Параллель C

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Часть #1090.

Готово, когда

• Существует файл docs/par-c.md.
• В нём не меньше трёхсот знаков.

Границы

docs/par-c.md

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Landed on feat/queen-supervisor via PR BrowserOS#86. Closing by hand: a cross-repository merge into a feature branch cannot close an issue by keyword.

The record had been accepted since 2026-08-19 with no pull request behind it - one of ten cases found on 2026-08-23 where a lane called work done and the forge had never heard of it. Both criteria were met on the branch the whole time: the file exists and is well past three hundred characters.