A solo founder's first 30 days on Master

Week one was scoping. One page, one job to be done, no database. The temptation is to describe the whole product in the first prompt; the faster path is to get one screen you would actually show a customer.

Week two added Master Cloud: auth, a single table with row-level security on by default, and a billing screen. The agent wrote the migration and the policies together, which is where most hand-rolled projects leak data.

Weeks three and four were pure iteration on feedback. Small prompts, visual edits for spacing, and a checkpoint before every risky change so rolling back cost nothing.