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Working-slice evidence
03 / Build • 30 min review + build time
Make one workflow work.
A working product slice with tested recovery and a clear account of its limits.
Working-slice evidence
Understand the move.
Build the risky part first: the smallest route from a real input to a useful result. Use a coding agent where it helps, but give it acceptance criteria and inspect what it produces.
A happy-path demo is only one check. Try missing input, a slow request, a lost connection and a small screen. Say exactly what you tested and what remains uncertain.
Worked example · the studio intake page
The save is part of the product
The shared intake works on a phone. A missing answer is explained beside its field. We dropped the connection after submission: the draft stayed available and retrying did not create a second brief. Recorded the test steps and linked the build. File attachments are not supported yet.
A working result, repeatable failure checks and honest limits make the claim inspectable.
Compare with a weaker answer
The agent finished the build. The screenshots look great. Ready to launch.
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