sync with labv2.nix + standalone flake with toDisk app

Previous history (https://git.sagar.ch/dotfiles/labv2.nix/commits/branch/master/modules/apps/vmix):
- 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/registry/default.nix

@@ -0,0 +1,63 @@
+# Offline registry customization templates.
+# Each file returns raw registry entries (no header).
+# Templates are composed into bundles via mkReg which adds the .reg header.
+{ ... }:
+let
+  regHeader = "Windows Registry Editor Version 5.00";
+  mkReg = entries: ''
+    ${regHeader}
+    ${entries}
+  '';
+
+  rdpEntries = import ./rdp.nix;
+  telemetryEntries = import ./telemetry.nix;
+  errorReportingEntries = import ./error-reporting.nix;
+  defenderEntries = import ./defender.nix;
+  updatesEntries = import ./updates.nix;
+  smartScreenEntries = import ./smart-screen.nix;
+  hibernationEntries = import ./hibernation.nix;
+  systemRestoreEntries = import ./system-restore.nix;
+  networkEntries = import ./insecure-samba.nix;
+  privacyEntries = import ./privacy.nix;
+  aiEntries = import ./ai.nix;
+  consumerEntries = import ./consumer.nix;
+  performanceEntries = import ./performance.nix;
+  disableUcpdEntries = import ./disable-ucpd.nix;
+
+in rec {
+  # === Individual templates ===
+  disableTelemetry = { name = "no-telemetry"; windowsRegistry = mkReg telemetryEntries; };
+  disableErrorReporting = { name = "no-wer"; windowsRegistry = mkReg errorReportingEntries; };
+  disableDefender = { name = "no-defender"; windowsRegistry = mkReg defenderEntries; };
+  disableUpdates = { name = "no-updates"; windowsRegistry = mkReg updatesEntries; };
+  disableSmartScreen = { name = "no-smartscreen"; windowsRegistry = mkReg smartScreenEntries; };
+  disableHibernation = { name = "no-hibernate"; windowsRegistry = mkReg hibernationEntries; };
+  disableSystemRestore = { name = "no-restore"; windowsRegistry = mkReg systemRestoreEntries; };
+  networkTweaks = { name = "network"; windowsRegistry = mkReg networkEntries; };
+  disablePrivacyTracking = { name = "no-tracking"; windowsRegistry = mkReg privacyEntries; };
+  disableAI = { name = "no-ai"; windowsRegistry = mkReg aiEntries; };
+  disableConsumerFeatures = { name = "no-consumer"; windowsRegistry = mkReg consumerEntries; };
+  performanceTweaks = { name = "performance"; windowsRegistry = mkReg performanceEntries; };
+  disableUCPD = { name = "no-ucpd"; windowsRegistry = mkReg disableUcpdEntries; };
+
+  # === Convenience bundles ==
+
+  # Hardened: comprehensive debloat for lab VMs
+  hardened = {
+    name = "hardened";
+    windowsRegistry = mkReg (
+      telemetryEntries
+      + errorReportingEntries
+      + defenderEntries
+      + updatesEntries
+      + smartScreenEntries
+      + hibernationEntries
+      + systemRestoreEntries
+      + networkEntries
+      + privacyEntries
+      + aiEntries
+      + consumerEntries
+      + performanceEntries
+    );
+  };
+}