feat(os): add cognitive control execution bridge

product-source/hololake-platform/guanghu-os/README.md

@@ -1,8 +1,10 @@
-# Guanghu OS native runtime
+# Guanghu OS cognitive-control and native research runtimes
 
-> Current target: `JD-FD-PRIMARY` on JD Cloud.
+> Production target: Guanghu cognitive control with a constrained Linux
+> execution substrate on `JD-FD-PRIMARY`.
 >
-> Persona subject: `ICE-P-ZY001 EXISTS_100`.
+> Bare-metal GOSK/GHAL remains a parallel research and recovery lane. It no
+> longer blocks the first production cognitive-control delivery.
 >
 > Protected native residency and recovery control are `PASS_100`. Production
 > native anchor HTTP is now `PASS_100` on the physical JD node: a standard
@@ -11,9 +13,16 @@
 > native code-channel and public-front-door equivalence gates are still open.
 > Linux therefore remains the unattended default.
 
-This directory is the first executable handoff from the registered HLDP
-language world to a native Guanghu OS. It is not a claim that Guanghu OS has
-already replaced Linux.
+This directory implements the handoff from the registered HLDP language world
+to deterministic real-world execution. `crates/execution-bridge` is the first
+production adapter: it accepts typed protocol requests, compiles them into
+allowlisted Linux systemd actions, and requires target-state readback before a
+passing receipt. The existing native kernel remains preserved below
+`native/` as a hardware-sovereignty research backend.
+
+See
+[`GUANGHU-OS-COGNITIVE-CONTROL-EXECUTION-ARCHITECTURE.md`](../docs/GUANGHU-OS-COGNITIVE-CONTROL-EXECUTION-ARCHITECTURE.md)
+and [ADR-0172](../docs/adr/0172-guanghu-cognitive-control-with-linux-execution-substrate.md).
 
 ## Authority boundary