diff --git a/AGENTS.md b/AGENTS.md
index 440f0c0..2f43bce 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -118,6 +118,23 @@ This applies to:
 
 Physics constants (9.81f, 3.6f, π) and documented model parameters (Phase 2 cutoff = 30s) are NOT arbitrary defaults — they are legitimate parts of the physical model.
 
+## 9. Git Commit Must Include DLL
+
+**Every commit must bundle the compiled CounterDrone.Core.dll.** Never leave DLL changes as a separate follow-up commit. The full commit flow:
+
+```bash
+# 1. Run full test suite (builds Core.dll)
+pwsh -Command "dotnet test test/unit/CounterDrone.Core.Tests/"
+
+# 2. Copy DLL to Unity plugin directories
+cp src/CounterDrone.Core/bin/Debug/netstandard2.1/CounterDrone.Core.dll src/Unity/Assets/Plugins/CounterDrone.Core/
+cp src/CounterDrone.Core/bin/Debug/netstandard2.1/CounterDrone.Core.dll unity_plugins/
+
+# 3. Commit everything at once
+git add -A
+git commit -m "..."
+```
+
 ---
 
 **These guidelines are working if:** fewer unnecessary changes in diffs, fewer rewrites due to overcomplication, and clarifying questions come before implementation rather than after mistakes.