feat(userspace): log server sole console holder; init boots from manifest; adapter loads only init+storage

crates/libkos/src/io.rs

@@ -4,8 +4,13 @@ struct Writer;
 
 impl fmt::Write for Writer {
     fn write_str(&mut self, s: &str) -> fmt::Result {
-        // Without a console capability, output goes nowhere.
-        if let Some(console) = crate::start::console() {
+        // The log server first; a process without either prints nothing.
+        // A call, not a send: the text is out before the caller goes on.
+        if let Some(log) = crate::start::log() {
+            for chunk in s.as_bytes().chunks(types::log::TEXT_BYTES) {
+                let _ = crate::syscall::call(log, types::log::text_words(chunk), None);
+            }
+        } else if let Some(console) = crate::start::console() {
             for &b in s.as_bytes() {
                 crate::syscall::debug_putchar(console, b);
             }