fix(service-ai): yield tool-result events in streamChatWithTools SSE stream

[Copilot]

streamChatWithTools emitted tool-call (tool-input-available) events but never yielded the corresponding tool-result — results were only pushed to the conversation array. The encoder already mapped tool-result → tool-output-available; it just was never invoked.

Changes

• ai-service.ts: Yield each ToolExecutionResult as a tool-result stream part before appending it to the conversation

for (const tr of toolResults) {
  // ... error handling ...
  yield {
    type: 'tool-result',
    toolCallId: tr.toolCallId,
    toolName: tr.toolName,
    output: tr.output,
  } as TextStreamPart<ToolSet>;
  conversation.push({ role: 'tool', content: [tr] } as ModelMessage);
}

• auth-and-toolcalling.test.ts: Added assertions for tool-result presence/ordering in the existing streaming test; added a dedicated test validating tool output content round-trips correctly

[vercel]

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Project	Deployment	Actions	Updated (UTC)
objectstack-play	Ready	Preview, Comment	Apr 8, 2026 9:29am
spec	Ready	Preview, Comment	Apr 8, 2026 9:29am

[Copilot]

Pull request overview

Fixes AIService.streamChatWithTools() so it emits tool-result stream parts (in addition to tool-call) during SSE-style streaming, enabling clients to receive tool outputs as they become available.

Changes:

• Yield tool-result events for each executed tool before appending the tool message back into the conversation loop.
• Extend streaming tests to assert tool-result presence and validate that tool output content round-trips correctly.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
packages/services/service-ai/src/ai-service.ts	Emits tool-result stream parts during the tool-resolution loop so tool outputs are visible to SSE clients.
packages/services/service-ai/src/tests/auth-and-toolcalling.test.ts	Adds assertions for tool-result events and introduces a dedicated test verifying tool output and event ordering.