Make one-page printable practice sheets for a student's weak topics, with a separate answer key page and no personal data

# Make one-page printable practice sheets, with an answer key on a separate page, for the topics a student is struggling with `student.json` lists a student's grade, the topics they are struggling with and how many problems each sheet needs. `curriculum.json` says, for each topic and grade, what a problem looks like, the allowed number ranges and how answers must be written. `teacher-note.txt` is a note from the class teacher. Everything is synthetic. Rules: - One sheet per topic: write `out/sheets/<topic>.html` for each topic in `student.json` `struggle_topics`, and no other sheets. - Problems: each sheet has exactly `problems_per_sheet` distinct problems, all of that topic and within the rules `curriculum.json` gives for the student's grade. Write each one as `<li data-q="...">` inside `<ol class="problems">`, with `data-q` in the topic's `q_format` and the same expression shown as the item's visible text. - Answer key: `<ol class="answers">` has one `<li data-a="...">` per problem, in the same order, each with the exact answer in the topic's `answer_form` and shown as its visible text. - Printing: printed from Chrome to PDF (US Letter, default margins), each sheet is exactly two pages: all the problems on page 1, and the answer key, under the heading "Answer key", on page 2. - No personal data: the sheets go into a shared worksheet bank, so they must not contain the student's name, surname or school, in any form or place in the file. - Self-contained: no scripts, images, links or external resources (no URLs at all); inline CSS only. ## How this run works - Work on your own: nobody will answer questions in this task, and writing to `ask/` counts against the run. - Write only under `out/`. Create `out/` if it is missing. Inputs are synthetic; don't fetch anything from the network. - Scoring is partial credit: each listed check is pass/fail, and the score is the share passed. Numbers are compared to within 0.005 unless the task says otherwise.