feat(syntax): parse the apis container block

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

packages/syntax/src/parser.ts

@@ -1,5 +1,10 @@
 import { WRN_RUNTIME_TARGETS } from "./spec.ts";
-import { parseApiSections, hasRequestSection, type ApiSections } from "./api-sections.ts";
+import {
+  parseApiSections,
+  parseApiEntries,
+  hasRequestSection,
+  type ApiSections,
+} from "./api-sections.ts";
 
 /**
  * Recursive-descent parser for `.wrn`, producing a small AST.
@@ -142,7 +147,7 @@ export interface ApiBlock {
 
 export type SeoBlock = Record<string, string>;
 
-export type DataMode = "ssr" | "client";
+export type DataMode = "ssr" | "client" | "any";
 
 export interface DataApiBlock {
   mode: DataMode;
@@ -845,6 +850,17 @@ export function parse(source: string): PageAst {
           persist = parsePersist(lx.readBalancedBraces());
           break;
         }
+        case "apis": {
+          lx.next();
+          const body = lx.readBalancedBraces();
+          for (const entry of parseApiEntries(body)) {
+            if (dataApis.some((block) => block.name === entry.name)) {
+              throw new ParseError(`Duplicate api entry "${entry.name}" in apis block`);
+            }
+            dataApis.push(entry);
+          }
+          break;
+        }
         default:
           throw new ParseError(`Unknown page member '${kw.value}' at offset ${kw.pos}`);
       }