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feat: bandar and broker totals for one investor side

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IPOT's investor filter splits each broker row by client domicile, but its
footer then gives only that side's buying (BBCA 2026-10-16: foreign 1.7 T,
domestic 4.9 T of 6.6 T). The foreign net gives the selling on all boards:
foreign 1.7 + 2.3 = 4.0 T (IDX: about 3.95 T regular), domestic
4.9 - 2.3 = 2.6 T.

- BrokerSummary gains buy_value and sell_value: the total for all
  investors, the footer and the derived selling for one side (selling is
  null with a board filter, where the net covers other boards).
- Bandar weighs the top N buyers' share of the value bought against the
  top N sellers' share of the value sold, so `--investor foreign|domestic`
  reads that side alone; for all investors the readings are unchanged.
  One side on one board is refused, as there is no selling to weigh.
- Tables print what the side bought and sold; fixtures for foreign and
  domestic on all boards were recorded from IPOT.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V3syn2fN2LNo5pvTSqc6eh
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hermes 2026-10-18 06:08:02 +00:00
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web/src/content/docs/cli/reference.md
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@ -356,7 +356,7 @@ Examples:
### `idx stocks bandar`
```text
Bandarmology from the broker summary: the top 1, 3, 5 and 10 buyers' value against the same number of sellers', as a share of value traded, with a signal from big accumulation to big distribution. Several symbols give a screen ranked by the headline tier (at most 100, one request each). Counts all investors (`--investor` must be `all`). A heuristic over end-of-day broker codes, not advice.
Bandarmology from the broker summary: the top 1, 3, 5 and 10 buyers' value against the same number of sellers', as a share of value traded, with a signal from big accumulation to big distribution. Several symbols give a screen ranked by the headline tier (at most 100, one request each). `--investor foreign|domestic` weighs that side's buyers against its buying and its sellers against its selling (needs `--board all`). A heuristic over end-of-day broker codes, not advice.
Usage: idx stocks bandar [OPTIONS] <SYMBOLS>...