fix(image_build_manager): catalog validation, registry verification, and aarch64 fixes

[abhishek-sa1]

PR Description

Issues resolved by this Pull Request

Description of the Solution

Summary: This PR fixes catalog validation to only check structure (not deep referential integrity), resolves registry verification failures when catalog ID changes between builds, fixes log path references, and updates copyright year to 2026.

Changes

Catalog Validation

• Structure-only validation: Removed deep referential integrity checks (layer→group, group→package) from catalog_validator.py. Catalogs produced by repo_manager may contain forward references or optional components that are resolved at build time by parse_catalog.py
• Structural checks added: Validate layers have name and components fields, groups is a dictionary
• Docs updated: Updated architecture.md and image-builder-design.md to reflect structure-only validation

Registry Verification & Log Path Fixes

• Prefix matching: Changed registry verification from exact-name match to prefix matching (host/rhel-{group}_omnia_*) to handle catalog ID changes. When catalog is updated between builds, cached images retain old catalog IDs but verification was reconstructing names with the new ID
• Log path glob: Changed error message log paths from hardcoded suffix to glob pattern (ls *_compute_image.log) so users find the actual log file
• S3 artifact discovery: Added fallback prefix search when exact path fails, resolving build_status.yml entries for cached images
• build_status.yml: Use resolved image name from S3 discovery instead of reconstructing with current (possibly stale) catalog suffix
• regctl typo fix: Fixed /\ → tag ls \ in x86_64 tag check
• YAML line-length: Fixed line-length violation in main.yml line 131

Copyright Year Update

• Updated copyright headers from 2025 to 2026 in all yml and py files in src/image_build_manager

Lint Fixes

• Fixed trailing spaces in various files

Files Changed

File	Change Type	Description
src/image_build_manager/plugins/module_utils/input_validation/validators/catalog_validator.py	Modified	Removed referential integrity checks, added structural checks
src/image_build_manager/roles/build_os_images/tasks/build_compute_image_x86_64.yml	Modified	Prefix matching for registry verification, log path glob, regctl typo fix
src/image_build_manager/roles/build_os_images/tasks/build_compute_image_aarch64.yml	Modified	Prefix matching for registry verification, log path glob
src/image_build_manager/roles/build_os_images/tasks/main.yml	Modified	S3 artifact discovery fallback, resolved image name, line-length fix
src/image_build_manager/docs/architecture.md	Modified	Updated catalog validation description
src/image_build_manager/docs/design/image-builder-design.md	Modified	Updated catalog validation description
src/image_build_manager/**/*.yml	Modified	Copyright year 2025 → 2026
src/image_build_manager/**/*.py	Modified	Copyright year 2025 → 2026

Testing

• Verified catalog validation passes with sample catalog (ldms_group references ovis_ldms which is not defined)
• Tested registry verification with prefix matching handles catalog ID changes
• Verified S3 artifact discovery fallback finds images with old catalog IDs
• Confirmed build_status.yml uses resolved image names
• YAML line-length violation resolved

Backward Compatibility

• No breaking changes
• Catalog validation is less strict (structure-only), so previously failing catalogs may now pass
• Registry verification is more permissive (prefix match), so cached builds pass verification