DataScience-GT · aamoghS · Aug 28, 2026 · Aug 25, 2026 · Aug 25, 2026 · Aug 27, 2026
@@ -45,17 +45,17 @@ Unauthenticated and authenticated product UI. `proxy.ts` marks these prefixes `p
 | `/judge`, `/judge/register` | Judge home / apply |
 | `/scan` | QR scanning |
 | `/admin` | Staff home |
-| `/admin/hackathons`, `/admin/hackathons/[id]` | Edition admin (attendees, waves, announcements, analytics, events) |
+| `/admin/hackathons`, `/admin/hackathons/[id]` | Edition admin (attendees, waves, announcements, analytics, events). `[id]` is the name slug (`hacklytics-digital-bloom`), not a percent-encoded name. |
 | `/admin/members` | Membership admin |
 | `/admin/attendees` | Attendee tools |
-| `/admin/judging` | Judging admin |
+| `/admin/judging` | Judging admin (sync submissions + assign judges live here) |
 | `/admin/initiatives` | Initiative / proposal review |
 | `/admin/bootcamp` | Bootcamp attendance |
 | `/admin/staff` | Admin users |
 | `/admin/analytics` | Overview |
 | `/admin/audit` | Audit log |
 | `/admin/projects` | Project admin |
-| `/admin/setup` | First-run wizard |
+| `/admin/setup` | Redirects to `/admin/judging`. Do not create a second hackathon from judging — create it under Hackathons. |
 
 ## API routes
 

@@ -1061,6 +1061,22 @@ describe("Hackathon end-to-end flow", () => {
       );
     });
 
+    it("opens an edition from a percent-encoded name (old admin dashboard links)", async () => {
+      // `/admin/hackathons/${encodeURIComponent(name)}` used to put
+      // "Hacklytics%3A%20Digital%20Bloom" in the path. That string is not the
+      // stored name, and slugging it produces "hacklytics-3a-20digital-20bloom".
+      mockFindFirst.mockImplementation(() => undefined);
+      mockFindMany.mockImplementation((table) =>
+        table === "hackathons" ? [bloom()] : [],
+      );
+      const caller = appRouter.createCaller(createMockCtx("user_a"));
+
+      const res = await caller.hackathon.getById({
+        id: encodeURIComponent("Hacklytics: Digital Bloom"),
+      });
+      expect(res.id).toBe(HACK_A);
+    });
+
     it("404s on a slug matching no edition", async () => {
       mockFindFirst.mockImplementation(() => undefined);
       mockFindMany.mockImplementation((table) =>

@@ -480,5 +480,22 @@ describe("Hackathon interest list", () => {
       // changes their address stays reachable.
       expect(rows[0]!.email).toBe("ada@example.com");
     });
+
+    it("counts this edition's interest rows for staff", async () => {
+      lookups({ hackathon: announced(), isAdmin: true });
+      mockSelectRows.mockReturnValue([{ count: 34 }]);
+
+      await expect(
+        callerFor(ADMIN).hackathon.interestCount({ hackathonId: HACK }),
+      ).resolves.toBe(34);
+    });
+
+    it("hides the count from a caller who is not staff", async () => {
+      lookups({ hackathon: announced(), isAdmin: false });
+
+      await expect(
+        callerFor(VISITOR).hackathon.interestCount({ hackathonId: HACK }),
+      ).rejects.toMatchObject({ code: "FORBIDDEN" });
+    });
   });
 });
@@ -30,19 +30,50 @@ const toSlug = (value: string) =>
     .replace(/[^a-z0-9]+/g, "-")
     .replace(/^-+|-+$/g, "");
 
-// Exact name first, then the slug the portal links with. The slug pass reads
-// every edition — there are a handful, and no index covers the normalisation.
+/** Must match `decodeHackathonParam` in sites/mainweb/lib/hackathon-slug.ts. */
+function decodeHackathonParam(value: string) {
+  let current = value;
+  for (let i = 0; i < 2; i++) {
+    try {
+      const next = decodeURIComponent(current);
+      if (next === current) break;
+      current = next;
+    } catch {
+      break;
+    }
+  }
+  return current;
+}
+
+function uniqueStrings(values: string[]) {
+  const seen = new Set<string>();
+  const out: string[] = [];
+  for (const value of values) {
+    if (!value || seen.has(value)) continue;
+    seen.add(value);
+    out.push(value);
+  }
+  return out;
+}
+
+// Exact name first (including a percent-encoded name from old admin links),
+// then the slug the portal links with. The slug pass reads every edition —
+// there are a handful, and no index covers the normalisation.
 async function findByNameOrSlug(db: DrizzleDB, value: string) {
-  const exact = await db.query.hackathons.findFirst({
-    where: eq(hackathons.name, value),
-  });
-  if (exact) return exact;
+  const candidates = uniqueStrings([value, decodeHackathonParam(value)]);
+
+  for (const candidate of candidates) {
+    const exact = await db.query.hackathons.findFirst({
+      where: eq(hackathons.name, candidate),
+    });
+    if (exact) return exact;
+  }
 
-  const slug = toSlug(value);
-  if (!slug) return undefined;
+  const slugs = uniqueStrings(candidates.map(toSlug));
+  if (slugs.length === 0) return undefined;
 
   const all = await db.query.hackathons.findMany();
-  return all.find((row) => toSlug(row.name) === slug);
+  return all.find((row) => slugs.includes(toSlug(row.name)));
 }
 
 export const hackathonCrudRouter = createTRPCRouter({
@@ -99,8 +130,8 @@ export const hackathonCrudRouter = createTRPCRouter({
       ).query.hackathons.findMany({
         where: and(
           // Hidden means hidden from the public funnel, not from the people running the
-          // event. Filtering it for staff too emptied Judging Setup and the judging
-          // dashboard, which both pick an edition off here.
+          // event. Filtering it for staff too emptied the judging dashboard, which
+          // picks an edition off here.
           adminViewer ? undefined : eq(hackathons.isPublic, true),
           input.status ? eq(hackathons.status, input.status) : undefined,
           adminViewer

@@ -424,4 +424,17 @@ export const hackathonInterestRouter = createTRPCRouter({
         .orderBy(desc(hackathonInterest.createdAt))
         .limit(5000);
     }),
+
+  // How many people asked to be told about THIS edition. The admin card used
+  // to show currentParticipants (registrations), which is zero while the
+  // event is announced — so a live interest list looked unlinked.
+  interestCount: isAdmin
+    .input(z.object({ hackathonId: z.string().uuid() }))
+    .query(async ({ ctx, input }) => {
+      const [row] = await (ctx.db as DrizzleDB)
+        .select({ count: sql<number>`count(*)::int` })
+        .from(hackathonInterest)
+        .where(eq(hackathonInterest.hackathonId, input.hackathonId));
+      return row?.count ?? 0;
+    }),
 });
@@ -101,7 +101,7 @@ export default function AnalyticsPage() {
           <div className="absolute inset-0 pointer-events-none bg-gradient-to-r from-accent/5 via-transparent to-accent/5 opacity-0 group-hover:opacity-100 transition-opacity duration-500" />
           <div className="absolute -top-24 -right-24 w-56 h-56 bg-accent/10 rounded-sm blur-[100px] opacity-0 group-hover:opacity-100 transition-opacity duration-500" />
           <p className="text-[10px] font-mono text-accent/60 uppercase tracking-[0.2em] mb-1 relative z-10 flex items-center gap-2">
-            <QrCode className="w-3 h-3" /> Club Events
+            <QrCode className="w-3 h-3" /> Operations
           </p>
           <h1 className="relative text-3xl font-black text-[var(--text-primary)] tracking-tighter mb-2 group-hover:text-transparent group-hover:bg-clip-text group-hover:bg-gradient-to-r group-hover:from-white group-hover:via-emerald-100 to-gray-400 transition-ui duration-500">
             Analytics <span className="text-accent italic">Dashboard</span>

@@ -89,7 +89,8 @@ export default function AttendeesPage() {
             <span className="text-accent italic font-bold">Registry</span>
           </h1>
           <p className="relative text-text-muted text-sm font-mono">
-            View and manage attendee registrations for club events.
+            View and manage attendee check-ins for club meetings. Hackathon
+            applications live on each edition&apos;s dashboard.
           </p>
           {/* Decorative Corner Accent */}
           <div className="absolute -bottom-16 -right-16 w-48 h-48 bg-accent/5 rounded-sm blur-[60px] opacity-0 group-hover:opacity-100 transition-opacity duration-500" />

@@ -6,6 +6,7 @@ import { usePortalContext } from "@/lib/use-portal-context";
 import { useParams } from "next/navigation";
 import { useState } from "react";
 import Link from "next/link";
+import { decodeHackathonParam } from "@/lib/hackathon-slug";
 import { LoadingScreen } from "@/components/portal/LoadingScreen";
 import { ScannerTab } from "@/components/admin/hackathons/ScannerTab";
 import { AttendeesTab } from "@/components/admin/hackathons/AttendeesTab";
@@ -28,7 +29,10 @@ type Tab =
 export default function AdminHackathonDashboard() {
   const { status } = useSession();
   const params = useParams();
-  const hackathonId = params?.id as string;
+  const rawId = params?.id;
+  const hackathonId = decodeHackathonParam(
+    Array.isArray(rawId) ? (rawId[0] ?? "") : ((rawId as string | undefined) ?? ""),
+  );
   const [activeTab, setActiveTab] = useState<Tab>("attendees");
 
   const { data: portalContext, isLoading: portalLoading } = usePortalContext();
@@ -219,6 +223,7 @@ export default function AdminHackathonDashboard() {
             <AttendeesTab
               hackathonId={hackathon.id}
               hackathonName={hackathon.name}
+              status={hackathon.status}
             />
           )}
           {activeTab === "analytics" && (

@@ -1,6 +1,6 @@
 "use client";
 
-import React, { useState, useEffect, useMemo } from "react";
+import React, { useState, useEffect, useMemo, useRef } from "react";
 import { Zap } from "lucide-react";
 import { useSession } from "next-auth/react";
 import { trpc } from "@/lib/trpc";
@@ -13,6 +13,7 @@ import { JudgeMatrixView } from "@/components/admin/judging/JudgeMatrixView";
 import { RankingsView } from "@/components/admin/judging/RankingsView";
 import { LoadingScreen } from "@/components/portal/LoadingScreen";
 import { JudgeLiveBoard } from "@/components/admin/hackathons/JudgeLiveBoard";
+import { judgingPrepIsCurrent } from "@/lib/judging-prep";
 
 export default function AdminResultsPage() {
   const { data: session, status } = useSession();
@@ -68,37 +69,105 @@ export default function AdminResultsPage() {
     message: string | null;
     error: string | null;
   }>({ busy: false, message: null, error: null });
+  // The edition whose assign call was refused. Rebuild anyway sends force
+  // for this id, not whatever is selected now — a late CONFLICT from A must
+  // not rebuild B.
+  const [assignConflictId, setAssignConflictId] = useState<string | null>(
+    null,
+  );
+  const selectedHackathonRef = useRef(selectedHackathon);
+  selectedHackathonRef.current = selectedHackathon;
+  const prepGen = useRef(0);
 
   const promoteSubmissions = trpc.judge.promoteSubmissions.useMutation();
   const assignJudges = trpc.judge.assignJudgesToProjects.useMutation();
 
+  const isAssignConflict = (error: unknown) =>
+    typeof error === "object" &&
+    error !== null &&
+    "data" in error &&
+    (error as { data?: { code?: string } }).data?.code === "CONFLICT";
+
+  const stillThisRun = (hackathonId: string, gen: number) =>
+    judgingPrepIsCurrent(
+      hackathonId,
+      gen,
+      selectedHackathonRef.current,
+      prepGen.current,
+    );
+
+  const finishPrepare = async (
+    hackathonId: string,
+    gen: number,
+    message: string,
+  ) => {
+    await utils.judge.getRankings.invalidate({ hackathonId });
+    if (!stillThisRun(hackathonId, gen)) return;
+    await refetchJudgingStatus();
+    if (!stillThisRun(hackathonId, gen)) return;
+    setAssignConflictId(null);
+    setPrepState({ busy: false, error: null, message });
+  };
+
   const prepareJudging = async () => {
-    if (!selectedHackathon) return;
+    const hackathonId = selectedHackathon;
+    if (!hackathonId) return;
+    const gen = ++prepGen.current;
+    setAssignConflictId(null);
     setPrepState({ busy: true, message: null, error: null });
     try {
       const promoted = await promoteSubmissions.mutateAsync({
-        hackathonId: selectedHackathon,
+        hackathonId,
       });
       const assigned = await assignJudges.mutateAsync({
-        hackathonId: selectedHackathon,
-      });
-      await utils.judge.getRankings.invalidate({
-        hackathonId: selectedHackathon,
+        hackathonId,
       });
-      await refetchJudgingStatus();
+      if (!stillThisRun(hackathonId, gen)) return;
       const warning = promoted.queuesNeedRebuild
         ? " One or more new projects carry a track no active judge covers — fix the track, then run this again."
         : "";
+      await finishPrepare(
+        hackathonId,
+        gen,
+        `Synced ${promoted.created} new submission(s) of ${promoted.total}, and built queues for ${assigned.totalJudges} judge(s) covering ${assigned.coverage.min}-${assigned.coverage.max} projects each. Print the table cards next.${warning}`,
+      );
+    } catch (e) {
+      if (!stillThisRun(hackathonId, gen)) return;
+      setAssignConflictId(isAssignConflict(e) ? hackathonId : null);
       setPrepState({
         busy: false,
-        error: null,
-        message: `Synced ${promoted.created} new submission(s) of ${promoted.total}, and built queues for ${assigned.totalJudges} judge(s) covering ${assigned.coverage.min}-${assigned.coverage.max} projects each. Print the table cards next.${warning}`,
+        message: null,
+        error: e instanceof Error ? e.message : "Could not prepare judging.",
       });
+    }
+  };
+
+  // The server names how many completed slots (or that judging is live) and
+  // asks for confirmation. This is the only control that sends force: true —
+  // /admin/setup used to, and now redirects here.
+  const rebuildQueuesAnyway = async () => {
+    const hackathonId = assignConflictId;
+    if (!hackathonId || hackathonId !== selectedHackathonRef.current) return;
+    const gen = ++prepGen.current;
+    setPrepState((s) => ({ ...s, busy: true }));
+    try {
+      const assigned = await assignJudges.mutateAsync({
+        hackathonId,
+        force: true,
+      });
+      if (!stillThisRun(hackathonId, gen)) return;
+      await finishPrepare(
+        hackathonId,
+        gen,
+        `Rebuilt queues for ${assigned.totalJudges} judge(s) covering ${assigned.coverage.min}-${assigned.coverage.max} projects each. Completed slots were kept.`,
+      );
     } catch (e) {
+      if (!stillThisRun(hackathonId, gen)) return;
+      setAssignConflictId(isAssignConflict(e) ? hackathonId : null);
       setPrepState({
         busy: false,
         message: null,
-        error: e instanceof Error ? e.message : "Could not prepare judging.",
+        error: e instanceof Error ? e.message : "Could not rebuild queues.",
       });
     }
   };
@@ -120,6 +189,12 @@ export default function AdminResultsPage() {
     }
   }, [hackathons, selectedHackathon]);
 
+  useEffect(() => {
+    prepGen.current += 1;
+    setAssignConflictId(null);
+    setPrepState({ busy: false, message: null, error: null });
+  }, [selectedHackathon]);
+
   const categories = useMemo(() => {
     if (!rankings?.rankings) return ["ALL"];
     const cats = new Set(
@@ -338,12 +413,26 @@ export default function AdminResultsPage() {
                 </p>
               )}
               {prepState.error && (
-                <p
+                <div
                   role="alert"
-                  className="mt-4 px-4 py-3 border border-red-500/30 bg-red-500/10 text-sm font-mono text-red-300"
+                  className={`mt-4 px-4 py-3 text-sm font-mono ${
+                    assignConflictId === selectedHackathon
+                      ? "border border-amber-500/30 bg-amber-500/10 text-amber-200"
+                      : "border border-red-500/30 bg-red-500/10 text-red-300"
+                  }`}
                 >
-                  {prepState.error}
-                </p>
+                  <p>{prepState.error}</p>
+                  {assignConflictId === selectedHackathon && (
+                    <button
+                      type="button"
+                      onClick={rebuildQueuesAnyway}
+                      disabled={prepState.busy}
+                      className="mt-4 px-6 py-3 bg-amber-500/10 border border-amber-500/40 text-amber-200 font-bold text-xs uppercase tracking-widest rounded-none hover:bg-amber-500/20 transition-ui font-mono disabled:opacity-40"
+                    >
+                      {prepState.busy ? "Rebuilding…" : "Rebuild anyway"}
+                    </button>
+                  )}
+                </div>
               )}
             </div>
           </LiquidGlass>