refactor: Group state setup in startup event

capella_model_explorer/main.py

@@ -77,6 +77,21 @@ def _reset_state() -> None:
     state.template = None
 
 
+def _app_startup() -> None:
+    try:
+        MODEL = os.environ["CME_MODEL"]
+    except KeyError as err:
+        raise SystemExit("CME_MODEL environment variable is not set") from err
+
+    try:
+        _1 = state.model
+    except AttributeError:
+        state.model = capellambse.loadcli(MODEL)
+    templates.load()
+    state.jinja_env.finalize = _finalize
+    state.jinja_env.filters["make_href"] = _make_href_filter
+
+
 app = (
     fh.FastHTMLWithLiveReload(**c.FASTHTML_APP_CONFIG)
     if c.LIVE_MODE
@@ -86,20 +101,6 @@ def _reset_state() -> None:
 app.static_route_exts(f"{c.ROUTE_PREFIX}/static", "./static")
 
 
-try:
-    MODEL = os.environ["CME_MODEL"]
-except KeyError as err:
-    raise SystemExit("CME_MODEL environment variable is not set") from err
-
-try:
-    _1 = state.model
-except AttributeError:
-    state.model = capellambse.loadcli(MODEL)
-
-state.jinja_env.finalize = _finalize
-state.jinja_env.filters["make_href"] = _make_href_filter
-
-
 @app.middleware("http")
 async def update_last_interaction_time(request: fh.Request, call_next):
     if request.url.path not in ("/metrics", "/favicon.ico"):
@@ -327,5 +328,5 @@ def render_template(template_id: str, model_element_uuid: str = "") -> t.Any:
     )
 
 
-app.on_event("startup")(lambda: templates.load())
+app.on_event("startup")(lambda: _app_startup())
 ar.to_app(app)