diff --git a/tests/fixtures/audio/.gitkeep b/tests/fixtures/audio/.gitkeep
new file mode 100644
index 00000000..b6295af2
--- /dev/null
+++ b/tests/fixtures/audio/.gitkeep
@@ -0,0 +1 @@
+Phase 6 reorg moves audio fixtures here (valid/ formats/ edge/ hostile/). See ../README.md.
diff --git a/tests/fixtures/data/.gitkeep b/tests/fixtures/data/.gitkeep
new file mode 100644
index 00000000..4db1ef03
--- /dev/null
+++ b/tests/fixtures/data/.gitkeep
@@ -0,0 +1 @@
+Phase 6 reorg moves data fixtures here (valid/ formats/ edge/ hostile/). See ../README.md.
diff --git a/tests/fixtures/document/.gitkeep b/tests/fixtures/document/.gitkeep
new file mode 100644
index 00000000..9ca0dd23
--- /dev/null
+++ b/tests/fixtures/document/.gitkeep
@@ -0,0 +1 @@
+Phase 6 reorg moves document fixtures here (valid/ formats/ edge/ hostile/). See ../README.md.
diff --git a/tests/fixtures/image/.gitkeep b/tests/fixtures/image/.gitkeep
new file mode 100644
index 00000000..8a72c4f3
--- /dev/null
+++ b/tests/fixtures/image/.gitkeep
@@ -0,0 +1 @@
+Phase 6 reorg moves image fixtures here (valid/ formats/ edge/ hostile/). See ../README.md.
diff --git a/tests/fixtures/video/.gitkeep b/tests/fixtures/video/.gitkeep
new file mode 100644
index 00000000..26baa78a
--- /dev/null
+++ b/tests/fixtures/video/.gitkeep
@@ -0,0 +1 @@
+Phase 6 reorg moves video fixtures here (valid/ formats/ edge/ hostile/). See ../README.md.