Put ESP Screens in English and keep layouts when entity IDs change (0.2.40)

Everything a user sees or reads is now English: both boards' labels,
status replies and logs, the ESP Screens editor and Alerts cheatsheet,
and the README and guides (docs/TILES.md, CALIBRATING.md, ACCEPTANCE.md
and TROUBLESHOOTING.md replace the Dutch file names). Labels follow
Home Assistant's own English names (Heat/Cool modes, Heating/Cooling
actions, Away, Returning to dock, weather conditions), dates use English
abbreviations and the top bar writes numbers the English way. Docs use
HA 2026.9's menu names (Settings -> Apps, App store, Settings -> Tools).
Unused legacy files (home-like.yaml, buttons.yaml, a.out) are removed.

Firmware 0.2.34 names its entities in English. Home Assistant registers
a renamed ESPHome entity under a new entity ID, so the inbox
text.<screen>_tegelinstellingen becomes text.<screen>_tile_settings and
the layout stored under the old ID would be lost. The manager now
recognises the screen by its device, during a run or after a restart,
and moves its layout and update history along; the Update button and
the nightly round follow the screen through the rename. Screens that
still run 0.2.33 or older keep working: both languages are matched.

Main is the only release branch from now on.

Tested on a Home Assistant Yellow (HA 2026.9.1) with both bench boards:
see docs/TEST_RESULTS_0240.md.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

diagnostics/test_runtime_transport.py

@@ -20,7 +20,8 @@ async def main():
     await client.connect(login=True)
     try:
         entities, _ = await client.list_entities_services()
-        inbox = next(e for e in entities if isinstance(e, TextInfo) and e.name == 'Tegelinstellingen')
+        # Firmware built before the English translation still names this entity in Dutch.
+        inbox = next(e for e in entities if isinstance(e, TextInfo) and e.name in ('Tile settings', 'Tegelinstellingen'))
         assert inbox.max_length == 255
         queue = asyncio.Queue()
         client.subscribe_states(lambda s: queue.put_nowait(s.state) if isinstance(s, TextState) and s.key == inbox.key else None)
@@ -35,13 +36,13 @@ async def main():
             client.text_command(inbox.key, secrets.token_hex(6) + '|0|1|' + encoded)
             while True:
                 ack = await asyncio.wait_for(queue.get(), 5)
-                if ack.startswith('Fout:'):
+                if ack.startswith(('Error:', 'Fout:')):
                     print('PASS: rejected invalid command — ' + ack)
                     break
         client.text_command(inbox.key, secrets.token_hex(6) + '|2|1|e30=')
         while True:
             ack = await asyncio.wait_for(queue.get(), 5)
-            if ack == 'Fout: onvolledig bericht':
+            if ack in ('Error: incomplete message', 'Fout: onvolledig bericht'):
                 print('PASS: missing chunks rejected')
                 break
     finally: