generate summary based on navigation entries

requirements.txt

@@ -7,3 +7,4 @@ requests
 aiohttp
 zarr
 matplotlib
+pyyaml

scripts/prepare.py

-import glob
 import logging
+import yaml
 
 logging.basicConfig()
 logging.getLogger().setLevel(logging.DEBUG)
@@ -24,7 +24,14 @@ title: "Lecture Overview"
 
 
 def generate_summary():
-    files = sorted(glob.glob("lectures/[01]*/slides.qmd"))
+    project_config = yaml.safe_load(open("_quarto.yml"))
+
+    files = [
+        fn
+        for s in project_config["website"]["sidebar"]["contents"]
+        if s.get("section") == "Lectures"
+        for fn in s["contents"] or []
+    ]
 
     all_entries = []
     for x in files: