feat(frontend): enhance EmotionalStats component with detailed mood analysis

frontend/src/components/EmotionalStats.tsx

@@ -9,6 +9,9 @@ type EmotionalStatsProps = {
 
 const EmotionalStats = ({contentData}: EmotionalStatsProps) => {
   const rows = contentData.average_emotion_by_topic ?? [];
+  const overallEmotionAverage = contentData.overall_emotion_average ?? [];
+  const dominantEmotionDistribution = contentData.dominant_emotion_distribution ?? [];
+  const emotionBySource = contentData.emotion_by_source ?? [];
   const lowSampleThreshold = 20;
   const stableSampleThreshold = 50;
   const emotionKeys = rows.length
@@ -64,41 +67,106 @@ const EmotionalStats = ({contentData}: EmotionalStatsProps) => {
   return (
     <div style={styles.page}>
       <div style={{ ...styles.container, ...styles.card, marginTop: 16 }}>
-        <h2 style={styles.sectionTitle}>Average Emotion by Topic</h2>
+        <h2 style={styles.sectionTitle}>Topic Mood Overview</h2>
-        <p style={styles.sectionSubtitle}>Read confidence together with sample size. Topics with fewer than {lowSampleThreshold} events are usually noisy and less reliable.</p>
+        <p style={styles.sectionSubtitle}>Use the strength score together with post count. Topics with fewer than {lowSampleThreshold} events are often noisy.</p>
         <div style={styles.emotionalSummaryRow}>
           <span><strong style={{ color: "#24292f" }}>Topics:</strong> {strongestPerTopic.length}</span>
-          <span><strong style={{ color: "#24292f" }}>Median Sample:</strong> {medianSampleSize} events</span>
+          <span><strong style={{ color: "#24292f" }}>Median Posts:</strong> {medianSampleSize}</span>
-          <span><strong style={{ color: "#24292f" }}>Low Sample (&lt;{lowSampleThreshold}):</strong> {lowSampleTopics}</span>
+          <span><strong style={{ color: "#24292f" }}>Small Topics (&lt;{lowSampleThreshold}):</strong> {lowSampleTopics}</span>
-          <span><strong style={{ color: "#24292f" }}>Stable Sample ({stableSampleThreshold}+):</strong> {stableSampleTopics}</span>
+          <span><strong style={{ color: "#24292f" }}>Stable Topics ({stableSampleThreshold}+):</strong> {stableSampleTopics}</span>
         </div>
         <p style={{ ...styles.sectionSubtitle, marginTop: 10, marginBottom: 0 }}>
-          Confidence reflects how strongly one emotion leads within a topic, not model accuracy. Use larger samples for stronger conclusions.
+          Strength means how far the top emotion is ahead in that topic. It does not mean model accuracy.
         </p>
       </div>
 
       <div style={{ ...styles.container, ...styles.grid }}>
+        <div style={{ ...styles.card, gridColumn: "span 4" }}>
+          <h2 style={styles.sectionTitle}>Mood Averages</h2>
+          <p style={styles.sectionSubtitle}>Average score for each emotion.</p>
+          {!overallEmotionAverage.length ? (
+            <div style={styles.topUserMeta}>No overall emotion averages available.</div>
+          ) : (
+            <div style={{ ...styles.topUsersList, maxHeight: 260, overflowY: "auto" }}>
+              {[...overallEmotionAverage]
+                .sort((a, b) => b.score - a.score)
+                .map((row) => (
+                  <div key={row.emotion} style={styles.topUserItem}>
+                    <div style={styles.topUserName}>{formatEmotion(row.emotion)}</div>
+                    <div style={styles.topUserMeta}>{row.score.toFixed(3)}</div>
+                  </div>
+                ))}
+            </div>
+          )}
+        </div>
+
+        <div style={{ ...styles.card, gridColumn: "span 4" }}>
+          <h2 style={styles.sectionTitle}>Mood Split</h2>
+          <p style={styles.sectionSubtitle}>How often each emotion is dominant.</p>
+          {!dominantEmotionDistribution.length ? (
+            <div style={styles.topUserMeta}>No dominant-emotion split available.</div>
+          ) : (
+            <div style={{ ...styles.topUsersList, maxHeight: 260, overflowY: "auto" }}>
+              {[...dominantEmotionDistribution]
+                .sort((a, b) => b.ratio - a.ratio)
+                .map((row) => (
+                  <div key={row.emotion} style={styles.topUserItem}>
+                    <div style={styles.topUserName}>{formatEmotion(row.emotion)}</div>
+                    <div style={styles.topUserMeta}>{(row.ratio * 100).toFixed(1)}% • {row.count.toLocaleString()} events</div>
+                  </div>
+                ))}
+            </div>
+          )}
+        </div>
+
+        <div style={{ ...styles.card, gridColumn: "span 4" }}>
+          <h2 style={styles.sectionTitle}>Mood by Source</h2>
+          <p style={styles.sectionSubtitle}>Leading emotion in each source.</p>
+          {!emotionBySource.length ? (
+            <div style={styles.topUserMeta}>No source emotion profile available.</div>
+          ) : (
+            <div style={{ ...styles.topUsersList, maxHeight: 260, overflowY: "auto" }}>
+              {[...emotionBySource]
+                .sort((a, b) => b.event_count - a.event_count)
+                .map((row) => (
+                  <div key={row.source} style={styles.topUserItem}>
+                    <div style={styles.topUserName}>{row.source}</div>
+                    <div style={styles.topUserMeta}>
+                      {formatEmotion(row.dominant_emotion)} • {row.dominant_score.toFixed(3)} • {row.event_count.toLocaleString()} events
+                    </div>
+                  </div>
+                ))}
+            </div>
+          )}
+        </div>
+
+        <div style={{ ...styles.card, gridColumn: "span 12" }}>
+          <h2 style={styles.sectionTitle}>Topic Snapshots</h2>
+          <p style={styles.sectionSubtitle}>Per-topic mood with strength and post count.</p>
+          <div style={{ ...styles.grid, marginTop: 10 }}>
             {strongestPerTopic.map((topic) => (
-          <div key={topic.topic} style={{ ...styles.card, gridColumn: "span 4" }}>
+              <div key={topic.topic} style={{ ...styles.cardBase, gridColumn: "span 4" }}>
                 <h3 style={{ ...styles.sectionTitle, marginBottom: 6 }}>{topic.topic}</h3>
                 <div style={styles.emotionalTopicLabel}>
-              Top Emotion
+                  Likely Mood
                 </div>
                 <div style={styles.emotionalTopicValue}>
                   {formatEmotion(topic.emotion)}
                 </div>
                 <div style={styles.emotionalMetricRow}>
-              <span>Confidence</span>
+                  <span>Strength</span>
                   <span style={styles.emotionalMetricValue}>{topic.value.toFixed(3)}</span>
                 </div>
                 <div style={styles.emotionalMetricRowCompact}>
-              <span>Sample Size</span>
+                  <span>Posts in Topic</span>
-              <span style={styles.emotionalMetricValue}>{topic.count} events</span>
+                  <span style={styles.emotionalMetricValue}>{topic.count}</span>
                 </div>
               </div>
             ))}
           </div>
         </div>
+      </div>
+    </div>
   );
 }