feat: cases (reports, rating reviews, removal and deletion requests, appeals) and notifications

Cases are one queue for what someone has to decide, each with a thread (internal notes for those deciding), an
assignee and a decision. Reports about a product go to the teams of the catalogs hosting it and to moderators, and
only the reporter and moderators know who reported. A creator lowering a rating opens a rating review; a catalog's
owner asking to delete it opens a deletion request; a catalog's team can ask for a product's removal everywhere; the
person an action affected can appeal it once, decided by another moderator (an admin may decide their own, flagged).
Resolving carries the case out: the rating is lowered, the product removed, the catalog deleted.

Notifications reach people on the website (a bell with the unread count) and their proxies (realtime): moderators'
edits to their products, removals and restores, decisions and replies on their cases, membership decisions.

Also: moderators can restore a removed product, and a product's creator and moderators can see it when it's adult
without an adult account (getting and wearing it still need one).

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/app/products/[id]/edit/page.tsx

@@ -162,7 +162,7 @@ export default async function EditProduct({ params }: { params: Promise<{ id: st
               <div className="grid gap-6 sm:grid-cols-2">
                 <Field>
                   <FieldLabel htmlFor="rating">Rating</FieldLabel>
-                  {locked("rating") || (product.rating === "adult" && !can("product:rate-lower")) ? (
+                  {locked("rating") ? (
                     <p className="text-sm capitalize">{product.rating}</p>
                   ) : (
                     <NativeSelect id="rating" name="rating" defaultValue={product.rating} className="w-48">
@@ -173,7 +173,9 @@ export default async function EditProduct({ params }: { params: Promise<{ id: st
                   {locked("rating") ? (
                     <LockedNote />
                   ) : (
-                    <FieldDescription>Raising it to adult is immediate; lowering it needs a moderator.</FieldDescription>
+                    <FieldDescription>
+                      Raising it to adult is immediate; {can("product:rate-lower") ? "lowering it is too." : "lowering it asks moderators."}
+                    </FieldDescription>
                   )}
                 </Field>
                 <Field>

apps/web/app/products/[id]/page.tsx

@@ -1,6 +1,7 @@
 import type { Metadata } from "next";
 import Link from "next/link";
 import { ActionForm, SubmitButton } from "@/components/forms";
+import { ReportForm } from "@/components/cases";
 import { formatSize, ProductImage, RatingTag, StateTags } from "@/components/products";
 import { PageHeader, Tag } from "@/components/status";
 import { DateTime } from "@/components/time";
@@ -150,6 +151,8 @@ export default async function ProductPage({ params }: { params: Promise<{ id: st
         </Card>
       )}
 
+      {me && !mine && !draft && <ReportForm about="product" id={id} />}
+
       {isModerator(me) && (
         <Card>
           <CardHeader>