Move ingestion + Telegram/Bale/Divar config to DB-backed admin settings

- AppSetting gains source config: AutoIngestEnabled, IngestIntervalMinutes, Telegram/Bale/Divar enabled+channels/token/queries
- IListingSource.FetchAsync(AppSetting) — sources read config from DB, not IOptions/appsettings; sample source dev-only
- IngestionWorker reads AutoIngest+interval from DB each cycle (toggle at runtime, no redeploy)
- /Admin/Settings gets a 'منابع جمع‌آوری' section; removed Ingestion env/appsettings + compose env vars
- ENV_FILE shrinks to HOST_PORT + POSTGRES_* + ADMIN_PHONE (AI + sources are all in-admin); migration

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/JobsMedical.Web/Models/AppSetting.cs

@@ -32,8 +32,31 @@ public class AppSetting
     /// <summary>If AI approves AND Mode is Automatic, publish without human review.</summary>
     public bool AiAutoApprove { get; set; } = false;
 
+    // --- Channel scraping sources (configured here, NOT in env) ---
+    /// <summary>Run the ingestion worker on a timer.</summary>
+    public bool AutoIngestEnabled { get; set; } = false;
+    public int IngestIntervalMinutes { get; set; } = 30;
+
+    public bool TelegramEnabled { get; set; } = false;
+    /// <summary>Public Telegram channel usernames, one per line or comma-separated.</summary>
+    [MaxLength(2000)] public string? TelegramChannels { get; set; }
+
+    public bool BaleEnabled { get; set; } = false;
+    [MaxLength(200)] public string? BaleBotToken { get; set; }
+
+    public bool DivarEnabled { get; set; } = false;
+    [MaxLength(60)] public string? DivarCity { get; set; } = "tehran";
+    /// <summary>Divar search terms, one per line or comma-separated.</summary>
+    [MaxLength(2000)] public string? DivarQueries { get; set; }
+
     public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
 
+    /// <summary>Split a textarea (newline/comma separated) into trimmed non-empty items.</summary>
+    public static List<string> SplitList(string? s) => string.IsNullOrWhiteSpace(s)
+        ? new()
+        : s.Split(new[] { '\n', '\r', ',', '،' }, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
+           .ToList();
+
     public const string DefaultPrompt = """
         تو دستیار بررسی آگهی‌های کاری حوزه درمان برای پلتفرم «همکادر» هستی.
         هر آگهی خام را بخوان و تصمیم بگیر: