Use localized Google Play release notes instead of always falling back to English

[Copilot]

Google Play release notes were being selected via the English What's New heading, so localized store pages could still surface English content in the upgrade dialog even when Upgrader(languageCode: ...) requested another language.

• Play Store release-notes parsing

  • Prefer the last Play Store [itemprop="description"] block when extracting release notes.
  • This avoids coupling release-note detection to the English-only What's New label and aligns with both classic and redesigned Play Store markup, where the last description block contains the localized release notes when available.

• Regression coverage

  • Add a focused parser test for a classic Play Store page whose release-notes section uses a localized heading (Что нового).
  • Verify release notes come from the localized release-notes block rather than the main app description.

• Docs

  • Clarify that languageCode is used to request localized Google Play listing content, including release notes.

final upgrader = Upgrader(
  languageCode: 'ru',
);

With this change, when the Play Store has localized release notes for the requested language, Upgrader will use that localized content in the dialog.

[larryaasen]

This PR addresses issue #544. @joelrose2 @deandreamatias Would you mind reviewing this PR?

[Copilot]

Pull request overview

This PR updates Google Play release-notes parsing to prefer localized “What’s New” content by extracting release notes from the last [itemprop="description"] element, avoiding reliance on the English-only heading, and adds a regression test + README clarification.

Changes:

• Update Play Store release-notes extraction to use the last [itemprop="description"] block (classic + redesigned parsing paths).
• Add a parser unit test covering a classic Play Store page with a localized “What’s New” heading (Russian).
• Clarify in README that Upgrader(languageCode: ...) requests localized Play Store listing content (including release notes).

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
lib/src/play_store_search_api.dart	Adds shared helper for release-notes extraction from [itemprop="description"] and uses it in classic/redesigned parsing.
test/play_store_test.dart	Adds a focused regression test ensuring localized release notes are selected over the main description.
README.md	Documents languageCode behavior for requesting localized Play Store content.

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[deandreamatias]

This PR addresses issue #544. @joelrose2 @deandreamatias Would you mind reviewing this PR?

I haven't all context of this app, but make sense the Dart syntax of this changes

[codecov]

Codecov Report

❌ Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.92%. Comparing base (c8b8f96) to head (06d1c44).

Files with missing lines	Patch %	Lines
lib/src/play_store_search_api.dart	71.42%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #548      +/-   ##
==========================================
- Coverage   92.73%   91.92%   -0.82%     
==========================================
  Files          12       12              
  Lines        1308     1312       +4     
==========================================
- Hits         1213     1206       -7     
- Misses         95      106      +11     

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