fix(tool-executor): thread the executed tool call into the hook context

[w0nche0l]

Problem

TurnContext.toolCall is part of the tool-facing contract ("The specific tool call being executed"), but only the non-streaming tool-orchestrator path ever populated it. The streaming ModelResult loop builds its per-round turn context as { numberOfTurns } only, and buildExecuteCtx received the toolCall as a parameter at every call site without merging it into the execute context — so execute / onToolCalled hooks saw context.toolCall === undefined on the code path most consumers actually run.

Found deterministically by an OpenRouter router e2e (DEV-763): a HITL tool keys suspensions on context.toolCall.callId and failed on every streaming run with its contract-violation guard.

Fix

buildExecuteCtx now threads the executed call:

• a caller-provided turnContext.toolCall wins (the orchestrator's is richer — it carries status);
• otherwise the executed ParsedToolCall is converted back to the wire-shaped FunctionCallItem (id/callId = the wire call id, parsed arguments re-serialized) and fills the gap;
• the onResponseReceived path threads nothing — only the function_call_output item is in scope there, and fabricating call arguments would lie to the hook. A caller-provided turn-context toolCall still flows through.

Tests

Two regressions in hitl-tool.test.ts: a streaming-shaped turn context (numberOfTurns only) delivers the synthesized FunctionCallItem to onToolCalled, and a caller-provided turn-context toolCall is preferred untouched. Full unit suite: 645 tests green, typecheck + biome clean.

Downstream

openrouter-web pins @openrouter/agent@0.7.2 with an existing patch file; once this lands and releases, the monorepo can pick it up with a version bump (or extend its patch in the interim).

Made with Cursor

[w0nche0l]

is this necessary? i don't think it is, we should remove it.

[LukasParke]

What do you mean? There is another package? This is a monorepo

[w0nche0l]

yeah, exactly, i think an agent added this while it was trying to debug.

[w0nche0l]

removed these changes!