Drop URL/introspection codegen path from docs

Codegen takes a local SDL file now; remove the get-graphql-schema
example and URL variant from the README and codegen.ts.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: dfalling

README.md

@@ -149,15 +149,10 @@ Reload the app on device with `R` twice (emulator) or shake (physical device).
 
 Queries/mutations live alongside the code they're used in (`src/**/*.graphql`).
 The schema itself is **not** committed — this is a public repo, so we don't
-leak full introspection. Pass a path or URL as a positional arg:
+leak it. Drop an SDL file somewhere (gitignored) and pass its path:
 
 ```sh
-# dump SDL locally (gitignored) and point codegen at it:
-bunx get-graphql-schema http://localhost:4000/api/graphql > schema.graphql
 bun run codegen ./schema.graphql
-
-# or hit the running endpoint directly:
-bun run codegen http://localhost:4000/api/graphql
 ```
 
 Output: `src/graphql/__generated__/types.ts` — committed to the repo. CI

codegen.ts

@@ -1,14 +1,12 @@
 import type {CodegenConfig} from '@graphql-codegen/cli';
 
-// Schema is not committed (public repo — don't leak full introspection).
-// Pass a path or URL as the last arg to `bun run codegen`:
+// Schema is not committed (public repo). Pass a local SDL path as the last arg:
 //   bun run codegen ./schema.graphql
-//   bun run codegen http://localhost:4000/api/graphql
 const schema = process.argv.find(
   (a, i) => i > 1 && !a.startsWith('-') && process.argv[i - 1] !== '--config',
 );
 if (!schema) {
-  throw new Error('Usage: bun run codegen <path-or-url-to-schema>');
+  throw new Error('Usage: bun run codegen <path-to-schema.graphql>');
 }
 
 const config: CodegenConfig = {