fix(graphql-query): address PR review (drop .js, use @constructive-io/fetch, drop exports)

Three review comments from pyramation:

1. graphql/query/src/runtime/index.ts — drop `.js` extensions from
   relative re-exports; the monorepo is CJS, not ESM.

2. graphql/query/src/runtime/localhost-fetch.ts — replace with
   @constructive-io/fetch (the shipped, single-purpose package from
   constructive-io/dev-utils). Identical createFetch / FetchFunction
   surface; same fix for *.localhost DNS + Host header. File deleted
   in favor of the dependency.

3. graphql/query/package.json — drop the `exports` map; monorepo
   convention is main/module/types only. Sub-path
   `@constructive-io/graphql-query/runtime` still resolves via
   filesystem walk under classic moduleResolution: node.

Verified: graphql/query builds and tests pass (18 tests, 29 snapshots);
constructive-sdk builds clean and `require.resolve` resolves the
sub-path correctly without `exports`. Pre-existing ESLint v9 config
issue unchanged.

Lockfile intentionally not updated to keep this PR's diff focused —
CI uses non-frozen `pnpm install` and will pick up
@constructive-io/fetch on install.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: yyyyaaa

graphql/query/package.json

@@ -6,18 +6,6 @@
   "main": "index.js",
   "module": "esm/index.js",
   "types": "index.d.ts",
-  "exports": {
-    ".": {
-      "types": "./index.d.ts",
-      "import": "./esm/index.js",
-      "require": "./index.js"
-    },
-    "./runtime": {
-      "types": "./runtime/index.d.ts",
-      "import": "./esm/runtime/index.js",
-      "require": "./runtime/index.js"
-    }
-  },
   "homepage": "https://github.com/constructive-io/constructive",
   "license": "MIT",
   "publishConfig": {
@@ -42,6 +30,7 @@
   },
   "dependencies": {
     "@0no-co/graphql.web": "^1.1.2",
+    "@constructive-io/fetch": "^1.0.0",
     "@constructive-io/graphql-types": "workspace:^",
     "ajv": "^8.18.0",
     "gql-ast": "workspace:^",

graphql/query/src/runtime/index.ts

@@ -3,9 +3,9 @@
  *
  * Generated ORM clients need runtime dependencies at execution time.
  * This module re-exports so generated code can consolidate imports:
- *   - @0no-co/graphql.web  — parseType, print
- *   - @constructive-io/graphql-types — GraphQLAdapter, GraphQLError, QueryResult
- *   - ./localhost-fetch — createFetch (isomorphic *.localhost-aware fetch)
+ *   - @0no-co/graphql.web              — parseType, print
+ *   - @constructive-io/graphql-types   — GraphQLAdapter, GraphQLError, QueryResult
+ *   - @constructive-io/fetch           — createFetch (isomorphic *.localhost-aware fetch)
  *
  * gql-ast is intentionally NOT re-exported here because the templates
  * use `import * as t from 'gql-ast'` — mixing it into this namespace
@@ -17,12 +17,9 @@
  *   import type { GraphQLAdapter } from '@constructive-io/graphql-query/runtime';
  */
 
-// From @0no-co/graphql.web — GraphQL parsing/printing
 export { parseType, print } from '@0no-co/graphql.web';
 
-// From @constructive-io/graphql-types — adapter interface + result types
 export type { GraphQLAdapter, GraphQLError, QueryResult } from '@constructive-io/graphql-types';
 
-// Isomorphic fetch with *.localhost DNS + Host header fix for Node.js
-export { createFetch } from './localhost-fetch.js';
-export type { FetchFunction } from './localhost-fetch.js';
+export { createFetch } from '@constructive-io/fetch';
+export type { FetchFunction } from '@constructive-io/fetch';