up.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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