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>

server/src/db/machines.rs

@@ -80,7 +80,7 @@ pub async fn update_machine_status(
 /// Get all persistent machines (for restore on startup)
 pub async fn get_all_machines(pool: &PgPool) -> Result<Vec<Machine>, sqlx::Error> {
     sqlx::query_as::<_, Machine>(
-        "SELECT * FROM connect_machines WHERE is_persistent = true ORDER BY hostname"
+        "SELECT * FROM connect_machines WHERE is_persistent = true ORDER BY hostname",
     )
     .fetch_all(pool)
     .await
@@ -91,20 +91,20 @@ pub async fn get_machine_by_agent_id(
     pool: &PgPool,
     agent_id: &str,
 ) -> Result<Option<Machine>, sqlx::Error> {
-    sqlx::query_as::<_, Machine>(
-        "SELECT * FROM connect_machines WHERE agent_id = $1"
-    )
-    .bind(agent_id)
-    .fetch_optional(pool)
-    .await
+    sqlx::query_as::<_, Machine>("SELECT * FROM connect_machines WHERE agent_id = $1")
+        .bind(agent_id)
+        .fetch_optional(pool)
+        .await
 }
 
 /// Mark machine as offline
 pub async fn mark_machine_offline(pool: &PgPool, agent_id: &str) -> Result<(), sqlx::Error> {
-    sqlx::query("UPDATE connect_machines SET status = 'offline', last_seen = NOW() WHERE agent_id = $1")
-        .bind(agent_id)
-        .execute(pool)
-        .await?;
+    sqlx::query(
+        "UPDATE connect_machines SET status = 'offline', last_seen = NOW() WHERE agent_id = $1",
+    )
+    .bind(agent_id)
+    .execute(pool)
+    .await?;
     Ok(())
 }