fix(plugin-kit): declare the Node.js versions @sanity/pkg-utils 13 runs on

.changeset/plugin-kit-node-engines.md

@@ -0,0 +1,5 @@
+---
+'@sanity/plugin-kit': patch
+---
+
+Narrow `engines.node` from `>=24` to `^24.11.0 || >=26.0.0`, the Node.js 24+ versions that `@sanity/pkg-utils` 13 supports

AGENTS.md

@@ -690,7 +690,7 @@ Tests run against the dedicated bare-bones `dev/e2e-studio` (workspaces `/chromi
 
 ### Node.js version notes
 
-`dev/test-studio` declares `engines.node: "24"`; the monorepo otherwise targets latest LTS. Node 24 is preferred when available, and **Node >= 22.18 is required for a full `pnpm build`**: the `@repo/generators` build runs `tsdown`, which loads its `.mts` config through Node's native TypeScript support. On older Node 22.x (e.g. the `v22.14.0` that may be the VM default) that build fails with `Failed to import module "unrun"`. **`pnpm format` and `pnpm lint` also require Node >= 22.18** (oxfmt and oxlint load the TypeScript `oxfmt.config.ts` / `oxlint.config.ts` through the same mechanism). A new enough runtime is usually available via `nvm` (e.g. `export PATH="$HOME/.nvm/versions/node/v22.22.2/bin:$PATH"`). `pnpm test` works on older Node 22 too.
+`dev/test-studio` declares `engines.node: "24"`; the monorepo otherwise targets latest LTS. Node 24 is preferred when available, and **Node >= 22.18 is required for a full `pnpm build`**: the `@repo/generators` build runs `tsdown`, which loads its `.mts` config through Node's native TypeScript support. tsdown 0.23, `@sanity/tsdown-config` and `@sanity/pkg-utils` 13 support Node `^22.18.0 || ^24.11.0 || >=26.0.0`, so Node 25 is not supported for builds. On older Node 22.x (e.g. the `v22.14.0` that may be the VM default) that build fails with `Failed to import module "unrun"`. **`pnpm format` and `pnpm lint` also require Node >= 22.18** (oxfmt and oxlint load the TypeScript `oxfmt.config.ts` / `oxlint.config.ts` through the same mechanism). A new enough runtime is usually available via `nvm` (e.g. `export PATH="$HOME/.nvm/versions/node/v22.22.2/bin:$PATH"`). `pnpm test` works on older Node 22 too.
 
 ### Lint / build / test
 

packages/@sanity/plugin-kit/README.md

@@ -38,8 +38,10 @@ Check the [FAQ](#faq) fro more on these.
 
 > npm install --save-dev @sanity/plugin-kit
 
-Running the plugin-kit CLI requires Node.js 24 or newer. Plugins scaffolded by plugin-kit are not
-affected by this requirement: they declare the wider Node.js range shared with `@sanity/pkg-utils`.
+Running the plugin-kit CLI requires Node.js `^24.11.0 || >=26.0.0`, the Node.js 24+ versions its
+build peer `@sanity/pkg-utils` runs on. Plugins scaffolded by plugin-kit are not affected by this
+requirement: their `engines.node` (`>=20.19 <22 || >=22.12`, as in the package template of
+`@sanity/pkg-utils`) describes where the published plugin runs, not the Node.js that builds it.
 
 ### Install build tool
 

packages/@sanity/plugin-kit/package.json

@@ -105,7 +105,7 @@
     }
   },
   "engines": {
-    "node": ">=24"
+    "node": "^24.11.0 || >=26.0.0"
   },
   "binname": "plugin-kit"
 }