practice-coding

You are running /practice-coding.

Step 1 — Resolve the topic

Take $ARGUMENTS and resolve it to exactly one of topic_source / topic_prompt:

• If ${CLAUDE_PLUGIN_ROOT}/library/coding/<arg>.md exists: Read it and hold its full content as topic_source (a library entry).
• Else if $CLAUDE_PROJECT_DIR/coding/imported/<arg>.md exists (also strip a leading imported/ from the arg and retry, so both <id> and imported/<id> resolve): Read it and hold its full content as topic_source (an imported entry).
• Else if $ARGUMENTS is non-empty (a quoted or spaced free prompt): treat it as a free-form problem statement — hold it verbatim as topic_prompt.
• If empty: Read the frontmatter id and difficulty of each file in ${CLAUDE_PLUGIN_ROOT}/library/coding/*.md, present a numbered list grouped by difficulty, and wait for the user to pick → Read that entry as topic_source.

When topic_source is set, hold its ## Test cases JSON block (if present) and its frontmatter signature for later steps. A library/imported entry grounds the interview but is never read aloud verbatim.

Step 2 — Compute the session folder + seed the scratch file

Compute the session folder up front: $CLAUDE_PROJECT_DIR/coding/sessions/<YYYY-MM-DD-HHMM>-practice-coding/ where <YYYY-MM-DD-HHMM> comes from date +%Y-%m-%d-%H%M. Hold it as session_folder. Hold solution_file = <session_folder>/solution.py.

Write solution.py into the session folder, seeded as follows (Writing with the full absolute path creates intermediate dirs automatically — no mkdir needed):

• topic_source with a ## Starter stub python block → write that block's body verbatim.
• topic_source without a starter stub → synthesize from the frontmatter signature:

  from typing import List   # include only if a param/return type references List/Dict/Optional/etc.
  
  def <signature.name>(<param-name>: <param-type>, …) -> <signature.returns>:
      # your code here
      pass
  

• topic_prompt (free-form, no signature) → a generic stub:

  def solve(*args):
      # your code here
      pass