Add 12-OBD-Speed: ELM327 speed over BLE on a GIF background

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- speed page: 120 px antialiased number (lv_font_conv) + 0-200 km/h arc
  gauge over ezgif-5-cb56986bc7.gif (embedded via board_build.embed_files)
- swipe-left menu: scan, OBD-like adapters first, tap to select; adapter
  remembered in NVS, auto-connect at boot and reconnect every 3 s
- ELM327 init ATZ/ATE0/ATL0/ATS0/ATH0/ATSP0/0100, then 010D polling
- shared ini: -DLV_LVGL_H_INCLUDE_SIMPLE for generated fonts

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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patriandClaude Opus 5.5 committed 2026-10-23 16:49:37 +02:00

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commit 66f70c0cc1

9 files changed

+4391

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