diff --git a/AGENTS.md b/AGENTS.md
index 8806129..61ec05d 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -9,9 +9,10 @@ Backend conventions
 - Use English for code identifiers/messages; keep “pont-bascule” as domain term.
 - API Platform operations are defined on Doctrine entities.
 - Reception entity is in `src/Entity/Reception.php`, with custom weigh endpoint `/receptions/weigh`.
-- Reception fields: `dsd`, `weight`, `date_reception`, `license_plate`, `current_step` (default 0), `is_valid` (default false).
-- `date_reception` is set by the UI, stored as `DateTimeImmutable`.
-- Weight entity (`src/Entity/Weight.php`) is 1–1 with Reception, weights stored as `int` (kg), dates nullable.
+- Reception fields: `date_reception`, `license_plate`, `current_step` (default 0), `is_valid` (default false).
+- `date_reception` is set by the UI, stored as `DateTimeImmutable`, serialized as `Y-m-d`.
+- Weight entity (`src/Entity/Weight.php`) is 1–N with Reception, each row stores `type` (`gross` or `tare`), `dsd`, `weight`, `weighed_at` (all nullable except `type`).
+- Weigh endpoint `/receptions/weigh` returns `PontBasculeReading` with `dsd`, `weight`, `weighedAt` (formatted `Y-m-d`).
 - Custom exception: `App\Exception\PontBasculeException` with French messages, mapped to 500 in provider.
 - Parsing of pont-bascule payload is in `src/Service/PontBasculePayloadDecoder.php`.
 - `config/reference.php` is auto-generated; keep it.
@@ -22,8 +23,11 @@ Frontend conventions
 - Tailwind custom color palette is `primary` (e.g. `bg-primary-500`).
 - API composable in `frontend/composables/useApi.ts` with `get/post/put/patch/delete` and default JSON/PATCH content types.
 - Pinia store: `frontend/stores/reception.ts` is the source of truth for the current reception.
+- Zod is used for form validation (e.g. `frontend/components/reception/reception-form.vue`); shared helpers live in `frontend/utils/zod-errors.ts`.
+- Weighing logic is shared via `frontend/composables/useWeighing.ts`.
 - Reception step UI uses store state (`currentStep`) in `frontend/pages/reception/[[id]].vue`.
 - Active nav styles in header use `NuxtLink` with `custom` slot.
+- Reusable UI components live under `frontend/components/ui/` and are auto-imported with `Ui` prefix (e.g. `UiLoadingDots`).
 
 Environment & routing
 - Frontend dev server: `npm run dev` in `frontend/`.