Most resume tools either charge for ATS scanning ($49/mo Jobscan) or treat it as a one-shot diagnostic disconnected from the actual application flow. I run an indie AI job-prep SaaS at aimvantage.uk and the recurring user pain was the same: people only find out their CV broke parsing AFTER the rejection email lands. Today I shipped a fix — a free in-product ATS preview that lives inside the paid prep-pack flow. Here is the engineering write-up. The constraint The dashboard already accepts CV uploads (PDF, DOCX, TXT) and forwards them to Gemini for the full prep pack. The full pack costs 3 tokens.…