Add rustfmt configuration and reformat code

- Document new Rust formatting standards in AGENTS, CODE_MAP, and
  PROGRESS.
- Add rustfmt.toml with style 2024, 2‑space indents, 100‑char width, LF
  endings.
- Apply consistent 2‑space indentation and ordering across source files.
- Minor clean‑up of imports and whitespace to match the new style.

src/app/threads/tick.rs

@@ -1,21 +1,21 @@
 use std::{
-    sync::mpsc::Sender,
-    thread,
-    time::{Duration, Instant},
+  sync::mpsc::Sender,
+  thread,
+  time::{Duration, Instant},
 };
 
 pub const TICK_MS: u8 = 33;
 
 pub fn handle_tick_event(tx: Sender<()>) {
-    let interval: Duration = Duration::from_millis(TICK_MS as u64);
-    loop {
-        if tx.send(()).is_err() {
-            break;
-        }
-
-        let elapsed: Duration = Instant::now().elapsed();
-        if interval > elapsed {
-            thread::sleep(interval - elapsed);
-        }
+  let interval: Duration = Duration::from_millis(TICK_MS as u64);
+  loop {
+    if tx.send(()).is_err() {
+      break;
     }
+
+    let elapsed: Duration = Instant::now().elapsed();
+    if interval > elapsed {
+      thread::sleep(interval - elapsed);
+    }
+  }
 }