fix: resolve admin white screen via static ChatWindowProvider import

- Statically declare ChatWindowProvider in payload.config.ts admin.components.providers
- Regenerate importMap.js with correct component mappings
- Update Dockerfile to support _at-mintel monorepo sync for local builds
- Add .gitignore entries for manual build artifacts
- Update blocks and collections (payload-ai integration updates)
- Sync pnpm-lock.yaml

apps/web/src/payload/blocks/H3Block.ts

@@ -15,7 +15,7 @@ export const H3Block: MintelBlock = {
         description: "Geben Sie den Text für die H3-Überschrift ein.",
         components: {
           afterInput: [
-            "@mintel/payload-ai/components/AiFieldButton#AiFieldButton",
+            "@mintel/payload-ai/components/FieldGenerators/AiFieldButton#AiFieldButton",
           ],
         },
       },