sync with labv2.nix + standalone flake with toDisk app

Previous history:
- c359054 daku working!
- 8de5cff fix integer overflow in vmix network lib
- 9c25a66 daku on 25.05. with ollama
- 385a3bf vmix enables relaxed sandbox
- c363da1 restructure vmixLib into linux/windows subattrs with OS-specific customizeImage
- edd4dc2 vmix: port namespace model and module improvements from conf.nix
- 6666ecf vmix: add SPICE support, install virtio guest tools with SPICE agent
- 46f5671 vmix: add QEMU guest agent channel for Windows VMs
- e1fea34 vmix: add Win11 LTSC 2024 image, refactor VirtIO driver selection
- c27ae68 vmix: make customizeImage chroot-sandboxed by default, opt-in impure
- 305fbac virt customize needs chroot for now due to usr bin env things. could be fixed later
- 264d30f vmix: add win10 VM on desk, disable SMB signing for guest Samba access
- 9b64f51 vmix: split Windows templates into per-category files, add comprehensive debloat
- ef91bf8 vmix: fix missing parent registry keys in Windows templates
- f87f340 win10 VM on panda with AMD GPU + USB passthrough
- 38e474f vmix: split Windows build into Audit Mode install + composable templates
- a6a8db3 vmix: win11 support, remove build VNC, switch VMs to SPICE
- 6cf5a21 generalize stage sets bg color, accent color and sets visual effects to performance
- a84849f remove rdp template since it doesn't even work
- 5245263 vmix: best performance template + generalize cleanup
- ab12dd3 vmix: use CopyProfile for best performance visual effects
- bce3326 vmix: CopyProfile for best performance visual effects
- 2496107 vmix: add app templates (7zip, VLC, ImageGlass, Edge WebView, VC++ runtimes)
- 29a6123 wip: debug default associations xml
- 2a2e5f5 vmix: fix DefaultAssociations.xml cmd.exe escaping
- cc6ff9d vmix: move DefaultAssociations.xml to template only
- a4a78ec vmix: add removeWMP template to remove Windows Media Player
- 3fe56de vmix: improved Edge removal (files, shortcuts, scheduled tasks)
- a491767 vmix: fully remove Edge via post-oobe AppxPackage removal
- 6ca1619 vmix: remove Edge DevToolsClient SystemApps + AppxPackage
- 0c1ec35 vmix: sandboxie windows app template
- 628bbd2 vmix: add Sandboxie-Plus template
- f055a41 vmix: reorganize templates, add file associations, remove Paint
- 34326f4 vmix: set Thorium as default browser via PS-SFTA in post-oobe
- 86af258 vmix: Active Setup for default browser (all users, no post-oobe needed)
- 35b8cb0 remove vnc display from thorium template
- c7e0af6 vmix: fix Win11 generalize timeout + UCPD disable for URL associations
- 43a1345 vmix: add Office 2024 template + Ohook activation in generalize
- 03bbce0 vmix: updated office installation xml. more privacy options enabled
- 790a0ee vmix: thorium installation - hide SFTA window
- a0e5c18 vmix: fix office install.bat call + add privacy registry policies
- 3df38ca vmix: fix Ohook activation + suppress Office theme dialog
- df39ba3 vmix: remove sandboxie shortcut from desktop
- 50d5972 vmix: skip Sandboxie desktop shortcut via installer flag
- ee2fa0f vmix: fix win10 default browser
- 938315b vmix: windows: set accent color to automatic. remove accent color from unnecessary elements
- beceda8 vmix: allow ISO-only VMs without OS disk, add WinPE VM to panda

Flake outputs: overlays.default, nixosModules.default, lib, apps.toDisk

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

lib/images/windows/templates/default.nix

@@ -0,0 +1,43 @@
+# Windows customization templates.
+# Templates can provide:
+#   windowsRegistry — offline registry merge (fast, no boot)
+#   auditScript     — runs in Audit Mode via QEMU boot
+#   cdroms          — ISOs to attach when booting for auditScript
+#   uploads         — files to inject into the image before auditScript
+{ pkgs, lib, system, drivers, makeFilesISO, ... }:
+let
+  args = { inherit pkgs lib system drivers makeFilesISO; };
+in {
+  # Essentials (drivers, runtimes, removals, performance)
+  essentials = {
+    virtioTools     = import ./essentials/virtio-tools.nix args;
+    removeEdge      = import ./essentials/remove-edge.nix args;
+    removeIE        = import ./essentials/remove-ie.nix args;
+    removeWMP       = import ./essentials/remove-wmp.nix args;
+    removePaint     = import ./essentials/remove-paint.nix args;
+    amdGpuDrivers   = import ./essentials/amd-gpu-drivers.nix args;
+    vcppRuntimes    = import ./essentials/vcpp-runtimes.nix args;
+    bestPerformance      = import ./essentials/best-performance.nix args;
+    clearFileAssociations = import ./essentials/clear-file-associations.nix args;
+  };
+
+  # Applications
+  apps = {
+    thorium    = import ./apps/thorium.nix args;
+    edgeWebview = import ./apps/edge-webview.nix args;
+    sevenZip   = import ./apps/7zip.nix args;
+    vlc        = import ./apps/vlc.nix args;
+    imageGlass = import ./apps/imageglass.nix args;
+    sandboxie  = import ./apps/sandboxie.nix args;
+    office     = import ./apps/office.nix args;
+  };
+
+  # Default file associations policy
+  defaultApps = import ./default-apps.nix args;
+
+  # Generalize (sysprep + OOBE)
+  generalize = import ./generalize.nix args;
+
+  # Offline registry templates
+  reg = import ./registry args;
+}