diff --git a/apps/api/src/app/wiring/engines.ts b/apps/api/src/app/wiring/engines.ts
index 93bffe2..11883cc 100644
--- a/apps/api/src/app/wiring/engines.ts
+++ b/apps/api/src/app/wiring/engines.ts
@@ -1022,6 +1022,8 @@ export function wireEngines(deps: EngineWiringDeps): EngineWiring {
         object: d.object,
         label: d.label ?? `${d.domain}.${d.object}`,
         keys: d.fields.filter((f) => f.primaryKey).map((f) => f.name),
+        /* 单标识列 —— 配方留痕点名行时按它削掉单号那一段(与 `rowLabel` 同一条口径) */
+        ...(d.caseKey === undefined ? {} : { caseKey: d.caseKey }),
         fields: d.fields.map((f) => ({ name: f.name, label: f.label ?? f.name, type: f.type, refersTo: f.refersTo })),
         createOnly: d.createOnly === true,
       }));
diff --git a/apps/api/src/modules/loop-engine/__tests__/auto-runner.test.ts b/apps/api/src/modules/loop-engine/__tests__/auto-runner.test.ts
index c71c0ff..167398e 100644
--- a/apps/api/src/modules/loop-engine/__tests__/auto-runner.test.ts
+++ b/apps/api/src/modules/loop-engine/__tests__/auto-runner.test.ts
@@ -62,7 +62,7 @@ function harness(seed: Record<string, unknown> = {}, override: { analyze?: Analy
       view: () => Promise.resolve(view()),
       writable: () =>
         Promise.resolve([
-          { domain: 'sub_eval', object: 'part', label: '本单两颗料', keys: ['eval_ref', 'internal_pn'], fields: [] },
+          { domain: 'sub_eval', object: 'part', label: '本单两颗料', keys: ['eval_ref', 'internal_pn'], caseKey: 'eval_ref', fields: [] },
           { domain: 'parts', object: 'parameter', label: '参数', keys: ['internal_pn', 'param_name'], fields: [] },
         ]),
       /**
@@ -173,6 +173,31 @@ describe('配方执行器', () => {
     expect(drafts.size).toBe(0);
   });
 
+  /*
+   * **少写了几行要出声**(2026-08-29 终审 M1):从前主键算不出来是静默 `continue` ——
+   * 既不计数也不留痕。表里少了行,人和判据都查不出为什么。
+   */
+  it('主键算不出来:留一句痕点名少了几行、主键列是哪几个', async () => {
+    const { runner, notes, ctx } = harness({});
+    await runner.run(
+      {
+        do: [
+          {
+            kind: 'project',
+            into: 'sub_eval.part',
+            from: { rows: [{ pn: 'A' }, { pn: '' }] },
+            fields: { eval_ref: 'W05-1', internal_pn: { col: 'pn' } },
+          },
+        ],
+      },
+      ctx,
+    );
+    const line = notes.find((n) => n.includes('主键算不出来'));
+    expect(line).toBeDefined();
+    expect(line).toContain('1 行因主键算不出来没写');
+    expect(line).toContain('eval_ref、internal_pn');
+  });
+
   it('when 为假就跳过这一笔', async () => {
     const { runner, drafts, ctx } = harness({});
     await runner.run({ do: [{ kind: 'project', when: 'never', into: 'sub_eval.part', from: { once: true }, fields: { eval_ref: 'a', internal_pn: 'b' } }] }, ctx);
@@ -202,8 +227,8 @@ describe('配方执行器', () => {
     expect(second.wrote).toBe(0);
   });
 
-  it('prune:这一笔没投影出来的行,从草稿层撤掉', async () => {
-    const { runner, drafts, ctx } = harness({});
+  it('prune:这一笔没投影出来的行,从草稿层撤掉,**并点名撤了哪几行**(M2)', async () => {
+    const { runner, drafts, notes, ctx } = harness({});
     await runner.run({ do: [{ kind: 'project', into: 'sub_eval.part', from: { rows: [{ pn: 'A' }, { pn: 'B' }] }, fields: { eval_ref: 'W05-1', internal_pn: { col: 'pn' } } }] }, ctx);
     expect(drafts.size).toBe(2);
     const out = await runner.run(
@@ -212,6 +237,10 @@ describe('配方执行器', () => {
     );
     expect(out.dropped).toBe(1);
     expect([...drafts.values()].map((d) => d.key['internal_pn'])).toEqual(['A']);
+    /* 点名,且**去掉单号那一段** —— 人正在这一单里看,`W05-1` 是脚下的地面(2026-08-25 那条口径) */
+    const line = notes.find((n) => n.includes('撤掉 1 行'));
+    expect(line).toContain('撤掉 1 行(B)');
+    expect(line).not.toContain('W05-1');
   });
 
   it('say:进工作日志,归系统', async () => {
diff --git a/apps/api/src/modules/loop-engine/internal/usecase/auto-runner.ts b/apps/api/src/modules/loop-engine/internal/usecase/auto-runner.ts
index 96f22db..ce3a11c 100644
--- a/apps/api/src/modules/loop-engine/internal/usecase/auto-runner.ts
+++ b/apps/api/src/modules/loop-engine/internal/usecase/auto-runner.ts
@@ -54,6 +54,23 @@ export type AutoOutcome = {
 
 const keyText = (key: Readonly<Record<string, string>>): string => Object.values(key).join('|');
 
+/**
+ * 摆给人看的行标识 —— **去掉单号那一段**(2026-08-25 柴浩:「只保留斜杠右边」):
+ * 人正在这一单里看,单号是脚下的地面,不是区分行的信息。与基座的 `rowLabel` 同一条口径。
+ * 去完一段都不剩(主键只有单号)就退回整段。
+ */
+function rowName(key: Readonly<Record<string, string>>, caseKey: string | undefined): string {
+  const rest = Object.entries(key)
+    .filter(([column]) => column !== caseKey)
+    .map(([, value]) => value);
+  return (rest.length > 0 ? rest : Object.values(key)).join('/');
+}
+
+/** 点名封顶 8 个 —— 再多就不是「点名」而是刷屏(拒回主键名单封顶 12 是同一条理由) */
+function nameList(names: readonly string[]): string {
+  return names.length <= 8 ? names.join('、') : `${names.slice(0, 8).join('、')}…等 ${names.length} 行`;
+}
+
 /** 这份配方会不会发卡 —— 「卡答过了就收步」那道门要问它 */
 export function recipeIssuesCard(recipe: AutoRecipe): boolean {
   return recipe.do.some((action) => action.kind === 'card');
@@ -112,6 +129,10 @@ export function createAutoRunner(deps: AutoRunnerDeps): {
           let localWrote = 0;
           /** 「只建不改」的表里已经在库、这一笔不用建的行数 */
           let localExisting = 0;
+          /** 主键算不出来、这一笔没写下去的行数 —— 不出声的话表里少了行谁也查不出为什么(M1) */
+          let localUnkeyed = 0;
+          /** 撤掉的是哪几行 —— 「撤要说出来、要点名」(2026-08-02 为人工撤行立的规矩,配方这一侧跟上,M2) */
+          const dropNames: string[] = [];
           for (const { row, outer } of expandSource(action.from, base)) {
             const computed: Record<string, unknown> = {};
             for (const [name, expr] of Object.entries(action.fields)) {
@@ -119,8 +140,11 @@ export function createAutoRunner(deps: AutoRunnerDeps): {
             }
             const key: Record<string, string> = {};
             for (const column of decl.keys) key[column] = String(computed[column] ?? '');
-            /* 主键算不出来就先不写 —— 空主键写下去是一行永远对不上的垃圾 */
-            if (decl.keys.some((column) => key[column] === '')) continue;
+            /* 主键算不出来就先不写 —— 空主键写下去是一行永远对不上的垃圾。**但要数一笔**(M1) */
+            if (decl.keys.some((column) => key[column] === '')) {
+              localUnkeyed += 1;
+              continue;
+            }
             const patch: Record<string, unknown> = {};
             for (const [name, value] of Object.entries(computed)) if (!decl.keys.includes(name)) patch[name] = value;
             /*
@@ -160,10 +184,13 @@ export function createAutoRunner(deps: AutoRunnerDeps): {
               for (const column of decl.keys) key[column] = String(stale[column] ?? '');
               if (kept.has(keyText(key))) continue;
               const { dropped: gone } = await deps.data.draftDrop({ taskId: context.taskId, domain: decl.domain, object: decl.object, key });
-              if (gone) localDropped += 1;
+              if (gone) {
+                localDropped += 1;
+                dropNames.push(rowName(key, decl.caseKey));
+              }
             }
           }
-          if (localWrote > 0 || localDropped > 0 || localExisting > 0) {
+          if (localWrote > 0 || localDropped > 0 || localExisting > 0 || localUnkeyed > 0) {
             /*
              * **kind: 'observation' + `internal: true`**(2026-08-29 终审 I5,控制端裁定 F2)。
              * `kind` 必须是 `observation`:`result` 不在 `task-log.ts` 的 `SKELETON` 里,进不了工作日志(R10)。
@@ -178,7 +205,10 @@ export function createAutoRunner(deps: AutoRunnerDeps): {
               title:
                 `${decl.label}:写下 ${localWrote} 行` +
                 (localExisting === 0 ? '' : `,${localExisting} 行已在库、这一笔不用建`) +
-                (localDropped === 0 ? '' : `,撤掉 ${localDropped} 行`),
+                /* 撤了要点名(M2):不点名的话,下一拍的读者(人或模型)对不上是哪几行没了 */
+                (localDropped === 0 ? '' : `,撤掉 ${localDropped} 行(${nameList(dropNames)})`) +
+                /* 少写了几行要出声(M1):静默 continue 的那几行,表里少了谁也查不出为什么 */
+                (localUnkeyed === 0 ? '' : `,${localUnkeyed} 行因主键算不出来没写(主键列:${decl.keys.join('、')})`),
               detail: { auto: `${context.stepId}#${index + 1}`, ledger: action.into, internal: true },
             });
           }
diff --git a/apps/api/src/modules/loop-engine/port.ts b/apps/api/src/modules/loop-engine/port.ts
index 57eea9b..e96b0d8 100644
--- a/apps/api/src/modules/loop-engine/port.ts
+++ b/apps/api/src/modules/loop-engine/port.ts
@@ -44,6 +44,12 @@ export type TaskDataGateway = {
       object: string;
       label: string;
       keys: string[];
+      /**
+       * 单标识列(`declarations.ledger[].caseKey`)—— **摆给人看的行标识要去掉这一段**
+       * (2026-08-25 柴浩:「COV-…/CU-0142-01 只保留斜杠右边」):人正在这一单里看,
+       * 单号是脚下的地面,不是区分行的信息。基座那一侧同款做法见 `rowLabel`。
+       */
+      caseKey?: string | undefined;
       fields: Array<{ name: string; label: string; type?: string }>;
     }>
   >;