Limit homepage devlogs and add refresh trigger

tests/test_home_template.py

@@ -0,0 +1,24 @@
+from __future__ import annotations
+
+from pathlib import Path
+import unittest
+
+
+class HomeTemplateTests(unittest.TestCase):
+    def test_recent_activity_adds_only_latest_devlog_from_each_project(self) -> None:
+        site_root = Path(__file__).resolve().parents[1]
+        template = (site_root / "templates" / "home.html").read_text(encoding="utf-8")
+        recent_activity = template.split(
+            '<section class="homepage-panel featured-projects-panel"', 1
+        )[0]
+
+        self.assertIn(
+            "devlog.children.order_by('-date', '-source_commit_time').first()",
+            recent_activity,
+        )
+        self.assertIn("entries.append(latest_devlog_entry)", recent_activity)
+        self.assertNotIn("for entry in devlog.children", recent_activity)
+
+
+if __name__ == "__main__":
+    unittest.main()