refactor: rename bin/check → bin/htmlproofer, bin/fastcheck → bin/prettier

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: cb341

.github/workflows/ci.yml

@@ -19,4 +19,4 @@ jobs:
           node-version: "lts/*"
       - run: npm install -g prettier
       - run: bin/build
-      - run: bin/check
+      - run: bin/htmlproofer

.github/workflows/deploy.yml

@@ -31,7 +31,7 @@ jobs:
           node-version: "lts/*"
       - run: npm install -g prettier
       - run: bin/build
-      - run: bin/check
+      - run: bin/htmlproofer
       - uses: actions/configure-pages@v5
       - uses: actions/upload-pages-artifact@v3
         with: