v0.34.1-beta.7

custom_components/hass_dyson/image.py

• Dust map (v2 path): Replaced the dead S3 binary detective path
  (_fetch_v2_dust_map_bytes + zlib magic-byte sniffing) with a call to
  client.get_map_image(serial, clean_id) from libdyson-rest v0.15.0b5.
  The RB05 dust map now renders via the Dyson Map Visualizer API.
• Floor plan (v2 path): When presentation_map_data is empty (as it
  always is for the RB05 from the v1 persistent-maps endpoint), the code now
  falls back to _fetch_map_image(coordinator, pmap_id) — the Map Visualizer
  renders the floor plan server-side. Previously this path returned None.
• Added _fetch_map_image(coordinator, map_id) helper with a 10-minute TTL
  cache. Accepts either a clean session UUID (dust map) or a persistent map ID
  (floor plan).
• Removed the now-dead _fetch_v2_dust_map_bytes helper.
• Removed the unused async_get_clientsession import.
• Updated module docstring to describe the v1/v2 rendering strategy.