[BEEEP] Add println clippy lints for desktop_native. (#16761)

* [BEEEP] Add println clippy lints for `desktop_native`.

* remaining stray printlns

apps/desktop/desktop_native/Cargo.lock

@@ -2586,6 +2586,7 @@ dependencies = [
  "ctor 0.5.0",
  "desktop_core",
  "libc",
+ "tracing",
 ]
 
 [[package]]

apps/desktop/desktop_native/Cargo.toml

@@ -79,6 +79,10 @@ zbus_polkit = "=5.0.0"
 zeroizing-alloc = "=0.1.0"
 
 [workspace.lints.clippy]
+# Dis-allow println and eprintln, which are typically used in debugging.
+# Use `tracing` and `tracing-subscriber` crates for observability needs.
+print_stderr = "deny"
+print_stdout = "deny"
+string_slice = "warn"
 unused_async = "deny"
 unwrap_used = "deny"
-string_slice = "warn"

apps/desktop/desktop_native/autotype/src/windows.rs

@@ -331,7 +331,6 @@ mod tests {
     fn get_alphabetic_hot_key_happy() {
         for c in ('a'..='z').chain('A'..='Z') {
             let letter = c.to_string();
-            println!("{}", letter);
             let converted = get_alphabetic_hotkey(letter).unwrap();
             assert_eq!(converted, c as u16);
         }

apps/desktop/desktop_native/process_isolation/Cargo.toml

@@ -12,3 +12,4 @@ crate-type = ["cdylib"]
 ctor = { workspace = true }
 desktop_core = { path = "../core" }
 libc = { workspace = true }
+tracing = { workspace = true }

apps/desktop/desktop_native/process_isolation/src/lib.rs

@@ -7,6 +7,7 @@
 
 use desktop_core::process_isolation;
 use std::{ffi::c_char, sync::LazyLock};
+use tracing::info;
 
 static ORIGINAL_UNSETENV: LazyLock<unsafe extern "C" fn(*const c_char) -> i32> =
     LazyLock::new(|| unsafe {
@@ -38,8 +39,8 @@ unsafe extern "C" fn unsetenv(name: *const c_char) -> i32 {
 #[ctor::ctor]
 fn preload_init() {
     let pid = unsafe { libc::getpid() };
+    info!(pid, "Enabling memory security for process.");
     unsafe {
-        println!("[Process Isolation] Enabling memory security for process {pid}");
         process_isolation::isolate_process();
         process_isolation::disable_coredumps();
     }