guleaada/SebilTena

MedaGuard — pesticide safety & counterfeit-detection PWA for Ethiopian smallholder farmers (retriever-not-adviser). STAGING demonstration, not a live safety service. # Sebil Tena **ሰቢል ጤና** ("path of health") — formerly *MedaGuard*. Staging demonstration: . Safety-critical tool that helps Ethiopian smallholder farmers use pesticides safely and detect counterfeit / unregistered products. Farmers photograph a bottle; Sebil Tena tells them — in their language, with voice for non-readers — whether the product is genuine and registered, the correct dose for their crop, the safety gear and waiting period, and emergency first-aid if poisoned. It also reaches farmers with no smartphone at all, over SMS, and works with no signal. This is a **demonstration build**, not a farmer-facing launch. The registry is sample data and the first-aid content has not been reviewed by a toxicologist, so the release gate below deliberately refuses to run it as production. **Core principle: the AI is a retriever, not an adviser.** Dosage, first-aid, PPE and pre-harvest interval are never generated by a language model — they are looked up from a verified registry keyed on the official registration number. See SAFETY.md. Do not break this boundary. ## Status Milestones 1–14 complete: - **M1** — Express + libSQL (Turso / local-SQLite fallback), schema, seed script, `/api/verify-number`. - **M2** — scan pipeline: `lib/aiClient.js` vision fallback chain (Groq → OpenRouter → Gemini) and `/api/scan` with Tesseract-first OCR and a format-agnostic, multi-field anchor match. - **M3** — offline-first PWA frontend (`public/`): camera scan, colour+icon+voice verdict cards, crop-icon dosage picker, safety card, 6-language switch (native script) with auto-speak, pinned EMERGENCY, installable shell + service worker. Adds `GET /api/dosage`. - **M4** — (A) pre-recorded **audio-clip** layer (`public/js/audio.js`) replacing the Web Speech dependency: clip → TTS bridge → silent, with a number composer; (B) one-tap **offline poison-control** flow (route-of-exposure → DB first-aid, step-by-step) with `GET /api/first-aid` + `GET /api/emergency-bundle`. First-aid is pure DB …