Explain an unfamiliar codebase

I am new to this codebase and need to {{task}}.

Here is the relevant code:
{{code}}

Explain:
1. What this code is responsible for, in two sentences.
2. The control flow for the path relevant to my task.
3. The key files/functions I will likely need to touch and why.
4. Any landmines (shared state, side effects, implicit contracts) I should watch for.
Keep it concrete and point to specific names.

Variables to customize

{{task}}

What you are trying to do

{{code}}

Entry point or key files

Good follow-ups

• Draft a step-by-step plan to make the change safely.
• What is the riskiest assumption in this code?

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