implemented new fault system

[carlsverre]

The new fault system allows faults to be turned on/off by name or to force the next fault trip to trigger. This makes it easier to use faults in integration tests where you may want to force a specific fault to trigger.

[Copilot]

Pull request overview

This PR implements a new fault injection system that replaces probability-based faults with a more controllable mechanism. The system allows faults to be enabled/disabled by name and supports forcing specific fault triggers, making it more suitable for integration testing scenarios.

Key changes:

• Introduced a new FaultEntry structure with enable/disable and forced-trip capabilities via atomic operations
• Renamed maybe_fault! macro to sometimes_fault! and removed the probability parameter
• Added fault catalog initialization and lookup functions (get_fault_by_name, enable_all, disable_all)

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
src/fault.rs	New module implementing the fault catalog and FaultEntry structure with atomic-based control mechanisms
src/macros.rs	Updated fault macro from maybe_fault to sometimes_fault, removed probability parameter, integrated with new fault system
src/macros_stubs.rs	Renamed stub macro to match new sometimes_fault naming
src/lib.rs	Integrated fault initialization into the main init flow, removed old global fault enable/disable functions
src/dispatch.rs	Added choose helper function for random selection from slices
src/random.rs	Removed inline attributes from RngCore implementation
src/catalog.rs	Fixed grammatical error in comment ("it's" → "its")
src/dispatch/antithesis.rs	Fixed spelling error ("initalization" → "initialization")
src/dispatch/test.rs	Removed inline attribute from random method
src/dispatch/noop.rs	Removed inline attribute from random method
.zed/settings.json	Added editor-specific configuration (non-code change)

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.