Reorganise by feature, rename to Novelly, add Aspire and a pre-push hook

The layered split into Domain/Application/Infrastructure/Api was forcing
organisation by layer: adding one capability meant touching four projects and
four folders that each held a slice of it. Those four projects are now one
feature-organised Novelly.Api, where each folder — Projects, Characters,
Chapters, Beats, Scenes, Tags, Agent — holds its entity, DTOs, service and
endpoints together. Common/ holds what genuinely crosses features (the patch
semantics, the two exception types, DraftStatus) and Data/ holds the DbContext
and migrations.

Six .NET projects become five: the three layer projects are gone, and
Novelly.AppHost and Novelly.ServiceDefaults are new.

- Namespaces move from NovelSoftware.* to Novelly.*, including the entity type
  names recorded in the EF model snapshots. The migration ids are untouched, so
  an existing novel.db still migrates cleanly — verified against a fresh file.
- Aspire orchestration mirrors the mic-check setup: the AppHost starts the API
  on :5080 and the Vite dev server on :5173, and the API picks up OpenTelemetry,
  health checks and service discovery from ServiceDefaults. /health and /alive
  now answer in development.
- A Husky pre-push hook runs scripts/ci/prepush.sh: build, test, then a web
  build. The scripts are plain bash so CI can run the same steps.
- The MCP server's env var is now NOVELLY_API_URL.

Verified beyond the build: 44 tests pass, the web client builds, the API was
exercised over curl (project/chapter/beat/tag round trip, tag cross-reference,
503 on the agent without a key while conversation listing still returns 200),
the MCP server was driven over stdio JSON-RPC (26 tools, errors still surface
the API's own message rather than being flattened), and the AppHost was run to
confirm both resources come up and Vite proxies /api through to the API.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S56bfZMGe1hnhpWP4CjjNw

src/Novelly.AppHost/AppHost.cs

@@ -0,0 +1,15 @@
+var builder = DistributedApplication.CreateBuilder(args);
+
+// Port 5080 is pinned to match src/Novelly.Web's Vite proxy default and the curl-based
+// smoke checks in CLAUDE.md, so the API sits at the same address whether it is started
+// on its own with `dotnet run` or through this AppHost.
+var api = builder.AddProject<Projects.Novelly_Api>("api")
+    .WithHttpEndpoint(port: 5080, name: "http");
+
+builder.AddViteApp("web", "../Novelly.Web", "dev")
+    .WithReference(api)
+    .WaitFor(api)
+    .WithHttpEndpoint(port: 5173, name: "http")
+    .WithExternalHttpEndpoints();
+
+builder.Build().Run();

src/Novelly.AppHost/Novelly.AppHost.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Aspire.AppHost.Sdk/13.4.6">
+
+  <ItemGroup>
+    <ProjectReference Include="..\Novelly.Api\Novelly.Api.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Aspire.Hosting.JavaScript" Version="13.4.6" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <LangVersion>latest</LangVersion>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <UserSecretsId>4f9d2a13-6c85-4b0e-9a7c-2d3f18b6e0c4</UserSecretsId>
+  </PropertyGroup>
+
+</Project>

src/Novelly.AppHost/Properties/launchSettings.json

@@ -0,0 +1,29 @@
+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:17244;http://localhost:15050",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "DOTNET_ENVIRONMENT": "Development",
+        "ASPIRE_DASHBOARD_OTLP_ENDPOINT_URL": "https://localhost:21229",
+        "ASPIRE_RESOURCE_SERVICE_ENDPOINT_URL": "https://localhost:22051"
+      }
+    },
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "http://localhost:15050",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "DOTNET_ENVIRONMENT": "Development",
+        "ASPIRE_DASHBOARD_OTLP_ENDPOINT_URL": "http://localhost:19033",
+        "ASPIRE_RESOURCE_SERVICE_ENDPOINT_URL": "http://localhost:20209"
+      }
+    }
+  }
+}

src/Novelly.AppHost/appsettings.Development.json

@@ -0,0 +1,16 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "Dashboard": {
+    "Frontend": {
+      "AuthMode": "Unsecured"
+    },
+    "Otlp": {
+      "AuthMode": "Unsecured"
+    }
+  }
+}

src/Novelly.AppHost/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning",
+      "Aspire.Hosting.Dcp": "Warning"
+    }
+  }
+}

src/Novelly.AppHost/aspire.config.json

@@ -0,0 +1,5 @@
+{
+  "appHost": {
+    "path": "Novelly.AppHost.csproj"
+  }
+}