iChinese: historical posthumous-name data

Sources: Wikisource contributors, Chinese Wikisource.
Each record in posthumous.json identifies its book, chapter, and fixed revision URL.

Ancient source works:
- Yizhoushu, Shifa chapter, with the commentary transmitted under Kong Chao's name.
- Su Xun, Shifa, volumes 1-4 (Song dynasty).
- Zhu Pengshou, Jiudian Beizheng, volume 3 (published in the late Qing).
- Yan Kejun, Quan Han Wen, volumes 1 and 3 (Qing dynasty compilation).
- Chen Shou, Sanguozhi, volume 36, Guan Yu biography, with Pei Songzhi's annotations.

The underlying historical works are in the public domain. For Wikisource's
transcriptions and this derived arrangement, attribution is retained and the
posthumous-name data is made available under CC BY-SA 4.0:
https://creativecommons.org/licenses/by-sa/4.0/

Changes: selected relevant chapters and fields; removed wiki markup; grouped
explicit "X yue Y" and "X wei Y" Shifa definitions by headword; retained original commentary;
indexed documented character variants; selected historical examples and added
modern dynasty labels, search aliases and explanatory editorial notes. Original
spellings are retained. Image-only glyphs use the Wikisource template's text or
image alternative text; unresolved glyphs remain a missing-character square.

No individual award rationale is inferred from the general Shifa definitions.
This is a bounded collection, not a census of all historical posthumous names.
The complete source snapshots and selection evidence are available in this repo:
https://github.com/zuyu/ichinese/tree/main/sources