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/upgrades.rs

@@ -72,13 +72,8 @@ pub async fn post_change_position(
     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 updated = upgrade_svc::change_position(
-        &state.pool,
-        &club.id,
-        &owned_card_id,
-        &req.position,
-    )
-    .await?;
+    let updated =
+        upgrade_svc::change_position(&state.pool, &club.id, &owned_card_id, &req.position).await?;
 
     let card_def = state.card_db.get(&updated.card_id);