chore: apply go fix improvements

[echarrod]

Apply go fix to modernize the codebase:

• Add missing imports
• Optimize string concatenation using strings.Builder (performance improvement over concatenation loops)
• Use Go 1.22 range-over-int syntax (for i := range N instead of for i := 0; i < N; i++)

Summary by CodeRabbit

This release includes extensive internal code modernisation across the codebase, improving consistency and maintainability.

• Refactor

  • Standardised implementation patterns for consistency and clarity across modules

• Tests

  • Simplified iteration constructs in test code
  • Enhanced concurrency handling in concurrent tests
  • Improved overall test readability and maintainability

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 5d21d08b-088a-4b59-80d6-bb621bb3bf88

📥 Commits

Reviewing files that changed from the base of the PR and between c2cbc03 and e05299f.

📒 Files selected for processing (1)

• rsql/helpers_test.go

📝 Walkthrough

Walkthrough

This pull request modernises Go code patterns across 15+ files in the codebase. The changes include converting traditional for i := 0; i < n; i++ loops to for range n syntax, replacing interface{} type annotations with the any alias, updating concurrency patterns from manual Add(1)/Done() calls to wg.Go() methods, and refactoring MySQL error detection to use slices.Contains. These updates affect both test and production code, focusing on consistency with contemporary Go idioms and standard library improvements.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Suggested labels

AI::Created

Suggested reviewers

• ScaleneZA
• RieshBissessur
• andrewwormald

Poem

🐰 Hop, hop—loops now range so free,
Ancient interface{} fades to memory,
any aliases dance, wg.Go() takes flight,
Modernised patterns, shining bright!
Go idioms gleam—the future is here. ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 25.93% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarises the main change: applying go fix improvements to modernise the codebase across multiple files.
Description check	✅ Passed	The description clearly relates to the changeset, detailing the specific improvements applied: missing imports, strings.Builder optimisation, and Go 1.22 range-over-int syntax.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch echarrod/go-fix-improvements

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@rsql/helpers_test.go`:
- Around line 48-49: The helper assertEqualI2S forwards a variadic msgAndArgs
slice to testify's assert.Equal but doesn't expand it, so the messages are
passed as a single argument; update the call in assertEqualI2S to pass
msgAndArgs... (i.e., expand the variadic) when calling assert.Equal(t,
i2s(expected), actual, msgAndArgs...) so testify can interpret assertion
messages correctly.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: d3c88004-3e41-4780-bf1d-3f2303f4a0aa

📥 Commits

Reviewing files that changed from the base of the PR and between 5d0291c and c2cbc03.

📒 Files selected for processing (17)

• internal/metrics/metrics_test.go
• rblob/blob.go
• rblob/blob_test.go
• rpatterns/batch_test.go
• rpatterns/concurrent.go
• rpatterns/concurrent_test.go
• rpatterns/cursor_test.go
• rpatterns/deadletter_test.go
• rpatterns/parallel.go
• rpatterns/sequence.go
• rsql/cursorstable.go
• rsql/cursorstable_test.go
• rsql/db.go
• rsql/db_test.go
• rsql/eventstable_test.go
• rsql/helpers_test.go
• rsql/stream_test.go

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
88.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud