v3: added password change/reset feature

.env.example

@@ -20,6 +20,13 @@ GERBEUR_PORT=8000
 # Example: http://localhost:3000,http://127.0.0.1:3000
 GERBEUR_ALLOWED_ORIGINS=http://localhost:3000,http://127.0.0.1:3000
 
+# Base URL of the frontend, used in email links (e.g. password reset).
+# Defaults to the API's own BASE_URL — correct when the API serves the frontend
+# (standard single-container deployment). Override when running the frontend on
+# a separate host or port (e.g. Vite dev server or a CDN origin).
+# Example: http://localhost:3000
+# GERBEUR_FRONTEND_URL=
+
 # Secret key used to sign JWTs. Generate with: openssl rand -hex 32
 GERBEUR_JWT_SECRET=