diff --git a/.gitea/workflows/regenerate-readme-index.yml b/.gitea/workflows/regenerate-readme-index.yml
new file mode 100644
index 0000000..b2a1180
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+++ b/.gitea/workflows/regenerate-readme-index.yml
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+# Regenerates README.md's index section on every merge to main.
+# See §2 of SPEC.md. Implementation is a follow-up — this workflow
+# file is present as a marker so the meta repo's shape matches the
+# spec from day one.
+name: regenerate-readme-index
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  noop:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "Index regeneration is a follow-up (see SPEC §2)"