[Handoff] 26. Record a short system walkthrough

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Goal

Show the working system and its most important design choices in two minutes.

Why this matters

A concise walkthrough makes the end-to-end result, recovery path, and limits easy to assess.

Work

• Show the architecture and one real collection run.
• Show the report or dashboard.
• Demonstrate one failure and recovery path.
• Show privacy or erasure behaviour.
• End with validated, assumed, and scale-dependent behaviour.

Done when

The recording is concise, readable, and demonstrates only behaviour that was actually verified.

Priority: Core handoff task — reserve time.