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, 5 insertions, 0 deletions

diff --git a/rsnix/src/font.rs b/rsnix/src/font.rs
new file mode 100644
index 0000000..e188513
--- /dev/null
+++ b/rsnix/src/font.rs
@@ -0,0 +1,5 @@
+/// 8×16 bitmap font.
+///
+/// Glyphs are generated at build time by `build.rs` from the system PSF2 font
+/// (`/usr/share/kbd/consolefonts/lat1-16.psfu.gz`).
+include!(concat!(env!("OUT_DIR"), "/font_data.rs"));