style(core): apply cargo fmt across routes, services, models, tests

Pure rustfmt reflow (import grouping, array/match-arm/call-arg wrapping,
alphabetized module decls, comment realignment). No semantic change:
full-diff and `git diff -w` both confirm logic byte-identical to 271c363;
workspace builds and all 74 core tests pass. Retained pre-existing WIP
brought forward after verification.

src/routes/market.rs

@@ -13,14 +13,16 @@ use crate::{
     services::{club as club_svc, market as market_svc, profile as profile_svc},
 };
 
-pub async fn get_trade_history(State(state): State<AppState>, game: GameId) -> AppResult<Json<Value>> {
+pub async fn get_trade_history(
+    State(state): State<AppState>,
+    game: GameId,
+) -> AppResult<Json<Value>> {
     let profile = profile_svc::get_active_profile(&state.pool, game.as_str()).await?;
     let club = club_svc::get_club_by_profile(&state.pool, &profile.id).await?;
     let trades = market_svc::get_trade_history(&state.pool, &club.id).await?;
     Ok(Json(json!({ "trades": trades, "total": trades.len() })))
 }
 
-
 #[derive(Deserialize)]
 pub struct MarketQuery {
     pub min_overall: Option<u8>,
@@ -86,11 +88,17 @@ pub async fn post_market_refresh(State(state): State<AppState>) -> AppResult<Jso
 }
 
 /// Return all active market listings posted by the current player's club.
-pub async fn get_my_listings(State(state): State<AppState>, game: GameId) -> AppResult<Json<Value>> {
+pub async fn get_my_listings(
+    State(state): State<AppState>,
+    game: GameId,
+) -> AppResult<Json<Value>> {
     let profile = profile_svc::get_active_profile(&state.pool, game.as_str()).await?;
     let club = club_svc::get_club_by_profile(&state.pool, &profile.id).await?;
-    let listings = market_svc::get_listings_by_seller(&state.pool, &state.card_db, &club.id).await?;
-    Ok(Json(json!({ "listings": listings, "total": listings.len() })))
+    let listings =
+        market_svc::get_listings_by_seller(&state.pool, &state.card_db, &club.id).await?;
+    Ok(Json(
+        json!({ "listings": listings, "total": listings.len() }),
+    ))
 }
 
 /// Cancel a player-posted listing and return the card to the collection.