Show live values on the mockup, blink a screen to identify it, try an alert, copy and share layouts (0.2.74)

The tiles draw what Home Assistant reports (a new /api/states answers for the tiles on the page); the ···
menu gets Identify (the screen's own show_alert with flash), Copy layout from another screen, Export and
Import as JSON; the Alerts page opens with Try it (/api/alerts/test, one screen or all); the library filters
by room and hides what is placed, with lit icons for what is on; ⌘K searches screens, entities and actions;
the Update badge lists what's new from the changelog (copied into the image) and a running update shows a
progress bar with the ESPHome stage and the last log line.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

screen_manager/Dockerfile

@@ -5,6 +5,8 @@ ARG BUILD_ARCH
 LABEL io.hass.version="${BUILD_VERSION}" io.hass.type="app" io.hass.arch="${BUILD_ARCH}"
 RUN pip install --no-cache-dir 'aiohttp>=3.12,<4' PyYAML
 COPY app /app
+# The Update badge shows what's new from the changelog (app 0.2.74).
+COPY CHANGELOG.md /app/CHANGELOG.md
 WORKDIR /app
 ENTRYPOINT []
 CMD ["python3", "/app/server.py"]