docs: prepare v0.2.1-beta release

[D1a0y1bb]

Summary

• bump local preview version and generated Xcode project to 0.2.1-beta build 27
• add v0.2.1-beta release notes for the beta channel

Validation

• git diff --check
• xcodegen generate --spec PitcherPlantApp/project.yml
• swift test --package-path PitcherPlantApp
• xcodebuild -project PitcherPlantApp/PitcherPlantApp.xcodeproj -scheme PitcherPlantApp -configuration Debug -destination 'platform=macOS' build

Summary by CodeRabbit

• New Features & Improvements

  • Enhanced audit assistant with improved configuration and provider/model handling
  • Settings and localization refinements
  • Reports and evidence review enhancements
  • Improved workspace launch behavior
  • Data safety improvements via provider-specific external request controls

• Chores

  • Version updated to 0.2.1-beta

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: f4d69ecb-c1c5-4c4a-8b03-d9d8d01f2e34

📥 Commits

Reviewing files that changed from the base of the PR and between cc98fed and 073698c.

📒 Files selected for processing (3)

• PitcherPlantApp/PitcherPlantApp.xcodeproj/project.pbxproj
• PitcherPlantApp/ReleaseNotes/v0.2.1-beta.md
• PitcherPlantApp/project.yml

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📝 Walkthrough

Walkthrough

This PR releases PitcherPlant v0.2.1-beta, a maintenance release that increments build versioning across configuration files and documents the release changes in comprehensive release notes covering audit assistant improvements, data safety enhancements, and distribution workflow details.

Changes

v0.2.1-beta Release Preparation

Layer / File(s)	Summary
Version configuration updates PitcherPlantApp/project.yml, PitcherPlantApp/PitcherPlantApp.xcodeproj/project.pbxproj	Build version incremented from 26 to 27 and marketing version updated from 0.2.0-beta to 0.2.1-beta in both the YAML project configuration and Xcode project settings (Debug and Release configurations).
Release notes documentation PitcherPlantApp/ReleaseNotes/v0.2.1-beta.md	Comprehensive release notes document added detailing release metadata, user-facing changes to audit assistant (provider/model handling, data-sharing controls), localization improvements, report review behavior, workspace launch updates, audit data safety and external request handling, persistence and legacy compatibility, update pipeline behavior, pre-release validation steps, distribution notes (signing, notarization, Sparkle updates), and known issues.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A version bump hops into view,
From point-two-oh to point-two-one so true,
Release notes bloom like pitcher plants in spring,
Each petal a feature, validation to bring! 🌿

🚥 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 accurately summarizes the main changes: version bumps to 0.2.1-beta and release notes preparation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch D1a0y1bb/release-v0.2.1-beta

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