feat(qdrant):support qdrant cloud and add index

[fancyboi999]

Description

Summary: Support Qdrant Cloud config (url/api_key), auto-create common payload indexes, parse JSON string headers for the BGE reranker, and add product API smoke-test notes (source: #518).

Fix: Source#518

Docs Issue/PR: N/A

Reviewer: @CaralHsi

Checklist:

• I have performed a self-review of my own code | 我已自行检查了自己的代码
• I have commented my code in hard-to-understand areas | 我已在难以理解的地方对代码进行了注释
• I have added tests that prove my fix is effective or that my feature works | 我已添加测试以证明我的修复有效或功能正常
• I have created related documentation issue/PR in MemOS-Docs (if applicable) | 我已在 MemOS-Docs 中创建了相关的文档 issue/PR（如果适用）
• I have linked the issue to this PR (if applicable) | 我已将 issue 链接到此 PR（如果适用）
• I have mentioned the person who will review this PR | 我已提及将审查此 PR 的人

[Copilot]

Pull request overview

This PR adds support for Qdrant Cloud configuration, automatic payload indexing, and improved error handling for cloud deployments. It enables the use of cloud-hosted Qdrant instances via URL and API key configuration, while maintaining backward compatibility with local/embedded deployments.

Key Changes:

• Added Qdrant Cloud support with url and api_key configuration options that take priority over local host/port/path settings
• Implemented automatic creation of payload indexes for common filter fields (memory_type, status, vector_sync, user_name) to improve query performance
• Added JSON string parsing for reranker headers_extra configuration to support environment variable configuration

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/memos/configs/vec_db.py	Added url and api_key fields to QdrantVecDBConfig for cloud support
src/memos/vec_dbs/qdrant.py	Refactored client initialization to support cloud mode, added automatic payload index creation, improved error handling for cloud-specific collection creation scenarios
src/memos/api/config.py	Added environment variable support for QDRANT_PATH, QDRANT_URL, and QDRANT_API_KEY
src/memos/reranker/factory.py	Added JSON parsing for headers_extra string configuration to support environment variable usage
tests/configs/test_vec_db.py	Added test case validating cloud configuration with url and api_key fields
tests/vec_dbs/test_qdrant.py	Added test verifying correct QdrantClient initialization with cloud parameters
docker/.env.example	Extensively updated with comprehensive environment variable documentation including Qdrant cloud configuration
docs/product-api-tests.md	Added smoke test documentation for product APIs including notes on payload index requirements

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[Copilot]

Missing QDRANT_PATH environment variable documentation. This variable is used in src/memos/api/config.py (line 503) but is not documented here. Consider adding it after QDRANT_PORT for completeness:

QDRANT_PATH=                              # local/embedded path (optional)

Suggested change

	QDRANT_PORT=6333
	QDRANT_PORT=6333
	QDRANT_PATH= # local/embedded path (optional)

[Copilot]

The except Exception block is redundant as it only re-raises the exception without adding any value. Consider removing lines 101-103 entirely, as the exception will naturally propagate without this catch-and-rethrow pattern.

Suggested change

	except Exception:
	# Bubble up other exceptions so callers can observe failures
	raise

[Copilot]

The exception handling silently swallows JSON parsing errors and sets headers_extra to None. This could hide configuration mistakes. Consider adding logging to help users debug invalid configurations. You'll need to import the logger first:

from memos.log import get_logger

logger = get_logger(__name__)

Then update the exception handler:

except Exception as e:
    logger.warning(f"Failed to parse headers_extra as JSON: {e}. Using None instead.")
    headers_extra = None