fix: Resolve cargo fmt formatting errors and rustfmt config deprecations (#203)

- Remove unstable rustfmt options (comment_width, wrap_comments, fn_single_line, space_* settings, struct_* settings)
- Replace deprecated fn_args_layout with fn_params_layout
- Add trailing commas to match arms in mimi-cli/main.rs
- Reorder modules alphabetically in mimi-core/lib.rs
- Verify with 'cargo fmt --check' passes cleanly

Author: LyeZinho

.rustfmt.toml

@@ -14,23 +14,8 @@ tab_spaces = 4
 reorder_imports = true
 reorder_modules = true
 
-# Comments
-comment_width = 80
-wrap_comments = true
-
 # Functions
-fn_args_layout = "Tall"
-fn_single_line = false
-
-# Structures
-struct_literal_style = "Block"
-struct_literal_width = 18
-struct_trailing_comma = "Vertical"
+fn_params_layout = "Tall"
 
 # Match expressions
 match_block_trailing_comma = true
-
-# Spaces
-space_after_colon = true
-space_before_colon = false
-spaces_around_ranges = false

crates/mimi-cli/src/main.rs

@@ -42,14 +42,14 @@ async fn main() -> anyhow::Result<()> {
             if let Some(config_path) = config {
                 info!("Using config: {}", config_path);
             }
-        }
+        },
         Some(Commands::Version) => {
             println!("mimi {}", env!("CARGO_PKG_VERSION"));
-        }
+        },
         None => {
             println!("MiMi v{}", env!("CARGO_PKG_VERSION"));
             println!("Use --help for usage information");
-        }
+        },
     }
 
     Ok(())

crates/mimi-core/src/lib.rs

@@ -3,9 +3,9 @@
 //! This module contains the fundamental components and trait definitions
 //! for the MiMi cognitive operating system.
 
+pub mod config;
 pub mod error;
 pub mod message;
-pub mod config;
 
 pub use error::{Error, Result};