diff --git a/apps/web/src/admin/problem/components/SQLTestcaseEditor.vue b/apps/web/src/admin/problem/components/SQLTestcaseEditor.vue
index 6040f39..5d9cd78 100644
--- a/apps/web/src/admin/problem/components/SQLTestcaseEditor.vue
+++ b/apps/web/src/admin/problem/components/SQLTestcaseEditor.vue
@@ -185,11 +185,12 @@ async function upload() {
     const entries = res.info
     const baseScore = Math.floor(100 / entries.length)
     const remainder = 100 - baseScore * entries.length
+    // 只留落库的三个键：上传响应里的 stripped_output_md5 / input_size /
+    // output_size 保存时会被剥掉，见契约 problemTestCaseScoreSchema
     const testcases: Testcase[] = entries.map((entry, i) => ({
-      ...entry,
-      score: String(
-        i === entries.length - 1 ? baseScore + remainder : baseScore,
-      ),
+      input_name: entry.input_name,
+      output_name: entry.output_name,
+      score: i === entries.length - 1 ? baseScore + remainder : baseScore,
     }))
 
     emit("uploaded", res.id, testcases)
diff --git a/apps/web/src/admin/problem/components/TestcaseGenerator.vue b/apps/web/src/admin/problem/components/TestcaseGenerator.vue
index 40680b3..2755033 100644
--- a/apps/web/src/admin/problem/components/TestcaseGenerator.vue
+++ b/apps/web/src/admin/problem/components/TestcaseGenerator.vue
@@ -174,10 +174,9 @@ async function upload() {
     const baseScore = Math.floor(100 / entries.length)
     const remainder = 100 - baseScore * entries.length
     const testcases: Testcase[] = entries.map((entry, i) => ({
-      ...entry,
-      score: String(
-        i === entries.length - 1 ? baseScore + remainder : baseScore,
-      ),
+      input_name: entry.input_name,
+      output_name: entry.output_name,
+      score: i === entries.length - 1 ? baseScore + remainder : baseScore,
     }))
 
     emit("uploaded", res.id, testcases)
diff --git a/apps/web/src/admin/problem/detail.vue b/apps/web/src/admin/problem/detail.vue
index ae424b7..d07645a 100644
--- a/apps/web/src/admin/problem/detail.vue
+++ b/apps/web/src/admin/problem/detail.vue
@@ -288,17 +288,16 @@ function resetTemplate(language: LANGUAGE) {
 
 async function handleUploadTestcases({ file }: UploadCustomRequestOptions) {
   try {
+    // 失败走 catch —— 原来这里还有一句 `if (res.error)`（拿 { error, data }
+    // 信封当返回值），被 @ts-ignore 压着，信封拆掉之后就是一段死代码了
     const res = await uploadTestcases(file.file!, { sql: isSQLProblem.value })
-    // @ts-ignore
-    if (res.error) {
-      message.error("上传测试用例失败")
-      return
-    }
     // score 不在上传响应里，前端按测试点数量平分补上
     const entries = res.info
     const testcases: Testcase[] = entries.map((entry) => ({
-      ...entry,
-      score: (100 / entries.length).toFixed(0),
+      input_name: entry.input_name,
+      output_name: entry.output_name,
+      // 取值与原来的 `.toFixed(0)` 逐字相同，只是不再包成字符串
+      score: Number((100 / entries.length).toFixed(0)),
     }))
     problem.value.testCaseScore = testcases
     problem.value.testCaseId = res.id
diff --git a/apps/web/src/utils/types.ts b/apps/web/src/utils/types.ts
index 6685452..6dc46f8 100644
--- a/apps/web/src/utils/types.ts
+++ b/apps/web/src/utils/types.ts
@@ -101,10 +101,12 @@ export type {
 export type { UploadTestCaseResponse } from "@oj2/contract"
 
 /**
- * 题目表单里的测试点：上传返回的条目 + 前端本地算出的分值。
- * `score` **不在响应里** —— 是上传完成后按测试点数量平分补上去的。
+ * 题目表单里的测试点。落库的只有 {input_name, output_name, score} 三个键 ——
+ * 上传响应里多出来的 stripped_output_md5 / input_size / output_size 在保存时
+ * 被剥掉（旧后端的 serializer 也是这么干的，见契约 problemTestCaseScoreSchema）。
+ * score 不在上传响应里，是上传完成后按测试点数量平分补上去的。
  */
-export type Testcase = TestCaseEntry & { score: string }
+export type { ProblemTestCaseScore as Testcase } from "@oj2/contract"
 
 /**
  * 题目详情。以契约的 ProblemDetail 为准，只在这里补两处前端自己的窄化：
@@ -140,18 +142,11 @@ export type {
 /** 后台题目详情：比 oj 侧多 answers / testCase* / astRules */
 export type AdminProblem = Omit<
   ContractAdminProblem,
-  | "languages"
-  | "template"
-  | "testCaseScore"
-  | "samples"
-  | "answers"
-  | "astRules"
+  "languages" | "template" | "answers" | "astRules"
 > & {
   languages: LANGUAGE[]
   template: { [key in LANGUAGE]?: string }
-  // 测试点条目的键名由判题沙箱定，保持 snake_case
-  testCaseScore: Testcase[]
-  samples: { input: string; output: string }[]
+  // 契约里 answers[].language 是 string，这里收窄成 LANGUAGE
   answers: { language: LANGUAGE; code: string }[]
   astRules?: AstRules | null
 }
@@ -470,7 +465,6 @@ import type {
   AdminExercise,
   AdminTutorial,
   CreateSubmissionRequest,
-  TestCaseEntry,
 } from "@oj2/contract"
 
 /**
diff --git a/packages/contract/src/admin.ts b/packages/contract/src/admin.ts
index 3a9a105..bb1a0d7 100644
--- a/packages/contract/src/admin.ts
+++ b/packages/contract/src/admin.ts
@@ -43,6 +43,9 @@ export const createAnnouncementRequestSchema = z.object({
 
 export const updateAnnouncementRequestSchema = createAnnouncementRequestSchema
 
+export type ProblemSample = z.infer<typeof problemSampleSchema>
+export type ProblemAnswer = z.infer<typeof problemAnswerSchema>
+export type ProblemTestCaseScore = z.infer<typeof problemTestCaseScoreSchema>
 export type AdminAnnouncement = z.infer<typeof adminAnnouncementSchema>
 export type AdminAnnouncementListItem = z.infer<
   typeof adminAnnouncementListItemSchema
@@ -530,6 +533,39 @@ export const adminProblemListItemSchema = z.object({
 
 export const adminProblemListSchema = paginatedSchema(adminProblemListItemSchema)
 
+/**
+ * 题面样例 / 标准答案 / 测试点分值。这三个旧后端都是逐字段校验的
+ * （CreateSampleSerializer / CreateAnswerSerializer / CreateTestCaseScoreSerializer），
+ * 新后端一路写成 `z.record(z.unknown())` **反而比旧的松**。
+ *
+ * 生产库 956 道题逐条比对过：samples 947 条是 {input,output}（另外 9 条是空数组，
+ * SQL 题没样例）、answers 268 条是 {language,code}（633 条 null、55 条空数组）。
+ */
+export const problemSampleSchema = z.object({
+  input: z.string(),
+  output: z.string(),
+})
+
+export const problemAnswerSchema = z.object({
+  language: z.string(),
+  code: z.string(),
+})
+
+/**
+ * 测试点分值。**只有这三个键** —— 上传接口的响应比这多三个
+ * （stripped_output_md5 / input_size / output_size），旧后端的 DRF serializer
+ * 收下时把多的丢掉，生产库 956 行全是三键。zod 的 object 默认也剥未知键，
+ * 行为一致。
+ *
+ * score 前端算出来是字符串（`(100 / n).toFixed(0)`），旧后端 IntegerField 转成
+ * 整数落库，7990 条全是 int —— 这里用 coerce 保持同一个落库形状。
+ */
+export const problemTestCaseScoreSchema = z.object({
+  input_name: z.string().max(32),
+  output_name: z.string().max(32),
+  score: z.coerce.number().int().min(0),
+})
+
 /** 后台题目详情：包含 oj 侧永不下发的 answers / testCase* / astRules */
 export const adminProblemSchema = z.object({
   id: z.number().int(),
@@ -538,9 +574,9 @@ export const adminProblemSchema = z.object({
   description: z.string(),
   inputDescription: z.string(),
   outputDescription: z.string(),
-  samples: z.array(z.record(z.string(), z.unknown())),
+  samples: z.array(problemSampleSchema),
   testCaseId: z.string(),
-  testCaseScore: z.array(z.record(z.string(), z.unknown())),
+  testCaseScore: z.array(problemTestCaseScoreSchema),
   hint: z.string().nullable(),
   languages: z.array(z.string()),
   template: z.record(z.string(), z.string()),
@@ -564,7 +600,7 @@ export const adminProblemSchema = z.object({
   mermaidCode: z.string().nullable(),
   flowchartHint: z.string().nullable(),
   astRules: z.unknown(),
-  answers: z.array(z.record(z.string(), z.unknown())),
+  answers: z.array(problemAnswerSchema),
   prompt: z.string().nullable(),
   sqlConfig: sqlConfigSchema.nullable(),
   sqlDisplay: sqlDisplaySchema.nullable(),
@@ -576,9 +612,9 @@ export const createProblemRequestSchema = z.object({
   description: z.string(),
   inputDescription: z.string(),
   outputDescription: z.string(),
-  samples: z.array(z.record(z.string(), z.unknown())),
+  samples: z.array(problemSampleSchema),
   testCaseId: z.string().regex(/^[a-zA-Z0-9]+$/).max(32),
-  testCaseScore: z.array(z.record(z.string(), z.unknown())),
+  testCaseScore: z.array(problemTestCaseScoreSchema),
   timeLimit: z.number().int().min(1).max(1000 * 60),
   memoryLimit: z.number().int().min(1).max(1024),
   languages: z.array(z.string()).min(1),
@@ -589,7 +625,7 @@ export const createProblemRequestSchema = z.object({
   hint: z.string().nullable().default(null),
   source: z.string().max(256).nullable().default(null),
   prompt: z.string().nullable().default(null),
-  answers: z.array(z.record(z.string(), z.unknown())).default([]),
+  answers: z.array(problemAnswerSchema).default([]),
   shareSubmission: z.boolean(),
   allowFlowchart: z.boolean().default(false),
   showFlowchart: z.boolean().default(false),