Initial commit: OpenFUT Core

Offline Ultimate Team backend — game-independent REST API.

- 19 API endpoints: auth, profiles, clubs, cards, packs, squads,
  objectives, SBCs, match rewards, NPC market, statistics
- Axum + SQLite + SQLx with full migrations
- Weighted pack generator, SBC validation engine
- JSON-driven mod data (cards, packs, objectives, SBCs)
- 5 integration tests passing

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/lib.rs

@@ -0,0 +1,24 @@
+pub mod app;
+pub mod config;
+pub mod db;
+pub mod error;
+pub mod modding;
+pub mod models;
+pub mod routes;
+pub mod seed;
+pub mod services;
+
+use anyhow::Result;
+use axum::Router;
+
+/// Build the full Axum application with a provided pool and data directory.
+/// Used by tests to create in-process app instances.
+pub async fn build_app(pool: db::Pool, data_dir: &str) -> Result<Router> {
+    let cfg = config::Config {
+        listen_addr: "127.0.0.1:0".into(),
+        database_url: "sqlite::memory:".into(),
+        data_dir: data_dir.to_string(),
+        max_connections: 1,
+    };
+    app::build(pool, cfg).await
+}