feat(VocabPracticeDialog, VocabCourseView): implement SRS rating feature and enhance user feedback

- Added SRS rating buttons in VocabPracticeDialog to allow users to rate their confidence after answering vocabulary questions.
- Updated methods to handle SRS ratings and integrated them into the review process, improving spaced repetition feedback.
- Enhanced UI with new styles for SRS rating buttons and updated translations for SRS-related terms in multiple languages.
- Modified VocabCourseView to display appropriate introductory text based on SRS due items, improving user guidance.

frontend/src/dialogues/socialnetwork/VocabPracticeDialog.vue

@@ -47,6 +47,22 @@
             </div>
           </div>
 
+          <div v-if="showSrsRatingButtons" class="srs-rating">
+            <div class="srs-rating__title">{{ $t('socialnetwork.vocab.practice.srsRateTitle') }}</div>
+            <button
+              v-for="option in srsRatingOptions"
+              :key="option.value"
+              type="button"
+              class="srs-rating__button"
+              :class="`srs-rating__button--${option.value}`"
+              :disabled="locked"
+              @click="submitSrsRating(option.value)"
+            >
+              <strong>{{ option.label }}</strong>
+              <span>{{ option.hint }}</span>
+            </button>
+          </div>
+
           <div v-if="!answered" class="answerArea">
             <div v-if="simpleMode" class="choices">
               <button
@@ -165,11 +181,45 @@ export default {
     },
     showNextButton() {
       // Nur bei falscher Antwort auf "Weiter" warten
-      return this.answered && !this.lastCorrect;
+      return this.answered && !this.lastCorrect && !this.srsMode;
     },
     showSkipButton() {
       return !this.answered;
     },
+    showSrsRatingButtons() {
+      return this.srsMode && this.answered && !this.locked;
+    },
+    srsRatingOptions() {
+      if (!this.answered) {
+        return [];
+      }
+      if (!this.lastCorrect) {
+        return [
+          {
+            value: 'again',
+            label: this.$t('socialnetwork.vocab.practice.srsAgain'),
+            hint: this.$t('socialnetwork.vocab.practice.srsAgainHint')
+          }
+        ];
+      }
+      return [
+        {
+          value: 'hard',
+          label: this.$t('socialnetwork.vocab.practice.srsHard'),
+          hint: this.$t('socialnetwork.vocab.practice.srsHardHint')
+        },
+        {
+          value: 'good',
+          label: this.$t('socialnetwork.vocab.practice.srsGood'),
+          hint: this.$t('socialnetwork.vocab.practice.srsGoodHint')
+        },
+        {
+          value: 'easy',
+          label: this.$t('socialnetwork.vocab.practice.srsEasy'),
+          hint: this.$t('socialnetwork.vocab.practice.srsEasyHint')
+        }
+      ];
+    },
   },
   methods: {
     open({ languageId, chapterId, lessonId, courseId, initialPool = null, srsMode = false, onClose = null }) {
@@ -376,7 +426,7 @@ export default {
             wrong: Number(st.w) || 0
           };
         })
-        .filter((entry) => entry.attempts < PRACTICE_MIN_EXPOSURES && !recent.has(entry.item.id))
+        .filter((entry) => entry.attempts < (this.srsMode ? 1 : PRACTICE_MIN_EXPOSURES) && !recent.has(entry.item.id))
         .sort((a, b) => {
           if (a.attempts !== b.attempts) return a.attempts - b.attempts;
           if (a.wrong !== b.wrong) return b.wrong - a.wrong;
@@ -433,18 +483,19 @@ export default {
         // ignore autoplay issues
       }
     },
-    reportSrsReview(isCorrect) {
+    reportSrsReview(isCorrect, rating = null) {
       if (!this.current || !this.openParams?.courseId) {
-        return;
+        return Promise.resolve();
       }
-      apiClient.post('/api/vocab/srs/review', {
+      return apiClient.post('/api/vocab/srs/review', {
         courseId: this.openParams.courseId || this.current.courseId,
         lessonId: this.openParams.lessonId || this.current.lessonId || null,
         itemKey: this.current.itemKey || null,
         learning: this.current.learning,
         reference: this.current.reference,
         direction: this.direction,
-        correct: Boolean(isCorrect)
+        correct: Boolean(isCorrect),
+        rating
       }).catch((error) => {
         console.warn('[VocabPracticeDialog] SRS review could not be saved:', error);
       });
@@ -454,7 +505,9 @@ export default {
       this.lastCorrect = isCorrect;
       if (isCorrect) this.correctCount += 1;
       else this.wrongCount += 1;
+      if (!this.srsMode) {
         this.reportSrsReview(isCorrect);
+      }
 
       const id = this.current?.id;
       if (!id) return;
@@ -472,12 +525,20 @@ export default {
       this.lastIds.unshift(id);
       this.lastIds = this.lastIds.slice(0, 3);
     },
+    async submitSrsRating(rating) {
+      if (!this.srsMode || !this.answered || this.locked) {
+        return;
+      }
+      this.locked = true;
+      await this.reportSrsReview(this.lastCorrect, rating);
+      this.next();
+    },
     submitChoice(opt) {
       if (this.locked) return;
       const ok = this.acceptableAnswers.map(this.normalize).includes(this.normalize(opt));
       this.markResult(ok);
       this.playSound(ok);
-      if (ok) {
+      if (ok && !this.srsMode) {
         // Direkt weiter zur nächsten Frage (kein Klick nötig)
         this.locked = true;
         this.autoAdvanceTimer = setTimeout(() => {
@@ -492,7 +553,7 @@ export default {
       const ok = this.acceptableAnswers.map(this.normalize).includes(ans);
       this.markResult(ok);
       this.playSound(ok);
-      if (ok) {
+      if (ok && !this.srsMode) {
         this.locked = true;
         this.autoAdvanceTimer = setTimeout(() => {
           this.autoAdvanceTimer = null;
@@ -585,6 +646,46 @@ export default {
 .controls {
   margin-top: 12px;
 }
+.srs-rating {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
+  gap: 8px;
+  margin: 12px 0;
+}
+.srs-rating__title {
+  grid-column: 1 / -1;
+  font-size: 0.82rem;
+  font-weight: 700;
+  color: var(--color-text-secondary, #5f554e);
+}
+.srs-rating__button {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  align-items: flex-start;
+  padding: 8px 10px;
+  border: 1px solid var(--color-border, #d7d0c8);
+  border-radius: 10px;
+  background: rgba(255, 255, 255, 0.9);
+  cursor: pointer;
+  text-align: left;
+}
+.srs-rating__button span {
+  font-size: 0.74rem;
+  color: var(--color-text-secondary, #6b625b);
+}
+.srs-rating__button--again {
+  border-color: rgba(198, 75, 75, 0.45);
+}
+.srs-rating__button--hard {
+  border-color: rgba(210, 153, 74, 0.5);
+}
+.srs-rating__button--good {
+  border-color: rgba(90, 145, 95, 0.45);
+}
+.srs-rating__button--easy {
+  border-color: rgba(78, 139, 188, 0.45);
+}
 .feedback {
   padding: 10px;
   border: 1px solid #ccc;

frontend/src/i18n/locales/ceb/socialnetwork.json

@@ -731,7 +731,8 @@
                 "srsEyebrow": "Dugay nga memorya",
                 "srsTitle": "{count} ka termino ang angay karon",
                 "srsIntro": "Kini nga balik-balik gikan sa SRS nga plano sa matag pulong. Una kini kaysa bag-ong materyal kay nagpalig-on kini sa mga pulong nga hapit malimtan.",
-                "srsStart": "Sugdi ang daily review"
+                "srsStart": "Sugdi ang daily review",
+                "courseTodayPlanIntroSrs": "Didaktik nga han-ay: una ang SRS daily review sa tagsa-tagsa ka pulong. Human ana, mubo nga review, padayon sa block, ug intensive review kung kinahanglan. Mao ni ang pagpalig-on sa daan nga materyal sa dili pa modugang ug bag-o."
             },
             "title": "Trainer sa bokabularyo",
             "description": "Paghimo og pinulongans (or subscribe aron them) ug share them uban sa friends.",
@@ -787,7 +788,16 @@
                 "acceptable": "Acceptable answers:",
                 "stats": "Stats",
                 "success": "Malampuson",
-                "fail": "Fail"
+                "fail": "Fail",
+                "srsRateTitle": "Unsa ka lig-on sa imong pagbati?",
+                "srsAgain": "Usab",
+                "srsAgainHint": "balikon dayon",
+                "srsHard": "Lisod",
+                "srsHardHint": "mubo nga interval",
+                "srsGood": "Maayo",
+                "srsGoodHint": "normal nga iskedyul",
+                "srsEasy": "Sayon",
+                "srsEasyHint": "mas layo nga interval"
             },
             "search": {
                 "open": "Pangita",

frontend/src/i18n/locales/de/socialnetwork.json

@@ -453,7 +453,16 @@
                 "acceptable": "Mögliche richtige Übersetzungen:",
                 "stats": "Statistik",
                 "success": "Erfolg",
-                "fail": "Misserfolg"
+                "fail": "Misserfolg",
+                "srsRateTitle": "Wie sicher war das?",
+                "srsAgain": "Nochmal",
+                "srsAgainHint": "sehr bald wiederholen",
+                "srsHard": "Schwer",
+                "srsHardHint": "kurzes Intervall",
+                "srsGood": "Gut",
+                "srsGoodHint": "normal planen",
+                "srsEasy": "Leicht",
+                "srsEasyHint": "größerer Abstand"
             },
             "search": {
                 "open": "Suche",
@@ -813,7 +822,8 @@
                 "srsEyebrow": "Langzeitgedächtnis",
                 "srsTitle": "{count} Begriffe sind heute fällig",
                 "srsIntro": "Diese Wiederholung kommt aus dem SRS-Plan einzelner Begriffe. Sie hat Vorrang vor neuem Stoff, weil sie kurz vor dem Vergessen stabilisiert.",
-                "srsStart": "Tageswiederholung starten"
+                "srsStart": "Tageswiederholung starten",
+                "courseTodayPlanIntroSrs": "Didaktische Reihenfolge: Zuerst die fällige SRS-Tageswiederholung einzelner Begriffe. Danach kommen Kurz-Wiederholungen, Blockfortschritt und ggf. intensive Wiederholung. So wird altes Material stabilisiert, bevor neues Material dazukommt."
             }
         }
     }

frontend/src/i18n/locales/en/socialnetwork.json

@@ -453,7 +453,16 @@
                 "acceptable": "Acceptable answers:",
                 "stats": "Stats",
                 "success": "Success",
-                "fail": "Fail"
+                "fail": "Fail",
+                "srsRateTitle": "How solid did it feel?",
+                "srsAgain": "Again",
+                "srsAgainHint": "repeat very soon",
+                "srsHard": "Hard",
+                "srsHardHint": "short interval",
+                "srsGood": "Good",
+                "srsGoodHint": "normal schedule",
+                "srsEasy": "Easy",
+                "srsEasyHint": "longer interval"
             },
             "search": {
                 "open": "Search",
@@ -813,7 +822,8 @@
                 "srsEyebrow": "Long-term memory",
                 "srsTitle": "{count} terms are due today",
                 "srsIntro": "This review comes from the SRS schedule of individual terms. It should come before new material because it stabilizes items close to forgetting.",
-                "srsStart": "Start daily review"
+                "srsStart": "Start daily review",
+                "courseTodayPlanIntroSrs": "Pedagogical order: start with the due SRS daily review for individual terms. Then quick reviews, block progress, and intensive review if needed. This stabilizes old material before new material is added."
             }
         }
     }

frontend/src/views/social/VocabCourseView.vue

@@ -69,7 +69,9 @@
         <div v-if="todayRecommendedSteps.length > 0" class="course-today-plan">
           <h4 class="course-today-plan__title">{{ $t('socialnetwork.vocab.courses.courseTodayPlanTitle') }}</h4>
           <p class="course-today-plan__intro">
-            {{ dueReviewLessons.length > 0
+            {{ srsDueCount > 0
+              ? $t('socialnetwork.vocab.courses.courseTodayPlanIntroSrs')
+              : dueReviewLessons.length > 0
               ? $t('socialnetwork.vocab.courses.courseTodayPlanIntro')
               : $t('socialnetwork.vocab.courses.courseTodayPlanIntroNoDueReview') }}
           </p>