Adds a BrokerSummaryProvider capability served by Indo Premier's public
broker summary page: the top 10 buyers and sellers of a stock by lots over
a date range, with totals. No login or key.
- api/ipot: pure parser (decimal scaling of `1.6 M`-style figures), a
client that retries the server's spurious 404s, and a fixture mock.
- broker: Broker::summary/latest over the cache (7 days for closed ranges,
5 minutes for today), range checks, and IDX member names bundled from
GetBrokerCodeList.
- foreign_net_value is null for filtered summaries: the source does not
apply the filters to it.
The endpoint's behavior was first mapped by fzn0x/idx (MIT).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V3syn2fN2LNo5pvTSqc6eh
