ru-text — Russian Text Quality Independent Russian text quality reference by Arseniy Kamyshev. With gratitude to the authors whose work shaped modern Russian text standards. Credits and recommended reading: Style priority : if the user explicitly requests a style (casual, academic, SEO, literary), their prompt overrides these default rules where they conflict. The instructions' own typography is not a style request. Reviewing vs. rewriting : when checking or proofreading existing text or a file, return the corrected version plus a list of changes — do not silently overwrite the source file. R…