nx_moonraker_telemetry_parse.nx

nx_moonraker_telemetry_parse.nx -- pure-substrate parser for Moonraker /printer/objects/query responses; populates the thermal section of NxPrintTelemetry. Strategy: substring-window scan (no recursive descent). Moonraker JSON shape is documented and stable enough that this approach works without a full tree parser, but it IS brittle if Moonraker changes the response layout -- a future arc can swap this for an nx_json-based stateful parser without changing the API. For /printer/objects/query?extruder&heater_bed the response is: {"result":{"status":{ "extruder": {"temperature":209.8,"target":210.0,...}, "heater_bed": {"temperature":59.7, "target":60.0, ...} },"eventtime":12345.678}} We: 1. Find the scope window `"extruder":{...}` (matched braces). 2. Within that window, find `"temperature":` and read the next number. Likewise `"target":`. 3. Same for heater_bed. Numbers convert to whole °C (truncate fractional). 1°C precision is acceptable given typical 2-5°C tolerances; operator can tighten if needed. Sentinel -1 means "not found" for setpoints (lets NxPrintTelemetry skip that axis cleanly). license_tier: ORIGINAL