feat(ipc): saved replies: SaveReply/ReplySaved (8 per thread, released on thread death, unforgeable); terminal READ saved until Enter (line.rs editor, reader queue), now pinged

crates/servers/terminal-server/src/lib.rs

@@ -4,6 +4,7 @@
 extern crate alloc;
 
 pub mod grid;
+pub mod line;
 pub mod server;
 
 #[cfg(test)]
@@ -77,15 +78,6 @@ impl server::Console for Screen {
         let _ = syscall::set_timer(self.timer, types::time::Ticks::from_raw(at));
     }
 
-    fn next_key(&mut self) -> u8 {
-        loop {
-            if let Some(key) = self.poll_key() {
-                return key;
-            }
-            let _ = syscall::wait(self.notify);
-        }
-    }
-
     fn poll_key(&mut self) -> Option<u8> {
         while let Some(event) = display::poll_input(DISPLAY) {
             if let Some(key) = byte(event) {
@@ -95,6 +87,14 @@ impl server::Console for Screen {
         None
     }
 
+    fn save_reply(&mut self) -> Option<types::bounded::SavedReply> {
+        syscall::save_reply().ok()
+    }
+
+    fn answer(&mut self, reply: types::bounded::SavedReply, words: [usize; 4]) {
+        let _ = syscall::reply_saved(reply, words, None);
+    }
+
     fn take_focus(&mut self) {
         display::subscribe(DISPLAY, self.notify, Badge::new(KEYS_BIT));
         display::clear(DISPLAY, BG);