docs(dn):Hongtai_10/12/2025 (#411)

Co-authored-by: Noahms12 <[email protected]>

Author: HongtaiDu

src/design_notebooks/2025fall/hd2609.md

@@ -36,3 +36,13 @@ Summary: I do not have much progess this week due to busy assignments and projec
 * Finished lab 3 and almost half of lab 4 this week. There are 0.5 more labs to be done.
 
 Summary: This week is less stressful than last week. I met with team and confirmed that we need to finish all labs this week. I will finish all 4 labs this week and then find meeting time with team for next step.
+
+## Week of October 5th
+
+### Project Work
+
+* Did more Verilog practice questions on the HDLBits. I finished until "Replication" problem. 
+* Finished lab 4.
+
+Summary: Now all labs are finished. For next week, I will find meeting time with team for next step.
+