Checkpoint: Migration complète vers authentification locale (JWT + bcrypt) : schéma DB (10 tables), routes tRPC (auth, users, etablissements, inventaire, capex, opex, parametres), page de login avec branding Itinova/Santinova, protection des routes, onglets Établissements et Utilisateurs branchés sur tRPC, import inventaire/établissements/utilisateurs via tRPC, 14 tests Vitest passants.

shared/_core/errors.ts

@@ -0,0 +1,19 @@
+/**
+ * Base HTTP error class with status code.
+ * Throw this from route handlers to send specific HTTP errors.
+ */
+export class HttpError extends Error {
+  constructor(
+    public statusCode: number,
+    message: string
+  ) {
+    super(message);
+    this.name = "HttpError";
+  }
+}
+
+// Convenience constructors
+export const BadRequestError = (msg: string) => new HttpError(400, msg);
+export const UnauthorizedError = (msg: string) => new HttpError(401, msg);
+export const ForbiddenError = (msg: string) => new HttpError(403, msg);
+export const NotFoundError = (msg: string) => new HttpError(404, msg);