diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644
index 0000000..c9cc077
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,8 @@
+# Revisions to skip in `git blame` — bulk, mechanical reformatting only.
+# Each entry must be a pure formatting/no-behavior-change commit.
+#
+# Enable locally:  git config blame.ignoreRevsFile .git-blame-ignore-revs
+# GitHub honors this file automatically.
+
+# Format entire codebase with Prettier (mechanical, no behavior change)
+0c7297624e5a5ce6360ad52ccaaeb6ce2685454f