chore(infra): update compose configurations, mqtt health bridge, and export scripts

FinlyticBackend/Controllers/AdminSettingsController.cs

@@ -83,6 +83,7 @@ public class AdminSettingsController : ControllerBase
         ["FinlyticAnalyzer"] = "engine",
         ["FinlyticTrades"] = "engine",
         ["FinlyticBot"] = "bot",
+        ["FinlyticNotify"] = "notify",
         // FinlyticSimulation was previously missing from this map entirely, so its settings
         // (SimulationSettingKeys: slippage/fee defaults, matrix-recompute schedule, etc.) never showed up
         // in the admin UI's settings screen even though the sim_settings_GetAll/Update RPC channels exist.
@@ -209,6 +210,7 @@ public class AdminSettingsController : ControllerBase
             ("FinlyticFundamentals", $"{MqttTopics.Channels.HealthPing}/FinlyticFundamentals", "Financial Statements & Estimates", "PostgreSQL fundamentals"),
             ("FinlyticEngine", $"{MqttTopics.Channels.HealthPing}/FinlyticEngine", "Strategy Screener & Signals", "PostgreSQL engine"),
             ("FinlyticBot", $"{MqttTopics.Channels.HealthPing}/FinlyticBot", "Automated Trading Execution", "PostgreSQL bot"),
+            ("FinlyticNotify", $"{MqttTopics.Channels.HealthPing}/FinlyticNotify", "ntfy Push Notifications", "PostgreSQL / Mosquitto"),
         };
 
         var results = new List<ServiceHealthStatusDto>

FinlyticBackend/Program.cs

@@ -149,7 +149,7 @@ app.UseExceptionHandler();
 app.UseForwardedHeaders(new ForwardedHeadersOptions
 {
     ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto | ForwardedHeaders.XForwardedHost,
-    KnownNetworks = { },
+    KnownIPNetworks = { },
     KnownProxies = { }
 });
 

FinlyticBackend/Services/SystemHealthBackgroundService.cs

@@ -70,6 +70,7 @@ public class SystemHealthBackgroundService : BackgroundService
             ("FinlyticFundamentals", "health_Ping/FinlyticFundamentals", "Financial Statements & Estimates", "PostgreSQL fundamentals"),
             ("FinlyticEngine", "health_Ping/FinlyticEngine", "Strategy Screener & Signals", "PostgreSQL engine"),
             ("FinlyticBot", "health_Ping/FinlyticBot", "Automated Trading Execution", "PostgreSQL bot"),
+            ("FinlyticNotify", "health_Ping/FinlyticNotify", "ntfy Push Notifications", "PostgreSQL / Mosquitto"),
         };
 
         var results = new List<ServiceHealthStatusDto>

FinlyticBackend/Util/BackendMqttBridge.cs

@@ -9,6 +9,7 @@ using FinlyticBackend.Database;
 using FinlyticBackend.Hubs;
 using FinlyticBackend.Services;
 using FinlyticBackend.Settings;
+using FinlyticCore.Dtos;
 using FinlyticCore.Dtos.Bot;
 using FinlyticCore.Dtos.Logging;
 using FinlyticCore.Dtos.News;
@@ -104,6 +105,11 @@ public class BackendMqttBridge : ManagedMqttClient, IHostedService
             MqttTopics.RequestFilter(MqttTopics.Channels.BackendGetAggregatedFavorites),
             HandleGetAggregatedFavoritesRpcAsync);
 
+        // Username lookup RPC Endpoint for FinlyticNotify
+        await SubscribeRpcAsync<UserIdRequest, string?>(
+            MqttTopics.RequestFilter(MqttTopics.Channels.BackendGetUsername),
+            HandleGetUsernameRpcAsync);
+
         // FinlyticBackend previously never broadcast its OWN structured logs at all (it only relayed other
         // services' logs received on MqttTopics.LogsWildcard, subscribed above) - it never used
         // IFinlyticLogger<T>, so FinlyticLogBroadcaster.Broadcast was never invoked for anything happening
@@ -286,4 +292,24 @@ public class BackendMqttBridge : ManagedMqttClient, IHostedService
             "[BackendMqttBridge] Responded to backend_GetAggregatedFavorites with {Count} unique ISINs. [CorrelationId: {CorrelationId}]", isins.Count, correlationId);
         return isins;
     }
+
+    private async Task<string?> HandleGetUsernameRpcAsync(UserIdRequest? req, string correlationId)
+    {
+        if (req == null || req.UserId == Guid.Empty) return null;
+
+        using var scope = _scopeFactory.CreateScope();
+        var dbContext = scope.ServiceProvider.GetRequiredService<BackendDbContext>();
+
+        var user = await dbContext.Users
+            .AsNoTracking()
+            .FirstOrDefaultAsync(u => u.Id == req.UserId);
+
+        if (user == null) return null;
+
+        string username = !string.IsNullOrWhiteSpace(user.FullName)
+            ? user.FullName.Trim().ToLowerInvariant().Replace(" ", "_")
+            : user.Email.Split('@')[0].Trim().ToLowerInvariant();
+
+        return username;
+    }
 }