feat(desktop): home app (system-only launch cap, LAUNCH_BADGE: apps+launch only), pm starts it with session (relaunch <=5); display keys F1/Alt+Tab next, F2 home, F4 close app (ROLE from launcher, terminal exempt), close returns to previous window; closed window -> app exits; shell 'name &'; launch by id; pm stack 8, storage 16 clients

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

@@ -9,7 +9,8 @@ use crate::scope::Scope;
 
 mod session;
 
-const MAX_CLIENTS: usize = 8;
+/// Connections at once: every program reading files, apps among them.
+const MAX_CLIENTS: usize = 16;
 /// Handles at or past this are never valid (the file systems hand out
 /// fewer), so ownership fits a small table.
 const MAX_HANDLES: usize = 16;