fix: capacities single-sourced in types (display MAX_WINDOWS/BUFFER_PAGES, storage MAX_CLIENTS), display + storage budgets derived from them, const asserts on VA layouts; kernel regions 64 -> 256

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

@@ -24,6 +24,8 @@ use types::permission::{Permission, PermissionSet};
 
 /// Client buffers sit high in storage's window, clear of its heap.
 const BUFFERS_VA: VirtualAddress = VirtualAddress::from_raw(0x0100_0000);
+// Every client's buffer fits below the disk driver's mappings (0x01D0_0000).
+const _: () = assert!(0x0100_0000 + types::storage::MAX_CLIENTS * protocol::BUFFER_SIZE <= 0x01D0_0000);
 
 const EP: CapSlot = CapSlot::const_new(0);
 

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

@@ -9,8 +9,7 @@ use crate::scope::Scope;
 
 mod session;
 
-/// Connections at once: every program reading files, apps among them.
-const MAX_CLIENTS: usize = 16;
+use types::storage::MAX_CLIENTS;
 /// 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;