[NONPLAYT]

Quark 2.0: the single core is split into optional modules that are shaded and relocated into each plugin. Libraries no longer depend on a server platform; thin adapters connect them to Paper, Folia, Bukkit, Velocity and BungeeCord.

New

• Modules: quark-common, quark-platform-api, quark-dependency, quark-logger, quark-update, quark-config (+ -yaml, -validator, -serdes-bukkit), quark-bom.
• Adapters: platform/{paper,bukkit,velocity,bungee} with a scheduler (Helix features, Folia regions), ClassLoaderAppender and update notifiers on join.
• Configs: annotation-driven, migrations, validation (@NotNull, @Min, @Max, @Pattern, @Check), Bukkit types. snakeyaml-engine is loaded at runtime, not shipped.
• Update checker: Modrinth, Hangar, GitHub, Spigot, Reposilite, JSON URL.
• Gradle plugin org.bxteam.quark: quark { platform; modules(...) }, runtime manifest, relocation to <group>.libs.quark, quark(...) { relocate = true } per dependency, devServer { } → runServer. run-server-plugin is merged in; org.bxteam.runserver remains as a deprecated shim.
• Our own ASM relocator replaces me.lucko:jar-relocator (no second ASM).
• Warning when the server already ships a library that Quark loaded.

Fixed

• Resolver: POM dependencies are resolved against the parent hierarchy; dependencyManagement no longer leaks.
• One version per library: a root's version wins, otherwise the newest (MavenVersions). The Gradle manifest is loaded non-transitively.

Breaking

• 1.x manifest files (quark/dependencies.txt etc.) are no longer read; plugins built with the 1.x Gradle plugin must be rebuilt.
• Scheduler.sync() on Folia goes to the global region scheduler; use sync(entity/location, ...) for context-bound work.
• Lombok and examples removed. Sponge support dropped.
• License changed to MIT.

Build

• buildSrc → build-logic convention plugins, Gradle 9.8.0 (the plugin is tested on 8.14.3).
• CI runs build and checkArtifactSize (common + platform-api + dependency + paper < 200 KB) with the configuration cache.
• Repository conventions, new README and logo, Renovate on the BX Team preset; Qodana removed.

Things done

• Tested, as applicable:
  • Covered by a new or updated test.
  • Ran a plugin built against this change on a real server — Paper 1.20.1.
• lib/* and common/ stay platform-free, and quark-common gained no runtime dependency.
• API compatibility, where this touches a published module:
  • Source- and binary-compatible with the last release, or
  • Breaking, with the old API kept as @Deprecated(forRemoval = true).
• Platform reach, where this touches an adapter or the scheduler:
  • Paper
  • Folia
  • Spigot / Bukkit
  • Velocity
  • BungeeCord
• Gradle plugin changes do no resolution or network access during configuration, and new modules are added to bom/ and to the plugin's functional-test publish list.
• Documentation updated — <link to the BX-Team/code PR>
• This pull request has one subject.
• Fits CONTRIBUTING.md.