Preview 5 release preparations

[michelebastione]

This PR removes the MiniExcel.OpenXml.FluentMapping project reference from the main MiniExcel project, turning it into a completely optional plugin that consumers of the library have to explicitly add to their dependencies to use.
The projects' versions have also been bumped to 2.0.0-preview.5 for the upcoming release.

Summary by CodeRabbit

• Updates
  • The fluent mapping provider extensions are now available in the MiniExcelLib.OpenXml.FluentMapping namespace. Update imports that use the former .Api namespace.
  • The preview package version has been updated to 2.0.0-preview.5.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Essentials
• Run ID: 58778827-6cb0-43ad-bb26-9d46cfa72be3

📥 Commits

Reviewing files that changed from the base of the PR and between 46f95cd and 7f16c9d.

📒 Files selected for processing (10)

• benchmarks/MiniExcel.Benchmarks/BenchmarkSections/CreateExcelBenchmark.cs
• benchmarks/MiniExcel.Benchmarks/BenchmarkSections/QueryExcelBenchmark.cs
• benchmarks/MiniExcel.Benchmarks/BenchmarkSections/TemplateExcelBenchmark.cs
• benchmarks/MiniExcel.Benchmarks/MiniExcel.Benchmarks.csproj
• src/Directory.Build.props
• src/MiniExcel.Core/MiniExcel.cs
• src/MiniExcel.OpenXml.FluentMapping/Api/ProviderExtensions.cs
• src/MiniExcel/MiniExcel.csproj
• tests/MiniExcel.OpenXml.Tests/FluentMapping/MiniExcelMappingTemplateTests.cs
• tests/MiniExcel.OpenXml.Tests/FluentMapping/MiniExcelMappingTests.cs

💤 Files with no reviewable changes (6)

• tests/MiniExcel.OpenXml.Tests/FluentMapping/MiniExcelMappingTemplateTests.cs
• src/MiniExcel/MiniExcel.csproj
• benchmarks/MiniExcel.Benchmarks/BenchmarkSections/QueryExcelBenchmark.cs
• tests/MiniExcel.OpenXml.Tests/FluentMapping/MiniExcelMappingTests.cs
• benchmarks/MiniExcel.Benchmarks/BenchmarkSections/CreateExcelBenchmark.cs
• benchmarks/MiniExcel.Benchmarks/BenchmarkSections/TemplateExcelBenchmark.cs

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📝 Walkthrough

Walkthrough

The FluentMapping extension methods moved to the parent namespace. Project references and imports changed to match. The configured package version changed from 2.0.0-preview.4 to 2.0.0-preview.5.

Changes

FluentMapping namespace migration

Layer / File(s)	Summary
Namespace and consumer updates src/MiniExcel.OpenXml.FluentMapping/Api/ProviderExtensions.cs, src/MiniExcel/MiniExcel.csproj, benchmarks/MiniExcel.Benchmarks/MiniExcel.Benchmarks.csproj, benchmarks/MiniExcel.Benchmarks/BenchmarkSections/*, tests/MiniExcel.OpenXml.Tests/FluentMapping/*	The extension methods moved to the parent FluentMapping namespace. The MiniExcel project reference was removed, the benchmark project reference was added, and benchmark and test imports were updated.

Package version update

Layer / File(s)	Summary
Configured package version src/Directory.Build.props	The configured package version changed from 2.0.0-preview.4 to 2.0.0-preview.5.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Feature

Merge Risk: ⚪ Minimal · up to 7f16c

This release-preparation change keeps FluentMapping available to projects that reference it explicitly and removes no used Core code. No concrete merge-blocking regression is evident; it appears ready after normal checks.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title describes the release-preparation changes, including the Preview 5 version bump and FluentMapping dependency changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create a new PR

• Autopilot · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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