Summary

Phase 7 of the ecosystem-wide directory structure standardization. logger_system already conforms closely to the ecosystem standard (include/kcenon/logger/, src/, GTest, modular cmake/*.cmake). This sub-EPIC covers final standard-conformance verification, minor cmake module polish, and ensuring the layout document references logger_system as a reference example.

Part of kcenon/common_system#657 (master EPIC).

Why

• logger_system is closest to the standard already — final-pass verification ensures the layout document itself is internally consistent
• Any small drift caught here informs whether the standard needs amendment before the master EPIC closes
• Once verified, logger_system can be cited alongside pacs_system and common_system as a reference layout

Scope

1. Audit include/kcenon/logger/ against the standard's naming and depth rules
2. Verify src/ does not retain any public headers
3. Confirm cmake/*.cmake decomposition matches the canonical template (logger has 7 modules; verify each maps to template's 8)
4. Confirm tests/ and integration_tests/ separation matches standard
5. Update README to reference the layout standard document

Child Issues

• chore(audit): standard-conformance audit of logger_system layout #627 — Standard-conformance audit
• chore(cmake): align logger_system cmake modules with canonical template #628 — cmake module template alignment
• docs(readme): link to kcenon-system-layout standard #629 — README link to layout standard
• chore(patches): corrective patches for audit deviations (conditional) #630 — (If gaps found) corrective patches

Acceptance Criteria

• Audit report attached as a comment showing zero deviations or with each deviation explicitly accepted
• cmake modules align with the canonical template
• README references the standard document
• No downstream impact (logger is mid-tier; consumers verified)