rambling transcript not sanitised

A technician has said they cannot complete this step. Turn what they said into a structured reason and recommend the next action for the person standing there right now, knowing the procedure, the machine and its history.

Return JSON with these fields:
- reason_summary (string, required): Their reason in one clause, in their terms. Do not sanitise it.
- blocker_kind (one of part_missing | tool_missing | access | seized_or_damaged | unsafe | machine_absent | procedure_wrong | other, required)
- recommended_action (string, required): What to do next. Concrete and doable now, or explicitly 'stop and hand off'.
- proposed_status (one of deferred | waived | impossible, required): A proposal only. The Foreman disposes and a waiver needs a named person with standing. There is no skip.
- blocking_part (string, null when it does not apply): Part number or description when blocker_kind is part_missing.
- safety_flag (boolean, required): True if continuing would put someone at risk. Overrides everything else.

## The procedure
{
  "title": "Front brake service \u2014 Segway Xyber",
  "version": 3,
  "strictness": 2
}

## The step they are stuck on
{
  "title": "Fit the new pads and torque the caliper bolts",
  "why it exists": "An under-torqued caliper bolt backs out under braking heat and the caliper moves. This is the step that kills someone if it is skipped.",
  "what it asks for": [
    "Torque both caliper bolts to spec and record the reading"
  ],
  "position": "step 4 of 9"
}

## The machine
{
  "asset id": "XYBER-07",
  "model": "Segway Xyber",
  "hours or km": "31,402 km",
  "history": [
    "2026-05-02 front pads replaced at 24,880 km",
    "2026-06-19 fork seal weep noted, not actioned",
    "2026-07-30 tyre replaced front"
  ]
}

## What is on the shelf right now
{
  "EBC FA388HH front pads": 0,
  "caliper bolts M8x30": 6,
  "brake fluid DOT4": "2 x 500ml"
}

## Steps after this one
[
  "Bleed the front circuit",
  "Road test",
  "Sign off"
]

## What the technician said
{
  "spoken or typed": "voice",
  "verbatim": "Right, no. I've been at this bloody thing for forty minutes now. The pin's welded itself in there, the heat gun's done nothing, I've soaked it twice, and I'm not putting any more force through it because the last one I did that to snapped and then it was a two day job. So that's me done with it."
}