Add Cboe NSE and Deribit public research sources

[PureSaber]

Adds bounded official-source ingestion for VX daily files, NSE index F&O UDiFF files, and Deribit option history/current marks. Every published bundle records source hashes, exclusions, normalization assumptions and permitted research modes. Coin-quoted Deribit inputs remain analytical USD projections and cannot enable account replay.

Validation: synthetic response tests cover units, historical lots, unsafe archives, request bounds, pagination, missing data, freshness and mode restrictions. Bounded live Cboe/NSE/Deribit samples generated analysis reports; VX and NSE futures also passed modeled replay with explicit margins. Full CI remains the merge gate. Raw market data stays outside Git.

[PureSaber]

实施者自审记录（不冒充独立审批）：已检查输入单位与来源限制、旧接口兼容、不可变输出及失败不发布的路径。相关本地测试和真实小样本验收通过，当前提交的远端检查全部成功。原始行情与凭据未提交仓库。

[PureSaber]

实施者自审更新（不冒充独立审批）：已合入 origin/main 的并行研究准入改动；本次三个免费源适配器与验收功能提交保持一致。合并后当前 head 的 Python 3.10/3.11/3.12、Windows 3.12 和 CodeQL 全部通过。固定部署继续引用已验收的 ab17ee7 功能提交，不隐式升级并行功能。真实样本、请求边界、来源指纹、Deribit 仅分析限制与分页完整性检查均已核对。