feat: organizer Android app and token-gated upload API

Replace Syncthing as the product upload path with a share-target app
and POST /api/jobs. Web UI live-polls job progress.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_main.py

@@ -93,7 +93,10 @@ def test_job_file_srcset_resize(client: TestClient, data_dir: Path) -> None:
     assert index.status_code == 200
     assert f"/jobs/{stem}/files/{png.name}?w=640" in index.text
     assert "srcset=" in index.text
-    assert "data-full-src=" in index.text
+
+    detail = client.get(f"/jobs/{stem}")
+    assert detail.status_code == 200
+    assert "data-full-src=" in detail.text
 
 
 def test_img_attrs_builds_srcset() -> None: