docs: CONTEXT.md — poweroff milestone, power.rs layout entry

1 files changed, 4 insertions, 1 deletions

diff --git a/CONTEXT.md b/CONTEXT.md
index d509b0c..0074969 100644
--- a/CONTEXT.md
+++ b/CONTEXT.md
@@ -95,6 +95,7 @@ Single Rust crate (`x86_64-unknown-uefi` target).  Module breakdown:
 - `memory.rs` — UEFI memory map, free-list heap allocator (grows from page
   allocator), bitmap page allocator
 - `paging.rs` — identity page-table helpers (map/unmap/query, large-page split)
+- `power.rs` — `ResetSystem`-based shutdown, hlt loop fallback
 - `gop.rs` — framebuffer access and text rendering
 - `font.rs` — 8×16 bitmap font data
 - `ps2.rs` — PS/2 keyboard driver (polling)
@@ -108,7 +109,7 @@ Single Rust crate (`x86_64-unknown-uefi` target).  Module breakdown:
 ✅ **Serial** — UART 16550 at COM1, 115200 8N1
 ✅ **Framebuffer** — GOP located, 8×16 bitmap font renders text
 ✅ **Keyboard** — PS/2 polling, scancode set 1, US QWERTY
-✅ **Shell** — commands: `help`, `echo`, `clear`, `hello`, `info`, `mem`, `halt`
+✅ **Shell** — commands: `help`, `echo`, `clear`, `hello`, `info`, `mem`, `halt`, `poweroff`
 ✅ **Heap allocator** — first-fit free-list with splitting + coalescing, `alloc`/`free`
   (boot-time self-test verifies alignment, reuse, and full coalescing)
 ✅ **Physical pages** — bitmap allocator over conventional regions, contiguous
@@ -117,6 +118,8 @@ Single Rust crate (`x86_64-unknown-uefi` target).  Module breakdown:
   own tables adopted at boot (boot-time self-test included)
 ✅ **Heap growth** — heap expands into the page allocator when exhausted
 ✅ **Shell** — `mmap` dumps the UEFI map, `stress` exercises alloc/free + growth
+✅ **Poweroff** — `poweroff`/`exit` shut down via UEFI `ResetSystem`
+  (ACPI S5; `halt` keeps the plain hlt loop)
 
 ## Target audience