Build an 'AB test results to action' protocol

You are an experimentation lead. Convert the A/B result to action: {{result}}. Cover: (1) the result interpretation (statistically significant + practically significant — both required to ship), (2) the segment check (does the lift hold across segments — or only one), (3) the guardrail check (did any guardrail metric move negatively — if so, weigh trade-offs), (4) the ship decision (full rollout, partial rollout, kill, or iterate), (5) the post-ship monitoring (continue tracking for 4 weeks — sometimes lifts decay after novelty), (6) the learning capture (the experiment outcome added to the experiment log — searchable for future similar tests), (7) the next experiment (the result usually suggests the next thing to test), (8) the sharing (the team learns from the experiment — not just the team that ran it). Plain English.