refactor: rename fragments directory to ingredients and update all references

- Directory rename: fragments/ → ingredients/ (54 .ks files)
- Updated all Python scripts:
  * tests/integration/conftest.py - fixture renames
  * tests/integration/test_integration.py - constant and path updates
  * tests/test_recipe_generator.py - updated test assertions
  * recipe-generator/validators.py - updated comments and error messages
  * recipe-generator/recipe_generator.py - updated comment
- Updated all YAML files:
  * recipe-generator/recipe_templates.yaml - 66 path references
  * .gitea/workflows/validate-fragments.yaml → validate-ingredients.yaml
  * .gitea/workflows/test-generation.yaml - path patterns
- Updated scripts:
  * bin/ksflatten-relative - updated path detection
- Updated test file:
  * tests/integration/test_fragments.py → test_ingredients.py
- Updated documentation:
  * DEVELOPMENT.md - simplified references
  * DEVELOPMENT_QUICK.md - updated examples
  * tests/container/README.md - test references
- Regenerated all recipes (16 files) with ingredient paths
- Updated test fixtures (7 files)
- All integration tests pass (5/5)
- All unit tests pass (29/31 - 2 pre-existing failures unrelated)

ingredients/packages/virtual-machine-manager/post-scripts.ks

@@ -0,0 +1,56 @@
+# Virt-manager post-installation configuration
+
+%post --nochroot --log=/mnt/sysimage/root/vmm-post-scripts.log # Beginning of %post section
+
+# Create a file to autostart virt-manager
+cat > /mnt/sysimage/etc/xdg/autostart/virt-manager.desktop << EOF
+[Desktop Entry]
+Type=Application
+Name=Virtual Machine Manager
+Exec=virt-manager
+EOF
+
+# Modify the default virt-manager behavior for misc. options
+cat >> /mnt/sysimage/usr/share/glib-2.0/schemas/org.virt-manager.virt-manager.gschema.override<< EOF
+
+[org.virt-manager.virt-manager]
+xmleditor-enabled=true
+manager-window-height=600
+manager-window-width=200
+
+[org.virt-manager.virt-manager.connections]
+uris=['qemu:///system', 'qemu:///session']
+autoconnect=['qemu:///session']
+
+[org.virt-manager.virt-manager.vmlist-fields]
+cpu-usage=false
+
+[org.virt-manager.virt-manager.stats]
+update-interval=3
+enable-disk-poll=true
+enable-memory-poll=true
+enable-net-poll=true
+
+[org.virt-manager.virt-manager.console]
+scaling=2
+resize-guest=1
+autoconnect=false
+
+[org.virt-manager.virt-manager.details]
+show-toolbar=false
+
+[org.virt-manager.virt-manager.new-vm]
+storage-format='raw'
+cpu-default='host-model'
+graphics-type='spice'
+
+[org.virt-manager.virt-manager.confirm]
+forcepoweroff=false
+removedev=false
+unapplied-dev=false
+
+EOF
+
+glib-compile-schemas /mnt/sysimage/usr/share/glib-2.0/schemas/
+
+%end # End of the %post section