📝 Add docstrings to codex/implement-optional-dead-letter-queue

[coderabbitai]

Docstrings generation was requested by @leynos.

• Implement push queue DLQ #198 (comment)

The following files were modified:

• src/app.rs
• src/push.rs
• tests/push.rs
• tests/push_policies.rs
• wireframe_testing/src/logging.rs

These file types are not supported

• docs/asynchronous-outbound-messaging-design.md
• docs/asynchronous-outbound-messaging-roadmap.md
• docs/hardening-wireframe-a-guide-to-production-resilience.md
• docs/rust-testing-with-rstest-fixtures.md
• docs/wireframe-1-0-detailed-development-roadmap.md
• wireframe_testing/Cargo.toml

ℹ️ Note

CodeRabbit cannot perform edits on its own pull requests yet.

Summary by Sourcery

Add documentation comments with usage examples to core API functions, builder methods, push queue APIs, and test fixtures to improve code readability and maintainability

Enhancements:

• Add docstrings and examples to test fixtures, helper functions, and parameterized test cases covering push queue policies, rate limiting, and dead letter queue behavior
• Document WireframeApp builder methods (default, on_connection_setup, with_protocol, dead-letter queue configuration, serializer) with detailed descriptions and examples
• Add docstrings to PushQueues and PushHandle APIs, including constructors, push methods, DLQ routing, and error handling, with usage examples
• Document LoggerHandle methods and logger fixture in wireframe_testing for exclusive logger access and safe log capture in tests

[sourcery-ai]

Reviewer's Guide

This PR systematically adds comprehensive Rustdoc comments across test modules, core application builders, push API, and the testing logger, ensuring all fixtures, public methods, and helpers are documented with usage examples, parameter descriptions, and behavioral details.

File-Level Changes

Change	Details	Files
Add docstrings to test fixtures and DLQ policy tests	Documented the single-threaded Tokio runtime fixture (rt) Added descriptions and parameter details to push_policy_behaviour Documented dropped_frame_goes_to_dlq behavior and examples Annotated DLQ helper functions (setup_dlq_full, setup_dlq_closed) Described assertion helpers (assert_dlq_full, assert_dlq_closed) Documented the parameterized DLQ error handling test cases	tests/push_policies.rs
Add docstrings to rate limiter tests in push.rs	Documented blocking behavior in rate_limiter_blocks_when_exceeded Added example and behavior summary to rate_limiter_allows_after_wait Described shared rate limiting in rate_limiter_shared_across_priorities Annotated burst capacity enforcement in rate_limiter_allows_burst_within_capacity_and_blocks_excess	tests/push.rs
Add docstrings to WireframeApp builder methods	Documented default() initialization and usage example Added parameter, return type, and example for on_connection_setup Described protocol installation in with_protocol Annotated dead-letter queue configuration method Documented custom serializer setup via serializer	src/app.rs
Add docstrings to push API and constructors	Documented PushConfigError Display formatting Annotated push_low_priority semantics and error conditions Described route_to_dlq behavior on full or closed DLQ Explained unified push logic in push_with_priority Documented queue constructors (bounded, unlimited, rate-limited, DLQ-enabled)	src/push.rs
Add docstrings to LoggerHandle and logger fixture	Described exclusive access and usage in LoggerHandle::new Annotated read-only and mutable access via Deref and DerefMut Documented the logger test fixture for safe log capture	wireframe_testing/src/logging.rs

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