Boussole: step-by-step help after sexual assault

After a sexual assault, the first hours matter and the path is confusing. People do not know where to go, drug traces fade from blood within about a day and from urine within about five, and survivors retell their story to one professional after another while care teams rebuild a timeline from scattered notes. Boussole is an installable, mobile-first web app in French and English, with two sides. For the person, it shows help first (the 24/7 support line and 911), then the official care steps in order with their deadlines and sources, a map of verified Montréal resources, a private story encrypted on the device, and, only if they decide, a file prepared for a free legal-advice service with double consent. No AI touches this side, and the story never leaves the phone. For the care team at a designated centre, Boussole offers per-item consent, a rule engine that sorts forensic samples by time window, and an AI-assisted timeline. The AI is the open model DeepSeek-V4-Flash, served by AMD Token Factory on AMD GPUs through an OpenAI-compatible API, called server-side only. Notes are pseudonymised in the browser and checked again on the server, which refuses to send anything that still contains an identifier. A line is kept only if it quotes the notes verbatim; culprit, credibility, score or diagnosis wording is removed and shown; a human validates every line, and each action is sealed in a SHA-256 hash-chained log. On fictional notes, a timeline typically takes 35 to 60 seconds on this trial endpoint, and every line kept by the guardrails quotes the notes verbatim. Uncertainty stays visible: the live answer is labelled with the provider and model, and if the AI is unavailable a pre-recorded answer is shown and labelled as such, with the reason. The demo uses fictional data only. The AI guides, the human decides.