add dms-plugin-dev agent skill for plugin development (#2394)

.agents/skills/dms-plugin-dev/assets/templates/launcher/Launcher.qml

@@ -0,0 +1,59 @@
+import QtQuick
+import Quickshell
+import qs.Services
+
+Item {
+    id: root
+
+    property var pluginService: null
+    property string trigger: "#"
+
+    signal itemsChanged()
+
+    // TODO: Define your items
+    property var allItems: [
+        {
+            name: "Example Item",
+            icon: "material:star",
+            comment: "An example launcher item",
+            action: "toast:Hello from my launcher!",
+            categories: ["MyLauncher"]
+        }
+    ]
+
+    function getItems(query) {
+        if (!query || query.length === 0) return allItems
+
+        var q = query.toLowerCase()
+        return allItems.filter(function(item) {
+            return item.name.toLowerCase().includes(q) ||
+                   item.comment.toLowerCase().includes(q)
+        })
+    }
+
+    function executeItem(item) {
+        var actionParts = item.action.split(":")
+        var actionType = actionParts[0]
+        var actionData = actionParts.slice(1).join(":")
+
+        switch (actionType) {
+            case "toast":
+                if (typeof ToastService !== "undefined")
+                    ToastService.showInfo(actionData)
+                break
+            case "copy":
+                Quickshell.execDetached(["dms", "cl", "copy", actionData])
+                if (typeof ToastService !== "undefined")
+                    ToastService.showInfo("Copied to clipboard")
+                break
+            default:
+                console.warn("Unknown action type:", actionType)
+        }
+    }
+
+    Component.onCompleted: {
+        if (pluginService) {
+            trigger = pluginService.loadPluginData("myLauncher", "trigger", "#")
+        }
+    }
+}

.agents/skills/dms-plugin-dev/assets/templates/launcher/Settings.qml

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+import QtQuick
+import qs.Common
+import qs.Widgets
+import qs.Modules.Plugins
+
+PluginSettings {
+    pluginId: "myLauncher"
+
+    StringSetting {
+        settingKey: "trigger"
+        label: "Trigger"
+        description: "Type this prefix in the launcher to activate the plugin"
+        placeholder: "#"
+        defaultValue: "#"
+    }
+
+    ToggleSetting {
+        settingKey: "noTrigger"
+        label: "Always Visible"
+        description: "Show items alongside regular apps without needing a trigger"
+        defaultValue: false
+    }
+}

.agents/skills/dms-plugin-dev/assets/templates/launcher/plugin.json

@@ -0,0 +1,14 @@
+{
+    "id": "myLauncher",
+    "name": "My Launcher",
+    "description": "Custom launcher plugin with searchable items",
+    "version": "1.0.0",
+    "author": "Your Name",
+    "type": "launcher",
+    "capabilities": ["launcher"],
+    "component": "./Launcher.qml",
+    "trigger": "#",
+    "icon": "search",
+    "settings": "./Settings.qml",
+    "permissions": ["settings_read", "settings_write"]
+}