datalisted

# fisis -- statistic observations (time series) Take a FISIS company code and statistic code and print that statistic's observations. FISIS keys a time series by a company (`finance_cd`) and a statistic (`list_no`), optionally narrowed to one account item (`account_cd`). The fetching and parsing live in the fisis package (on PyPI); this skill is a thin wrapper that calls its CLI and relays the result. A rejected key or a vendor error comes back as a one-line `fisis: <message>` -- relay it as-is rather than throwing a stack trace at the user. (A missing or malformed argument is caught earlier by argparse, which prints usage and exits 2.) ## Prerequisite This plugin calls the `fisis` CLI, so the package must be installed and an API key set: ``` pipx install fisis # or: pip install fisis export FISIS_API_KEY=... # a free key from https://fisis.fss.or.kr/openapi/ ``` That puts the `fisis` command on PATH. The key can also be stored in `~/.config/fisis/credentials.json` as `{"FISIS_API_KEY": "..."}`. Without a key the CLI exits with `fisis: no FISIS API key ...`; relay that and point the user at the FISIS site. **Never print, log, quote, or echo the `FISIS_API_KEY` value itself** -- confirm only that a key is set. ## Running ``` fisis data <FINANCE_CD> <LIST_NO> --term Y|H|Q --start YYYYMM --end YYYYMM [--account-cd CODE] [--table] [--lang kr|en] [--json] ``` Options (`fisis data --help` is the source of truth): - `<FINANCE_CD>` -- the company code, from