Enhance logging and task management; enable trace facility, add scheduler state logging, and improve shutdown handling

software/init.zig

@@ -4,7 +4,8 @@ pub fn main() void {
     _ = add(1, 2);
     while (true) {
         nova64.log("Hello from Zig!");
-        // nova64.yield(1000);
+        // nova64.yield();
+        // nova64.sleep(1000);
     }
 }
 

software/nova64.zig

@@ -5,6 +5,10 @@ pub fn log(message: []const u8) void {
     nova64_log(message.ptr);
 }
 
-pub fn yield(timeout_ms: u32) void {
+pub fn sleep(timeout_ms: u32) void {
     nova64_yield(timeout_ms);
 }
+
+pub fn yield() void {
+    nova64_yield(0);
+}

software/tmp.zig

@@ -1,5 +0,0 @@
-extern "nova64" fn log(message: [*]const u8) void;
-
-pub fn main() void {
-    log(&"Hello from Zig!"[0]);
-}