fix: support dense_vector from ES fields response (ES 9.x compatibility) (#13972)

fix: support dense_vector from ES fields response (ES 9.x compatibility)

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] Configuration Chore (non-breaking change which updates
configuration)


## Summary by CodeRabbit

* **Bug Fixes**
* More accurate handling and unwrapping of dense-vector fields so
returned values have correct shapes.
* Field selection reliably limits returned data and falls back to
alternate result locations when needed.
* Use of consistent result IDs and tolerant handling when score values
are missing.

* **Chores / Configuration**
* Increased build memory and adjusted build-time flags for the frontend
build.
* Simplified runtime model/GPU checks and removed an automated runtime
GPU-install attempt.

* **Build Fixes**
* `web/vite.config.ts`: make `build.minify` and `build.sourcemap`
respect `VITE_MINIFY` and `VITE_BUILD_SOURCEMAP` env vars from
Dockerfile instead of hardcoding `terser` and `true`.

* **Environment**
* Allow stack version override and default the runtime image tag to
"latest".

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Bug Fixes**
* Correct unwrapping of dense-vector fields and reliable field selection
with fallback locations.
* Consistent use of hit-level IDs and tolerant handling when score
values are missing.

* **Chores / Configuration**
* Increased frontend build memory and added build-time minify/sourcemap
flags; build minification and sourcemap now configurable.
* Removed runtime GPU detection for model initialization; force CPU
initialization.

* **Environment**
* Allow stack version override and default runtime image tag to
"latest".

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

test/testcases/test_web_api/test_document_app/conftest.py

@@ -21,7 +21,7 @@ from pathlib import Path
 from types import ModuleType, SimpleNamespace
 
 import pytest
-from common import bulk_upload_documents, delete_document, list_documents
+from test_common import bulk_upload_documents, delete_document, list_documents
 
 
 class _DummyManager:

test/testcases/test_web_api/test_document_app/test_create_document.py

@@ -19,7 +19,7 @@ from types import SimpleNamespace
 from concurrent.futures import ThreadPoolExecutor, as_completed
 
 import pytest
-from test_web_api.common import create_document, list_datasets
+from test_common import create_document, list_datasets
 from configs import DOCUMENT_NAME_LIMIT, INVALID_API_TOKEN
 from libs.auth import RAGFlowWebApiAuth
 from utils.file_utils import create_txt_file

test/testcases/test_web_api/test_document_app/test_document_metadata.py

@@ -17,7 +17,7 @@ import asyncio
 from types import SimpleNamespace
 
 import pytest
-from common import (
+from test_common import (
     document_change_status,
     document_filter,
     document_infos,

test/testcases/test_web_api/test_document_app/test_list_documents.py

@@ -18,7 +18,7 @@ from concurrent.futures import ThreadPoolExecutor, as_completed
 from types import SimpleNamespace
 
 import pytest
-from common import list_documents
+from test_common import list_documents
 from configs import INVALID_API_TOKEN
 from libs.auth import RAGFlowWebApiAuth
 from utils import is_sorted

test/testcases/test_web_api/test_document_app/test_paser_documents.py

@@ -18,7 +18,7 @@ from concurrent.futures import ThreadPoolExecutor, as_completed
 from types import SimpleNamespace
 
 import pytest
-from common import bulk_upload_documents, list_documents, parse_documents
+from test_common import bulk_upload_documents, list_documents, parse_documents
 from configs import INVALID_API_TOKEN
 from libs.auth import RAGFlowWebApiAuth
 from utils import wait_for

test/testcases/test_web_api/test_document_app/test_rm_documents.py

@@ -17,7 +17,7 @@ import asyncio
 from concurrent.futures import ThreadPoolExecutor, as_completed
 
 import pytest
-from common import bulk_upload_documents, delete_document, list_documents
+from test_common import bulk_upload_documents, delete_document, list_documents
 from configs import INVALID_API_TOKEN
 from libs.auth import RAGFlowWebApiAuth
 

test/testcases/test_web_api/test_document_app/test_upload_documents.py

@@ -20,7 +20,7 @@ from types import ModuleType, SimpleNamespace
 from concurrent.futures import ThreadPoolExecutor, as_completed
 
 import pytest
-from common import list_datasets, upload_documents
+from test_common import list_datasets, upload_documents
 from configs import DOCUMENT_NAME_LIMIT, INVALID_API_TOKEN
 from libs.auth import RAGFlowWebApiAuth
 from utils.file_utils import create_txt_file