Add client-aware telemetry tracer getter

[rbarbadillo]

Summary

• Add getTelemetryTracer(client, name, version?, options?) to the observability public surface
• Resolve tracers from the same client-aware provider source as SDK request tracing
• Preserve explicit global telemetry mode by bypassing registered providers when configured via configureTelemetry or env

Usage

import { Mistral } from "@mistralai/mistralai";
import {
  configureTelemetry,
  getTelemetryTracer,
} from "@mistralai/mistralai/extra/observability";

const client = new Mistral({ apiKey: process.env["MISTRAL_API_KEY"] ?? "" });

await configureTelemetry(client);

const tracer = getTelemetryTracer(client, "my-agent");

await tracer.startActiveSpan("invoke_agent", async (span) => {
  try {
    const toolResult = await runToolCall();

    return await client.chat.complete({
      model: "mistral-large-latest",
      messages: [
        { role: "user", content: `Tool returned: ${toolResult}` },
      ],
    });
  } finally {
    span.end();
  }
});

Tests

• pnpm --dir tests test -- extra/observability/telemetry.test.ts
• pnpm --dir tests test -- extra/observability/customProvider.test.ts
• pnpm --dir tests test -- extra/observability
• pnpm run build
• pnpm run lint