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/Pages/Admin/Settings.cshtml.cs

@@ -20,6 +20,16 @@ public class SettingsModel : PageModel
     [BindProperty] public string? AiModel { get; set; }
     [BindProperty] public string AiSystemPrompt { get; set; } = "";
     [BindProperty] public bool AiAutoApprove { get; set; }
+    // Channel scraping sources
+    [BindProperty] public bool AutoIngestEnabled { get; set; }
+    [BindProperty] public int IngestIntervalMinutes { get; set; } = 30;
+    [BindProperty] public bool TelegramEnabled { get; set; }
+    [BindProperty] public string? TelegramChannels { get; set; }
+    [BindProperty] public bool BaleEnabled { get; set; }
+    [BindProperty] public string? BaleBotToken { get; set; }
+    [BindProperty] public bool DivarEnabled { get; set; }
+    [BindProperty] public string? DivarCity { get; set; }
+    [BindProperty] public string? DivarQueries { get; set; }
     [TempData] public string? Saved { get; set; }
 
     public async Task OnGetAsync()
@@ -33,6 +43,15 @@ public class SettingsModel : PageModel
         AiModel = s.AiModel;
         AiSystemPrompt = s.AiSystemPrompt;
         AiAutoApprove = s.AiAutoApprove;
+        AutoIngestEnabled = s.AutoIngestEnabled;
+        IngestIntervalMinutes = s.IngestIntervalMinutes;
+        TelegramEnabled = s.TelegramEnabled;
+        TelegramChannels = s.TelegramChannels;
+        BaleEnabled = s.BaleEnabled;
+        BaleBotToken = s.BaleBotToken;
+        DivarEnabled = s.DivarEnabled;
+        DivarCity = s.DivarCity;
+        DivarQueries = s.DivarQueries;
     }
 
     public async Task<IActionResult> OnPostAsync()
@@ -47,6 +66,15 @@ public class SettingsModel : PageModel
             AiModel = AiModel,
             AiSystemPrompt = AiSystemPrompt,
             AiAutoApprove = AiAutoApprove,
+            AutoIngestEnabled = AutoIngestEnabled,
+            IngestIntervalMinutes = IngestIntervalMinutes,
+            TelegramEnabled = TelegramEnabled,
+            TelegramChannels = TelegramChannels,
+            BaleEnabled = BaleEnabled,
+            BaleBotToken = BaleBotToken,
+            DivarEnabled = DivarEnabled,
+            DivarCity = DivarCity,
+            DivarQueries = DivarQueries,
         });
         Saved = "تنظیمات ذخیره شد.";
         return RedirectToPage();