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/repo/fedora-43-mirrors.ks

@@ -0,0 +1,5 @@
+# Fedora 43 repositories
+
+repo --name=fedora --mirrorlist=https://mirrors.fedoraproject.org/mirrorlist?repo=fedora-43&arch=x86_64 # Official Fedora mirror
+repo --name=updates --mirrorlist=https://mirrors.fedoraproject.org/mirrorlist?repo=updates-released-f43&arch=x86_64 # Official Fedora updates mirror
+url --mirrorlist=https://mirrors.fedoraproject.org/mirrorlist?repo=fedora-43&arch=x86_64 # Official Fedora updates mirror

ingredients/repo/rawhide-mirrors.ks

@@ -0,0 +1,4 @@
+# Fedora Rawhide repositories
+
+repo --name=rawhide --mirrorlist=https://mirrors.fedoraproject.org/mirrorlist?repo=rawhide&arch=x86_64
+url --mirrorlist=https://mirrors.fedoraproject.org/mirrorlist?repo=rawhide&arch=x86_64

ingredients/repo/rpmfusion-nonfree.ks

@@ -0,0 +1,21 @@
+# RPM Fusion non-free repositories
+
+# RPM fusion repositories
+# For the current release tree
+repo --name=rpmfusion-nonfree --mirrorlist=https://mirrors.rpmfusion.org/mirrorlist?repo=nonfree-fedora-$releasever&arch=$basearch --includepkgs=rpmfusion-nonfree-release
+# Updates for the current release tree
+repo --name=rpmfusion-nonfree-updates --mirrorlist=https://mirrors.rpmfusion.org/mirrorlist?repo=nonfree-fedora-updates-released-$releasever&arch=$basearch --includepkgs=rpmfusion-nonfree-release
+
+%post
+
+# Import RPM Fusion PGP Key. Courtesy of https://github.com/rpmfusion/rpmfusion-nonfree-remix-kickstarts/blob/master/rpmfusion-nonfree-live-base.ks
+echo "== RPM Fusion Nonfree: Base section =="
+echo "Importing RPM Fusion keys"
+rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-nonfree-fedora-*-primary
+echo "List of packages from RPM Fusion Nonfree:"
+rpm -qa --qf '%{NAME} %{SIGGPG:pgpsig} %{SIGPGP:pgpsig} \n' | grep -e 3DE8C682E38EE9BC0FDFEA47FCAE2EA87F858107 | awk ' { print $1 } ' | sort
+echo "List of incuded RPM Fusion packages with their size:"
+rpm -q --qf '%{SIZE} %{NAME}\n' $(rpm -qa --qf '%{NAME} %{SIGGPG:pgpsig} %{SIGPGP:pgpsig} \n' | grep -e 3DE8C682E38EE9BC0FDFEA47FCAE2EA87F858107 | awk ' { print $1 } ') | sort -n
+echo
+
+%end