Add GitHub Models AI backend script (via Copilot subscription) (#280)

* Add GitHub Models AI backend script (via Copilot subscription)

* Minor fix to the description

Author: nagelp

ai-github-copilot-backend/ai-github-copilot-backend.qml

@@ -0,0 +1,70 @@
+import QtQml 2.0
+import QOwnNotesTypes 1.0
+
+/**
+ * This script adds GitHub Models to QOwnNotes, allowing you to use AI models
+ * via your GitHub Copilot subscription through the GitHub Models inference API.
+ *
+ * Setup:
+ * 1. Install this script in QOwnNotes (Settings > Scripting)
+ * 2. Go to the script settings and enter your GitHub Personal Access Token
+ *    (create one at https://github.com/settings/tokens — fine-grained
+ *     with "Models: Read" permission, or a classic token)
+ * 3. Once the script is active, you can choose the "GitHub" backend and
+ *    your preferred model
+ *
+ */
+Script {
+    property string githubToken;
+
+    property variant settingsVariables: [
+        {
+            "identifier": "githubToken",
+            "name": "GitHub Personal Access Token",
+            "description": "Enter your GitHub PAT (create at https://github.com/settings/tokens).\nFine-grained: enable 'Models: Read' permission.\nClassic: the 'models' scope is needed.",
+            "type": "string-secret",
+            "default": "",
+        }
+    ];
+
+    function openAiBackendsHook() {
+        if (!githubToken || githubToken === "") {
+            return [];
+        }
+
+        return [
+            {
+                "id": "github-models",
+                "name": "GitHub",
+                "baseUrl": "https://models.inference.ai.azure.com/chat/completions",
+                "apiKey": githubToken,
+                "models": [
+                    "gpt-4o",
+                    "gpt-4o-mini",
+                    "gpt-4.1",
+                    "gpt-4.1-mini",
+                    "gpt-4.1-nano",
+                    "gpt-5",
+                    "gpt-5-mini",
+                    "gpt-5-nano",
+                    "o4-mini",
+                    "o3",
+                    "o3-mini",
+                    "o1",
+                    "o1-mini",
+                    "deepseek-r1",
+                    "deepseek-r1-0528",
+                    "deepseek-v3-0324",
+                    "llama-4-scout-17b-16e-instruct",
+                    "llama-4-maverick-17b-128e-instruct-fp8",
+                    "llama-3.3-70b-instruct",
+                    "grok-3",
+                    "grok-3-mini",
+                    "mistral-small-2503",
+                    "phi-4",
+                    "phi-4-reasoning",
+                ],
+            }
+        ];
+    }
+}

ai-github-copilot-backend/info.json

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+{
+  "name": "GitHub Models AI backend (via Copilot subscription)",
+  "identifier": "ai-github-copilot-backend",
+  "script": "ai-github-copilot-backend.qml",
+  "version": "0.0.1",
+  "minAppVersion": "24.6.3",
+  "authors": ["@nagelp"],
+  "platforms": ["linux", "macos", "windows"],
+  "description": "This script adds a <a href=\"https://github.com/marketplace/models\">GitHub</a> AI backend to QOwnNotes, allowing you to use AI models via your GitHub Copilot subscription through the GitHub Models inference API. You'll need a GitHub Personal Access Token (create at <a href=\"https://github.com/settings/tokens\">GitHub Settings</a>) with 'Models: Read' permission."
+}