[zhangzhenghao]

Summary

Follow up on #1416 by auditing connection-option forwarding across storage backends.

• Milvus: forward URI credentials and database path; support username, password, dbName, apiKey, enableTLSAuth and dialTimeout query options.
• Weaviate: support apiKey, timeout and startupTimeout while preserving HTTP/HTTPS scheme selection.
• Validate boolean/duration/query values without overriding omitted SDK defaults.
• Add standalone parsing tests and update compact URI examples.
• SQL, MongoDB and Redis already forward parsed client options; retain their intentional application overrides. Blob locators use separate connection configuration and are outside this change.

Validation

• gofmt and git diff --check completed.
• Per maintainer request, local testing was stopped and no passing final-patch test run is claimed. The initial Weaviate test attempt before implementation failed because the new parser did not yet exist.
• CI is pending.

[codecov]

Codecov Report

❌ Patch coverage is 93.44262% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.44%. Comparing base (a070459) to head (f3ac0f2).

Files with missing lines	Patch %	Lines
storage/vectors/milvus.go	91.42%	3 Missing ⚠️
storage/vectors/weaviate.go	96.15%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1417      +/-   ##
==========================================
+ Coverage   78.17%   78.44%   +0.27%     
==========================================
  Files          93       93              
  Lines       16699    16746      +47     
==========================================
+ Hits        13055    13137      +82     
+ Misses       3644     3609      -35     

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