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/mod.rs

@@ -5,8 +5,8 @@ pub mod club;
 pub mod division;
 pub mod draft;
 pub mod economy;
-pub mod fut_champs;
 pub mod events;
+pub mod fut_champs;
 pub mod health;
 pub mod market;
 pub mod matches;