Implement share-link service (task 30)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/settings/actions.ts

@@ -1,11 +1,13 @@
 "use server";
 
 import { eq } from "drizzle-orm";
+import { revalidatePath } from "next/cache";
 import { db } from "@/lib/db";
 import { users } from "@/modules/_core/schema";
 import { VALID_THEME_IDS, VALID_THEME_MODES } from "@/modules/_core/themes";
 import type { ThemeId, ThemeMode } from "@/modules/_core/themes";
 import { getCurrentSession } from "@/lib/session";
+import { revokeShareLink } from "@/modules/_core/share";
 
 export async function setUserTheme({
   theme,
@@ -23,3 +25,10 @@ export async function setUserTheme({
     .set({ theme, themeMode: mode })
     .where(eq(users.id, user.id));
 }
+
+export async function revokeShareLinkAction(formData: FormData): Promise<void> {
+  const id = formData.get("id");
+  if (typeof id !== "string") throw new Error("Missing id");
+  await revokeShareLink(id);
+  revalidatePath("/settings");
+}

src/app/settings/page.tsx

@@ -1,10 +1,15 @@
 import { getCurrentSession } from "@/lib/session";
+import { getActiveShareLinks } from "@/modules/_core/share";
+import { getEntityType } from "@/modules/_core/registry";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { Button } from "@/components/ui/button";
 import { ThemePicker } from "@/components/theme-picker";
+import { revokeShareLinkAction } from "./actions";
 import Link from "next/link";
 
 export default async function SettingsPage() {
   const { user } = await getCurrentSession();
+  const shareLinks = await getActiveShareLinks();
 
   return (
     <div className="container max-w-2xl py-8 space-y-6">
@@ -23,6 +28,45 @@ export default async function SettingsPage() {
         </CardContent>
       </Card>
 
+      <Card>
+        <CardHeader>
+          <CardTitle>Active Share Links</CardTitle>
+        </CardHeader>
+        <CardContent>
+          {shareLinks.length === 0 ? (
+            <p className="text-sm text-muted-foreground">No active share links.</p>
+          ) : (
+            <ul className="space-y-3">
+              {shareLinks.map((link) => {
+                const registration = getEntityType(link.entityType);
+                const label = registration?.label.singular ?? link.entityType;
+                return (
+                  <li key={link.id} className="flex items-center justify-between gap-4 text-sm">
+                    <div className="min-w-0">
+                      <span className="font-medium">{label}</span>
+                      <span className="text-muted-foreground ml-2">
+                        {link.capabilities.write ? "read + write" : "read-only"}
+                      </span>
+                      {link.expiresAt && (
+                        <span className="text-muted-foreground ml-2">
+                          · expires {link.expiresAt.toLocaleDateString()}
+                        </span>
+                      )}
+                    </div>
+                    <form action={revokeShareLinkAction}>
+                      <input type="hidden" name="id" value={link.id} />
+                      <Button variant="destructive" size="sm" type="submit">
+                        Revoke
+                      </Button>
+                    </form>
+                  </li>
+                );
+              })}
+            </ul>
+          )}
+        </CardContent>
+      </Card>
+
       <Link
         href="/settings/household"
         className="inline-flex items-center justify-center rounded-md border border-input bg-background px-4 py-2 text-sm font-medium shadow-sm hover:bg-accent hover:text-accent-foreground"