chore(clis/eastmoney): mirror 13 adapters + _secid helper as Phase A oracle

[jackwener]

Summary

Mirror the remaining 13 read-oriented eastmoney adapters and the shared _secid.js helper from the author's local workspace into the repo. After this PR, clis/eastmoney/ contains the full Phase A codegen regression oracle described in OpenCLI Improvement Spec v1.1 §B.10.

Oracle counting (unified, per spec §B.10 / codex-mini0 final):

repo oracle = 14 adapters total under clis/eastmoney/, where hot-rank.js already exists and this PR mirrors the remaining 13 adapters plus _secid.js helper.

Why this PR is standalone (oracle-only)

Per spec v1.1 §B.10, the oracle mirror is intentionally decoupled from the framework PR:

• Framework PR diffs stay clean (only framework / skill code)
• Oracle PR is pure data → trivial review
• Merge order is fixed: this PR first → framework PR can run Phase A codegen diff gate

Files

All 14 files are pure fetch-based read adapters (no browser / no write / no auth state), written using the existing @jackwener/opencli/registry + @jackwener/opencli/errors exports. They were generated and live-verified during task #177.

• _secid.js — KNOWN_MARKET_PREFIXES whitelist + regex dispatch; resolves 600519 / sh600519 / 00700.HK / us.AAPL → market.code secid. Canonical example of the spec v1.1 §B.7 helper contract (pure normalize, serializable I/O, no env / fs / net / session, does not drive pagination / retry / fallback).
• quote.js — batch quote (A / HK / US via secids=1.600000,0.000001,...)
• rank.js — ranking across hs-a / sh-a / sz-a / bj-a / cyb / kcb / HK / US x 6 sorts
• index-board.js — main / hk / us indices
• kline.js — K-line history, 8 periods x 3 adjusts. Exercises spec §B.9 CSV row_format: data.klines = ["20250101,open,close,high,low,vol,...", ...] decoded by positional index.
• sectors.js — industry / concept / region x 5 sorts
• money-flow.js — main-force net inflow today / 5d / 10d
• etf.js — ETF list by turnover / change / volume / rate
• convertible.js — convertible bond listing. Exercises spec §B.9 :row_index special source: rank: i + 1 (1-based derived column).
• northbound.js — northbound / southbound realtime, wan->yi conversion
• longhu.js — longhubang (30-day default window)
• holders.js — top 10 free-float holders
• announcement.js — listed company announcements SHA / SZA / BJA
• kuaixun.js — 7x24 newswire (columns 102 / 101 / 104 / 105 / 106 / 107)

Schema-expressiveness coverage

These adapters intentionally cover the two gaps discovered during spec prep (F2) that drove spec v1.1 §B.9:

gap	driving adapter	schema feature
CSV row with positional decode	kline.js	row_format: csv + delimiter + from: <int index> + transform: date_yyyymmdd
Computed column from row index	convertible.js	from: :row_index, offset: 1

Plus _secid.js as the canonical §B.7 helper case.

Test plan

• All 14 adapters were live-verified during task feat(leetcode): add problems list command #177 before mirroring.
• hot-rank.js (already in repo) is untouched.
• Phase A framework PR (separate, follow-up) will run opencli validate eastmoney + per-command live diff against these 14 adapters; any schema gap surfaced there feeds back into spec v1.1.

Refs

• Task feat(leetcode): add problems list command #177 (OpenCLI Improvement Spec v1.1)
• Spec §B.7 (helper contract) / §B.9 (row model) / §B.10 (oracle layering)
• Thread #OpenCLI:6df17bdb (reviewer consensus on option (a) — mirror now)