feat(plugin): add marketplace manifest so the plugin is installable (#106)

* feat(plugin): add marketplace manifest so the plugin is installable

The plugin was only loadable via `--plugin-dir` (local) — `/plugin install
github.com/...` (as the README claimed) doesn't work without a marketplace.
Add `.claude-plugin/marketplace.json` at the repo root registering the plugin
(source: ./plugin), so it's installable by anyone.

Install flow (verified against the CLI — validate ✔, local `marketplace add ./`
resolved the ./plugin source and listed it):
  /plugin marketplace add nativeapptemplate/nativeapptemplate-agent
  /plugin install nativeapptemplate-agent@nativeapptemplate

Fix the now-correct install instructions in plugin/README.md (was the bogus
`/plugin install github.com/...`) and add the marketplace flow to the root README.
Marketplace name `nativeapptemplate`; plugin name `nativeapptemplate-agent`
(matches plugin.json, so skills stay `/nativeapptemplate-agent:*`).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(plugin): attribution → "Daisuke Adachi" (match package.json + LICENSE)

The marketplace owner and plugin.json author read bare "Daisuke"; the canonical
attribution everywhere else (package.json author, LICENSE copyright) is the full
name "Daisuke Adachi". Align both, since marketplace owner is public catalog
metadata shown when users add the marketplace.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore(plugin): marketplace owner → NativeAppTemplate org (+ url)

owner identifies the catalog/distribution, so use the org/brand (with its GitHub
URL) rather than a personal name — reads as the official marketplace and scales
to more plugins/maintainers. plugin.json author stays "Daisuke Adachi" (the
person who wrote it; matches package.json + LICENSE).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: dadachi

.claude-plugin/marketplace.json

@@ -0,0 +1,15 @@
+{
+  "name": "nativeapptemplate",
+  "owner": {
+    "name": "NativeAppTemplate",
+    "url": "https://github.com/nativeapptemplate"
+  },
+  "description": "NativeAppTemplate Agent — generate validated three-platform SaaS apps (Rails 8.1 API + SwiftUI iOS + Jetpack Compose Android) from a natural-language spec.",
+  "plugins": [
+    {
+      "name": "nativeapptemplate-agent",
+      "source": "./plugin",
+      "description": "Generate, validate, and walk three-platform apps from inside Claude Code — generate-app + walk-app skills, bundling the generator MCP server + mobile-mcp."
+    }
+  ]
+}

README.md

@@ -126,7 +126,14 @@ tree ./out/clinic-queue/
 # └── validation-report.html   ← self-contained visual report (open in a browser)
 ```
 
-The same generator also ships as an MCP server — `npx -y -p nativeapptemplate-agent nativeapptemplate-agent-mcp` exposes a `generate_app` tool, so any MCP-capable assistant (Claude Code, Cursor, Cline, Goose) can invoke it without leaving the editor. And a **Claude Code plugin** ships in [`plugin/`](./plugin/) — `claude --plugin-dir ./plugin` loads two skills: `/nativeapptemplate-agent:generate-app` (generate → validate → explain) and `/nativeapptemplate-agent:walk-app` (launch the app on a simulator/emulator and walk its UI via `mobile-mcp`, screenshots inline). See [`plugin/README.md`](./plugin/README.md).
+The same generator also ships as an MCP server — `npx -y -p nativeapptemplate-agent nativeapptemplate-agent-mcp` exposes a `generate_app` tool, so any MCP-capable assistant (Claude Code, Cursor, Cline, Goose) can invoke it without leaving the editor. And a **Claude Code plugin** ships in [`plugin/`](./plugin/) with two skills: `/nativeapptemplate-agent:generate-app` (generate → validate → explain) and `/nativeapptemplate-agent:walk-app` (launch the app on a simulator/emulator and walk its UI via `mobile-mcp`, screenshots inline). Install it via the bundled marketplace:
+
+```bash
+/plugin marketplace add nativeapptemplate/nativeapptemplate-agent
+/plugin install nativeapptemplate-agent@nativeapptemplate
+```
+
+…or load it locally with `claude --plugin-dir ./plugin`. See [`plugin/README.md`](./plugin/README.md).
 
 ## Requirements
 

plugin/.claude-plugin/plugin.json

@@ -2,7 +2,7 @@
   "name": "nativeapptemplate-agent",
   "version": "0.2.0",
   "description": "Generate a validated three-platform SaaS app (Rails 8.1 API + SwiftUI iOS + Jetpack Compose Android) from a one-sentence spec, explain the validation report, and walk the running app on a simulator/emulator via mobile-mcp — without leaving Claude Code.",
-  "author": { "name": "Daisuke" },
+  "author": { "name": "Daisuke Adachi" },
   "homepage": "https://github.com/nativeapptemplate/nativeapptemplate-agent",
   "repository": "https://github.com/nativeapptemplate/nativeapptemplate-agent",
   "license": "MIT"

plugin/README.md

@@ -72,11 +72,18 @@ Then in the session:
 After editing plugin files, run `/reload-plugins` to pick up changes. Confirm the
 skill is loaded via `/help` and the MCP server via `/mcp`.
 
-## Install from git
+## Install from the marketplace
+
+The repo ships a marketplace manifest (`.claude-plugin/marketplace.json`) that points at
+this `plugin/` directory. Add the marketplace, then install:
 
 ```
-/plugin install github.com/nativeapptemplate/nativeapptemplate-agent
+/plugin marketplace add nativeapptemplate/nativeapptemplate-agent
+/plugin install nativeapptemplate-agent@nativeapptemplate
 ```
 
-> Note: the plugin lives in the `plugin/` subdirectory of the repo. If installing
-> by path, point at `plugin/`, not the repo root.
+`nativeapptemplate` is the marketplace name; `nativeapptemplate-agent` is the plugin. Once
+installed, the skills are available as `/nativeapptemplate-agent:generate-app` and
+`/nativeapptemplate-agent:walk-app` (and `/mcp` shows both bundled servers). The CLI forms
+are `claude plugin marketplace add nativeapptemplate/nativeapptemplate-agent` and
+`claude plugin install nativeapptemplate-agent@nativeapptemplate`.