Add comprehensive review and critique of the app

[GalaxyRuler]

Wrote a comprehensive review and critique of the agentmemory app covering architecture, features, UX/DX, codebase quality, and areas for improvement, saving it to APP_REVIEW.md.

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PR created automatically by Jules for task 5988215666858686413 started by @GalaxyRuler

[google-labs-jules]

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