feat(core): add shared DTOs, MqttTopics constants, DatabaseBootstrapper, and ManagedMqttClient extensions

FinlyticCore/Dtos/Sentiment/FinBertResultDto.cs

@@ -40,7 +40,7 @@ public record FinBertResultDto
     /// <summary>
     /// Gets or sets the compound score (-1.0 to +1.0).
     /// </summary>
-    [JsonPropertyName("compoundScore")]
+    [JsonPropertyName("compound_score")]
     public double CompoundScore { get; init; }
 
     /// <summary>
@@ -49,6 +49,12 @@ public record FinBertResultDto
     [JsonPropertyName("confidence")]
     public double Confidence { get; init; }
 
+    /// <summary>
+    /// Gets or sets the estimated market impact ("HIGH", "MEDIUM", "LOW").
+    /// </summary>
+    [JsonPropertyName("impact")]
+    public string? Impact { get; init; }
+
     /// <summary>
     /// Gets or sets the probability breakdown.
     /// </summary>
@@ -56,8 +62,14 @@ public record FinBertResultDto
     public FinBertProbabilities Probabilities { get; init; } = new();
 
     /// <summary>
-    /// Gets or sets the short summary snippet highlighting the impact of the article.
+    /// Gets or sets the short key highlight extracted by FinBERT / n8n.
+    /// </summary>
+    [JsonPropertyName("key_highlight")]
+    public string? KeyHighlight { get; init; }
+
+    /// <summary>
+    /// Legacy alias for KeyHighlight / summary snippet.
     /// </summary>
     [JsonPropertyName("summarySnippet")]
-    public string? SummarySnippet { get; init; }
+    public string? SummarySnippet => KeyHighlight;
 }