!feat(dtc):renamed Context and added DTC

[cnlangzi]

Changes

• renamed Context to Client
• added DTC

[sourcery-ai]

Hey @cnlangzi - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 2 issues found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good

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[sourcery-ai]

suggestion (code_clarification): Consider renaming Conn to a more descriptive name reflecting its responsibilities.

The name Conn typically suggests a simple connection object, but this struct includes complex behaviors and state management, which might be misleading.

Suggested change

	type Context struct {
	type DBContext struct {
	*sql.DB
	sync.Mutex
	_ noCopy
	Index int
	}

[sourcery-ai]

issue (performance): Review the fallback to context.Background() in ExecContext.

Using context.Background() as a fallback in ExecContext might lead to operations that do not respect caller's context cancellation or timeout. Consider handling this scenario explicitly.

[codecov]

Codecov Report

Attention: Patch coverage is 87.14286% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 76.65%. Comparing base (a6accdf) to head (119d860).

Files	Patch %	Lines
dtc.go	82.97%	4 Missing and 4 partials ⚠️
client.go	91.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #45      +/-   ##
==========================================
+ Coverage   76.09%   76.65%   +0.55%     
==========================================
  Files          43       44       +1     
  Lines        1782     1829      +47     
==========================================
+ Hits         1356     1402      +46     
+ Misses        307      304       -3     
- Partials      119      123       +4     

Flag	Coverage Δ
Unit-Tests	76.65% <87.14%> (+0.55%)	⬆️

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[deepsource-io]

Here's the code health analysis summary for commits a6accdf..119d860. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Go	✅ Success		View Check ↗

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