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

pnpm-lock.yaml

@@ -119,8 +119,8 @@ importers:
         specifier: link:../../../at-mintel/packages/meme-generator
         version: link:../../../at-mintel/packages/meme-generator
       "@mintel/payload-ai":
-        specifier: ^1.9.15
-        version: 1.9.15(@payloadcms/next@3.77.0(graphql@16.12.0)(monaco-editor@0.55.1)(next@16.1.6(@opentelemetry/api@1.9.0)(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(sass@1.77.4))(payload@3.77.0(graphql@16.12.0)(typescript@5.9.3))(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(typescript@5.9.3))(@payloadcms/ui@3.77.0(monaco-editor@0.55.1)(next@16.1.6(@opentelemetry/api@1.9.0)(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(sass@1.77.4))(payload@3.77.0(graphql@16.12.0)(typescript@5.9.3))(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(typescript@5.9.3))(payload@3.77.0(graphql@16.12.0)(typescript@5.9.3))(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(typescript@5.9.3)(ws@8.19.0)
+        specifier: link:../../../at-mintel/packages/payload-ai
+        version: link:../../../at-mintel/packages/payload-ai
       "@mintel/pdf":
         specifier: link:../../../at-mintel/packages/pdf-library
         version: link:../../../at-mintel/packages/pdf-library
@@ -314,7 +314,7 @@ importers:
         specifier: ^0.18.5
         version: 0.18.5
       zod:
-        specifier: ^3.25.76
+        specifier: ^3.23.8
         version: 3.25.76
     devDependencies:
       "@eslint/eslintrc":