[FOWEPJF255]

Summary

• expose the optional elicitation toolCallId on Rust ElicitationRequest
• forward the generated event field to ElicitationHandler
• cover the handler dispatch path with a correlation assertion

Fixes #2900.

Root cause

ElicitationRequestedData already deserializes the optional toolCallId, but the handwritten ElicitationRequest type did not expose it and Session::handle_notification omitted it when constructing the handler request. Hosts therefore could not associate a pending form with the tool invocation that raised it.

Validation

• regression-only baseline on c74ef966: failed to compile with E0609: no field tool_call_id on type ElicitationRequest
• cargo test --offline --no-default-features --features test-support --test session_test elicitation_requested_dispatches_to_handler_and_responds (Rust 1.99.1, Linux): 1 passed
• cargo check --offline --no-default-features --features local-runtime (Rust 1.99.1, Linux)
• cargo +stable fmt --all -- --config-path .rustfmt.toml --check
• git diff --check

The repository's pinned AHP rust/v1.0.0 source was supplied locally from the exact tagged commit only to work around a transient Git transport timeout; no dependency or lockfile change is included.

[Copilot]

🟢 Approval recommended

No active review issues remain, and the regression assertion covers forwarding the optional tool-call ID to the handler.

No open issues 🎉

What changed in this PR

This pull request preserves the optional elicitation tool-call ID in Rust by exposing it on ElicitationRequest and forwarding it to the registered handler.

Changes:

• Added the optional tool_call_id field to the Rust elicitation request type.
• Forwarded the event’s tool-call ID during session notification handling.
• Added a regression assertion covering handler correlation.

File	Description
rust/​tests/​session_test.rs	Verifies the handler receives the expected tool-call ID.
rust/​src/​types.rs	Adds the optional tool_call_id field to ElicitationRequest.
rust/​src/​session.rs	Propagates the event’s tool-call ID to the handler request.

This pull request is ready to be approved.

_{Review effort: Lite (auto)}