docs: refresh stato + roadmap with smoke-test findings; fix sort syntax

STATO_PROGETTO.md
- Bumped snapshot date to 2026-04-27.
- Added "Hardening post-restructure (smoke test 2026-04-26)" section
  recording the four runtime regressions surfaced by the local smoke
  test (env_file path, missing Station import, UPLOAD_DIR default,
  apostrophe-in-translation in Alpine), plus the recipe-assignment
  modal UX rework and the new node-based JS syntax test guard.
- Added "Smoke test status" section listing the verified end-to-end
  flow (MySQL up, alembic, seed, login, admin pages, MeasurementTec
  workflow, hot reload).
- Bumped frontend test count 44 → 46 to reflect
  test_template_js_syntax.py.

ROADMAP.md
- Added a tech-debt entry for the user-reported task_complete
  riepilogo rendering anomaly (still under investigation: the curl
  fetch returns the table populated, but the user reports an empty
  body in the browser).
- Added a tech-debt entry for the still-pending Docker container
  smoke test of the new uv-based Dockerfiles.

src/frontend/flask_app/templates/measure/task_complete.html
- Replaced sort(attribute='task_info.order_index,subtask.marker_number')
  with two chained stable sorts. Jinja's sort filter does not accept a
  comma-separated multi-attribute string; the previous form sorted on
  a non-existent attribute and only worked by accident because the
  API already returned rows in the desired order.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/frontend/flask_app/templates/measure/task_complete.html

@@ -175,7 +175,9 @@
                     </tr>
                 </thead>
                 <tbody>
-                    {% for m in measurements|sort(attribute='task_info.order_index,subtask.marker_number') %}
+                    {# Jinja's sort takes a single attribute. Chain stable sorts
+                       to get task.order_index → subtask.marker_number ordering. #}
+                    {% for m in measurements|sort(attribute='subtask.marker_number')|sort(attribute='task_info.order_index') %}
                     <tr>
                         <td class="text-center font-mono text-xs" style="color: var(--text-secondary);">
                             {{ m.measured_at[:16]|replace('T', ' ') if m.measured_at else '-' }}