fix: avoid cyclic import

[kemingy]

No description provided.

[Copilot]

Pull Request Overview

This PR resolves a cyclic import issue by moving the VechordPipeline class from vechord/pipeline.py to vechord/registry.py and updating all relevant imports and type annotations. The change breaks the circular dependency that existed between the registry and pipeline modules.

Key changes:

• Moved VechordPipeline class definition from pipeline.py to registry.py
• Updated imports in pipeline.py to remove circular dependency
• Simplified the main module's __init__.py exports

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
vechord/registry.py	Added VechordPipeline class definition and imported limit_to_transaction_buffer_conn
vechord/pipeline.py	Removed VechordPipeline class and updated type annotations to use direct imports
vechord/init.py	Simplified exports by removing most component imports while keeping core functionality

Comments suppressed due to low confidence (1)

vechord/pipeline.py:74

• This logic assumes there are at least 2 steps in the pipeline. If there's only 1 step, self.steps[-1] on line 75 will execute the same function twice (once as steps[0] on line 72, then again as steps[-1]). Consider adding validation for minimum pipeline length.

class KeywordSearchOption(msgspec.Struct, kw_only=True):