fix: restore Mesa patch wire + update README broken doc links

- Mesa recipe: re-add patches = ["P4-virgl-redox-disk-cache.patch"]
  (was dropped from recipe during iteration)
- README.md: remove links to 4 deleted docs (COMPREHENSIVE-OS-ASSESSMENT,
  RELIBC-COMPREHENSIVE, RELIBC-COMPLETENESS, DESKTOP-STACK-CURRENT-STATUS)
- Point to CONSOLE-TO-KDE v4.0 as the single canonical plan

README.md

@@ -60,13 +60,9 @@ The current public roadmap and execution model live in the
 For readers landing on GitHub, the most useful entry points are:
 
 - [Documentation Index](./docs/README.md) — canonical map of current vs historical docs
-- [Comprehensive OS Desktop Readiness Assessment](./local/docs/COMPREHENSIVE-OS-ASSESSMENT.md) — **canonical full-OS plan**: kernel, devices, DRM, Wayland, KDE, all blockers
-- [relibc Comprehensive Assessment](./local/docs/RELIBC-COMPREHENSIVE-ASSESSMENT.md) — end-to-end relibc assessment: patch chain, kernel interactions, graphics integration
-- [relibc Assessment and Improvement Plan](./local/docs/RELIBC-COMPLETENESS-AND-ENHANCEMENT-PLAN.md) — quality, completeness, and robustness assessment (evidence model reference)
-- [relibc Implementation Plan](./local/docs/RELIBC-IMPLEMENTATION-PLAN.md) — detailed engineering plan for closing relibc POSIX gaps
+- [Console to KDE Desktop Plan](./local/docs/CONSOLE-TO-KDE-DESKTOP-PLAN.md) — **canonical comprehensive implementation plan**: kernel→DRM→Mesa→Wayland→KDE, all blockers, honest assessment
+- [Kernel IPC Credential Plan](./local/docs/KERNEL-IPC-CREDENTIAL-PLAN.md) — kernel credential syscalls, IPC, RLIMIT (Phases K1-K2,K4 complete)
 - [relibc IPC Assessment and Improvement Plan](./local/docs/RELIBC-IPC-ASSESSMENT-AND-IMPROVEMENT-PLAN.md) — IPC-focused companion plan for bounded relibc compatibility layers
-- [Console to KDE Desktop Plan](./local/docs/CONSOLE-TO-KDE-DESKTOP-PLAN.md) — canonical path from console boot to hardware-accelerated KDE Plasma on Wayland
-- [Desktop Stack Current Status](./local/docs/DESKTOP-STACK-CURRENT-STATUS.md) — current build/runtime truth for Qt, Wayland, and KDE surfaces
 - [Script Behavior Matrix](./local/docs/SCRIPT-BEHAVIOR-MATRIX.md) — what the main sync/fetch/apply/build scripts do and do not guarantee
 
 Current subsystem-specific plans also include:

recipes/libs/mesa/recipe.toml

@@ -3,6 +3,7 @@ git = "https://gitlab.redox-os.org/redox-os/mesa.git"
 upstream = "https://gitlab.freedesktop.org/mesa/mesa"
 branch = "redox-24.0"
 shallow_clone = true
+patches = ["../../../local/patches/mesa/P4-virgl-redox-disk-cache.patch"]
 [build]
 template = "custom"
 dependencies = [