Web: parcours d'inscription réordonné — régime, foyer (optionnel), allergènes (step 7/8)

- Ordre: régime (1) → foyer (2) → allergènes (3), au lieu de
  foyer → régime → allergènes
- L'étape foyer est désormais optionnelle: créer, rejoindre par code
  d'invitation, ou passer (aucun foyer n'est créé au signup)

apps/web/src/pages/SignupPage.tsx

@@ -37,7 +37,7 @@ export function SignupPage() {
   const [formError, setFormError] = useState<string | null>(null);
   const [isSubmitting, setIsSubmitting] = useState(false);
 
-  /** Validates, then submits the form; on success, starts the household/regime/allergens onboarding wizard rather than going straight to the home. */
+  /** Validates, then submits the form; on success, starts the regime/household/allergens onboarding wizard rather than going straight to the home. */
   async function handleSubmit(e: FormEvent) {
     e.preventDefault();
     setFormError(null);
@@ -52,7 +52,7 @@ export function SignupPage() {
     setIsSubmitting(true);
     try {
       await signup(result.data);
-      navigate("/onboarding/foyer");
+      navigate("/onboarding/regime");
     } catch (err) {
       // ApiError.code is looked up through ErrorMessageService so the
       // label is centralized and localized — never display err.message

apps/web/src/pages/onboarding/OnboardingAllergensPage.tsx

@@ -13,8 +13,8 @@ import "./onboarding.scss";
  * `/onboarding/allergenes`. Starts from an empty selection — a freshly
  * signed-up profile has none yet, so there's no need for the extra
  * `GET /profile/allergies` round trip a "resume where I left off" flow
- * would require (the `/foyer` settings page, task 10, is the always-fetch
- * source of truth for editing an existing selection later).
+ * would require (the `/parametres/preferences` settings page is the
+ * always-fetch source of truth for editing an existing selection later).
  */
 export function OnboardingAllergensPage() {
   const { t } = useTranslation();
@@ -68,13 +68,13 @@ export function OnboardingAllergensPage() {
         ) : (
           <>
             <AllergySelect
-              legend={t("household.form.allergiesLabel")}
+              legend={t("preferences.form.allergiesLabel")}
               allergies={allergies.filter((allergy) => allergy.kind === "ALLERGY")}
               value={allergyIds}
               onChange={setAllergyIds}
             />
             <AllergySelect
-              legend={t("household.form.intolerancesLabel")}
+              legend={t("preferences.form.intolerancesLabel")}
               allergies={allergies.filter((allergy) => allergy.kind === "INTOLERANCE")}
               value={allergyIds}
               onChange={setAllergyIds}

apps/web/src/pages/onboarding/OnboardingDietPage.tsx

@@ -10,7 +10,7 @@ import { errorMessageService } from "../../services/error-message.service";
 import "./onboarding.scss";
 
 /**
- * Second step of the post-signup onboarding wizard, routed at
+ * First step of the post-signup onboarding wizard, routed at
  * `/onboarding/regime`. Initial selection comes from `useAuth()`'s
  * already-loaded profile (`user.dietId`) — freshly signed-up, this is
  * `null` — no extra fetch needed just to know the starting value, unlike
@@ -48,7 +48,7 @@ export function OnboardingDietPage() {
     setIsSubmitting(true);
     try {
       await apiClient.updateDiet(dietId);
-      navigate("/onboarding/allergenes");
+      navigate("/onboarding/foyer");
     } catch (err) {
       const code = err instanceof ApiError ? err.code : ErrorCode.INTERNAL_ERROR;
       setFormError(errorMessageService.getLabel(code));
@@ -60,7 +60,7 @@ export function OnboardingDietPage() {
   return (
     <main className="onboarding-page">
       <form className="onboarding-card" onSubmit={handleSubmit} noValidate>
-        <p className="onboarding-step">{t("onboarding.step", { current: 2, total: 3 })}</p>
+        <p className="onboarding-step">{t("onboarding.step", { current: 1, total: 3 })}</p>
         <h1>{t("onboarding.diet.title")}</h1>
 
         {isLoading ? (

apps/web/src/pages/onboarding/OnboardingHouseholdPage.tsx

@@ -1,4 +1,4 @@
-import { ErrorCode, renameHouseSchema } from "@batch-cooking/shared";
+import { ErrorCode, type HouseView, renameHouseSchema } from "@batch-cooking/shared";
 import { type FormEvent, useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
 import { useNavigate } from "react-router-dom";
@@ -9,30 +9,32 @@ import { errorMessageService } from "../../services/error-message.service";
 import "./onboarding.scss";
 
 /**
- * First step of the post-signup onboarding wizard, routed at
- * `/onboarding/foyer` — behind {@link RequireAuth} (see `App.tsx`), reached
- * right after `POST /auth/signup` creates the account and its household
- * (auto-named, see `auth.service.ts`). Prefills the current (default) name
- * so continuing without editing it is a valid, implicit "skip" — there's
- * no separate skip button anywhere in this wizard, see `DietSelect`/
- * `AllergySelect` for the same choice on the following steps.
+ * Second step of the post-signup onboarding wizard, routed at
+ * `/onboarding/foyer` — unlike the regime/allergens steps, this one is
+ * genuinely optional rather than just "skippable via an unedited default":
+ * no household is created at signup anymore (see the API's
+ * `auth.service.ts`), so there's nothing to prefill or implicitly keep by
+ * pressing "Continuer" — the visitor explicitly creates one, joins one by
+ * invite code, or skips the step outright via {@link SkipButton}.
+ *
+ * Still checks `getCurrentHouse()` on mount and skips straight to the
+ * "already have one" state if it finds one — defensive against revisiting
+ * this step (e.g. browser back) after already creating/joining a
+ * household earlier in the same wizard run.
  */
 export function OnboardingHouseholdPage() {
   const { t } = useTranslation();
   const navigate = useNavigate();
 
-  const [name, setName] = useState("");
   const [isLoading, setIsLoading] = useState(true);
-  const [fieldErrors, setFieldErrors] = useState<Record<string, string>>({});
-  const [formError, setFormError] = useState<string | null>(null);
-  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [house, setHouse] = useState<HouseView | null>(null);
 
   useEffect(() => {
     let cancelled = false;
     apiClient
       .getCurrentHouse()
-      .then((house) => {
-        if (!cancelled && house) setName(house.name);
+      .then((result) => {
+        if (!cancelled) setHouse(result);
       })
       .finally(() => {
         if (!cancelled) setIsLoading(false);
@@ -42,21 +44,58 @@ export function OnboardingHouseholdPage() {
     };
   }, []);
 
+  function goToNextStep() {
+    navigate("/onboarding/allergenes");
+  }
+
+  return (
+    <main className="onboarding-page">
+      <div className="onboarding-card">
+        <p className="onboarding-step">{t("onboarding.step", { current: 2, total: 3 })}</p>
+        <h1>{t("onboarding.household.title")}</h1>
+
+        {isLoading ? (
+          <p>{t("onboarding.loading")}</p>
+        ) : house !== null ? (
+          <>
+            <p>{t("onboarding.household.alreadyHasHouse", { name: house.name })}</p>
+            <button type="button" onClick={goToNextStep}>
+              {t("onboarding.continue")}
+            </button>
+          </>
+        ) : (
+          <>
+            <p className="onboarding-subtitle">{t("onboarding.household.subtitle")}</p>
+            <CreateHouseholdForm onDone={goToNextStep} />
+            <JoinHouseholdForm onDone={goToNextStep} />
+            <SkipButton onSkip={goToNextStep} />
+          </>
+        )}
+      </div>
+    </main>
+  );
+}
+
+function CreateHouseholdForm({ onDone }: { onDone: () => void }) {
+  const { t } = useTranslation();
+  const [name, setName] = useState("");
+  const [fieldErrors, setFieldErrors] = useState<Record<string, string>>({});
+  const [formError, setFormError] = useState<string | null>(null);
+  const [isSubmitting, setIsSubmitting] = useState(false);
+
   async function handleSubmit(e: FormEvent) {
     e.preventDefault();
     setFormError(null);
-
     const result = renameHouseSchema.safeParse({ name });
     if (!result.success) {
       setFieldErrors(fieldErrorsFrom(result.error));
       return;
     }
     setFieldErrors({});
-
     setIsSubmitting(true);
     try {
-      await apiClient.renameHouse(result.data.name);
-      navigate("/onboarding/regime");
+      await apiClient.createHouse(result.data.name);
+      onDone();
     } catch (err) {
       const code = err instanceof ApiError ? err.code : ErrorCode.INTERNAL_ERROR;
       setFormError(errorMessageService.getLabel(code));
@@ -66,23 +105,62 @@ export function OnboardingHouseholdPage() {
   }
 
   return (
-    <main className="onboarding-page">
-      <form className="onboarding-card" onSubmit={handleSubmit} noValidate>
-        <p className="onboarding-step">{t("onboarding.step", { current: 1, total: 3 })}</p>
-        <h1>{t("onboarding.household.title")}</h1>
-
-        {isLoading ? (
-          <p>{t("onboarding.loading")}</p>
-        ) : (
+    <form onSubmit={handleSubmit} noValidate>
+      <h2>{t("household.noHouse.createTitle")}</h2>
       <HouseNameField value={name} onChange={setName} error={fieldErrors.name} />
-        )}
-
       {formError && <p className="form-error">{formError}</p>}
-
-        <button type="submit" disabled={isSubmitting || isLoading}>
-          {t("onboarding.continue")}
+      <button type="submit" disabled={isSubmitting}>
+        {t("household.noHouse.createButton")}
       </button>
     </form>
-    </main>
+  );
+}
+
+function JoinHouseholdForm({ onDone }: { onDone: () => void }) {
+  const { t } = useTranslation();
+  const [inviteCode, setInviteCode] = useState("");
+  const [formError, setFormError] = useState<string | null>(null);
+  const [isSubmitting, setIsSubmitting] = useState(false);
+
+  async function handleSubmit(e: FormEvent) {
+    e.preventDefault();
+    setFormError(null);
+    setIsSubmitting(true);
+    try {
+      await apiClient.joinHouse(inviteCode.trim());
+      onDone();
+    } catch (err) {
+      const code = err instanceof ApiError ? err.code : ErrorCode.INTERNAL_ERROR;
+      setFormError(errorMessageService.getLabel(code));
+    } finally {
+      setIsSubmitting(false);
+    }
+  }
+
+  return (
+    <form onSubmit={handleSubmit} noValidate>
+      <h2>{t("household.noHouse.joinTitle")}</h2>
+      <label htmlFor="inviteCode">{t("household.noHouse.joinLabel")}</label>
+      <input
+        id="inviteCode"
+        value={inviteCode}
+        onChange={(e) => setInviteCode(e.target.value.toUpperCase())}
+        autoComplete="off"
+      />
+      {formError && <p className="form-error">{formError}</p>}
+      <button type="submit" disabled={isSubmitting || inviteCode.trim().length === 0}>
+        {t("household.noHouse.joinButton")}
+      </button>
+    </form>
+  );
+}
+
+/** No API call — skipping just moves on, same "nothing to persist" idea as the regime/allergens steps' own skippability. */
+function SkipButton({ onSkip }: { onSkip: () => void }) {
+  const { t } = useTranslation();
+  return (
+    <button type="button" className="onboarding-skip" onClick={onSkip}>
+      {t("onboarding.household.skip")}
+    </button>
   );
 }

apps/web/src/pages/onboarding/onboarding.scss

@@ -36,6 +36,11 @@
     margin-bottom: var(--space-sm);
   }
 
+  h2 {
+    margin: var(--space-md) 0 var(--space-xs);
+    font-size: var(--font-size-base);
+  }
+
   button {
     margin-top: var(--space-md);
     padding: 0.6rem;
@@ -59,6 +64,24 @@
   }
 }
 
+// The household step's "skip" action — a plain text link, not another
+// filled button, so it doesn't visually compete with "Créer"/"Rejoindre"
+// right above it (this is the one step of the wizard offering three
+// distinct actions instead of one). The extra specificity of
+// `.onboarding-card .onboarding-skip` (a class, not just `button`) is what
+// lets this win over `.onboarding-card button`'s filled style above.
+.onboarding-card .onboarding-skip {
+  background: none;
+  color: var(--color-text-muted);
+  font-weight: 600;
+  text-decoration: underline;
+
+  &:hover:not(:disabled) {
+    color: var(--color-text);
+    background: none;
+  }
+}
+
 .onboarding-step {
   color: var(--color-text-muted);
   font-size: var(--font-size-xs);
@@ -68,6 +91,15 @@
   margin: 0 0 var(--space-sm);
 }
 
+// The household step's "this is optional" hint — same muted tone as
+// `.onboarding-step` above, but a normal sentence (no uppercase transform).
+.onboarding-subtitle {
+  color: var(--color-text-muted);
+  font-size: var(--font-size-sm);
+  text-align: center;
+  margin: 0 0 var(--space-sm);
+}
+
 .form-error {
   color: var(--color-error);
   font-size: var(--font-size-sm);