drjones 7e93324288 handshake-capture-c6: SPI bus lock, SD v1.0.2 diagnostics, MUST_DO review ...

- SPI_Bus_Lock: serialize LCD + SD on shared SPI; pause display during SD
- SD_Init after WiFi scan; SD_IsReady gating; serial [SD]/[CAP] diagnostics
- MUST_DO_IMPROVEMENTS.md full firmware review backlog; README link
- Bump HANDSHAKE_FIRMWARE_VERSION to 1.0.2 (header)

Made-with: Cursor

2026-03-21 17:59:45 -07:00

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