## Summary
- Adds a trivial always-on observable gauge (`twenty.heartbeat = 1`) so
the OTLP exporter fires on every 10s collection tick, even on idle pods.
Without this, `PeriodicExportingMetricReader` skips the export when
`scopeMetrics` is empty, so the process-log wrapper never runs and we
can't prove OTLP connectivity.
- Adds a one-time "first periodic export attempt" log line inside the
wrapped exporter, completing the startup log sequence: `OTLP reader
enabled` → `first periodic export attempt` → `first export ok` / `export
failed`.
Co-authored-by: Cursor <cursoragent@cursor.com>
