Phase 0 WP-0.10–0.12: Host skeleton, options classes, sample configs, and execution framework

- WP-0.10: Role-based Host startup (Central=WebApplication, Site=generic Host),
  15 component AddXxx() extension methods, MapCentralUI/MapInboundAPI stubs
- WP-0.11: 12 per-component options classes with config binding
- WP-0.12: Sample appsettings for central and site topologies
- Add execution procedure and checklist template to generate_plans.md
- Add phase-0-checklist.md for execution tracking
- Resolve all 21 open questions from plan generation
- Update IDataConnection with batch ops and IAsyncDisposable
57 tests pass, zero warnings.

src/ScadaLink.InboundAPI/Class1.cs

@@ -1,6 +0,0 @@
-namespace ScadaLink.InboundAPI;
-
-public class Class1
-{
-
-}

src/ScadaLink.InboundAPI/EndpointExtensions.cs

@@ -0,0 +1,12 @@
+using Microsoft.AspNetCore.Routing;
+
+namespace ScadaLink.InboundAPI;
+
+public static class EndpointExtensions
+{
+    public static IEndpointRouteBuilder MapInboundAPI(this IEndpointRouteBuilder endpoints)
+    {
+        // Phase 0: skeleton only
+        return endpoints;
+    }
+}

src/ScadaLink.InboundAPI/InboundApiOptions.cs

@@ -0,0 +1,6 @@
+namespace ScadaLink.InboundAPI;
+
+public class InboundApiOptions
+{
+    public TimeSpan DefaultMethodTimeout { get; set; } = TimeSpan.FromSeconds(30);
+}

src/ScadaLink.InboundAPI/ScadaLink.InboundAPI.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
@@ -7,6 +7,10 @@
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 
+  <ItemGroup>
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="../ScadaLink.Commons/ScadaLink.Commons.csproj" />
   </ItemGroup>

src/ScadaLink.InboundAPI/ServiceCollectionExtensions.cs

@@ -0,0 +1,12 @@
+using Microsoft.Extensions.DependencyInjection;
+
+namespace ScadaLink.InboundAPI;
+
+public static class ServiceCollectionExtensions
+{
+    public static IServiceCollection AddInboundAPI(this IServiceCollection services)
+    {
+        // Phase 0: skeleton only
+        return services;
+    }
+}