style: apply cargo fmt to entire codebase

Standardize code formatting across all 173 Rust source files
using rustfmt. No functional changes - purely cosmetic.

This establishes a consistent code style baseline for the
project going forward.

src/interfaces/middleware/mod.rs

@@ -1,3 +1,3 @@
-pub mod cache;
 pub mod auth;
-pub mod redirect; // Add redirect middleware for API to Axum transition
+pub mod cache;
+pub mod redirect; // Add redirect middleware for API to Axum transition