Skill Registry

Use whenever the user asks you to act as, consult, or reason like a specific job role/domain expert (e.g. "review this like a CFO," "what would a UX designer say," "act as a contracts lawyer") and this repo's roles/ directory is available. Finds the best-matching role SKILL.md and adopts it, or honestly reports the gap if none exists.

Use when a task needs the judgment of a Photographic Process Worker — calculating a time-temperature compensation when processing chemistry runs off standard temperature, verifying chemistry condition via a densitometer control strip rather than visual judgment, deciding whether fixer exhaustion requires extended fixing time, or preventing cross-contamination when switching processes on shared equipment.

Use when a task needs the judgment of a Photonics Engineer — sizing a Gaussian-beam coupling lens system between a laser source and a single-mode fiber, closing an optical fiber link power budget in dB with end-of-life margin, specifying a diffraction-limited focusing or imaging lens against the Rayleigh criterion, classifying a laser source's hazard class and computing MPE/NOHD per ANSI Z136.1, or diagnosing a beam-quality or link-loss failure.

Use when a task needs the judgment of a Photonics Technician — inspecting a fiber end-face against IEC 61300-3-35 pass/fail zone criteria, fusion- or mechanical-splicing fiber and verifying the loss against budget, reading an OTDR trace for a fault that may be hidden in a dead zone, running an L-I-V sweep and burn-in on a laser diode, or handling and hermeticity-testing an ESD-sensitive optoelectronic package under GR-468-CORE.

Use when a task needs the judgment of a physiatrist — screening whether a patient's diagnosis and functional trajectory support inpatient rehab (IRF) admission, projecting length of stay from a FIM trajectory, building a spasticity or neurogenic bladder management plan, working up a spinal-cord-injury complication like autonomic dysreflexia, or writing a prosthetic/orthotic prescription. A reasoning aid, not medical advice.

Use when a task needs the judgment of a physical therapist — screening a musculoskeletal complaint for red flags requiring physician referral, building a plan of care with measurable functional goals, tracking outcome-measure change to justify continued treatment or discharge, or interpreting a goniometry/strength deficit against normative values.

Use when a task needs the judgment of a physical therapist aide — prepping and reset of treatment rooms between patients, applying pre-set thermal modalities (hot pack, cold pack, paraffin) within safety parameters, assisting patient transport/transfers under supervision, or classifying whether a requested task falls inside or outside the aide's delegable scope. Narrower than physical-therapist-assistant (licensed, treats independently under general supervision) — this role is unlicensed and everything patient-facing requires the supervising PT/PTA physically present.

Use when a task needs the judgment of a physical therapist assistant — progressing an exercise within a supervising PT's set parameters, deciding whether a patient's session-to-session change stays inside the plan of care or needs PT reassessment, re-testing an outcome measure and reporting the result, or recognizing a status change (new pain pattern, fall, medication change) that isn't the PTA's call to manage alone.

Use when a task needs the judgment of a physician assistant — working up an undifferentiated complaint within a delegated scope of practice, deciding when a case needs escalation to the supervising/collaborating physician, applying a validated clinical decision rule to avoid unnecessary testing, or navigating a state-specific practice-agreement boundary (prescribing authority, cosignature requirements).

Use when a task needs the judgment and diagnostic reasoning process of a physician — working through a differential diagnosis, evaluating clinical evidence, or reasoning about diagnostic uncertainty. This is a reasoning-process reference, NOT a substitute for a licensed physician, and must never be used to give an actual person medical advice, a diagnosis, or a treatment recommendation.

Use when a task needs the judgment of a Physicist — designing an experiment to control systematic error, propagating measurement uncertainty through a derived quantity, evaluating whether a model fits data (chi-squared/goodness-of-fit), running a dimensional-analysis sanity check on a formula, or deciding whether an apparent signal is real or a statistical/systematic artifact.

Use when a task needs the judgment of a Pile Driver Operator — reading a blow count against a wave-equation bearing graph to decide accept/drive-deeper/stop-and-flag, diagnosing premature refusal as obstruction versus true bearing, sequencing a pile group to control heave and driving-induced ground movement, deciding restrike timing to capture soil setup or relaxation, or selecting a hammer/cushion combination for a driving-stress limit on steel, concrete, or timber piles.

Use when a task needs the judgment of a pipe trades helper — tending an open trench and its protective system while a pipelayer, plumber, or pipefitter sets grade, checking a grade-rod reading against a cut sheet before pipe goes in, prepping and threading/soldering pipe ends to a fitter's cut list, staging bedding and backfill material in compacted lifts, or writing an end-of-day grade and safety handoff.

Use when a task needs the judgment of a Pipelayer — setting or verifying gravity-sewer or water-main grade from stationed invert elevations, classifying trench soil and selecting a protective system under OSHA Subpart P, selecting bedding class and compaction targets by pipe material, checking water/sewer horizontal and vertical separation at a crossing, or diagnosing a slope, deflection, or compaction defect before backfill sign-off.

Use when a task needs the judgment of a Pit Boss (First-Line Supervisor of Gambling Services Workers) — authorizing a table fill or credit, deciding whether a payout dispute needs surveillance review, rating a player's theoretical value for comps, rotating and scheduling dealers on a live pit, or judging whether a hold-percentage swing on a table is variance or a real problem.

Use when a task needs the judgment of a Platform/Infrastructure Engineer — designing a golden path for a common developer workflow, setting a self-service abstraction's level with an explicit escape hatch, diagnosing why platform adoption is low, enforcing infrastructure-as-code against configuration drift, or planning a staged rollout given a shared platform's multi-tenant blast radius. Distinct from a DevOps/SRE role — this one builds the tools and abstractions other engineers use, not the operational reliability of production systems.

Use when a task needs the judgment of a Plating Machine Operator — calculating plating time from Faraday's law adjusted for actual cathode efficiency rather than a theoretical deposition rate, setting current density from part surface area rather than a fixed amperage, verifying thickness in recessed areas given a bath's throwing power, or confirming surface activation before plating rather than general cleaning alone.

Use when a task needs licensed plumber/pipefitter/steamfitter judgment — sizing DWV or water-supply pipe by fixture-unit tables, selecting a backflow-prevention device by cross-connection hazard class, diagnosing trap-seal loss or slow drains from vent-distance or slope violations, sizing water-hammer arrestors and thermal-expansion tanks, or pressure-testing new water, gas, or steam piping before cover.

Use when a task needs the judgment of a podiatrist — staging a diabetic foot ulcer and deciding whether debridement is safe, screening for loss of protective sensation and peripheral arterial disease before a treatment plan, choosing offloading vs surgical correction for a foot/ankle deformity, or interpreting a gait/biomechanical exam against a recurrent-ulceration or overuse-injury pattern.

Use when a task needs the judgment of a working poet or lyricist — drafting and revising a poem or song lyric for sound and compression, deciding where and how to submit work to literary magazines or collaborators, negotiating songwriting splits or publication rights, or reading workshop feedback for signal versus noise.

Use when a task needs the judgment of a Police Identification and Records Officer — running and disposing an AFIS latent-print candidate list, deciding whether a criminal-history or NCIC records disclosure is legally authorized for the requester, reconciling an NCIC want/warrant validation cycle before entries purge, or evaluating whether a fingerprint identification is documented well enough to survive cross-examination.

Use when a task needs the judgment of a Police and Sheriff's Patrol Officer — deciding whether force is objectively reasonable under Graham v. Connor, escalating a stop from reasonable suspicion to probable cause, positioning and approaching a domestic disturbance or traffic stop safely, writing an incident report that survives cross-examination, or prioritizing conflicting radio traffic on an active call.

Use when a task needs the judgment of a plasterer / stucco mason — laying out control joints on a large stucco elevation, scheduling cure time between scratch/brown/finish coats against a construction deadline, specifying weather-resistive-barrier and lath detailing behind stucco, setting a weep-screed/flashing detail at the base of a wall, or diagnosing a moisture-intrusion or cracking failure in traditional stucco or EIFS.

Use when a task needs the judgment of a police sergeant or first-line supervisor — reviewing a use-of-force report and deciding whether it clears or needs escalation, deciding when an early-intervention-system flag requires a formal intervention versus a documented conversation, structuring a Garrity-compliant administrative interview, building a shift roster against minimum staffing, or evaluating a field training officer's daily observation reports for a probationary officer.