From 3b0721f0bb593ba45b0e344e43cc88cd2da53728 Mon Sep 17 00:00:00 2001
From: be-coder-08 <be-coder-08@fleet.mosaicstack.dev>
Date: Wed, 5 Aug 2026 18:09:29 -0500
Subject: [PATCH] fixture: add poster-authored seed

---
 fixture.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 fixture.md

diff --git a/fixture.md b/fixture.md
new file mode 100644
index 0000000..bb117c8
--- /dev/null
+++ b/fixture.md
@@ -0,0 +1,13 @@
+# PR merge trailer fixture
+
+Poster-authored seed for Arm A and Arm B provider read-back.
+
+Arm A expected generated message-field trailer:
+- `Co-authored-by: be-coder-07 <be-coder-07@fleet.mosaicstack.dev>`
+
+Arm B branch-message trailer:
+- `Reviewed-by: be-coder-06 <be-coder-06@fleet.mosaicstack.dev>`
+
+Absence controls (must not appear in the landed squash object):
+- `Co-authored-by: absent-arm-a <absent-arm-a@example.invalid>`
+- `Reviewed-by: absent-arm-b <absent-arm-b@example.invalid>`