feat: fold sanity-plugin-latex-input into monorepo

[Copilot]

Migrates sanity-plugin-latex-input into this monorepo using pnpm generate "copy plugin" with git subtree to preserve commit history.

Generator fix (prerequisite)

• turbo/generators was building ESM (.mjs) output, but turbo gen loads config in a CJS context — import.meta.url becomes undefined, crashing createRequire. Fixed by switching tsdown output to format: ['cjs'].

Plugin migration

• LatexPreview.tsx: replaced broken useMemo(fn, deps) pattern (sets state during render → infinite loop flagged by linter) with proper derived computation; switched from default KaTeX import to named renderToString; removed unused React import
• schema.ts: fixed ObjectDefinition to use type import; moved module augmentation from @sanity/types → sanity (matches other plugins in this repo)
• Added src/css.d.ts to declare the katex/dist/katex.min.css side-effect import
• Moved @types/katex from dependencies → devDependencies
• Updated README, normalized CHANGELOG header, added entry to root plugin table
• Major changeset: migration enforces React 19.2+, Sanity v5+, ESM-only, React Compiler

[Copilot]

Pull request overview

This PR migrates sanity-plugin-latex-input into the plugins monorepo (preserving history via git subtree) and adjusts the turbo generator build output so turbo gen can load the generator config in a CommonJS context.

Changes:

• Switch turbo/generators build output to CJS and update the runtime re-export to load the CJS artifact.
• Add the sanity-plugin-latex-input workspace with schema, preview component, package exports test, and monorepo package scaffolding (pkg-utils config, TS configs, Knip entry).
• Wire the plugin into the dev test studio and add documentation + changeset entries.

Reviewed changes

Copilot reviewed 21 out of 23 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
turbo/generators/tsdown.config.mts	Forces CJS output for generator build artifacts to match turbo gen’s loading context.
turbo/generators/config.ts	Updates re-export to load the generated CJS config artifact.
README.md	Adds sanity-plugin-latex-input to the root plugin table.
pnpm-lock.yaml	Adds the new workspace and updates lockfile state for new deps/resolutions.
plugins/sanity-plugin-latex-input/vitest.config.ts	Adds Vitest config for the plugin workspace (package-exports test setup).
plugins/sanity-plugin-latex-input/tsconfig.json	Adds typecheck TS config for the plugin workspace.
plugins/sanity-plugin-latex-input/tsconfig.build.json	Adds build TS config for the plugin workspace.
plugins/sanity-plugin-latex-input/src/schema.ts	Introduces the latex schema type and Sanity module augmentation for intrinsic defs.
plugins/sanity-plugin-latex-input/src/plugin.tsx	Defines the latexInput plugin that registers the schema type.
plugins/sanity-plugin-latex-input/src/index.ts	Public exports for the plugin, preview component, and schema types.
plugins/sanity-plugin-latex-input/src/index.test.ts	Adds an exports-manifest test to validate published API surface.
plugins/sanity-plugin-latex-input/src/css.d.ts	Declares the KaTeX CSS side-effect import for TypeScript.
plugins/sanity-plugin-latex-input/src/components/LatexPreview.tsx	Implements the KaTeX-based preview renderer used by the schema preview component.
plugins/sanity-plugin-latex-input/README.md	Adds plugin-specific README content (usage/install/docs).
plugins/sanity-plugin-latex-input/package.json	Adds package metadata, exports map, deps/peers, and build scripts for publishing.
plugins/sanity-plugin-latex-input/package.config.ts	Enables React Compiler for this package via pkg-utils config.
plugins/sanity-plugin-latex-input/CHANGELOG.md	Brings the upstream changelog into the monorepo package directory.
plugins/@sanity/document-internationalization/src/schema/translation/metadata.ts	Reformats the default export function signature.
knip.jsonc	Registers the new plugin workspace for Knip.
dev/test-studio/src/latex-input/index.tsx	Adds a test-studio example schema/plugin setup for LaTeX blocks and inline math.
dev/test-studio/sanity.config.ts	Registers the new latex-input example plugin in the test studio config.
dev/test-studio/package.json	Adds sanity-plugin-latex-input as a dependency of the dev test studio.
.changeset/fold-latex-input.md	Adds a major changeset documenting migration and breaking changes.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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