fix(plugins): stop listing every command and panel on cards and menus

Marketplace cards keep launcher commands only. The toolbar menu keeps
editor commands and dashboard panels, and drops workflow dialogs plus
commands that only open a dashboard already in the menu.

docs/plugin-development.md

@@ -153,6 +153,32 @@ export default definePlugin({
 
 Every registration returns a disposer. The host also disposes registered commands and events automatically when a plugin is disabled.
 
+Commands appear on the plugin marketplace card by default. Set `listed: false` for editor-context or secondary commands that belong in the plugin toolbar menu instead of the install card:
+
+```js
+context.commands.register({
+  id: "insert-task",
+  title: "Insert task at cursor",
+  listed: false,
+  async run() {
+    await context.editor.insertAtCursor("- [ ] ");
+  }
+});
+```
+
+Workflow and preview panels are also omitted from that card. Open them from a command, the toolbar menu, or another panel.
+
+The plugin toolbar menu lists editor commands and dashboard or onboarding panels. It omits workflow or preview dialogs, and omits a command that only opens a dashboard already in the menu. Set `menu: false` when a command should appear on the marketplace card but not next to its dashboard panel:
+
+```js
+context.commands.register({
+  id: "open-dashboard",
+  title: "Open task dashboard",
+  menu: false,
+  run: () => context.ui.panels.open("tasks"),
+});
+```
+
 ## Schedules API
 
 Desktop plugins can persistently schedule one of their own registered commands. Register the command first, then use a stable plugin-local key with `upsert()`: