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/routes/sbc.rs

@@ -0,0 +1,34 @@
+use axum::{extract::State, Json};
+use serde_json::{json, Value};
+
+use crate::{
+    app::AppState,
+    error::AppResult,
+    models::sbc::{SbcResult, SubmitSbcRequest},
+    services::{club as club_svc, profile as profile_svc, sbc as sbc_svc},
+};
+
+pub async fn get_sbcs(State(state): State<AppState>) -> AppResult<Json<Value>> {
+    Ok(Json(json!({ "sbcs": state.sbc_defs })))
+}
+
+pub async fn post_sbc_submit(
+    State(state): State<AppState>,
+    Json(req): Json<SubmitSbcRequest>,
+) -> AppResult<Json<SbcResult>> {
+    let profile = profile_svc::get_active_profile(&state.pool).await?;
+    let club = club_svc::get_club_by_profile(&state.pool, &profile.id).await?;
+
+    let result = sbc_svc::submit_sbc(
+        &state.pool,
+        &state.card_db,
+        &state.sbc_defs,
+        &state.obj_defs,
+        &profile.id,
+        &club.id,
+        &req,
+    )
+    .await?;
+
+    Ok(Json(result))
+}