fix(e2e): allow dynamic multi-turn tool retries

[BlackishGreen33]

What

The dynamic-tools/multi-turn eval no longer requires exactly two matching echo_dynamic tool calls across the whole run.

The eval already checks the important behavior inside each turn:

• turn one calls echo_dynamic and gets dynamic-echo-ok-X7R2
• turn two calls echo_dynamic after session serialization and gets the same token

This fixes a valid retry case where the model calls the turn two tool more than once. In that case, the dynamic tool is still working, but the old run-wide times: 2 assertion fails because it sees three successful calls.

Closes #122.

How

Removed the final run-wide t.calledTool(ECHO_TOOL, { ..., times: 2 }) assertion from dynamic-tools/multi-turn.

The per-turn requireToolOutput(...) checks stay in place, so the eval still verifies that the dynamic tool survives across turns and returns the expected token each time.

Tests / changeset

• No changeset needed: this only changes an e2e fixture assertion, not the published eve package behavior.
• No runtime or assertion API changes.

Verification

• fnm exec --using v24.15.0 pnpm typecheck
• fnm exec --using v24.15.0 pnpm fmt
• fnm exec --using v24.15.0 pnpm lint
• fnm exec --using v24.15.0 pnpm build
• git diff --check

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