fix(exam): print real MCQ options, evaluation-method-aware cutting point check

Print showed blank A/B/C/D fill-in lines for every CHOICE question instead
of the real options — the detail page never fetched option data at all
(GET /exams/:id?i=questions, no nested options), and the print template
hardcoded the blanks regardless. Now requests
?i=questions,questions.options and prints the real option text, falling
back to blank lines only when a question genuinely has none on record.

Also fixed the print-time cutting-point guard: it compared raw point sum
to cutting point regardless of evaluationMethod, wrongly blocking valid
low-point-sum PERCENTAGE papers from printing. Now branches the same way
RecordResultModal's grading preview already does, and surfaces the
matching backend validation error (paper_cannot_reach_cutting_point) added
server-side for the same reason.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/backoffice/src/app/features/exam/api/exam-api.ts

@@ -20,7 +20,9 @@ const examApi = baseApi.injectEndpoints({
       providesTags: ['Api'],
     }),
     getExam: builder.query<Exam, string>({
-      query: (id) => `/exams/${id}?i=questions`,
+      // Nested relation so CHOICE questions carry their options here too —
+      // needed to print real answer choices instead of blank A/B/C/D lines.
+      query: (id) => `/exams/${id}?i=questions,questions.options`,
       providesTags: ['Api'],
     }),
     createExam: builder.mutation<Exam, CreateExamPayload>({

apps/backoffice/src/app/features/exam/pages/ExamDetailPage.tsx

@@ -174,7 +174,12 @@ export function ExamDetailPage() {
       notify.error(
         key.startsWith('insufficient_approved_questions')
           ? `${t('exam.notEnoughApproved')} (${key.split(':')[1] ?? ''})`
-          : key,
+          : key.startsWith('paper_cannot_reach_cutting_point')
+            ? t('exam.cannotReachCuttingPoint', {
+                max: key.split(':')[1]?.split('/')[0] ?? '',
+                cuttingPoint: key.split(':')[1]?.split('/')[1] ?? '',
+              })
+            : key,
       );
     }
   };
@@ -190,18 +195,35 @@ export function ExamDetailPage() {
       notify.error(
         key.startsWith('question_not_approved')
           ? t('question.qc.onlyApprovedUsable')
-          : key,
+          : key.startsWith('paper_cannot_reach_cutting_point')
+            ? t('exam.cannotReachCuttingPoint', {
+                max: key.split(':')[1]?.split('/')[0] ?? '',
+                cuttingPoint: key.split(':')[1]?.split('/')[1] ?? '',
+              })
+            : key,
       );
     }
   };
   const handlePrint = async () => {
-    const total = (exam.questions ?? []).reduce(
-      (s, q) => s + Number(q.points),
-      0,
-    );
-    if (total < Number(exam.cuttingPoint)) {
+    // The reachable max depends on the evaluation method, not the raw point
+    // sum — mirrors RecordResultModal's grading math so "can this paper pass"
+    // means the same thing here as it does at marking time. Cutting point can
+    // be raised after the paper was assembled (edit modal, no re-check on
+    // save), so this still needs to run even though assignment now enforces
+    // it too.
+    const questions = exam.questions ?? [];
+    const total = questions.reduce((s, q) => s + Number(q.points), 0);
+    const reachableMax =
+      exam.evaluationMethod === 'AVERAGE'
+        ? questions.length
+          ? total / questions.length
+          : 0
+        : exam.evaluationMethod === 'PERCENTAGE'
+          ? 100
+          : total;
+    if (reachableMax < Number(exam.cuttingPoint)) {
       notify.error(
-        `Total question marks (${total}) is less than the passing mark (${exam.cuttingPoint}). Add more questions or adjust the cutting point before printing.`,
+        `This paper cannot reach the passing mark under its ${EVAL_LABEL[exam.evaluationMethod] ?? exam.evaluationMethod} evaluation (max ${reachableMax}, pass mark ${exam.cuttingPoint}). Add more questions or adjust the cutting point before printing.`,
       );
       return;
     }
@@ -235,7 +257,23 @@ export function ExamDetailPage() {
         <p style="margin: 0 0 4px 0; font-size: 14px; line-height: 1.5;">${titleStr}</p>
         ${descStr ? `<p style="margin: 0 0 8px 0; font-size: 12px; color: #555; line-height: 1.4;">${descStr}</p>` : ""}
         ${q.form === "ESSAY" ? '<div style="border-bottom: 1px dashed #ccc; height: 80px; margin-bottom: 12px;"></div>'.repeat(3) : ""}
-        ${q.form === "CHOICE" ? ["A. ______", "B. ______", "C. ______", "D. ______"].map((l) => `<p style="margin: 4px 0; font-size: 13px;">${l}</p>`).join("") : ""}
+        ${
+          q.form === "CHOICE"
+            ? q.options && q.options.length
+              ? q.options
+                  .slice()
+                  .sort((a, b) => a.order - b.order)
+                  .map(
+                    (o, oi) =>
+                      `<p style="margin: 4px 0; font-size: 13px;">${String.fromCharCode(65 + oi)}. ${o.text[locale] || o.text.en}</p>`,
+                  )
+                  .join("")
+              // No options on record (legacy question, or options relation
+              // wasn't loaded) — fall back to blank lines rather than
+              // printing nothing.
+              : ["A. ______", "B. ______", "C. ______", "D. ______"].map((l) => `<p style="margin: 4px 0; font-size: 13px;">${l}</p>`).join("")
+            : ""
+        }
       </div>`;
       })
       .join("");

apps/backoffice/src/app/features/exam/types/exam.ts

@@ -15,11 +15,19 @@ export type ExamStatus =
   | "POSTPONED"
   | "PUBLISHED";
 
+/** Only populated when the exam is fetched with `?i=questions,questions.options`. */
+export interface QuestionOptionBrief {
+  id: string;
+  text: LocalePair;
+  order: number;
+}
+
 export interface QuestionBrief {
   id: string;
   title: LocalePair;
   form: QuestionForm;
   points: number;
+  options?: QuestionOptionBrief[];
 }
 
 export interface Exam {

apps/backoffice/src/app/i18n/locales/am.ts

@@ -365,6 +365,8 @@ export const am: Translations = {
     randomSelected: "{{count}} የጸደቁ ጥያቄዎች ተመርጠዋል",
     randomError: "ጥያቄዎችን መምረጥ አልተቻለም",
     notEnoughApproved: "ለዚህ ትምህርት በቂ የጸደቁ ጥያቄዎች የሉም።",
+    cannotReachCuttingPoint:
+      "ይህ ወረቀት የማለፊያ ነጥቡን ሊደርስ አይችልም (ከፍተኛ {{max}}፣ የማለፊያ ነጥብ {{cuttingPoint}})። ተጨማሪ ወይም ከፍ ያለ ነጥብ ያላቸው ጥያቄዎችን ጨምር፣ ወይም የማለፊያ ነጥቡን ቀንስ።",
   },
 
   country: {

apps/backoffice/src/app/i18n/locales/en.ts

@@ -362,6 +362,8 @@ export const en = {
     randomError: 'Could not draw questions',
     notEnoughApproved:
       'Not enough approved questions in the bank for this subject.',
+    cannotReachCuttingPoint:
+      'This paper cannot reach the passing mark (max {{max}}, pass mark {{cuttingPoint}}). Add more/higher-point questions, or lower the cutting point.',
   },
 
   country: {