feat: integrate upload-platform v0.2.2 into drhider (v0.0.78)

- Update upload/ module to v0.2.2 with modular Layer 1 (FilePicker) and Layer 2 (Streaming transit upload)
- Replace legacy manual file table in site/templates/index.html with FilePicker.initFilePicker
- Wire uploadViaVM with per-file status updates and abort signal support
- Add dist bundles to dist/ and site/static/dist/ with routes in site/routes/main_bp.py
- Add test_hardening.py and test_safe_name.py from upload-platform
- Bump version to 0.0.78 in site/app.py
- Document integration plan and report in History/upload-integration/

tests/test_upload.py

@@ -75,7 +75,7 @@ def test_single_file():
     assert rv.status_code == 200
     resp = json.loads(rv.data)
     assert resp["ok"] is True
-    assert len(resp["session"]) == 12
+    assert len(resp["session"]) == 32
     assert resp["count"] == 1