diff --git a/hub/admin-web/src/routes/admin/org/[slug]/teams/+page.svelte b/hub/admin-web/src/routes/admin/org/[slug]/teams/+page.svelte
index 96bc22d..3ea7374 100644
--- a/hub/admin-web/src/routes/admin/org/[slug]/teams/+page.svelte
+++ b/hub/admin-web/src/routes/admin/org/[slug]/teams/+page.svelte
@@ -38,12 +38,19 @@
 		}
 	}
 
+	const SLUG_RE = /^[a-z0-9]([a-z0-9-]*[a-z0-9])?$/;
+
 	async function createTeam() {
 		if (!newSlug.trim() || !newName.trim()) return;
+		const teamSlug = newSlug.trim().toLowerCase();
+		if (!SLUG_RE.test(teamSlug)) {
+			toastError('标识须为小写字母数字，可用连字符连接');
+			return;
+		}
 		adding = true;
 		try {
 			await api.createTeam(slug, {
-				slug: newSlug.trim(),
+				slug: teamSlug,
 				name: newName.trim(),
 				...(newDesc.trim() ? { description: newDesc.trim() } : {})
 			});
@@ -134,7 +141,7 @@
 	<div class="saas-card-pad mb-6">
 		<h2 class="saas-section-title mb-4">新建团队</h2>
 		<div class="grid gap-3 md:grid-cols-[1fr_1fr_1.2fr_auto]">
-			<input class="saas-input" placeholder="标识（小写字母数字）" bind:value={newSlug} />
+			<input class="saas-input" placeholder="标识（如 math-g7）" bind:value={newSlug} />
 			<input class="saas-input" placeholder="名称" bind:value={newName} />
 			<input class="saas-input" placeholder="描述（可选）" bind:value={newDesc} />
 			<button class="saas-btn-primary" onclick={createTeam} disabled={adding}>新建</button>
diff --git a/hub/src/admin/errors.ts b/hub/src/admin/errors.ts
index 01ecf26..ee9fbb7 100644
--- a/hub/src/admin/errors.ts
+++ b/hub/src/admin/errors.ts
@@ -35,9 +35,11 @@ export async function handleRouteError(reply: FastifyReply, err: unknown): Promi
       await sendError(reply, mapped.statusCode, mapped.code, mapped.message);
       return;
     }
+    reply.log.error({ err }, "unmapped route error");
     await sendError(reply, 500, "internal_error", "internal error");
     return;
   }
+  reply.log.error({ err }, "unmapped route error");
   await sendError(reply, 500, "internal_error", "internal error");
 }
 
@@ -71,7 +73,8 @@ function mapDomainError(message: string): { statusCode: number; code: string; me
     lower.includes("is required") ||
     lower.includes("already") ||
     lower.includes("invalid") ||
-    lower.includes("accepts only")
+    lower.includes("accepts only") ||
+    lower.includes("must be")
   ) {
     return { statusCode: 400, code: "bad_request", message };
   }
diff --git a/hub/src/admin/routes/teamsRoutes.ts b/hub/src/admin/routes/teamsRoutes.ts
index 9a76af1..4d34533 100644
--- a/hub/src/admin/routes/teamsRoutes.ts
+++ b/hub/src/admin/routes/teamsRoutes.ts
@@ -34,7 +34,7 @@ export async function registerTeamsRoutes(
       const { orgSlug } = request.params as { orgSlug: string };
       const auth = await requireOrgRole(request, reply, guardDeps, { orgSlug });
       if (auth === null) return;
-      const body = request.body as { slug?: unknown; name?: unknown; description?: unknown };
+      const body = (request.body ?? {}) as { slug?: unknown; name?: unknown; description?: unknown };
       if (typeof body.slug !== "string" || typeof body.name !== "string") {
         return reply.status(400).send({
           error: { code: "bad_request", message: "slug and name are required" },