chore: unify Cursor rules, fix monorepo install hooks, refresh basic docs

Add root preinstall to set githooks and disable parallel vp config git lock races; merge per-app Cursor thin rules into app.mdx; keep template READMEs free of monorepo-only paths and describe basic as default English rather than English-only.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/basic/.github/instructions/frontend.instructions.md

@@ -2,7 +2,7 @@
 
 ## applyTo: "src/\*_/_.{ts,tsx,css}"
 
-description: "Use when editing React UI, route pages, components, styles, layout, i18n text, or Ant Design behavior. Keywords: frontend, component, page, ui, layout, style, antd, i18n."
+description: "Use when editing React UI, route pages, components, styles, layout, copy, or Ant Design behavior. Keywords: frontend, component, page, ui, layout, style, antd, english copy."
 
 # Frontend Instructions
 
@@ -16,7 +16,7 @@ Keep frontend changes predictable, minimal, and reusable for AI-assisted edits.
 - Prefer reusable components and hooks over copy-paste logic.
 - Keep styles token-driven using existing theme/store patterns.
 - For Ant Design styling, follow this priority: component native API (`variant`/`type`/`size`/`styles`/`classNames`) -> `theme.useToken()` with inline `style` -> `className` + external CSS.
-- Keep translations compatible with Lingui macros and catalogs.
+- Keep user-facing copy in English as plain string literals (this template has no i18n layer).
 - Follow current folder conventions under src/components and src/routes.
 
 ## Do Not