fix(copymangas): restore Animetail update compatibility

[ahe-meow]

Summary

• Restore the interceptor ordering required by Animetail so the uncaught-exception handler runs first and response validation follows it.
• Add the legacy SManga suspend adapters used by Animetail and preserve them through shrinking.
• Make manga update handling respect the requested detail/chapter flags and tolerate nullable API fields.

Changes

File	Change
src/zh/copymangas/src/eu/kanade/tachiyomi/extension/zh/copymangas/CopyMangas.kt	Fix interceptor ordering and Animetail update adapters/flag handling.
src/zh/copymangas/src/eu/kanade/tachiyomi/extension/zh/copymangas/CopyMangasDto.kt	Handle nullable manga metadata and chapter groups safely.
src/zh/copymangas/proguard-rules.pro	Keep the public legacy suspend adapters from being removed or renamed.
src/zh/copymangas/build.gradle.kts	Increment versionCode from 57 to 58.

Validation

• git diff --check
• Branch is based directly on upstream main.
• Manually installed the generated APK and verified the affected Animetail library update flow.
• ./gradlew :src:zh:copymangas:lintRelease — attempted locally but blocked during Gradle configuration because the available Java 25 installation does not provide JAVA_COMPILER; no source compilation was reached.

Checklist

• Source name and language are unchanged.
• versionCode was updated.
• The changes were manually reviewed after AI assistance.
• No generated or session files are included.
• This PR contains one focused work unit.

The upstream repository has Issues disabled, so there is no issue number available to reference.

[Copilot]

🟢 Approval recommended

The focused compatibility changes are internally consistent and no blocking issues were identified.

Pull request overview

Restores CopyMangas compatibility with Animetail’s legacy update flow while preserving current KeiSource behavior.

Changes:

• Reorders interceptors for compatible exception handling and response validation.
• Adds preserved legacy manga/chapter adapters with flag-aware updates.
• Safely handles nullable metadata and chapter groups.

File summaries

File	Description
CopyMangas.kt	Adds adapters and corrects update/interceptor behavior.
CopyMangasDto.kt	Handles nullable API metadata safely.
proguard-rules.pro	Preserves legacy adapter methods during shrinking.
build.gradle.kts	Bumps the extension version code.

Review details

• Files reviewed: 4/4 changed files
• Comments generated: 0
• Review effort level: Balanced

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