docs: fiddle with README; just add "just" everywhere

README.md

@@ -3,12 +3,14 @@
 This is a little TUI based on [Textual] for entering new Teilchen and for
 searching for existing Teilchen. Data is kept in a sqlite database.
 
-It is not yet usable.
+It is not yet usable. It has tests.
 
 ## Running tests
 
 ```sh
 uv run pytest tests.py
+# or if you have just
+just test
 ```
 
 ## Observing the app's console
@@ -25,15 +27,18 @@ Since we use uv, the incantation is a bit different from the [official documenat
 
 In one terminal:
 
-```shell
+```sh
 uv run textual console
+# or if you have just
+just console
 ```
 
 And in the other:
 
-```shell
-#  run,textual,run! ;)
+```sh
 uv run textual run --dev src/teilchensammler_cli/__init__.py
+# or if you have just
+just run-console
 ```
 
 ## Developing