feat(domain-architecture): add code style guides and Galaxy structure for image_build_manager

[abhishek-sa1]

PR #4902 — Overall File Changes Summary

Fixes #4849

Total Files: 122 (response truncated — showing first 18 visible files)

Documentation Files (docs/)

File	Status	Changes
docs/README.rst	Modified	Updated to reflect domain-based docs structure
docs/code-style/README.md	Added	Code style guide index
docs/code-style/ansible.md	Added	Ansible/YAML style rules (166 lines)
docs/code-style/general.md	Added	General code style (copyright headers, file org)
docs/code-style/jinja2.md	Added	Jinja2 template style guide
docs/code-style/python.md	Added	Python style guide (pylint, docstrings)
docs/code-style/test_automation.md	Added	Test automation coding rules (419 lines)
docs/design/ansible-collections-migration.md	Added	Collection migration design (1,295 lines)

Image Build Manager Domain Files (src/image_build_manager/)

File	Status	Changes
docs/package-mapping-guide.md	Added	Functional group package mapping guide
docs/troubleshooting.md	Added	Common issues and debug tips
galaxy.yml	Added	Ansible Galaxy metadata (namespace: omnia, name: image_build, v2.3.0)
image_build_manager.yml	Removed	Top-level playbook removed (moved to playbooks/)
input/project_default/image_build_config.yml	Renamed	Moved from input/ to input/project_default/, added functional_groups section
library/MIGRATED_FROM_COMMON.md	Removed	Migration tracking file removed
meta/runtime.yml	Added	Ansible version compatibility (requires_ansible: >=2.14.0)
output/.gitkeep	Removed	Empty placeholder removed
playbooks/ansible.cfg	Modified	Updated paths to plugins/, added collections_paths
playbooks/build/ansible.cfg	Added	Sub-directory ansible.cfg for build playbooks

---

Summary of Changes

1. Code Style Guides Added — 6 new files in docs/code-style/ covering Ansible, Python, Jinja2, General, and Test Automation standards
2. Design Documentation — Ansible Collections migration design document added
3. Domain Documentation — Image Build Manager docs added (package mapping, troubleshooting)
4. Ansible Collection Structure — galaxy.yml and meta/runtime.yml added for Ansible Galaxy compliance
5. Playbook Reorganization — Top-level image_build_manager.yml removed, restructured into playbooks/ with sub-directory configs
6. Input File Restructuring — image_build_config.yml moved to input/project_default/ with functional_groups section
7. Path Updates — ansible.cfg updated to use plugins/ instead of library/, added collections_paths
8. Cleanup — Removed migration tracking file, .gitkeep placeholder