refactor: extract widget storage behind WidgetRepository interface.

[Giyutomioka-SS]

Note

Assisted-by Claude Opus 4.7
Research & architecture analysis

Decouples WidgetStatus from MetaDB by introducing a WidgetRepository interface.
MetaDbWidgetRepository delegates to the existing MetaDB methods, so there’s no behavior change.

Fixes

• Fixes part of Architecture Discussion: Module Extraction #20737

Approach

• Added a WidgetRepository interface for the 3 widget-related MetaDB methods
• Added MetaDbWidgetRepository as a delegating implementation with constructor-injected context.
• Initialized it in AnkiDroidApp.onCreate() before ChangeManager.subscribe()
• Replaced direct MetaDB usage in WidgetStatus.kt with the interface and removed context from fetchSmall() / fetchDue()

How Has This Been Tested?

Local build, test compilation passes.

Checklist

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• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[david-allison]

Cheers

[david-allison]

One nitpick, rest looks good

[DoomsCoder]

LGTM 🚀