feat(news): add scraper adapters, article deduplication, blocklist service, and remove tracked publish artifacts

FinlyticNews/Entities/BlockedNewsUrlEntity.cs

@@ -0,0 +1,25 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace FinlyticNews.Entities;
+
+/// <summary>
+/// Entity representing a blocked news URL (e.g. duplicates, missing content, or no matched assets).
+/// Prevents redundant re-discovery and re-scraping of known bad or duplicate URLs.
+/// </summary>
+[Table("BlockedNewsUrls")]
+public class BlockedNewsUrlEntity
+{
+    [Key]
+    public Guid Id { get; set; } = Guid.NewGuid();
+
+    [Required]
+    [MaxLength(2048)]
+    public string Url { get; set; } = string.Empty;
+
+    [MaxLength(256)]
+    public string Reason { get; set; } = string.Empty;
+
+    public DateTime BlockedAtUtc { get; set; } = DateTime.UtcNow;
+}