restructure: rsnix kernel + shell crate + rsdos entry point

Architecture:
  rs-dos/  (workspace root, was raisernics/)
  ├── rsnix/     — kernel lib crate (uefi, serial, gop, ps2, interrupts, memory)
  ├── shell/     — shell lib crate (prompt, commands, line input)
  ├── rsdos/     — binary crate (efi_main, init, panic handler)
  └── rsboot/    — future git submodule

No functional changes — boots to shell prompt identically.
Version auto-pulled from Cargo.toml via env!("CARGO_PKG_VERSION").

1 files changed, 11 insertions, 0 deletions

diff --git a/rsnix/src/lib.rs b/rsnix/src/lib.rs
new file mode 100644
index 0000000..6c7fb3c
--- /dev/null
+++ b/rsnix/src/lib.rs
@@ -0,0 +1,11 @@
+#![no_std]
+
+extern crate alloc;
+
+pub mod uefi;
+pub mod serial;
+pub mod gop;
+pub mod font;
+pub mod ps2;
+pub mod interrupts;
+pub mod memory;