feat(examples): worked example for typed api blocks

- Add examples/basic-app/app/api/directory.ts and app/pages/api-block-demo.wrn
  as the end-to-end worked example for typed api blocks (Task 6).
- Add **/*.generated.api-checks.ts to .prettierignore: this generated file
  must match the CLI's raw output byte-for-byte for check:generated-types,
  and prettier was reformatting it.
- Fix packages/csr/test/api-call.test.ts: no-unsafe-function-type lint error
  from the raw Function type, uncovered while running the full gate.
- Rebuild editors/vscode bundles (packages/compiler and packages/syntax
  changed in Tasks 1-5).
- Regenerate docs/public-api-0.8.json (additive: isIdentPart, isIdentStart,
  skipLiteralOrComment newly exported from packages/syntax).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

examples/basic-app/app/routes.gen.ts

@@ -4,6 +4,7 @@
 export interface Routes {
   "/": Record<string, never>;
   "/about": Record<string, never>;
+  "/api-block-demo": Record<string, never>;
   "/async-data": Record<string, never>;
   "/chat": Record<string, never>;
   "/client-only": Record<string, never>;
@@ -27,6 +28,7 @@ export interface Routes {
 export interface RouteNames {
   "index": "/";
   "about": "/about";
+  "api.block.demo": "/api-block-demo";
   "async.data": "/async-data";
   "chat": "/chat";
   "client.only": "/client-only";
@@ -119,6 +121,7 @@ export function route<N extends RouteName>(
   const paths: Record<RouteName, RoutePath> = {
   "index": "/",
   "about": "/about",
+  "api.block.demo": "/api-block-demo",
   "async.data": "/async-data",
   "chat": "/chat",
   "client.only": "/client-only",