semantic naming accuracy

Ensure that method, variable, and class names accurately reflect their actual behavior, purpose, or content. Names should semantically match what they represent to prevent confusion and bugs.

Key principles:

• Method names should match their actual behavior: detachX() should perform get + cancel, not just cancel
• Variable names should reflect their content: patch_block_indices not patch_col_indices when indexing blocks
• Class names should accurately describe their function: Serialization not Compression when the class handles serialization
• Method names should be descriptive of their purpose: shouldSearchForPartsOnDisk() not lookOnDisk()
• Use consistent, accurate terminology throughout: disk not drive when referring to storage disks

Example of problematic vs. corrected naming:

// Problematic - method name doesn't match behavior
void detachParallelReadingExtension(); // actually just clears/cancels

// Corrected - name matches actual behavior  
void clearParallelReadingExtension(); // or implement proper detach semantics

// Problematic - variable name doesn't match content
PaddedPODArray<UInt64> patch_col_indices; // actually indexes blocks

// Corrected - name matches content
PaddedPODArray<UInt64> patch_block_indices;

This prevents misunderstandings about code behavior and makes the codebase more maintainable by ensuring names serve as accurate documentation of functionality.