Add withTelemetry helper to reduce Sentry instrumentation boilerplate

[BYK]

Summary

Add a withTelemetry helper function to reduce boilerplate code when wrapping functions with Sentry spans.

Motivation

Currently, Sentry span instrumentation requires verbose boilerplate:

function myFunction(arg: string): Promise<Result> {
  return Sentry.startSpan(
    {
      name: "myFunction",
      op: "some.operation",
      attributes: { "some.attr": arg },
      onlyIfParent: true,
    },
    async (span) => {
      try {
        const result = await doWork(arg);
        span.setStatus({ code: 1 });
        return result;
      } catch (error) {
        span.setStatus({ code: 2 });
        throw error;
      }
    }
  );
}

Proposed Solution

Create a helper similar to Spotlight's withTelemetry:

function withTelemetry<T>(
  name: string,
  op: string,
  fn: () => T | Promise<T>,
  attributes?: Record<string, string | number | boolean>
): Promise<T> {
  return Sentry.startSpan(
    { name, op, attributes, onlyIfParent: true },
    async (span) => {
      try {
        const result = await fn();
        span.setStatus({ code: 1 });
        return result;
      } catch (error) {
        span.setStatus({ code: 2 });
        throw error;
      }
    }
  );
}

Files to Update

• src/lib/dsn/code-scanner.ts - scanDirectory
• src/lib/dsn/project-root.ts - withFsSpan, findProjectRoot
• Any other files with similar Sentry span patterns

References

• PR feat(dsn): add project root detection for automatic DSN discovery #159 review comment requesting this improvement