feat(api): discovery endpoints for node types + connection providers

src/VolcanicCore.Api/Endpoints/ConnectionProvidersEndpoints.cs

@@ -0,0 +1,18 @@
+using VolcanicCore.Api.Registries;
+
+namespace VolcanicCore.Api.Endpoints;
+
+public static class ConnectionProvidersEndpoints
+{
+    public static void MapConnectionProvidersEndpoints(this IEndpointRouteBuilder app)
+    {
+        app.MapGet("/api/connection-providers", (ConnectionProviderRegistry reg) =>
+            Results.Ok(reg.All.Select(p => new
+            {
+                id = p.Id,
+                displayName = p.DisplayName,
+                configSchema = p.ConfigSchema.Root,
+            })))
+            .RequireAuthorization();
+    }
+}

src/VolcanicCore.Api/Endpoints/NodeTypesEndpoints.cs

@@ -0,0 +1,22 @@
+using VolcanicCore.Api.Registries;
+
+namespace VolcanicCore.Api.Endpoints;
+
+public static class NodeTypesEndpoints
+{
+    public static void MapNodeTypesEndpoints(this IEndpointRouteBuilder app)
+    {
+        app.MapGet("/api/node-types", (NodeRegistry reg) =>
+            Results.Ok(reg.All.Select(n => new
+            {
+                id = n.Id,
+                displayName = n.DisplayName,
+                category = n.Category.ToString(),
+                inputCount = n.InputCount,
+                outputCount = n.OutputCount,
+                connectionProviderId = n.ConnectionProviderId,
+                configSchema = n.ConfigSchema.Root,
+            })))
+            .RequireAuthorization();
+    }
+}

src/VolcanicCore.Api/Program.cs

@@ -91,6 +91,8 @@ using (var scope = app.Services.CreateScope())
 app.UseAuthentication();
 app.UseAuthorization();
 app.MapSessionEndpoints();
+app.MapNodeTypesEndpoints();
+app.MapConnectionProvidersEndpoints();
 
 app.MapGet("/api/health", () => Results.Ok(new { ok = true }));
 app.Run();