fix(v2): build the documents before typechecking in CI

worker/src/generated/ is gitignored -- it is a pure function of the tree, so
committing it would be a second source of truth -- which means a fresh checkout
does not have it and tsc cannot resolve ./generated/documents.js.

Locally the directory already existed from an earlier build, so the ordering
mistake was invisible until CI ran on a clean checkout. build:data now runs
first. deploy.yml already had the right order.

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

Author: thebentern

.github/workflows/ci.yml

@@ -126,12 +126,15 @@ jobs:
 
       - run: pnpm install --frozen-lockfile --ignore-scripts=false
 
-      - name: Typecheck
-        run: pnpm typecheck
-
+      # build:data FIRST. worker/src/generated/ is gitignored -- it is a pure function of the
+      # tree, so committing it would be a second source of truth -- which means a fresh checkout
+      # does not have it and `tsc` cannot resolve ./generated/documents.js until it is built.
       - name: Build the published documents
         run: pnpm build:data
 
+      - name: Typecheck
+        run: pnpm typecheck
+
       - name: Validate data
         run: pnpm validate