docs(mkdocs): offline install, stackbar, border style

docs/common-workflows/stackbar.md

@@ -0,0 +1,23 @@
+# Stackbar
+
+If you would like to add a visual stackbar to show which windows are in a container
+stack ensure the following options are defined in the `komorebi.json` configuration
+file.
+
+```json
+{
+  "stackbar": {
+    "height": 40,
+    "mode": "OnStack",
+    "tabs": {
+      "width": 300,
+      "focused_text": "#00a542",
+      "unfocused_text": "#b3b3b3",
+      "background": "#141414"
+    }
+  }
+}
+```
+
+This feature is not considered stable, and you may encounter visual artifacts
+from time to time.