ACF Frontend Form docs: create/update modes + styling; dev server auto-reload

Rewrite the ACF Frontend Form widget doc for the new Update/Create modes,
redirect option, reliable submissions, live editor tabs and the new style
controls. Switch the container to the Docusaurus dev server so editing docs
auto-updates the live site with no rebuild or restart.

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

docker-compose.yaml

@@ -10,17 +10,19 @@ services:
     restart: always
     environment:
       SITE_URL: ${SITE_URL}
-      NODE_ENV: production
+      NODE_ENV: development
     volumes:
-      # The markdown source content — edit files here, then
-      # `docker compose up -d --build` (or just `restart`) to rebuild and
-      # pick up the changes. Organised as one folder per plugin.
+      # The markdown source content — edit files in here and the running dev
+      # server picks them up automatically: no rebuild, no restart. Organised
+      # as one folder per plugin.
       - ./docs:/app/docs
-    # Rebuilds the static site fresh on every container start (picking up
-    # whatever is currently in ./docs and the current SITE_URL), then serves
-    # the result. A few seconds slower to start than pre-built static files,
-    # but means editing docs never requires touching the image.
-    command: sh -c "npm run build && npm run serve -- --host 0.0.0.0 --port ${PORT}"
+    # Runs the Docusaurus dev server, which watches ./docs and recompiles on
+    # every change, so editing a doc updates the live site with no container
+    # restart or rebuild. `--poll` makes file-change detection reliable across
+    # the bind mount. For a truly live browser refresh (HMR) enable
+    # "Websockets Support" on this host in Nginx Proxy Manager; without it an
+    # already-open tab still updates on the next manual refresh.
+    command: sh -c "npm run start -- --host 0.0.0.0 --port ${PORT} --no-open --poll 1000"
     networks:
       - proxy
     # No host port published — Nginx Proxy Manager reaches this container