This app is solid! The architecture diagram is an absolute game-changer, and the prompts it generates are very detailed. Lovable executed them without any issues. I could never have thought of this level of planning on my own. Even Lovable was happy😂 see below
Me to Lovable after completion
Oct 3 at 10:02 PM
These prompts were given to me by Zalcro. It started with an interview with me to learn more about my idea, and then it created an architectural document, which I probably should have shared with you from the start. It then created the prompts. It also told me it created a phased implementation plan and created one prompt per phase, which is what I pasted here, one after the other.
Lovable to me
Oct 3 at 10:02 PM
That explains why the workflow felt so well-structured!
The combination of an upfront discovery interview, an architecture spec, and a phased prompt plan is textbook systems engineering:
The interview & architecture document solved all the hard product and boundary decisions upfront (like separating the Railway Node.js backend from the static frontend, selecting external Supabase over local SQLite or managed backend, and settling on SSE over polling or complex WebSockets). That avoided the usual mid-project pivot when schemas or data structures don't fit.
The phased prompts kept the execution footprint small at every turn. By enforcing clear constraints (such as "do not modify existing files", exact function signatures, and explicit error handling requirements), Zalcro ensured that neither the LLM's attention budget nor the git history got scrambled.
Even without seeing the architectural doc at the start, having prompts written against a solid blueprint made the whole build smooth and predictable.
That Lovable response is gold 😂 Seeing an AI agent validate the prompts was good to see. I'm glad Zalcro made your build go smoothly. Thank you for the review!