fix(admin): remove manual reasons and repair code creation

frontend/src/app/api/admin/codes/[id]/route.ts

@@ -12,14 +12,10 @@ import {
 export const runtime = "nodejs";
 
 const paramsSchema = z.object({ id: z.string().uuid() });
-const revokeCodeSchema = z.object({
-  reason: z.string().trim().min(1).max(500),
-});
 const updateCodeSchema = z
   .object({
     note: z.string().trim().max(500).nullable().optional(),
     expiresAt: z.string().datetime({ offset: true }).nullable().optional(),
-    reason: z.string().trim().min(1).max(500),
   })
   .refine((value) => "note" in value || "expiresAt" in value, {
     message: "至少提供一个可修改字段",
@@ -52,7 +48,7 @@ export async function PATCH(
         p_note: body.note ?? null,
         p_set_expires_at: "expiresAt" in body,
         p_expires_at: body.expiresAt ?? null,
-        p_reason: body.reason,
+        p_reason: "admin_console_update_redemption_code",
       },
     );
     return NextResponse.json({ data: rows[0] });
@@ -71,15 +67,12 @@ export async function DELETE(
       "billing.adjustments.write",
     );
     const parsed = paramsSchema.safeParse(await context.params);
-    const parsedBody = revokeCodeSchema.safeParse(
-      await request.json().catch(() => null),
-    );
-    if (!parsed.success || !parsedBody.success) return invalidQueryResponse();
+    if (!parsed.success) return invalidQueryResponse();
     const rows = await runCodeRpc(
       "admin_revoke_redemption_code",
       session,
       requestId(request),
-      { p_code_id: parsed.data.id, p_reason: parsedBody.data.reason },
+      { p_code_id: parsed.data.id, p_reason: "admin_console_revoke_redemption_code" },
     );
     return NextResponse.json({ data: rows[0] });
   } catch (error) {

frontend/src/app/api/admin/codes/route.ts

@@ -28,7 +28,6 @@ const createCodesSchema = z.object({
   count: z.number().int().min(1).max(100),
   expiresAt: z.string().datetime({ offset: true }).nullable().optional(),
   note: z.string().trim().max(500).nullable().optional(),
-  reason: z.string().trim().min(1).max(500),
 });
 
 type CodeRow = {
@@ -147,7 +146,7 @@ export async function POST(request: Request) {
       "admin_create_redemption_codes",
       session,
       operationRequestId,
-      { p_codes: records, p_reason: parsed.data.reason },
+      { p_codes: records, p_reason: "admin_console_create_redemption_codes" },
     );
     const byMask = new Map<string, RedemptionCodeRecord>(
       stored.map((record) => [record.mask, record]),