style: cargo fmt --all — make codebase rustfmt-clean

First run of the build-and-test CI gate (cargo fmt --all -- --check) surfaced
pre-existing formatting drift across the agent and server crates. Apply rustfmt
across the workspace so the codebase meets its own CI gate. Pure formatting; no
logic changes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

agent/src/update.rs

@@ -4,9 +4,9 @@
 //! in-place binary replacement with restart.
 
 use anyhow::{anyhow, Result};
-use sha2::{Sha256, Digest};
+use sha2::{Digest, Sha256};
 use std::path::PathBuf;
-use tracing::{info, warn, error};
+use tracing::{error, info, warn};
 
 use crate::build_info;
 
@@ -38,7 +38,7 @@ pub async fn check_for_update(server_base_url: &str) -> Result<Option<VersionInf
     info!("Checking for updates at {}", url);
 
     let client = reqwest::Client::builder()
-        .danger_accept_invalid_certs(true)  // For self-signed certs in dev
+        .danger_accept_invalid_certs(true) // For self-signed certs in dev
         .build()?;
 
     let response = client
@@ -79,11 +79,8 @@ fn is_newer_version(available: &str, current: &str) -> bool {
     let available_clean = available.split('-').next().unwrap_or(available);
     let current_clean = current.split('-').next().unwrap_or(current);
 
-    let parse_version = |s: &str| -> Vec<u32> {
-        s.split('.')
-            .filter_map(|p| p.parse().ok())
-            .collect()
-    };
+    let parse_version =
+        |s: &str| -> Vec<u32> { s.split('.').filter_map(|p| p.parse().ok()).collect() };
 
     let av = parse_version(available_clean);
     let cv = parse_version(current_clean);
@@ -112,7 +109,7 @@ pub async fn download_update(version_info: &VersionInfo) -> Result<PathBuf> {
 
     let response = client
         .get(&version_info.download_url)
-        .timeout(std::time::Duration::from_secs(300))  // 5 minutes for large files
+        .timeout(std::time::Duration::from_secs(300)) // 5 minutes for large files
         .send()
         .await?;
 
@@ -147,7 +144,10 @@ pub fn verify_checksum(file_path: &PathBuf, expected_sha256: &str) -> Result<boo
     if matches {
         info!("Checksum verified: {}", computed);
     } else {
-        error!("Checksum mismatch! Expected: {}, Got: {}", expected_sha256, computed);
+        error!(
+            "Checksum mismatch! Expected: {}, Got: {}",
+            expected_sha256, computed
+        );
     }
 
     Ok(matches)
@@ -160,7 +160,8 @@ pub fn install_update(temp_path: &PathBuf) -> Result<PathBuf> {
 
     // Get current executable path
     let current_exe = std::env::current_exe()?;
-    let exe_dir = current_exe.parent()
+    let exe_dir = current_exe
+        .parent()
         .ok_or_else(|| anyhow!("Cannot get executable directory"))?;
 
     // Create paths for backup and new executable
@@ -257,10 +258,11 @@ pub fn cleanup_post_update() {
 #[cfg(windows)]
 fn schedule_delete_on_reboot(path: &PathBuf) {
     use std::os::windows::ffi::OsStrExt;
-    use windows::Win32::Storage::FileSystem::{MoveFileExW, MOVEFILE_DELAY_UNTIL_REBOOT};
     use windows::core::PCWSTR;
+    use windows::Win32::Storage::FileSystem::{MoveFileExW, MOVEFILE_DELAY_UNTIL_REBOOT};
 
-    let path_wide: Vec<u16> = path.as_os_str()
+    let path_wide: Vec<u16> = path
+        .as_os_str()
         .encode_wide()
         .chain(std::iter::once(0))
         .collect();