[tests] ensure message priority serialization

[capcom6]

Summary by CodeRabbit

• Documentation

  • Added release history covering MMS support, batch webhook delivery, authentication, encryption, and API capabilities.
  • Expanded configuration and usage guidance for authentication, custom clients, webhook signature verification, encryption, messaging formats, scheduling, TTL, delivery reports, and priority.

• Tests

  • Added coverage confirming message priority is serialized even when set to zero, preserving consistent message formatting.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Advanced

Run ID: b550393e-1d89-481c-b99f-f84030899c0a

📥 Commits

Reviewing files that changed from the base of the PR and between 15bcbff and 542788c.

📒 Files selected for processing (2)

• CHANGELOG.md
• README.md

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The pull request adds documentation for project releases, client configuration, supported features, webhook verification, and encryption. It also adds a test for zero-valued Message.priority serialization.

Changes

Message priority serialization

Layer / File(s)	Summary
Priority serialization coverage tests/types_test.rs	Adds test_message_priority_always_serialized, which serializes a default-priority Message and checks that JSON includes "priority":0.

Project documentation

Layer / File(s)	Summary
Release and usage documentation CHANGELOG.md, README.md	Adds release history and documents ClientConfig, authentication, custom clients and URLs, supported message features, webhook signature verification, and feature-gated encryption.

Priority: ⬇️ Low

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

Change: Other

Merge Risk: ⚪ Minimal · up to 54278

The changelog correctly documents the released v0.3.0 version, so no merge-blocking risk remains.

🚥 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 clearly and concisely describes the main change: adding a test for message priority serialization.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 1 files. (2 skipped: 2 …
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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