Theseus skin selector backend

[AlexTMjugador]

Overview

This pull request introduces the required backend logic for a skin selector feature, building upon the profile fetching groundwork proposed in #3491. Some highlights include:

• Added new Tauri commands to the new minecraft-skins plugin for the frontend to use (see apps/app/src/api/minecraft_skins.rs):
  • get_available_capes: fetches the list of available capes for the current player.
  • get_available_skins: fetches the list of available skins for the current player.
  • add_and_equip_custom_skin: adds a custom skin to the locally stored list of available skins for the current player, and equips it in their Mojang player profile.
  • set_default_cape: sets the default cape for the current player.
  • equip_skin: equips a skin in the Mojang player profile of the current player.
  • remove_custom_skin: removes a custom skin from the locally stored list of available skins for the current player.
  • unequip_skin: unequips any skin in the Mojang player profile of the current player, resetting them to their default skin.
• The commands above interact with the profile cache and fetching put in place by Extend Theseus auth subsystem to fetch complete user profiles #3491 to ensure that skin and cape selections are done efficiently and correctly, even if players change their skins through external means (e.g., the Minecraft website, other launchers).
• Similarly to the vanilla launcher, a total of 18 default Minecraft skins are also hardcoded in the application as available. This number comes from the 9 default skins (Alex, Ari, Efe, Kai, Makena, Noor, Steve, Sunny, and Zuri), where each skin has two variations (slim and wide arms).
• Data storage of custom capes is done with new SQLite state DB tables, whose definitions can be read in the new 20250413162050_skin-selector.sql sqlx migration.

Testing

I've successfully conducted a basic verification of most of the new minecraft-skins commands through manual invoke calls in the app web development console, and did manual unit tests for the underlying data access and store mechanisms. It's still possible that actual use by frontend code will reveal further areas of improvement, however.

[Copilot]

Copilot reviewed 23 out of 34 changed files in this pull request and generated 1 comment.

Files not reviewed (11)

• apps/app/capabilities/plugins.json: Language not supported
• apps/app/tauri.conf.json: Language not supported
• packages/app-lib/.sqlx/query-1937e191a7815a55274bb39a035e02a39bb04b45dbd727e5db5b5308deda4e04.json: Language not supported
• packages/app-lib/.sqlx/query-27a4ca00ab9d1647bf63287169f6dd3eed86ba421c83e74fe284609a8020bd22.json: Language not supported
• packages/app-lib/.sqlx/query-3d15e7eb66971e70500e8718236fbdbd066d51f88cd2bcfed613f756edbd2944.json: Language not supported
• packages/app-lib/.sqlx/query-3f3d3c2d77c1bcaf4044b612c3822546583aa19ea7088682d718c64ed5d5f1c5.json: Language not supported
• packages/app-lib/.sqlx/query-545b01d8cc1e79ff5d4136887fbb712aba58908a66dd7bbd64c293b9ee7a1523.json: Language not supported
• packages/app-lib/.sqlx/query-957f184e28e4921ff3922f3e74aae58e2d7a414e76906700518806e494cd0246.json: Language not supported
• packages/app-lib/.sqlx/query-9c2522e4518067192539ad270253ae1b3d75e80e52529e491e86ff370d6424b3.json: Language not supported
• packages/app-lib/.sqlx/query-aae88809ada53e13441352e315f68169cfd8226b57bacd8c270d7777fc6883ac.json: Language not supported
• packages/app-lib/migrations/20250413162050_skin-selector.sql: Language not supported