laptop image tiers, devshell, partition preserve, cleanup

Images:
- laptopUpstream: bare OS install with AHCI, no templates
- laptopSlim: essentials only (debloat, registry tweaks)
- laptop: full (essentials + all apps)
- win10/win11 images use rec for self-references

CLI:
- preserve recovery partition (4) during disk copy
- expand partition 3 up to partition 4 boundary
- remove VNC CLI flag (use vncDisplay in nix configs instead)

Flake:
- add devShell with vmix alias and PS1 prompt

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/images/windows/win10/images.nix

@@ -2,7 +2,7 @@
 # Pipeline: makeImage (Audit Mode) → essentials → apps → registry → generalize
 { pkgs, lib, system, windows, upstreamISOs, ... }:
 with windows;
-{
+rec {
   ltsc = rec {
     upstream = makeImage {
       name = "win10-ltsc-2021";
@@ -32,10 +32,14 @@ with windows;
     withAMDGPU = customizeImage basic templates.essentials.amdGpuDrivers;
   };
 
-  laptop = customizeImageFold (makeImage {
+  laptopUpstream = makeImage {
     name = "win10-ltsc-2021-laptop";
     upstreamISO = upstreamISOs.win10-ltsc-2021;
     productKey = "M7XTQ-FN8P6-TTKYV-9D4CC-J462D";
     useAHCI = true;
-  }) templates.bundles.laptop;
+  };
+
+  laptopSlim = customizeImageFold laptopUpstream templates.bundles.laptopSlim;
+
+  laptop = customizeImageFold laptopUpstream templates.bundles.laptop;
 }