Publish snippets and Markdown posts through authenticated uploads

scripts/photo-manifest.py

@@ -7,4 +7,8 @@ import re
 photos = sorted(set(re.findall(r'id="photo-([a-f0-9]{64})"', Path('_site/art/index.html').read_text())))
 Path('_site/photo-publication.json').write_text(json.dumps({
     'commit': os.environ['GITHUB_SHA'], 'photos': photos,
+    'snippets': sorted(set(re.findall(r'id="snippet-([a-f0-9]{64})"',
+                                    Path('_site/snippets/index.html').read_text()))),
+    'posts': sorted(set(revision for page in Path('_site').rglob('*.html')
+                        for revision in re.findall(r'<meta name="upload-revision" content="([a-f0-9]{64})">', page.read_text()))),
 }) + '\n')

scripts/tests/test_deployment.py

@@ -15,12 +15,14 @@ class DeploymentTests(unittest.TestCase):
         with tempfile.TemporaryDirectory() as folder:
             root = Path(folder)
             (root / '_site/art').mkdir(parents=True)
+            (root / '_site/snippets').mkdir(parents=True)
             job = 'a' * 64
             (root / '_site/art/index.html').write_text(f'<div id="photo-{job}"></div>')
+            (root / '_site/snippets/index.html').write_text(f'<div id="snippet-{job}"></div>')
             subprocess.run(['python3', str(ROOT / 'scripts/photo-manifest.py')], cwd=root,
                            env=dict(os.environ, GITHUB_SHA='b' * 40), check=True)
             self.assertEqual(json.loads((root / '_site/photo-publication.json').read_text()),
-                             {'commit': 'b' * 40, 'photos': [job]})
+                             {'commit': 'b' * 40, 'photos': [job], 'snippets': [job], 'posts': []})
 
     @unittest.skipUnless(platform.system() == 'Linux', 'Production activation uses GNU mv and flock')
     def test_activation_failure_and_stale_workflow(self):