Add retry/redeliver to mocha

[PascalSenn]

No description provided.

[Copilot]

Pull request overview

This PR introduces first-class immediate retry (consumer pipeline) and delayed redelivery (receive pipeline) to Mocha, including configuration APIs, middleware implementations, documentation updates, and in-memory transport test coverage.

Changes:

• Add Polly-based consumer retry middleware with configurable backoff, intervals, and exception filtering.
• Add receive-pipeline redelivery middleware that schedules failed messages for later delivery and tracks redelivery count via headers.
• Update reliability documentation, demo apps, and add in-memory transport tests for retry/redelivery.

Reviewed changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
website/src/docs/mocha/v1/reliability.md	Documents retry/redelivery concepts, configuration, and pipeline ordering.
src/Mocha/test/Mocha.Transport.InMemory.Tests/Behaviors/RetryTests.cs	Adds in-memory tests for retry behavior, overrides, and retry state exposure.
src/Mocha/test/Mocha.Transport.InMemory.Tests/Behaviors/RedeliveryTests.cs	Adds in-memory tests for redelivery scheduling, defaults, and overrides.
src/Mocha/src/Mocha/Middlewares/Receive/Redelivery/RedeliveryOptions.cs	Adds redelivery options model + exception filtering rules.
src/Mocha/src/Mocha/Middlewares/Receive/Redelivery/RedeliveryFeature.cs	Adds feature wrapper to expose/hold redelivery configuration.
src/Mocha/src/Mocha/Middlewares/Receive/Redelivery/RedeliveryConfigurationExtensions.cs	Adds .AddRedelivery() builder/descriptor extension methods.
src/Mocha/src/Mocha/Middlewares/Receive/Redelivery/ReceiveRedeliveryMiddleware.cs	Implements delayed redelivery (scheduling + header tracking + ignore rules).
src/Mocha/src/Mocha/Middlewares/Receive/ReceiveMiddlewares.cs	Registers redelivery middleware configuration.
src/Mocha/src/Mocha/Middlewares/Extensions/MiddlewareConfigurationExtensions.cs	Prevents duplicate consumer middleware registration by key during prepend.
src/Mocha/src/Mocha/Middlewares/Consume/Retry/RetryState.cs	Introduces retry state feature exposed to handlers.
src/Mocha/src/Mocha/Middlewares/Consume/Retry/RetryOptions.cs	Adds retry options model + exception filtering rules.
src/Mocha/src/Mocha/Middlewares/Consume/Retry/RetryFeature.cs	Adds feature wrapper to expose/hold retry configuration.
src/Mocha/src/Mocha/Middlewares/Consume/Retry/RetryConfigurationExtensions.cs	Adds .AddRetry() builder/descriptor extension methods.
src/Mocha/src/Mocha/Middlewares/Consume/Retry/RetryBackoffType.cs	Adds retry backoff type enum.
src/Mocha/src/Mocha/Middlewares/Consume/Retry/ExceptionRuleMatcher.cs	Implements “most-specific-type-wins” exception ignore matching.
src/Mocha/src/Mocha/Middlewares/Consume/Retry/ExceptionRule.cs	Adds internal exception rule representation.
src/Mocha/src/Mocha/Middlewares/Consume/Retry/ExceptionPolicyBuilder.cs	Adds fluent On<T>().Ignore() builder.
src/Mocha/src/Mocha/Middlewares/Consume/Retry/ConsumerRetryMiddleware.cs	Implements Polly-based retry middleware and exposes RetryState.
src/Mocha/src/Mocha/Middlewares/Consume/ConsumerMiddlewares.cs	Registers retry middleware configuration.
src/Mocha/src/Mocha/Headers/MessageHeaders.cs	Adds delayed-retry-count header key under MessageHeaders.Retry.
src/Mocha/src/Mocha/Extensions/IMessageBusHostBuilderExtensions.cs	Adds host-builder overloads enabling per-consumer configuration at registration.
src/Mocha/src/Demo/Demo.Shipping/Program.cs	Enables retry + redelivery in demo shipping service.
src/Mocha/src/Demo/Demo.Catalog/Program.cs	Enables retry + redelivery in demo catalog service.
src/Mocha/src/Demo/Demo.Billing/Program.cs	Enables retry + redelivery in demo billing service.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (f107863) to head (c576caf).
⚠️ Report is 21 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff      @@
##   main   #9494   +/-   ##
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