fix(stockbit): bid/offer while trading; drop stale foreign flow

Observed in session on 2026-11-03:

- The regular board trades as STATE_NAME_SESSION_2, not the assumed
  STATE_NAME_MARKET_OPEN, so session quotes hid bid/offer all day. Any
  numbered STATE_NAME_SESSION_<n> now counts as trading; the lunch break
  is STATE_NAME_BREAK.
- In session the order book's fbuy/fsell/fnet were the previous session's
  (equal to IPOT's 2026-11-02 net for BBCA, BBRI and TLKM) and
  has_foreign_bs was false. Foreign figures are kept only when that flag
  is true.

Fixtures for the break, the trading state and an in-session book; the
table names the session ("market open (session 2)").

Claude-Session: https://claude.ai/code/session_01RqPPVeVDrnLoP7NUZmLRxY

web/src/content/docs/cli/stockbit.md

@@ -195,12 +195,15 @@ What the login adds:
 | --- | --- | --- |
 | `--provider stockbit` quotes | public page, delayed | Stockbit's API, live |
 | Bid and offer in quotes | best price, while open | best price, while open |
-| `stocks orderbook` | `AUTHERROR` | every level with lots and queued orders, OHLC, value, trades, foreign buy/sell/net |
+| `stocks orderbook` | `AUTHERROR` | every level with lots and queued orders, OHLC, value, trades; foreign buy/sell/net once Stockbit marks them current |
 | `stocks history` under `--provider stockbit` | Yahoo | Stockbit's daily candles for `5d` to `1y`; Yahoo for other windows |
 | `stocks intraday` | public page | public page |
 
 The order book is what Stockbit's own app shows. Outside trading it is the
-book as the market left it, and the output says so. Sizes are lots in the
+book as the market left it, and the output says so. Foreign buy, sell and net
+appear only when Stockbit marks them current: during trading its figures are
+the previous session's, so idx leaves them out (`stocks flow` has foreign
+flow session by session). Sizes are lots in the
 table and shares in JSON. `--history-provider stockbit` asks for Stockbit's
 candles explicitly; windows it charts only weekly or hourly (`2y`, `5y`,
 `1wk`) answer `UNSUPPORTED`.

web/src/content/docs/cli/stocks.md

@@ -42,7 +42,8 @@ idx stocks orderbook BBRI --depth 5
 
 With your own Stockbit session (`idx stockbit login`), `orderbook` shows
 every bid and offer level with lots and queued orders, the session's OHLC,
-value and trades, and foreign buy, sell and net. Without one it answers
+value and trades, and foreign buy, sell and net once Stockbit marks them
+current (not during trading, when they lag a day). Without one it answers
 `AUTHERROR`. See [Stockbit](/cli/stockbit/#with-your-stockbit-login).
 
 ## Company data

web/src/content/docs/mcp/tools.md

@@ -94,7 +94,7 @@ Every IDX holding (above 1%) of one investor, matched by name.
 
 ## `get_orderbook`
 
-Order book of one IDX stock from the user's own Stockbit session: `bids` and `offers` (best price first) of {price, shares, orders}, the session's OHLC, volume (shares), value and frequency, and foreign buy/sell/net in IDR. `market_status` is Stockbit's state, verbatim; outside STATE_NAME_MARKET_OPEN the book is as the market left it. AUTHERROR means there is no session: call stockbit_status, then stockbit_login for a URL the user can open.
+Order book of one IDX stock from the user's own Stockbit session: `bids` and `offers` (best price first) of {price, shares, orders}, the session's OHLC, volume (shares), value and frequency, and foreign buy/sell/net in IDR (null while Stockbit marks them not current, as during trading; get_foreign_flow has them per session). `market_status` is Stockbit's state, verbatim: STATE_NAME_SESSION_1 or _2 is trading; in any other state the book is as the market left it. AUTHERROR means there is no session: call stockbit_status, then stockbit_login for a URL the user can open.
 
 | Input | Type | Required | Description |
 | --- | --- | --- | --- |