diff --git a/CHANGELOG.md b/CHANGELOG.md
index bbffb48..c4aaa45 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 All notable changes to Epicure are documented here. This file is mirrored in-app at `/changelog` (and in the admin dashboard) via `apps/web/lib/changelog.ts` — update both together.
 
+## 0.13.1 — 2026-07-13 17:25
+
+### Fixed
+- People search never found anyone, for anyone — there was no signup or settings flow that ever set a username, and search (along with profiles and follow) requires one. Every account now gets one automatically on signup; existing accounts were backfilled.
+
 ## 0.13.0 — 2026-07-13 15:37
 
 ### Added
diff --git a/apps/web/lib/auth/server.ts b/apps/web/lib/auth/server.ts
index 9a8a095..15b5be3 100644
--- a/apps/web/lib/auth/server.ts
+++ b/apps/web/lib/auth/server.ts
@@ -6,6 +6,7 @@ import { sendEmail, verifyEmailHtml, resetPasswordHtml, welcomeHtml } from "@/li
 import { isSignupsDisabled } from "@/lib/site-settings";
 import { findValidInvite, consumeInvite, INVITE_COOKIE } from "@/lib/invites";
 import { gravatarUrl } from "@/lib/gravatar";
+import { generateUniqueUsername } from "@/lib/username";
 
 export const auth = betterAuth({
   trustedOrigins: [process.env["BETTER_AUTH_URL"] ?? "http://localhost:3000"],
@@ -94,13 +95,21 @@ export const auth = betterAuth({
     user: {
       create: {
         before: async (user, context) => {
-          if (!(await isSignupsDisabled())) return;
+          // No signup form or settings page ever lets someone set a username,
+          // yet profiles, follows, and people-search all key on it — so every
+          // account needs one generated here, or those features silently see
+          // nobody. OAuth signups may already have one (mapped from the
+          // provider profile); email/password never does.
+          const existingUsername = (user as { username?: string | null }).username;
+          const username = existingUsername || (await generateUniqueUsername(user.name || user.email));
+
+          if (!(await isSignupsDisabled())) return { data: { ...user, username } };
 
           const token = context?.getCookie(INVITE_COOKIE);
           const invite = token ? await findValidInvite(token, user.email) : null;
           if (!invite) return false;
 
-          return { data: { ...user, role: invite.role, tier: invite.tier } };
+          return { data: { ...user, username, role: invite.role, tier: invite.tier } };
         },
         after: async (user, context) => {
           // First registered user becomes admin
diff --git a/apps/web/lib/changelog.ts b/apps/web/lib/changelog.ts
index 635e090..d8b2f86 100644
--- a/apps/web/lib/changelog.ts
+++ b/apps/web/lib/changelog.ts
@@ -1,5 +1,5 @@
 // Mirrors CHANGELOG.md at the repo root — update both together.
-export const APP_VERSION = "0.13.0";
+export const APP_VERSION = "0.13.1";
 
 export type ChangelogEntry = {
   version: string;
@@ -11,6 +11,13 @@ export type ChangelogEntry = {
 };
 
 export const CHANGELOG: ChangelogEntry[] = [
+  {
+    version: "0.13.1",
+    date: "2026-07-13 17:25",
+    fixed: [
+      "People search never found anyone, for anyone — there was no signup or settings flow that ever set a username, and search (along with profiles and follow) requires one. Every account now gets one automatically on signup; existing accounts were backfilled.",
+    ],
+  },
   {
     version: "0.13.0",
     date: "2026-07-13 15:37",
diff --git a/apps/web/lib/username.ts b/apps/web/lib/username.ts
new file mode 100644
index 0000000..c1d7316
--- /dev/null
+++ b/apps/web/lib/username.ts
@@ -0,0 +1,33 @@
+import { db, users, eq } from "@epicure/db";
+
+/** Lowercase alnum-and-underscore slug, at least 3 chars, at most 20. */
+function slugify(seed: string): string {
+  const base = seed
+    .split("@")[0]! // if seed is an email, drop the domain
+    .toLowerCase()
+    .replace(/[^a-z0-9_]/g, "")
+    .slice(0, 20);
+  return base.length >= 3 ? base : `${base}user`.slice(0, 20);
+}
+
+/**
+ * Every user needs a username — it's the only thing profile pages, follows,
+ * and people-search key on, but there's no signup-time or settings UI to set
+ * one. Called from the user.create.before hook (lib/auth/server.ts) so every
+ * account gets one automatically, generated from their name or email.
+ */
+export async function generateUniqueUsername(seed: string): Promise<string> {
+  const base = slugify(seed);
+  let candidate = base;
+  let suffix = 0;
+
+  while (true) {
+    const existing = await db.query.users.findFirst({
+      where: eq(users.username, candidate),
+      columns: { id: true },
+    });
+    if (!existing) return candidate;
+    suffix += 1;
+    candidate = `${base}${suffix}`.slice(0, 20);
+  }
+}
diff --git a/apps/web/package.json b/apps/web/package.json
index ee95459..6a0f7b9 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@epicure/web",
-  "version": "0.13.0",
+  "version": "0.13.1",
   "private": true,
   "scripts": {
     "dev": "next dev",
diff --git a/package.json b/package.json
index 6b9e589..02758e6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "epicure",
-  "version": "0.13.0",
+  "version": "0.13.1",
   "private": true,
   "scripts": {
     "dev": "pnpm --filter web dev",
@@ -10,6 +10,7 @@
     "db:generate": "pnpm --filter @epicure/db generate",
     "db:migrate": "pnpm --filter @epicure/db migrate",
     "db:seed": "pnpm --filter @epicure/db seed",
+    "db:backfill-usernames": "pnpm --filter @epicure/db backfill-usernames",
     "db:studio": "pnpm --filter @epicure/db studio"
   },
   "devDependencies": {
diff --git a/packages/db/package.json b/packages/db/package.json
index 2e187a9..659d204 100644
--- a/packages/db/package.json
+++ b/packages/db/package.json
@@ -13,6 +13,7 @@
     "migrate": "drizzle-kit migrate",
     "studio": "drizzle-kit studio",
     "seed": "tsx src/seed.ts",
+    "backfill-usernames": "tsx src/backfill-usernames.ts",
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
diff --git a/packages/db/src/backfill-usernames.ts b/packages/db/src/backfill-usernames.ts
new file mode 100644
index 0000000..83e4aad
--- /dev/null
+++ b/packages/db/src/backfill-usernames.ts
@@ -0,0 +1,51 @@
+import { db } from "./client";
+import { users } from "./schema";
+import { eq, isNull } from "drizzle-orm";
+
+// Mirrors apps/web/lib/username.ts's slugify — duplicated rather than shared
+// since packages/db doesn't depend on apps/web. Kept intentionally simple.
+function slugify(seed: string): string {
+  const base = seed
+    .split("@")[0]!
+    .toLowerCase()
+    .replace(/[^a-z0-9_]/g, "")
+    .slice(0, 20);
+  return base.length >= 3 ? base : `${base}user`.slice(0, 20);
+}
+
+async function backfillUsernames() {
+  const rows = await db.query.users.findMany({
+    where: isNull(users.username),
+    columns: { id: true, name: true, email: true },
+  });
+
+  console.log(`${rows.length} user(s) missing a username.`);
+
+  const taken = new Set(
+    (await db.query.users.findMany({ columns: { username: true } }))
+      .map((u) => u.username)
+      .filter((u): u is string => !!u)
+  );
+
+  for (const row of rows) {
+    const base = slugify(row.name || row.email);
+    let candidate = base;
+    let suffix = 0;
+    while (taken.has(candidate)) {
+      suffix += 1;
+      candidate = `${base}${suffix}`.slice(0, 20);
+    }
+    taken.add(candidate);
+
+    await db.update(users).set({ username: candidate }).where(eq(users.id, row.id));
+    console.log(`  ${row.email} -> @${candidate}`);
+  }
+
+  console.log("Backfill complete.");
+  process.exit(0);
+}
+
+backfillUsernames().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});