fix(errors): keep location-less Effect span frames out of the fingerprint - #1493

🟢 Confidence 10/10 · safe to merge
Only new hunk is a test layer-wiring refactor; the assertions it drives are unchanged and the merged layer type is unaffected.
_{quality 100/100 · no findings · tests covered · risk low}

The delta since the previous review is a test-only refactor: Telemetry.test.ts now builds the telemetry layer inside the ingest layer with Layer.provideMerge instead of providing them separately. Nothing production-side changed; safe to merge.

• Telemetry.test.ts provides ingest and telemetry through one Layer.provideMerge

Before merge

• Migration · Check it is safe on production data and with the code still deployed · packages/domain/src/clickhouse/migrations/0040_error_fingerprint_span_name_frames.ts

_{b796a0e · Updated on every push. Reply "won't fix" to dismiss a finding, or mention @maple-review-bot to ask about one.}