test: add fault injection test for abrupt client crash during write

[emersonbusson]

Summary

Added fault injection test simulating an abrupt client crash (SIGKILL/broken pipe) during an active multi-megabyte write, to ensure BrokerCore correctly implements failsafe defaults and properly freezes, then eventually cleans up leases after TTL. This fulfills the ipc-resilience pillar requirements.

Commits

Commit	Files	Validation	Risk/rollback
cc4ad3a	Files crates/ramshared-wsl2d/src/broker_srv.rs	Validation cargo test -p ramshared-wsl2d broker_srv passes cargo clippy -- -D warnings passes	Risk/rollback Risk: Low. Only test code was added. Rollback trigger: Test failure.

Issue

Fixes #4

Owner

ResilienceChaos100

Labels

type:test, area:ramshared

Validation

cargo test -p ramshared-wsl2d broker_srv runs correctly.
cargo clippy -- -D warnings runs without warnings.

Rollback trigger

Test failure.

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PR created automatically by Jules for task 12531414567457037606 started by @emersonbusson

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[emersonbusson]

Closed in favor of PR #2085 consolidation.

[google-labs-jules]

Closed in favor of PR #2085 consolidation.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.