Add SwarmUI settings management and portrait generation enhancements

- Introduced new API endpoints for managing SwarmUI settings, including fetching and saving presets and age rules.
- Updated the portrait generation logic to utilize the new settings structure, allowing for dynamic preset selection based on age.
- Enhanced UI components to support SwarmUI settings, including localization for new strings and improved styling for settings sections.
- Added tests to verify the functionality of new settings endpoints and portrait generation behavior.

This commit lays the groundwork for more flexible and user-friendly portrait generation options.

src/HSchool.Server/Game/SwarmUiClient.cs

@@ -55,11 +55,39 @@ internal sealed class SwarmUiClient
         }
     }
 
+    public async Task<SwarmUiDiscovery> FetchDiscoveryAsync(CancellationToken cancellationToken)
+    {
+        if (!IsConfigured)
+        {
+            return SwarmUiDiscovery.Offline;
+        }
+
+        try
+        {
+            return await RunWithSessionAsync(async () =>
+            {
+                using var content = new StringContent(
+                    JsonSerializer.Serialize(new { session_id = _sessionId }),
+                    Encoding.UTF8,
+                    "application/json");
+                using var response = await _http.PostAsync("/API/ListT2IParams", content, cancellationToken);
+                response.EnsureSuccessStatusCode();
+                var json = await response.Content.ReadAsStringAsync(cancellationToken);
+                using var document = JsonDocument.Parse(json);
+                return SwarmUiDiscoveryParser.Parse(document.RootElement);
+            }, cancellationToken);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogDebug(ex, "SwarmUI discovery failed.");
+            return SwarmUiDiscovery.Offline;
+        }
+    }
+
     public async Task<byte[]> GenerateAsync(
         string prompt,
         string negativePrompt,
-        SwarmUiSettings settings,
-        PortraitKind kind,
+        SwarmUiResolvedProfile profile,
         CancellationToken cancellationToken)
     {
         if (!IsConfigured)
@@ -69,7 +97,7 @@ internal sealed class SwarmUiClient
 
         return await RunWithSessionAsync(async () =>
         {
-            var preset = settings.PresetFor(kind);
+            var kind = profile.KindPreset;
             var body = new Dictionary<string, object?>
             {
                 ["session_id"] = _sessionId,
@@ -77,28 +105,33 @@ internal sealed class SwarmUiClient
                 ["donotsave"] = true,
                 ["prompt"] = prompt,
                 ["negativeprompt"] = negativePrompt,
-                ["model"] = settings.Model,
-                ["steps"] = settings.Steps,
-                ["cfgscale"] = settings.CfgScale,
-                ["width"] = preset.Width,
-                ["height"] = preset.Height,
-                ["seed"] = settings.Seed,
+                ["model"] = profile.Model,
+                ["steps"] = profile.Steps,
+                ["cfgscale"] = profile.CfgScale,
+                ["width"] = kind.Width,
+                ["height"] = kind.Height,
+                ["seed"] = profile.Seed,
             };
 
-            if (!string.IsNullOrWhiteSpace(settings.Sampler))
+            if (!string.IsNullOrWhiteSpace(profile.Sampler))
             {
-                body["sampler"] = settings.Sampler;
+                body["sampler"] = profile.Sampler;
             }
 
-            if (!string.IsNullOrWhiteSpace(settings.Scheduler))
+            if (!string.IsNullOrWhiteSpace(profile.Scheduler))
             {
-                body["scheduler"] = settings.Scheduler;
+                body["scheduler"] = profile.Scheduler;
             }
 
-            if (settings.ClipSkip > 0)
+            if (profile.ClipSkip > 0)
             {
-                // SwarmUI "CLIP Stop At Layer" — clip skip N is layer -N from the end.
-                body["clipstopatlayer"] = -settings.ClipSkip;
+                body["clipstopatlayer"] = -profile.ClipSkip;
+            }
+
+            var loras = SwarmUiLoraFormatter.FormatForApi(profile.PositiveLoras);
+            if (loras is not null)
+            {
+                body["loras"] = loras;
             }
 
             using var content = new StringContent(JsonSerializer.Serialize(body), Encoding.UTF8, "application/json");