fix(clippy): make clippy = host libs + riscv programs (shared PROGRAMS); libkos alloc spinlock (was unlocked across threads); keystore Account; gpu Rect; factory Entry; Default impls, let-chains, div_ceil, iter loops

crates/servers/log-server/src/server.rs

@@ -18,6 +18,12 @@ pub struct LogServer<O: FnMut(&[u8]) = fn(&[u8])> {
     out: O,
 }
 
+impl Default for LogServer {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl LogServer {
     /// Text goes nowhere.
     pub fn new() -> Self {