Anthbot Map v2.4.7.5

• Adds an isolated M5 LiDAR live-map preference for Anthbot M5 LiDAR, MGS02Radar, and equivalent M LiDAR model identifiers.
• Uses the mobile-app-compatible current map path first: map_<serial>.txt with category=device and sub_category=map.
• Keeps the existing serial-named map_manager, selected multi_maps, and legacy rescue paths unchanged as fallbacks when the live map is unavailable.
• Does not alter normal M5, M9/M9 Pro, N8, Genie command, path, heading, frontend, or map-routing behavior.
• Preserves the last valid live LiDAR map across transient cloud/download failures instead of replacing it with an older archive.
• Adds regression coverage proving non-LiDAR models bypass the new wrapper, live-map success wins, live-map failure falls through to the existing stack, and transient failures retain a valid live map.
• Validation before release: 344/344 unit tests passed, including all four new M5 LiDAR regressions; Hassfest and HACS validation passed.
• M5 LiDAR hardware verification remains pending because the test mower is remote; diagnostics now expose m5_lidar_live_map_probe so the live source can be confirmed after installation.