From 58aa8e1ba56a4817fcccffd234a8533257ba8cdf Mon Sep 17 00:00:00 2001
From: Mark Backman <mark@daily.co>
Date: Sat, 28 Feb 2026 14:05:25 -0500
Subject: [PATCH] Add changelog for #3881

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+- Added `StartupTimingObserver` for measuring how long each processor's `start()` method takes during pipeline startup. Useful for diagnosing cold start slowness and identifying initialization bottlenecks.