Add remaining public + admin pages (parallel build, 26 files)

Built via two parallel agent workflows reading the real Prisma schema, then
integrated + verified.

Public: /shop (categories + storefront), /community hub, /rankings (top by
credits), /staff, /photos (camera_web gallery), /help (categories + rules),
/help/tickets (auth-gated user tickets + create), /settings (auth-gated, update
motto via RCON).

Admin: /admin/catalog (+[id] items), /admin/radio (shouts/apps/schedules +
delete shout), /admin/teams (CRUD), /admin/permissions (read), /admin/wordfilter
(CRUD + RCON push), /admin/ip (whitelist/blacklist CRUD), /admin/applications
(list + dismiss), /admin/logs (chat/command/alert read), /admin/achievements
(read). Server actions all staff-gated.

Header + admin nav extended. Verified: tsc exit 0, vitest 48/48, next build
exit 0 (33 routes); curl-probed every route — public 200/<main>, auth+admin
correctly 307-redirect when unauthorized.

src/app/admin/achievements/page.tsx

@@ -0,0 +1,87 @@
+import { prisma } from "@/lib/prisma";
+
+export const dynamic = "force-dynamic";
+
+type Achievement = {
+  name: string;
+  category: string;
+  level: number;
+  rewardAmount: number;
+  rewardType: number;
+  points: number | null;
+  progressNeeded: number;
+};
+
+export default async function AdminAchievements() {
+  let achievements: Achievement[] = [];
+  try {
+    achievements = await prisma.achievements.findMany({
+      select: {
+        name: true,
+        category: true,
+        level: true,
+        rewardAmount: true,
+        rewardType: true,
+        points: true,
+        progressNeeded: true,
+      },
+      orderBy: [{ category: "asc" }, { name: "asc" }, { level: "asc" }],
+    });
+  } catch {
+    achievements = [];
+  }
+
+  // Group by category (already sorted by category, then name, then level).
+  const groups = new Map<string, Achievement[]>();
+  for (const a of achievements) {
+    const list = groups.get(a.category) ?? [];
+    list.push(a);
+    groups.set(a.category, list);
+  }
+
+  return (
+    <main>
+      <h1>Achievements</h1>
+      <p className="muted" style={{ marginTop: 0 }}>
+        Read-only · {achievements.length} rows across {groups.size} categories.
+      </p>
+
+      {groups.size === 0 ? (
+        <p className="muted">No achievements found.</p>
+      ) : (
+        [...groups.entries()].map(([category, rows]) => (
+          <div key={category} className="card" style={{ marginBottom: "1.5rem" }}>
+            <h3 style={{ marginTop: 0 }}>{category}</h3>
+            <table style={{ width: "100%", borderCollapse: "collapse" }}>
+              <thead>
+                <tr style={{ textAlign: "left", color: "var(--muted)" }}>
+                  <th>Name</th>
+                  <th>Level</th>
+                  <th>Progress needed</th>
+                  <th>Reward type</th>
+                  <th>Reward amount</th>
+                  <th>Points</th>
+                </tr>
+              </thead>
+              <tbody>
+                {rows.map((a) => (
+                  <tr
+                    key={`${a.name}-${a.level}`}
+                    style={{ borderTop: "1px solid var(--border)" }}
+                  >
+                    <td>{a.name}</td>
+                    <td>{a.level}</td>
+                    <td>{a.progressNeeded}</td>
+                    <td>{a.rewardType}</td>
+                    <td>{a.rewardAmount}</td>
+                    <td>{a.points ?? 0}</td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+        ))
+      )}
+    </main>
+  );
+}