feat(ce): Sprint L — email auto invites + admin memberships UI

Email automatique pour les invites CE_MEMBER :
- sendCeInviteEmail(to, orgName, inviteUrl, inviterName?) : template
  best-effort (dry-run sans Resend), bouton CTA + lien direct en plain
  text. Mentionne TTL 14j + warning si pas le destinataire attendu.
- createInviteAction branche l'envoi automatique quand un email est
  renseigné dans le formulaire. Audit log gagne emailedAutomatically.
- InviteForm UI : affiche « lien généré · email envoyé » quand un
  email était fourni. Texte d'aide mis à jour.
- Sans email → comportement inchangé : lien à copier manuellement.

Admin /admin/carbets/[id] gagne section memberships :
- src/lib/admin/carbets.ts : getCarbetForEdit inclut organizations +
  listOrganizationsForLink helper (toutes orgs triées approved desc).
- 2 actions admin : linkCarbetToOrganizationAction (idempotent) +
  unlinkCarbetFromOrganizationAction. Audit scope=admin.carbets,
  events carbet.org.link / carbet.org.unlink.
- CarbetMemberships client component : liste les orgs liées (badge
  pending si org non approuvée) + select des orgs disponibles + boutons
  Lier/Délier. Désactive le select quand toutes les orgs sont déjà
  liées.

Le link admin permet de :
- Lier rétroactivement un carbet existant à un CE (cas où l'orga
  intègre un carbet d'un hôte individuel).
- Délier un carbet quand un CE part ou que le carbet repasse en
  gestion individuelle.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/admin/carbets/[id]/_components/CarbetMemberships.tsx

@@ -0,0 +1,125 @@
+"use client";
+
+import { useState, useTransition } from "react";
+
+type Org = { id: string; name: string; slug: string; approved: boolean };
+type LinkedOrg = Org & { addedAt: Date };
+
+type Props = {
+  carbetId: string;
+  linked: LinkedOrg[];
+  available: Org[];
+  linkAction: (carbetId: string, orgId: string) => Promise<{ ok: true; alreadyLinked: boolean } | { ok: false; error?: string }>;
+  unlinkAction: (carbetId: string, orgId: string) => Promise<{ ok: true } | { ok: false; error?: string }>;
+};
+
+export function CarbetMemberships({
+  carbetId,
+  linked,
+  available,
+  linkAction,
+  unlinkAction,
+}: Props) {
+  const [pending, startTransition] = useTransition();
+  const [selectedOrgId, setSelectedOrgId] = useState("");
+  const [error, setError] = useState<string | null>(null);
+
+  // Filtre les orgs non encore liées
+  const linkedIds = new Set(linked.map((l) => l.id));
+  const options = available.filter((o) => !linkedIds.has(o.id));
+
+  function link() {
+    if (!selectedOrgId) return;
+    setError(null);
+    startTransition(async () => {
+      const res = await linkAction(carbetId, selectedOrgId);
+      if (!res.ok) setError(res.error || "Échec de la liaison");
+      else setSelectedOrgId("");
+    });
+  }
+
+  function unlink(orgId: string) {
+    setError(null);
+    startTransition(async () => {
+      const res = await unlinkAction(carbetId, orgId);
+      if (!res.ok) setError(res.error || "Échec");
+    });
+  }
+
+  return (
+    <div className="space-y-3">
+      {linked.length === 0 ? (
+        <p className="text-sm text-zinc-500">
+          Aucune organisation liée. Le carbet est géré uniquement par son propriétaire individuel.
+        </p>
+      ) : (
+        <ul className="divide-y divide-zinc-100 rounded-md border border-zinc-200 bg-white">
+          {linked.map((o) => (
+            <li
+              key={o.id}
+              className="flex items-center justify-between gap-3 px-3 py-2 text-sm"
+            >
+              <div>
+                <span className="font-medium text-zinc-900">{o.name}</span>
+                <span className="ml-2 text-[11px] text-zinc-500">/{o.slug}</span>
+                {!o.approved ? (
+                  <span className="ml-2 rounded-full bg-amber-100 px-1.5 py-0.5 text-[9px] font-semibold uppercase tracking-wider text-amber-800 ring-1 ring-inset ring-amber-300">
+                    Pending
+                  </span>
+                ) : null}
+              </div>
+              <button
+                type="button"
+                disabled={pending}
+                onClick={() => unlink(o.id)}
+                className="rounded border border-rose-200 bg-white px-2 py-1 text-[11px] text-rose-700 hover:bg-rose-50 disabled:opacity-60"
+              >
+                Délier
+              </button>
+            </li>
+          ))}
+        </ul>
+      )}
+
+      {options.length > 0 ? (
+        <div className="flex flex-wrap items-center gap-2">
+          <select
+            value={selectedOrgId}
+            onChange={(e) => setSelectedOrgId(e.target.value)}
+            className="rounded-md border border-zinc-300 bg-white px-2 py-1.5 text-sm focus:border-zinc-900 focus:outline-none"
+          >
+            <option value="">— Choisir une organisation à lier —</option>
+            {options.map((o) => (
+              <option key={o.id} value={o.id}>
+                {o.name} {o.approved ? "" : "(pending)"}
+              </option>
+            ))}
+          </select>
+          <button
+            type="button"
+            disabled={pending || !selectedOrgId}
+            onClick={link}
+            className="rounded-md bg-emerald-600 px-3 py-1.5 text-sm font-semibold text-white hover:bg-emerald-700 disabled:opacity-50"
+          >
+            {pending ? "…" : "Lier"}
+          </button>
+        </div>
+      ) : (
+        <p className="text-[11px] text-zinc-500">
+          Toutes les organisations existantes sont déjà liées à ce carbet.
+        </p>
+      )}
+
+      {error ? (
+        <div className="rounded border border-rose-200 bg-rose-50 px-3 py-2 text-xs text-rose-700">
+          {error}
+        </div>
+      ) : null}
+
+      <p className="text-[11px] text-zinc-500">
+        Une organisation liée signifie que ses CE_MANAGERs peuvent éditer ce carbet en plus du
+        propriétaire nominal.
+      </p>
+    </div>
+  );
+}

src/app/admin/carbets/[id]/page.tsx

@@ -1,15 +1,23 @@
 import { notFound } from "next/navigation";
 import Link from "next/link";
+
+import { MediaUploader } from "@/components/MediaUploader";
+import { StatusBadge } from "@/components/admin/StatusBadge";
 import {
   getCarbetForEdit,
+  listOrganizationsForLink,
   listOwners,
   listPirogueProviders,
 } from "@/lib/admin/carbets";
+
 import { CarbetForm } from "../_components/CarbetForm";
-import { StatusBadge } from "@/components/admin/StatusBadge";
-import { MediaUploader } from "@/components/MediaUploader";
+import {
+  linkCarbetToOrganizationAction,
+  unlinkCarbetFromOrganizationAction,
+  updateCarbetAction,
+} from "../actions";
+import { CarbetMemberships } from "./_components/CarbetMemberships";
 import { StatusActions } from "./_components/StatusActions";
-import { updateCarbetAction } from "../actions";
 
 export const dynamic = "force-dynamic";
 
@@ -17,10 +25,11 @@ type PageProps = { params: Promise<{ id: string }> };
 
 export default async function EditCarbetPage({ params }: PageProps) {
   const { id } = await params;
-  const [carbet, owners, providers] = await Promise.all([
+  const [carbet, owners, providers, organizations] = await Promise.all([
     getCarbetForEdit(id),
     listOwners(),
     listPirogueProviders(),
+    listOrganizationsForLink(),
   ]);
   if (!carbet) notFound();
 
@@ -28,6 +37,14 @@ export default async function EditCarbetPage({ params }: PageProps) {
     "use server";
     return await updateCarbetAction(id, fd);
   };
+  const linkThis = async (carbetId: string, orgId: string) => {
+    "use server";
+    return await linkCarbetToOrganizationAction(carbetId, orgId);
+  };
+  const unlinkThis = async (carbetId: string, orgId: string) => {
+    "use server";
+    return await unlinkCarbetFromOrganizationAction(carbetId, orgId);
+  };
 
   return (
     <div className="mx-auto max-w-5xl space-y-6">
@@ -61,6 +78,25 @@ export default async function EditCarbetPage({ params }: PageProps) {
         </div>
       </header>
 
+      <section className="mb-6 rounded-lg border border-zinc-200 bg-white p-5 shadow-sm">
+        <h2 className="mb-3 text-sm font-semibold uppercase tracking-wider text-zinc-500">
+          Organisations co-gestionnaires (CE)
+        </h2>
+        <CarbetMemberships
+          carbetId={carbet.id}
+          linked={carbet.organizations.map((m) => ({
+            id: m.organization.id,
+            name: m.organization.name,
+            slug: m.organization.slug,
+            approved: m.organization.approved,
+            addedAt: m.addedAt,
+          }))}
+          available={organizations}
+          linkAction={linkThis}
+          unlinkAction={unlinkThis}
+        />
+      </section>
+
       <section className="mb-6 rounded-lg border border-zinc-200 bg-white p-5 shadow-sm">
         <h2 className="mb-3 text-sm font-semibold uppercase tracking-wider text-zinc-500">
           Médias

src/app/admin/carbets/actions.ts

@@ -213,6 +213,42 @@ export async function reorderMediaAction(carbetId: string, mediaId: string, dire
   return { ok: true as const };
 }
 
+export async function linkCarbetToOrganizationAction(carbetId: string, organizationId: string) {
+  await requireRole([UserRole.ADMIN]);
+  const session = await auth();
+  const actorEmail = session?.user?.email ?? null;
+  // findFirst pour idempotence : si déjà lié, on ne touche pas + on ne crash pas.
+  const existing = await prisma.organizationCarbetMembership.findUnique({
+    where: { organizationId_carbetId: { organizationId, carbetId } },
+    select: { organizationId: true },
+  });
+  if (existing) {
+    return { ok: true as const, alreadyLinked: true };
+  }
+  await prisma.organizationCarbetMembership.create({
+    data: {
+      organizationId,
+      carbetId,
+      addedByUserId: session?.user?.id ?? null,
+    },
+  });
+  await audit("carbet.org.link", carbetId, actorEmail, { organizationId });
+  revalidatePath(`/admin/carbets/${carbetId}`);
+  return { ok: true as const, alreadyLinked: false };
+}
+
+export async function unlinkCarbetFromOrganizationAction(carbetId: string, organizationId: string) {
+  await requireRole([UserRole.ADMIN]);
+  const session = await auth();
+  const actorEmail = session?.user?.email ?? null;
+  await prisma.organizationCarbetMembership
+    .delete({ where: { organizationId_carbetId: { organizationId, carbetId } } })
+    .catch(() => {});
+  await audit("carbet.org.unlink", carbetId, actorEmail, { organizationId });
+  revalidatePath(`/admin/carbets/${carbetId}`);
+  return { ok: true as const };
+}
+
 async function audit(
   event: string,
   entityId: string,