Showcase addition: Deckmatch Royal (Android app)

[ClaudioBasckeira]

Hi! We'd like to add our app to the showcase. Details per the template:

• Name of app: Deckmatch Royal
• Link to app: https://play.google.com/store/apps/details?id=br.com.overdriveconsultoria.metadecks (Android, live; iOS is in App Store review and we'll add that link once it clears)
• Author(s) of app: Overdrive Softwares e Consultoria (software studio, Araras, Brazil)
• Link(s) to author(s): https://overdrivesoft.com / https://github.com/OverdriveSoftwares
• Discord username(s): omitted
• Description: Deckmatch Royal shows which current meta decks a player can actually build from their own collection. The player pastes their tag once, the app syncs the collection through the official Clash Royale API (via our backend), and after that it works fully offline: every meta deck gets a deterministic buildability score based on real card levels and unlocked evolutions, with user-adjustable weights and a mode that finds meta decks closest to the player's current deck. Free, no account required. Unofficial fan app, compliant with Supercell's Fan Content Policy.

Happy to adjust the entry or provide screenshots if useful. Thanks for maintaining the list!