Create an app

nuvyn init <folder_name> always creates a new folder. There is no --here / --force. If that name already exists, init prints an error and exits 1. The existing tree is left untouched. Pick another name, or delete a leftover failed scaffold yourself, then retry. For an app that already exists, use `nuvyn adopt`.

nuvyn init HarborDesk
nuvyn init HarborDesk --agent cursor
nuvyn init HarborDesk --agent copilot
nuvyn init HarborDesk --agent claude
nuvyn init HarborDesk --agent gemini
nuvyn init HarborDesk --agent codex
nuvyn init HarborDesk --agent windsurf

Omit --agent and the CLI shows a searchable picker of Spec Kit coding agents (cursor (Cursor), agy (Antigravity), …). Pass --agent cursor-agent if you already use that Spec Kit key.

1. Copies the embedded host from payload/host/ (MVVMExpress + Lumina UIKit — not stock Entry / Button pages).
2. Adds the default Nuvyntra packages from nuget.org at the latest stable versions.
3. Writes .nuvyn/ (constitution, templates, reference).
4. Installs slash commands for the agent you picked.
5. Writes a project README with the slash chain.

HarborDesk/
├── HarborDesk.sln
├── HarborDesk/                      # MAUI app
│   ├── MauiProgram.cs
│   ├── Pages/MainPage.xaml
│   └── Resources/Images/nuvyntra.png
├── HarborDesk.Core/                 # ViewModels
├── HarborDesk.Tests/
├── .nuvyn/
│   ├── constitution.md
│   ├── init-options.json
│   ├── templates/
│   └── reference/
├── specs/                           # empty until /nuvyn.specify
├── .cursor/skills/nuvyn-*/          # when --agent cursor
└── README.md

Copilot writes .github/skills/. Claude writes .claude/commands/. Gemini writes .gemini/commands/. Codex / Antigravity write .agents/skills/. Other agents use that tool's usual project folder (Goose recipes, Kiro prompts, Windsurf workflows, …).

Do not add LocalStore, NuvexaDB, AppLock, or any other catalog package until you ask for that capability. /nuvyn.plan then picks the smallest MauiEssentials fit.

cd HarborDesk
dotnet restore
dotnet build
dotnet build HarborDesk/HarborDesk.csproj -f net10.0-android

nuvyn init / nuvyn adopt / nuvyn check already run maui-dev doctor --path when Plugin.Maui.MauiDev.Cli is installed. They do not forward --no-update-check (MauiDev 1.2.1 treats that as an unknown option; 1.2.2 accepts it). If doctor exits non-zero, the report is printed under the warning. If maui-dev is missing:

dotnet tool install -g Plugin.Maui.MauiDev.Cli --source https://api.nuget.org/v3/index.json
maui-dev doctor