chore(master): release 2.4.0

[Alpaq92]

🤖 I have created a release beep boop

2.4.0 (2026-07-17)

Features

• api: UTF-8 ingress (AppendUtf8/FromUtf8) and Argon2id calibrator (4b6cbf0)
• json: TopSecret.ProtectedString.Json — bind a JSON string into a ProtectedString (9d20daa)
• security: page-guarded key tier, fork hardening, working-set retry, and Obscurity-by-default (0d2542c)

Documentation

• GuardedPage tier, JSON binding, UTF-8 ingress, calibrator, and TPS003 across the doc set (e18d937)

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This PR was generated with Release Please. See documentation.

Summary by CodeRabbit

• New Features
  • Added UTF-8 ingress APIs and JSON string binding.
  • Improved security with page-guarded key tiers, stronger fork protection, working-set retry handling, and “Obscurity-by-default.”
• Documentation
  • Updated guidance for the new APIs, security enhancements, and TPS003.
• Release
  • Published version 2.4.0 on July 17, 2026.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: 1495992d-4b0d-4687-b79a-2e2be129454f

📥 Commits

Reviewing files that changed from the base of the PR and between e18d937 and 1b2c4cb.

📒 Files selected for processing (2)

• .release-please-manifest.json
• CHANGELOG.md

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📝 Walkthrough

Walkthrough

The release manifest version is updated from 2.3.1 to 2.4.0, and a dated 2.4.0 changelog entry is added with feature and documentation notes.

Changes

Release 2.4.0

Layer / File(s)	Summary
Release metadata and changelog .release-please-manifest.json, CHANGELOG.md	The package version is bumped to 2.4.0, and the changelog adds the 2026-07-17 release entry with feature and documentation items.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• Alpaq92/TopSecret.ProtectedString#21: Updates release metadata and adds a corresponding top changelog entry.

🚥 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 release bump to version 2.4.0 and matches the changelog and manifest updates.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch release-please--branches--master

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[Alpaq92]

🤖 Created releases:

• v2.4.0

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