Claude Skills by Nmor

SonarLint / SonarQube / SonarJS rule catalogue (full 269-rule reference) plus per-language equivalents (golangci-lint, ruff, rubocop, errorlint, NullAway, clippy). Use when touching any code file to sweep against the highest-signal Sonar rules (S100, S107, S125, S138, S1192, S1481, S1854, S2068, S3358, S3776, S5547, S6571, S6606, S6594, S6644, S6759, S7755, S7773, S7780, S7781), apply per-file overrides for legitimate exceptions (test files, SSRF validators, domain nouns), and configure eslin...

Spring Boot 3.x implementation discipline — layering (controller/service/repository), dependency injection, configuration properties, transaction boundaries, JPA usage, REST API design, error handling, AND the full Spring Security surface (authentication, authorization, method security, CSRF, CORS, headers, secret handling). Use when writing or reviewing any Spring Boot controller, service, repository, entity, configuration class, application.yml or build file.

Spring Boot testing discipline — TDD workflow with JUnit 5, @SpringBootTest slicing (@WebMvcTest, @DataJpaTest), MockMvc, Testcontainers, and the verification gates a Spring Boot change must pass before it ships (build, coverage floor, static analysis, integration checks). Use when writing Spring Boot tests or verifying a Spring Boot change is done.

SQL discipline — lowercase keywords (modern convention; consistent project-wide), explicit column names (no SELECT * in production), UTC timestamps (TIMESTAMPTZ in Postgres), singular vs plural table names consistent, explicit JOIN (no implicit comma-joins), CTEs over deeply nested subqueries, named indexes, NULL-aware semantics (NULL = NULL is UNKNOWN; use IS NULL), parameterised queries always (no string interpolation), DELETE/UPDATE always with WHERE, migrations idempotent + reversible (ex...

Principal-level trade execution and broker workflow — order types, routing, transaction cost analysis (TCA), best execution duties, regulatory compliance (Reg NMS / MiFID II), suitability, and the operational discipline that turns a portfolio decision into actual settled positions.

Structural engineering literacy — loads (dead / live / wind / seismic / snow), materials (steel / concrete / timber / masonry), structural systems (frame / shear-wall / braced / shell / cable), and code regimes (Eurocode, AISC, ACI, IBC, NBCC). Activates on AEC + civil work to identify what's negotiable, what isn't, and where a licensed Structural Engineer of Record (SEOR) must own the call.

End-to-end orchestration of materials, information, and money across suppliers, manufacturers, distributors, and customers — SCOR model (Plan / Source / Make / Deliver / Return / Enable), demand sensing, S&OP, inventory positioning (safety stock, MOQ, EOQ), supplier risk management, resilience design (dual-sourcing, near-shoring, buffers), Incoterms 2020, customs + trade compliance. Sister to lean-manufacturing (in-house flow).

Thread-safe data persistence in Swift using actors — in-memory cache with file-backed storage, eliminating data races by design.

Protocol-based dependency injection for testable Swift code — mock file system, network, and external APIs using focused protocols and Swift Testing.

Use this skill when writing new features, fixing bugs, or refactoring code. Enforces test-driven development with 70%+ coverage including unit, integration, and E2E tests.

Theory of Inventive Problem Solving (Altshuller, 1946) — resolve technical contradictions via the 40 inventive principles + contradiction matrix, identify Ideal Final Result, evolve toward Ideality, escape local optima that brainstorming cannot reach. Derived from analysis of 200,000+ patents.

TypeScript-specific idioms, type-system patterns, narrowing techniques, generics, branded types, and strictness flags. Auto-fires for `.ts` and `.tsx` files alongside `coding-quality-rules` to add TS-specific guidance the universal skill doesn't cover.

Principal-level user research methodology — generative vs evaluative methods, study design, recruitment, sample sizing, qualitative coding, statistical rigour for usability tests, persona + JTBD synthesis, ethical research practice, and the discipline that turns user observations into decisions product teams actually use.

Principal-level valuation methodologies — DCF, trading comparables, precedent transactions, LBO, sum-of-the-parts, venture capital method, real options. Cite valuation outputs as ranges with explicit assumption sensitivity, never a single point estimate.

A comprehensive verification system for Claude Code sessions.

Vue 3 idioms — Composition API, `<script setup>`, composables, Pinia stores, reactivity gotchas, performance, and Volar / vue-tsc strictness. Auto-fires for `*.vue` and Vue-specific TypeScript files alongside `frontend-patterns` to add Vue depth the generic skill doesn't cover.

WCAG 2.2 AA + AAA accessibility patterns for every user-facing surface — semantic HTML, ARIA 1.2, keyboard navigation, screen reader support, color contrast, motion preferences, and the 9 new SCs introduced in WCAG 2.2. Also lazy-loads a11y.md content migrated from rules/common/ on 2026-06-02.

VAPID-signed Web Push (RFC 8030, 8291, 8292) — subscribe lifecycle, endpoint hashing, payload size cap, pushsubscriptionchange routing, and how to wire alarms / notifications across browser + service worker.

YAML 1.2.2 discipline — 2-space indent (never tabs), quote every coerce-prone scalar (version strings, country codes, booleans-as-strings), block style by default (flow only for short collections), document start --- when multi-document, schema reference via # yaml-language-server: $schema=...; ecosystem-aware key casing (camelCase for K8s, snake_case for Compose/GitHub Actions, kebab-case for action inputs); the Norway problem (NO parsing as boolean) requires explicit quoting; yamllint at st...