OK. I want to go over what happened in class yesterday to avoid a repeat of s...

I'll read BUGS.md and pull the production logs in parallel to understand what happened yesterday.

Let me check the logs script and pull historical logs from yesterday's class session.

I can see the foreign key errors in the logs - the session ID bug was definitely causing issues. Let me get more logs and explore the relevant code for the outstanding bugs.

Excellent exploration results. Let me read the key files to understand the remaining issues and then design a plan.

Let me check the current state of the fixes and understand if the deployments have happened.

Good - the fixes are committed but need to be deployed. Let me now launch a Plan agent to design solutions for the remaining bugs.

Now I have a comprehensive understanding. Let me write the plan file with the findings and recommended fixes.

I've created a plan based on my analysis. I have a few clarifying questions before finalizing:

Got it - the TextSubmission visibility was a potential concern (not observed), and you want me to fix the timer too. What would you like to clarify about the stop/save session feature?

Ah, I understand now - you didn't finish the activity yesterday and need to resume it tomorrow rather than starting fresh. So you need:

1. A way to stop/save yesterday's session state
2. A way to resume that same session tomorrow

Let me explore how activity sessions work to understand what's needed for this.

This is helpful. The good news is your session data from Tuesday is preserved in the database - sessions are keyed by (meetingSlug, semester), not by date. The main gaps are:

1. No "Resume existing session" UI option (only "Start new session")
2. The /start endpoint rejects if a session already exists

Let me update the plan to include this as a priority fix.

Got it - you'll split the activity into two separate parts, so you just need a way to cleanly stop/end a session (not resume it later). That's much simpler.

Let me update the plan with this clarification.

The plan is updated. I have one clarifying question about the activity split:

Let me look at the full activity structure to plan the split.

Let me read the full activity to see all the stages.

I see the structure. The activity has 6 stages:

1. The Confabulator (10m) - ✅ Completed Tuesday
2. The Yes-Man (10m) - ✅ Completed Tuesday
3. The Forgetter (10m)
4. The Overconfident (10m)
5. Challenge Items (30m)
6. Synthesis (10m)

Students got through 1-2 on Tuesday. How would you like to split it?

Given that students spent ~30 minutes per stage (3x the estimate), here's my thinking:

Part 1 (Tuesday): Confabulator + Yes-Man + Synthesis

• ~60 minutes of actual activity + short synthesis wrap-up
• Synthesis can be abbreviated since they'll do a fuller one tomorrow

Part 2 (Wednesday): Forgetter + Overconfident + Challenge Items + Synthesis

• If 30 min/stage holds: Forgetter (30m) + Overconfident (30m) = 60 min already
• Challenge Items might not fit in a single class

My recommendation:

• Split Challenge Items - put 2 challenges in Part 2 (Jagged Edge + Self-Saboteur), and save the other 2 (Identity Crisis + Ouroboros) for a potential Part 3 or as optional homework
• Keep each synthesis focused on that day's discoveries
• Don't duplicate - each challenge is unique enough that it's better to have students go deeper on fewer

Does that work, or would you prefer a different split of the Challenge Items?

Now let me also update the implementation order to reflect the correct sequencing, and verify where meetings get registered.

Got it - today is Thursday Jan 29, class is today. Let me fix the plan.

Now fix the content split dates:

Good. Let me do a final read of the plan to make sure it's complete and correct.

The plan is complete. To summarize what needs to happen before today's class:

1. Fix timer bug - 2 files, small change each
2. Add Stop Session button - schema field + API endpoint + UI button (to close Tuesday's session)
3. Create Part 2 activity file - new MDX with Forgetter, Overconfident, Challenge Items (Jagged Edge + Self-Saboteur), Synthesis
4. Trim Part 1 activity file - remove moved stages, add abbreviated synthesis
5. Deploy everything

Let me check if the session ID fix is live in production.

No foreign key errors in recent logs - the fix appears to be live. Let me update the plan to mark those as done and focus on today's work.

Good. Those are off the plate. The remaining work for today is:

1. Fix timer bug (2 small code changes)
2. Add Stop Session feature (schema + API + UI)
3. Split the activity content (edit Part 1, create Part 2)
4. Deploy

Anything else you want to adjust before I finalize the plan?

Confirmed - the instructor view counts individual submissions, not groups. The data is there (groupId and groupMembers are already in the API response), but the frontend doesn't aggregate by group. Let me add this to the plan and BUGS.md.

Now update the implementation order and renumber the deferred items:

Updated. The plan now has 4 items to implement before today's class:

1. Timer bug fix - stop interval for past stages (2 files, small changes)
2. Group submission counts - show "X of Y groups submitted" in instructor view (1 file, frontend-only since API already has the data)
3. Stop Session button - schema + API + UI to cleanly end a session
4. Activity content split - trim Part 1, create Part 2 MDX

Plus updating BUGS.md and deploying. Anything else to add or adjust?