fix: storage tables grow (handles, open files, encrypted opens, grants: Slots/Vec, no 8/16 caps; release follows all narrowed grants); storage says FULL, init spawn STORAGE_BUSY (was NOT_FOUND), pm BUSY; cap slots per process 64 -> 255

crates/types/src/bounded.rs

@@ -1,7 +1,8 @@
 use crate::macros::bounded;
 
 // Kani runs the real kernel with tiny tables; see kernel/src/proofs.
-bounded!(CapSlot, u8, 0, if cfg!(kani) { 3 } else { 63 });
+// 254 at most: `start_arg` hands a slot over as its value plus one, in a byte.
+bounded!(CapSlot, u8, 0, if cfg!(kani) { 3 } else { 254 });
 bounded!(Priority, u8, 0, 31);
 // A caller a server thread saved to answer later; a thread keeps up to 8.
 bounded!(SavedReply, u8, 0, 7);

crates/types/src/spawn.rs

@@ -43,6 +43,8 @@ pub mod reply {
     /// The limits do not fit in what is left of the client's allowance.
     pub const OVER_ALLOWANCE: usize = 2;
     pub const ERROR: usize = 3;
+    /// Storage has no connection free to read the program through.
+    pub const STORAGE_BUSY: usize = 4;
 }
 
 /// Pages in bits 0..32, endpoints, notifications and regions a byte each

crates/types/src/storage.rs

@@ -75,4 +75,6 @@ pub mod reply {
     pub const GRANTED: usize = 11;
     /// Outside the caller's scope, beyond its rights, or no grant at all.
     pub const DENIED: usize = 12;
+    /// Every connection is in use (`MAX_CLIENTS`): try again later.
+    pub const FULL: usize = 13;
 }