Prepare a Store Submission

Background: Native [iOS / Android / both] app approaching first release
(or a major update). What it does: [brief]. Sensitive areas: [accounts,
payments, data collection, UGC, etc.].

Use case: Prepare a complete, review-ready store submission and avoid the
common rejection traps.

Implementation details:
- The metadata checklist: name, subtitle/short description, description,
  keywords, category, support/privacy URLs
- Screenshots and previews per required device size, plus an app icon
  meeting spec
- Review-compliance landmines: account deletion (required), privacy
  declarations (Section 10.5), sign-in options, working demo account for
  reviewers, permission usage strings, and anything involving payments or
  UGC moderation
- Age rating and export-compliance questions
- A pre-submission QA pass on a release build (not debug)

Deliverable: A submission checklist per store, the metadata I need to
write, the screenshot/asset spec, the likely rejection risks for my app
and how to preempt them, and the reviewer-notes/demo-account to include.