Add after-action report

lectures/flipped/L34.md

@@ -77,3 +77,8 @@ wildlife photography.
 We went through all the AWS questions (which aren't really discussed in the
 notes). They are a good set of topics for discussion. Feels like a liberal arts
 classroom.
+
+# After-action report, huanyi, 1Apr24
+
+We went through some of the questions. Maybe it was like 25 minutes on this
+topic?

lectures/flipped/L35.md

@@ -45,3 +45,10 @@ Did the naming exercise. Did not do the other exercises. Instead, we
 collectively talked through an example of writing an incident report (fake,
 "patricklam.ca is down"). That works as an exercise, though maybe one could read
 an existing incident report also. Or have a better scenario.
+
+# After-action report, huanyi, 1Apr24 & 5Apr24
+
+The xz incident can be extended further I think. On Apr 5th, we tried both
+GitHub Action and GitLab CI/CD. UW GitLab needs us to set up a separate runner
+to do jobs. I used my own laptop for it. Its tutorial was not very
+straightforward.