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.Mcp/Tools/ProjectTools.cs

@@ -0,0 +1,53 @@
+using System.ComponentModel;
+using ModelContextProtocol.Protocol;
+using ModelContextProtocol.Server;
+
+namespace Novelly.Mcp.Tools;
+
+[McpServerToolType]
+public static class ProjectTools
+{
+    [McpServerTool(Name = "list_projects")]
+    [Description("List every novel project, with counts of characters, chapters and drafted words. "
+                 + "Start here to find the project id everything else needs.")]
+    public static Task<CallToolResult> ListProjects(NovelApiClient api, CancellationToken ct) =>
+        api.GetAsync("/api/projects", ct);
+
+    [McpServerTool(Name = "get_project_brief")]
+    [Description("Read a project's title, author, genre, logline, synopsis, notes and word-count target.")]
+    public static Task<CallToolResult> GetProject(
+        NovelApiClient api,
+        [Description("The project's id.")] Guid projectId,
+        CancellationToken ct) =>
+        api.GetAsync($"/api/projects/{projectId}", ct);
+
+    [McpServerTool(Name = "create_project")]
+    [Description("Create a new novel project.")]
+    public static Task<CallToolResult> CreateProject(
+        NovelApiClient api,
+        [Description("Working title.")] string title,
+        CancellationToken ct,
+        [Description("Author name.")] string? author = null,
+        [Description("Genre or category.")] string? genre = null,
+        [Description("One-sentence pitch.")] string? logline = null,
+        [Description("Paragraph-length summary of the whole book.")] string? synopsis = null,
+        [Description("Target manuscript length in words.")] int? targetWordCount = null) =>
+        api.PostAsync("/api/projects", new { title, author, genre, logline, synopsis, targetWordCount }, ct);
+
+    [McpServerTool(Name = "update_project_brief")]
+    [Description("Revise a project's top-level fields. Only the fields you supply change; "
+                 + "pass an empty string to clear one.")]
+    public static Task<CallToolResult> UpdateProject(
+        NovelApiClient api,
+        [Description("The project's id.")] Guid projectId,
+        CancellationToken ct,
+        [Description("New title.")] string? title = null,
+        [Description("Author name.")] string? author = null,
+        [Description("Genre or category.")] string? genre = null,
+        [Description("One-sentence pitch.")] string? logline = null,
+        [Description("Paragraph-length summary of the whole book.")] string? synopsis = null,
+        [Description("Free-form notes on theme, tone, comparable titles.")] string? notes = null,
+        [Description("Target manuscript length in words.")] int? targetWordCount = null) =>
+        api.PatchAsync($"/api/projects/{projectId}",
+            new { title, author, genre, logline, synopsis, notes, targetWordCount }, ct);
+}