[iMicknl]

Since #208, the desk command sensor reads byte 5 as a second key byte for both 6-byte and 5-byte frames. On 5-byte keypads such as the HS01B-1 (#146) byte 5 is the checksum, so a release frame 9B 05 02 00 A1 60 9D decodes as ~16.33 instead of 8. In pass-through, Up/Down are then never released and keep moving until the min/max height.

• Only decode byte 5 as a key byte for 6-byte frames.
• Map value 9 (M4, added in fix(desk_command): publish M4 / preset-4 button (bit lives in byte 5) #208) to the Sit preset in office-desk-esp32-passthrough.yaml.

Replaying frames through the decoder loop:

Frames	Before	After
5-byte up, release, down, release	1, 16.33, 2, 16.33	1, 8, 2, 8
6-byte up, release, M4, release	1, 8, 9, 8	1, 8, 9, 8

esphome config passes for both pass-through tests and the pass-through package; esphome compile tests/office-desk-esp32-passthrough.yaml succeeds.

Refs #146, #131, #152

🤖 Generated with Claude Code

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