chore(staging): 🌱 graduate MindGarden brand assets

[szmyty]

Summary

• remove the MindGarden banner from Empathy’s staging area
• remove the MindGarden architecture artwork from Empathy’s staging area
• preserve Empathy’s ownership boundary now that MindGarden owns the assets directly

Destination

The exact files are added and used by egohygiene/mindgarden#36. Their Git blob SHAs are unchanged across the repository move.

Validation

• python3 -m unittest tests.test_staging_home_audit --verbose --locals --failfast --buffer --catch — 8 tests passed
• compared the branch against main: exactly two files removed

Merge order

Merge egohygiene/mindgarden#36 first so the repository-owned copies land before the staging copies are removed.

[devactivity-app]

Pull Request Summary by devActivity

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