dx-references

Topics: $ARGUMENTS (space-separated). Read ${CLAUDE_SKILL_DIR}/references/<topic>.md for every topic, in one call, and use their contents to complete the current task. A topic already loaded earlier in this session is not re-read — reuse it.

For any topic whose file does not exist, list the files in ${CLAUDE_SKILL_DIR}/references/ and report that topic as not found, naming the topics that are available. Still return the ones that were found.