Library / First Principles Framework (FPF) - Core Conceptual Specification
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C.26.3:4.7 - Sensor, probe, candidate-intervention, and metric split

Do not let one dashboard value stand for the whole envelope.

ItemViability-facing question
Envelope variableWhich quality, resource, promise, risk, or operating dimension is inside/outside viable range?
SensorWhich metric, alert, trace, health check, survey, review, or observation reports part of the envelope?
ProbeWhich measurement setup, dashboard, readiness check, review, experiment, or incident query may change behavior or expose hidden dimensions?
Candidate interventionWhat change is proposed? Recover whether cache, throttle, routing, staffing, protocol, escalation, access, bridge, or context-split wording denotes a Method or description, setting proposal, plan, access or permission claim, or Bridge proposal or description. Separately identify any dated Work, actual transformation or other change, obtaining relation occurrence, or resulting state claimed to exist.
Boundary conditionWhich access, ownership, context, interface, promise, environment, or information constraint shapes the envelope?
Adaptation costWhich latency, risk, support load, or compliance exposure is incurred, and which effort, attention, energy, trust, or future flexibility is spent, reduced, or put at risk?

A metric value or dashboard carrier is neither Work nor an actual change. Its use, publication, or a surrounding governance routine may participate in a separately grounded behavior-changing claim. When Work is asserted, recover each actual performer’s A.13 core and independently admit the dated occurrence under A.15.1. If the claim must also identify the assignment under which the Work was performed, name that assignment and check the relation separately through F.6. Name any changed setting, actual transformation, access or permission relation, or boundary relation separately. Repairing one envelope variable may still damage another.