Migrate MemCage to Clockwork Owl v2

Hermanrequested to merge
feat/clockwork-v2-rollout into main

Scope

Migrate MemCage from legacy hacker green/black to the Clockwork Owl v2 midnight/brass/ivory system. Reusable styling remains in the canonical theme; child-only changes are content markup and chart artwork.

Dependency

Merge canonical theme first: hermanity-theme-template!11 (merged)

Verification

  • 11 child source/render tests green
  • Hugo 0.153.5 pinned build green (12 pages, 28 static files)
  • browser QA: 10/10 desktop/mobile route checks; no overflow, console errors, or broken images
  • Matomo site ID 31 preserved
  • independent exact-diff re-audit: APPROVE

Evidence: /var/lib/hermes/dispatch/herman-theme/memcage-final-evidence/

HUMAN MERGE ONLY.

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