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/market.rs

@@ -0,0 +1,47 @@
+use axum::{extract::State, Json};
+use serde_json::{json, Value};
+
+use crate::{
+    app::AppState,
+    error::AppResult,
+    models::market::{BuyListingRequest, SellCardRequest},
+    services::{club as club_svc, market as market_svc, profile as profile_svc},
+};
+
+pub async fn get_market(State(state): State<AppState>) -> AppResult<Json<Value>> {
+    let listings = market_svc::get_active_listings(&state.pool, &state.card_db).await?;
+    Ok(Json(
+        json!({ "listings": listings, "total": listings.len() }),
+    ))
+}
+
+pub async fn post_market_buy(
+    State(state): State<AppState>,
+    Json(req): Json<BuyListingRequest>,
+) -> AppResult<Json<Value>> {
+    let profile = profile_svc::get_active_profile(&state.pool).await?;
+    let club = club_svc::get_club_by_profile(&state.pool, &profile.id).await?;
+
+    let card = market_svc::buy_listing(&state.pool, &state.card_db, &club.id, &req).await?;
+    Ok(Json(
+        json!({ "purchased_card": card, "message": "Card purchased successfully" }),
+    ))
+}
+
+pub async fn post_market_sell(
+    State(state): State<AppState>,
+    Json(req): Json<SellCardRequest>,
+) -> AppResult<Json<Value>> {
+    let profile = profile_svc::get_active_profile(&state.pool).await?;
+    let club = club_svc::get_club_by_profile(&state.pool, &profile.id).await?;
+
+    let new_balance = market_svc::sell_card(&state.pool, &club.id, &req).await?;
+    Ok(Json(
+        json!({ "new_coin_balance": new_balance, "message": "Card sold to NPC market" }),
+    ))
+}
+
+pub async fn post_market_refresh(State(state): State<AppState>) -> AppResult<Json<Value>> {
+    let count = market_svc::refresh_npc_listings(&state.pool, &state.card_db).await?;
+    Ok(Json(json!({ "listings_generated": count })))
+}