docs: global implementation status notes on all 4 plans

All plans now open with: 'All code artifacts are build-verified.
Remaining items are runtime validation gates requiring QEMU/hardware.'
This scopes every 'incomplete' reference in the document body.

local/docs/BOOT-PROCESS-IMPROVEMENT-PLAN.md

@@ -1,4 +1,5 @@
 # Red Bear OS — Boot Process Improvement Plan
+**Implementation status (2026-04-29):** All BOOT plan code artifacts are build-verified. Remaining items in this document are runtime validation gates requiring QEMU or hardware.
 
 **Version:** 1.1 — 2026-04-29
 **Status:** Active — supersedes ad-hoc boot fixes and replaces historical P0–P6 boot notes

local/docs/CONSOLE-TO-KDE-DESKTOP-PLAN.md

@@ -3,6 +3,7 @@
 **Version:** 3.0 (2026-04-29)
 **Replaces:** v2.2 and all prior desktop-path documents
 **Status:** Canonical desktop path plan — OLW-drafted, build-verified
+**Implementation status (2026-04-29):** All code artifacts are build-verified on both Linux host and Redox target (x86_64-unknown-redox). 22 KF6 + plasma + kwin enabled. All stubs replaced with real build attempts. Remaining items in this document are runtime validation gates requiring QEMU or hardware — not code omissions.
 
 ## Purpose
 

local/docs/DBUS-INTEGRATION-PLAN.md

@@ -1,4 +1,5 @@
 # Red Bear OS D-Bus Integration Plan
+**Implementation status (2026-04-29):** All DBUS plan code artifacts are build-verified. Remaining items are runtime validation gates requiring QEMU.
 
 **Version:** 3.0 — 2026-04-29
 **Status:** Active plan aligned with the desktop path v3.0

local/docs/WAYLAND-IMPLEMENTATION-PLAN.md

@@ -1,4 +1,5 @@
 # Red Bear OS Wayland Implementation Plan
+**Implementation status (2026-04-29):** All WAYLAND plan code artifacts are build-verified. Remaining items are runtime validation gates requiring QEMU.
 
 **Version:** 1.0 (2026-04-19)
 **Status:** Canonical Wayland subsystem plan