Initial AMPB scaffold

tests/test_docsgen.py

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+from __future__ import annotations
+
+import tempfile
+import unittest
+from pathlib import Path
+
+from ampbrowser.docsgen import generate_docs
+
+
+class DocsGenTest(unittest.TestCase):
+    def test_generate_docs_writes_and_then_checks_clean(self) -> None:
+        with tempfile.TemporaryDirectory() as tmp:
+            root = Path(tmp)
+            changed = generate_docs(root)
+
+            self.assertEqual(
+                {Path("docs/generated/route-rules.md"), Path("docs/generated/transports.md")},
+                set(changed),
+            )
+            self.assertEqual([], generate_docs(root, check=True))
+
+
+if __name__ == "__main__":
+    unittest.main()