fix(sentinel-graph): repair docs build + typecheck

- Add empty 'outputs' and 'execution_count' to two code cells in
  sentinel_graph_examples.ipynb (cells 7 and 9). nbformat 4 requires
  both keys on every code cell; nbsphinx errored with
  AttributeError: outputs during RTD's sphinx-build, killing the docs
  build after the pytz import was resolved upstream.
- Add azure.core.* and azure.identity to mypy.ini ignore_missing_imports.
  Mirrors the existing azure.kusto.* entry. Without these, mypy 1.20
  flags the 'azure.core.credentials' and 'azure.identity' imports in
  sentinel_graph.py / sentinel_graph_types.py as missing stubs, failing
  python-lint-types CI on every Python version.

Verified locally: ruff/mypy/pytest all green; nbformat.validate passes;
'import graphistry' loads cleanly.

Author: SinsBre

demos/demos_databases_apis/microsoft/sentinel/sentinel_graph_examples.ipynb

@@ -53,17 +53,17 @@
     "    # personal_key_secret='YOUR_KEY_SECRET'\n",
     ")\n",
     "\n",
-    "print(\"✓ Graphistry configured\")"
+    "print(\"\u2713 Graphistry configured\")"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
-   "source": "## Discover Available Graph Instances\n\nUse `sentinel_graph_list()` to see what graph instances are available in your tenant. You only need a placeholder `graph_instance` for this call — the value is not used by the list endpoint."
+   "source": "## Discover Available Graph Instances\n\nUse `sentinel_graph_list()` to see what graph instances are available in your tenant. You only need a placeholder `graph_instance` for this call \u2014 the value is not used by the list endpoint."
   },
   {
    "cell_type": "code",
-   "source": "g = graphistry.configure_sentinel_graph(\n    graph_instance=graph_instance_name,\n    credential=credential,\n    response_formats=[\"Graph\"]  # default; use [\"Table\", \"Graph\"] to also get raw tabular data\n)\n\nprint(f\"✓ Sentinel Graph configured for instance: {graph_instance_name}\")",
+   "source": "g = graphistry.configure_sentinel_graph(\n    graph_instance=graph_instance_name,\n    credential=credential,\n    response_formats=[\"Graph\"]  # default; use [\"Table\", \"Graph\"] to also get raw tabular data\n)\n\nprint(f\"\u2713 Sentinel Graph configured for instance: {graph_instance_name}\")",
    "metadata": {},
    "execution_count": null,
    "outputs": []
@@ -83,13 +83,15 @@
     "    credential=credential\n",
     ")\n",
     "\n",
-    "print(\"✓ Sentinel Graph configured\")"
+    "print(\"\u2713 Sentinel Graph configured\")"
    ]
   },
   {
    "cell_type": "code",
    "metadata": {},
-   "source": "query = \"\"\"\nMATCH (n)-[e]->(m)\nRETURN *\nLIMIT 50\n\"\"\"\n\nviz = g.sentinel_graph(query)\nprint(f\"Query returned {len(viz._nodes)} nodes and {len(viz._edges)} edges\")\n\nviz.plot()"
+   "source": "query = \"\"\"\nMATCH (n)-[e]->(m)\nRETURN *\nLIMIT 50\n\"\"\"\n\nviz = g.sentinel_graph(query)\nprint(f\"Query returned {len(viz._nodes)} nodes and {len(viz._edges)} edges\")\n\nviz.plot()",
+   "outputs": [],
+   "execution_count": null
   },
   {
    "cell_type": "code",
@@ -113,7 +115,9 @@
   {
    "cell_type": "code",
    "metadata": {},
-   "source": "print(\"=\" * 80)\nprint(\"NODES\")\nprint(\"=\" * 80)\nprint(f\"Shape: {viz._nodes.shape}\")\nprint(f\"Columns: {list(viz._nodes.columns)}\")\nprint(\"\\nSample nodes:\")\ndisplay(viz._nodes.head(3))\n\nprint(\"\\n\" + \"=\" * 80)\nprint(\"EDGES\")\nprint(\"=\" * 80)\nprint(f\"Shape: {viz._edges.shape}\")\nprint(f\"Columns: {list(viz._edges.columns)}\")\nprint(\"\\nSample edges:\")\ndisplay(viz._edges.head(3))"
+   "source": "print(\"=\" * 80)\nprint(\"NODES\")\nprint(\"=\" * 80)\nprint(f\"Shape: {viz._nodes.shape}\")\nprint(f\"Columns: {list(viz._nodes.columns)}\")\nprint(\"\\nSample nodes:\")\ndisplay(viz._nodes.head(3))\n\nprint(\"\\n\" + \"=\" * 80)\nprint(\"EDGES\")\nprint(\"=\" * 80)\nprint(f\"Shape: {viz._edges.shape}\")\nprint(f\"Columns: {list(viz._edges.columns)}\")\nprint(\"\\nSample edges:\")\ndisplay(viz._edges.head(3))",
+   "outputs": [],
+   "execution_count": null
   },
   {
    "cell_type": "code",
@@ -301,7 +305,7 @@
    "outputs": [],
    "source": [
     "g.sentinel_graph_close()\n",
-    "print(\"✓ Sentinel Graph connection closed\")"
+    "print(\"\u2713 Sentinel Graph connection closed\")"
    ]
   }
  ],
@@ -326,4 +330,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 4
-}
+}

mypy.ini

@@ -115,6 +115,12 @@ ignore_missing_imports = True
 [mypy-azure.kusto.*]
 ignore_missing_imports = True
 
+[mypy-azure.core.*]
+ignore_missing_imports = True
+
+[mypy-azure.identity]
+ignore_missing_imports = True
+
 [mypy-requests.*]
 ignore_missing_imports = True