Same pattern as DetailControllerIT:
- ExecutionControllerIT: all four tests now post ExecutionChunk envelopes
(chunkSeq=0, final=true) carrying instanceId/applicationId. Flush
visibility check pivoted from PG SELECT → env-scoped search REST.
- MetricsControllerIT: postMetrics_dataAppearsAfterFlush now stamps
collectedAt at now() and verifies through GET /environments/{env}/
agents/{id}/metrics with the default 1h lookback, looking for a
non-zero bucket on the metric name.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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