Fix repeated DFE paging keys

[anod]

Summary

• Stop DFE endpoint paging when Play Store returns a blank, missing, or repeated continuation URL, preventing AndroidX Paging from receiving the same nextKey twice.
• Update the open-source licenses flow from the legacy Google OSS licenses activity to play-services-oss-licenses:17.5.1 and the v2 OssLicensesMenuActivity.
• Add a targeted app log before launching open-source licenses so future Crashlytics logs can confirm that settings flow directly.
• Document a public-safe workflow for checking Firebase Crashlytics issue/event details from console URLs in .github/copilot-instructions.md.

Crashlytics fixes checked

• Paging crash: fatal IllegalStateException from AndroidX Paging because the Play Store endpoint returned the same continuation URL; fixed by treating repeated continuations as end-of-pagination.
• OSS licenses crash: fatal Resources$NotFoundException: Resource ID #0x0 inside Google OSS licenses legacy fragment; logs did not contain an explicit settings click, so the fix updates to the current v2 licenses activity and adds an app-owned log at launch.

How to check Crashlytics crashes

• Extract the issue id and event id from the Firebase Console URL for local investigation.
• Use Firebase Console or authenticated local tooling to inspect issue and event details.
• Do not publish Firebase project ids, app ids, OAuth tokens, raw logs, or private Crashlytics URLs in commits, PR descriptions, or public docs.

Validation

• .\gradlew.bat :app:testDebugUnitTest --tests "com.anod.appwatcher.search.ListEndpointPagingSourceTest"
• .\gradlew.bat :app:testDebugUnitTest
• .\gradlew.bat ktlintCheck
• .\gradlew.bat :app:assembleDebug :app:testDebugUnitTest ktlintCheck --no-daemon
• .\gradlew.bat --quiet :app:dependencyInsight --dependency play-services-oss-licenses --configuration releaseRuntimeClasspath resolves com.google.android.gms:play-services-oss-licenses:17.5.1

[Copilot]

Pull request overview

This PR hardens DFE-based pagination in ListEndpointPagingSource by preventing Paging from receiving a repeated continuation URL as nextKey, treating that condition (and missing/blank continuations) as end-of-pagination.

Changes:

• Added a small helper (resolveNextPageUrl) to normalize/validate the next-page continuation URL (null/blank/repeated → null).
• Updated ListEndpointPagingSource.load() to use the resolved nextKey and improved debug logging to show requested → resolved continuation.
• Added unit coverage for new/repeated/missing/blank continuation URL behavior.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
app/src/main/java/com/anod/appwatcher/search/ListEndpointPagingSource.kt	Ensures pagination stops when the server repeats or omits the continuation URL, avoiding duplicate nextKey emissions.
app/src/test/java/com/anod/appwatcher/search/ListEndpointPagingSourceTest.kt	Adds regression tests covering repeated, missing, and blank continuation URLs.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.