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    Z-A coupling: drop active jog/MDI auto-coordination, keep refuse-only check

    muehe released this 2026-05-03 15:03:01 +02:00 | -49 commits to master since this release

    The active rewriter for jogs/MDI didn't help anyway because the
    continuous-jog buttons send rate-based /api/jog commands to the AVR
    and bypass the planner+MDI path entirely. Rather than build out
    continuous-jog coupling on the ESP firmware or fake it with browser
    ticks, simplify back to:

    • Runtime check (Planner.__encode + ExternalAxis motion entry
      points) refuses any move that would worsen the Z-A gap. Already
      improvement-aware so X/Y jogs and Z-up/A-down recoveries pass.
    • File preprocessor (AuxPreprocessor) injects pre-position A
      moves into uploaded gcode so well-formed programs run without
      operator intervention.

    Operator workflow: jog freely down to the safe band; if you need to
    go deeper, lower A first (aux jog mm) or use a step-jog MDI like
    'G91 G0 Z-10 A-10' that includes the A delta. Programs do the right
    thing on their own.

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