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/initial-setup/desktop/config.ks

@@ -0,0 +1,9 @@
+# Desktop initial-setup configuration
+
+firstboot --enable # Enable the Setup Agent to start at boot time
+
+%packages --exclude-weakdeps
+
+initial-setup
+
+%end

ingredients/initial-setup/generic-wayland/config.ks

@@ -0,0 +1,11 @@
+# Initial setup - generic wayland desktop mode
+
+firstboot --enable # Initial Setup will start after the first reboot
+
+%packages --exclude-weakdeps # Beginning of the packages section. Excludes weak package dependencies.
+
+# TO BE TESTED -> initial-setup-gui # Graphical user interface for the initial-setup utility
+# TO BE TESTED -> initial-setup-gui-wayland-generic.x86_64 # Run the initial-setup GUI in Wayland
+gnome-initial-setup # Add GNOME initial setup too to let user create local account.
+
+%end # End of the packages section

ingredients/initial-setup/gnome/config.ks

@@ -0,0 +1,25 @@
+# Initial setup - GNOME desktop mode
+
+firstboot --enable # Initial Setup will start after the first reboot
+
+%packages --exclude-weakdeps # Beginning of the packages section. Excludes weak package dependencies.
+
+# TO BE TESTED -> initial-setup-gui # Graphical user interface for the initial-setup utility
+# TO BE TESTED -> initial-setup-gui-wayland-generic.x86_64 # Run the initial-setup GUI in Wayland
+gnome-initial-setup # Add GNOME initial setup too to let user create local account.
+
+%end # End of the packages section
+
+# %post --nochroot --log=/mnt/sysimage/root/initial-setup-gnome.log # Beginning of %post section. Those commands are executed outside the chroot environment. Add logging.
+# 
+# truncate -s 0 /mnt/sysimage/usr/share/gnome-initial-setup/vendor.conf # remove content of vendor.conf so that all options are made available
+# 
+# ## Append lines to existing vendor.conf file, so that options are skipped upon reboot
+# cat >> /mnt/sysimage/usr/share/gnome-initial-setup/vendor.conf<< EOF
+# [pages]
+# skip=privacy
+# [goa]
+# providers=local-first!
+# EOF
+# 
+# %end # End of the %post section

ingredients/initial-setup/server/config.ks

@@ -0,0 +1,9 @@
+# Initial setup - server mode
+
+firstboot --enable --reconfig # Enable the Setup Agent to start at boot time in reconfiguration mode. This mode enables the language, mouse, keyboard, root password, security level, time zone, and networking configuration options in addition to the default ones
+
+%packages --exclude-weakdeps # Beginning of the packages section. Excludes weak package dependencies.
+
+initial-setup # Initial setup package
+
+%end # End of the packages section