Claude Skills by claude-dev-suite

Unity 2D Animation — sprite sheet frame-by-frame, skeletal 2D animation (bones + skinning + IK), PSD Importer, Aseprite Importer, Sprite Library / Resolver for character variants. USE WHEN: animating characters/enemies, swapping outfits, IK for arms/legs, importing layered art (PSB/PSD/Aseprite), 2D rigging. DO NOT USE FOR: tilemap animation (use `unity-2d-tilemap` Animated Tile); 3D character animation (use `unity-physics-anim`); UI animations (use `unity-input-ui`).

Unity 2D cameras — Cinemachine 2D (CinemachineCamera, Confiner 2D, Framing Transposer, Group Composer), Pixel Perfect Camera, parallax via cameras vs sprites, screen shake, target groups, virtual camera priorities. USE WHEN: setting up smooth 2D camera follow, framing rules, level-bound confiners, dynamic groups (multiple players), screen shake, pixel-perfect rendering of camera motion. DO NOT USE FOR: 3D Cinemachine (covered separately under unity-rendering / unity-physics-anim); UI camera...

Unity 2D fundamentals — Sprite Renderer, Sprite Atlas v2 (master/variants), 9-slice rendering, Sorting Layers vs Order in Layer vs Sorting Group, sprite import settings, Pixels Per Unit (PPU), Pixel Perfect Camera, point filtering. USE WHEN: importing sprites, packing atlases, controlling draw order in 2D, setting up pixel-art rendering, configuring 9-slice UI/decorations. DO NOT USE FOR: Tilemap (use `unity-2d-tilemap`); 2D physics (use `unity-2d-physics`); animation (use `unity-2d-animati...

Unity 2D gameplay patterns — character controllers (kinematic vs dynamic), coyote time, jump buffer, variable jump height, ledge grab, dash, wall slide, hitstop, juice patterns, top-down 8-way movement. USE WHEN: implementing platformer / metroidvania / top-down character controllers, "feel" tuning, ability layers (dash/double jump/wall slide). DO NOT USE FOR: 2D physics fundamentals (use `unity-2d-physics`); animations (use `unity-2d-animation`); cameras (use `unity-2d-cameras`).

Unity 2D lighting — URP 2D Renderer, Light 2D types (Point/Freeform/Sprite/ Parametric/Global), Shadow Casters 2D, Sprite Mask, Renderer2DData, normal mapped sprites, blend styles. USE WHEN: setting up the URP 2D Renderer, lighting a 2D scene, adding 2D shadows, using Sprite Mask for stencil-like effects, normal-mapped sprites. DO NOT USE FOR: 3D lighting (use `unity-rendering`); UI lighting concepts (UI doesn't normally use Light 2D); 2D animation (use `unity-2d-animation`).

Unity 2D physics — Rigidbody2D body types, Collider2D shapes, joints, effectors, layer collision matrix, contact filters, IEEE physics gotchas in 2D, raycast/overlap APIs. USE WHEN: tuning Rigidbody2D movement, joint setups (hinge/spring/distance/ slider), one-way platforms, conveyor belts, area effects, layered collisions, raycast queries. DO NOT USE FOR: 3D physics (use `unity-physics-anim`); platformer character movement (use `unity-2d-gameplay`); tilemap collision (use `unity-2d-tilemap`).

Unity 2D Tilemap — Grid + Tilemap, Rule Tiles, Animated Tiles, Tile Palette, Hexagonal/Isometric grids, Composite Collider 2D + Tilemap Collider 2D, procedural tilemap generation. USE WHEN: building level geometry from tiles, painting auto-tiling terrain, isometric/hex maps, optimising tilemap colliders, runtime tilemap generation. DO NOT USE FOR: free-form sprites (use `unity-2d-core`); platforming movement (use `unity-2d-gameplay`); 2D physics general topics (use `unity-2d-physics`).

Unity Addressables — AssetReference, async loading, labels, groups, build profiles, remote content, Cloud Content Delivery integration, content catalogs and updates. USE WHEN: replacing `Resources.Load`, async asset loading, scene streaming, remote content, DLC delivery, runtime asset hot-swap, splitting builds for size. DO NOT USE FOR: editor-time asset queries (use AssetDatabase); legacy Asset Bundles workflows (Addressables wraps them).

Unity project conventions — folder layout, asmdef structure, naming, source control (.gitignore + LFS + force text serialization), prefab variants, ScriptableObject-based architecture. USE WHEN: starting a new Unity project, refactoring an unhealthy one, setting up source control, organising assets, deciding on naming. DO NOT USE FOR: specific systems (use feature-specific skills).

Unity builds — IL2CPP vs Mono, build profiles, addressables-aware builds, Android (Gradle, AAB, Play Asset Delivery), iOS (Xcode post-processing, capabilities), WebGL, console NDA paths (high-level only). USE WHEN: configuring build settings, fixing platform-specific issues, signing, store submission, build size optimization, multi-platform CI. DO NOT USE FOR: editor-side build code (use `unity-editor-tooling`); runtime perf (use `unity-performance`).

Unity core scripting fundamentals — MonoBehaviour lifecycle, GameObject / Component model, ScriptableObjects, prefabs, serialization, coroutines, events, and execution order. USE WHEN: writing or refactoring core Unity scripts, designing data flow, setting up ScriptableObjects, dealing with serialization issues, choosing between Update / FixedUpdate / LateUpdate, coroutine vs async patterns. DO NOT USE FOR: rendering / shaders (use `unity-rendering`); 2D-specific topics (use `unity-2d-*`); ...

Unity DOTS — Entities 1.x, Burst-compiled jobs, IJobChunk / IJobEntity, NativeArray / NativeList, SystemBase vs ISystem, baking GameObject to entity, hybrid components. USE WHEN: massive entity counts (RTS, swarms, particles-as-entities), data-oriented refactor of hot simulations, deterministic netcode targets, Burst-friendly math. DO NOT USE FOR: regular GameObject gameplay (use `unity-core`); rendering (DOTS uses Entities Graphics — link from `unity-rendering`); networking with NGO (use `...

Unity Editor scripting — custom Inspectors, PropertyDrawers, EditorWindow, MenuItems, asset post-processors, Editor Coroutines, automated builds via `-batchmode -executeMethod`. USE WHEN: building tools for designers, custom Inspector UI, gizmos, scene validators, asset import hooks, editor menu commands, headless CI builds. DO NOT USE FOR: runtime UI (use `unity-input-ui`); test runner (use `unity-testing`).

Unity new Input System and UI — InputAction, InputActionAsset, PlayerInput, rebinding, multi-device, plus UI Toolkit (UXML/USS, runtime + editor) and uGUI Canvas optimization. USE WHEN: wiring input bindings, supporting gamepads/keyboard/touch, building menus/HUD with UI Toolkit or uGUI, optimizing Canvas batches, runtime rebinding, on-screen control overlays. DO NOT USE FOR: legacy `Input.GetKey` API (deprecated — migrate to new Input System); 3D world-space UI specifics (use `unity-render...

Unity Netcode for GameObjects (NGO) — NetworkBehaviour, NetworkVariable, RPCs (Server/Client/Owner), client-side prediction, lag compensation, Multiplay/Relay/Lobby integration. USE WHEN: building multiplayer (co-op, competitive, MMO-lite), network authority decisions, anti-cheat, matchmaking + relay. DO NOT USE FOR: P2P state-sync without NGO (Mirror, Photon — out of scope); ECS-native networking (NetCode for Entities — adjacent stack).

Unity performance — Profiler, Frame Debugger, Memory Profiler, GC allocation hunting, object pooling, IL2CPP build settings, Burst, batching, LOD, GPU Resident Drawer. USE WHEN: frame drops, GC spikes, long load times, memory growth, draw-call storms, mobile thermal/battery issues, profiling captures. DO NOT USE FOR: gameplay logic refactoring (use `unity-core`); pipeline selection (use `unity-rendering`).

Unity 3D physics (Rigidbody, Collider, Joints) and animation (Animator state machines, parameters, layers, Animation Rigging, Humanoid retargeting, blend trees). USE WHEN: tuning rigidbody movement, designing Animator state machines, blending animations, layer collision matrix, joints/constraints, motion warping, IK setups. DO NOT USE FOR: 2D physics or 2D animation (use `unity-2d-physics` / `unity-2d-animation`); ECS physics (use `unity-dots`).

Unity rendering pipelines (Built-in / URP / HDRP), Shader Graph, Renderer Features, Volume framework, post-processing, materials, lighting, and GPU Resident Drawer. USE WHEN: choosing or migrating rendering pipeline, writing/editing shaders (Shader Graph, HLSL, ShaderLab), tuning lighting, debugging draw calls, configuring Volume profiles, custom render passes. DO NOT USE FOR: 2D Renderer specifics (use `unity-2d-lighting`); UI Toolkit rendering (use `unity-input-ui`); profiling-only questi...

Unity Test Framework — EditMode + PlayMode tests, [UnityTest] coroutines, Test Runner, mocking patterns, Unity.PerformanceTesting package. USE WHEN: writing/debugging tests, setting up CI test runs, performance regression tests, asserting scene state, mocking time/input. DO NOT USE FOR: runtime in-game telemetry (use `unity-performance` for profiling); end-to-end automation (use editor tooling + custom harness).

Unity XR — XR Interaction Toolkit 3.x (Interactor/Interactable/Manipulation), AR Foundation (planes, anchors, image tracking, body tracking), OpenXR, hand tracking on Quest/Vision OS. USE WHEN: VR/AR/MR projects, integrating XR controllers, AR plane detection, XR locomotion, hand tracking, eye tracking, OpenXR features. DO NOT USE FOR: regular 3D gameplay (use `unity-physics-anim`); rendering pipeline (use `unity-rendering` — XR has URP-specific considerations).

Browser graphics via Canvas 2D API, WebGL, and creative coding libraries.

Animating SVG with CSS, Framer Motion, GSAP, and native SVG attributes.

3D graphics in the browser. Three.js = core library. React Three Fiber (R3F) = React renderer for Three.js.

Bulk engineering approaches, tools, and implementation strategies for mass-generating PLC/DCS control logic, HMI displays, and I/O configurations from engineering databases. Use when planning or implementing automation of DCS engineering workflows.

Reference for major DCS/PLC platforms - ABB Freelance, Siemens PCS7/TIA Portal, Emerson DeltaV, Honeywell Experion. Use when comparing platforms, mapping function blocks across vendors, or designing cross-platform solutions.

Complete ABB Freelance DCS file format reference for DMF, PRT, and CSV project files. Use when analyzing, parsing, or generating Freelance engineering files.

IEC 61131-3 programming languages reference (LD, FBD, ST, IL, SFC), PLCopen standards, program organization units, data types. Use when discussing PLC programming standards or cross-platform compatibility.

ISA-5.1 tag naming, ISA-88 batch control, ISA-95 enterprise integration, ISA-18.2 alarm management, and ISA-101 HMI standards reference. Use when working with instrument tags, naming conventions, or plant hierarchy.

Membrane autopsy lab methodology — autopsy decision matrix (when to autopsy), element sampling protocol (which to pick, preservation, data package), lab method suite (visual / weight-loss / dye test per ASTM D6908 / SEM-EDS / FTIR / swab + plate count / Fujiwara chlorine test / cross-section), findings-to-action interpretation table, independent and vendor-affiliated labs with cost ranges, warranty claim workflow (open BEFORE pulling the element), bilingual glossary. Use when planning or inte...

RO/EDI economics (SEC, LCOW, lifecycle decision matrix), Electrodeionization deep-dive (cell pair geometry, FCE feed metric, KPIs, 8 failure modes), EDI vs Mixed-Bed DI sizing economics, pharmaceutical UPW/WFI regulatory context (USP/Ph. Eur./21 CFR Part 11/EU Annex 11), produced-water regulatory context (WHO/ISO 16075/EN 12952-12/SEMI F63). Use for energy benchmarks, cost modelling, EDI design/diagnostics, and regulatory citation.

Nanofiltration (NF) reference — separation mechanisms (Donnan + steric + dielectric exclusion via DSPM-DE), pH-dependent membrane charge and isoelectric point, KPIs and selectivity ratio, vendor matrix (DuPont FilmTec NF270/NF90/NF200/NF245, Suez DK/DL/HL, Toray SUL, LANXESS Lewabrane NF, Pentair X-Flow tubular, Synder NFX/NFS), applications (softening, NOM/color removal, offshore sulfate removal, mining brines, dairy, OSN), operating windows, fouling differences vs RO. Use when designing NF ...

RO/NF pretreatment chain — feed type architectures (SWRO open/beach well, BWRO well/surface, tertiary reuse), pretreatment KPI targets (SDI, turbidity, AOC, Fe/Mn, free Cl2), coagulation chemistry (FeCl3/PAC/alum dose math), antiscalant selection by scaling species, dechlorination (SBS stoichiometry + chloramine handling), CO2/pH management for 2-pass RO and EDI feed, biocide strategy (oxidizing pre-membrane vs non-oxidizing on-membrane), monitoring instrumentation. Use when designing or audi...

Reverse Osmosis (RO) and Electrodeionization (EDI) process fundamentals — formulas (recovery, rejection, NDP, osmotic pressure, TCF, NPF/NSP), authoritative standards reference (ASTM/ISO/USP/Ph.Eur./WHO/EN), vendor design windows (DuPont, Hydranautics, Toray, Suez, LANXESS), water chemistry, EDI quick reference, IT/EN glossary. Use when working on RO/EDI plant code, KPI calculations, or normative citations.

RO/NF membrane diagnostic methodology — fouling taxonomy (colloidal, biofouling, organic, particulate), scaling by mineral species (CaCO3/CaSO4/BaSO4/SrSO4/SiO2/CaF2/Fe-Mn), integrity loss (O-ring, breach, chlorine oxidation, telescoping), chemical/operational failures, CIP decision matrix, ASTM D4516 trend-based diagnostics, baseline establishment, and decision-tree pseudo-code. Use when analyzing RO/NF plant data to identify root cause of performance deviation.

API gateway patterns and implementations. Kong, AWS API Gateway, NGINX as gateway, rate limiting, request routing, authentication offloading, and request/response transformation. USE WHEN: user mentions "API gateway", "Kong", "AWS API Gateway", "NGINX gateway", "gateway pattern", "request routing", "BFF" DO NOT USE FOR: reverse proxy basics - use infrastructure skills; service mesh - use `service-mesh`; rate limiting in app - use `rate-limiting`

Production backup strategy and disaster recovery planning for Linux servers, covering database backups, file backups, encryption, cloud storage, retention policies, and restore runbooks. USE WHEN: - Designing or implementing a backup strategy for a production server - Writing pg_dump / mongodump / mysqldump backup scripts - Configuring rclone to sync backups to S3, Backblaze B2, or SFTP - Encrypting backup archives with GPG before uploading offsite - Setting up retention schedules (daily/wee...

Caddy v2 reverse proxy with automatic HTTPS. Covers Caddyfile syntax, directives, TLS configuration, DNS challenges, and API-based management. USE WHEN: user mentions "caddy", "caddyfile", "caddy server", "xcaddy", "caddy reverse proxy", asks about "automatic https", "let's encrypt caddy", "caddy tls", "caddy load balancing", "caddy websocket proxy", "caddy dns challenge", "caddy cloudflare", "caddy api", "caddy systemd" DO NOT USE FOR: Nginx-based setups - use `load-balancer` or a dedicate...

Cron and scheduled task management. node-cron, cron expressions, Spring @Scheduled, APScheduler (Python), and distributed scheduling patterns. USE WHEN: user mentions "cron", "scheduled task", "cron job", "node-cron", "@Scheduled", "APScheduler", "periodic task", "crontab" DO NOT USE FOR: job queues with workers - use `job-queues`; one-off delayed tasks - use `job-queues`

Production deployment strategies. Blue-green, canary, rolling update, recreate. Zero-downtime deployments, rollback procedures, database migration coordination, and deployment automation. USE WHEN: user mentions "blue-green", "canary deployment", "rolling update", "zero-downtime", "deployment strategy", "rollback", "deploy pipeline" DO NOT USE FOR: CI/CD pipeline syntax - use `github-actions`; container orchestration - use `kubernetes`; IaC - use `terraform`

DNS concepts, record types, and management skill: Cloudflare, Route 53, DNSSEC, debugging with dig/nslookup, TTL strategy, and split-horizon DNS. USE WHEN: - Adding or modifying DNS records for a web application, mail system, or API - Configuring Cloudflare proxy (orange cloud) or DNS-only mode - Setting up Route 53 hosted zones, health checks, and routing policies - Debugging DNS propagation, CNAME loops, MX failures, or SPF/DKIM issues - Planning a migration with minimal downtime (TTL stra...

Docker Compose for multi-container apps. Covers services, networks, and volumes. Use for local development environments. USE WHEN: user mentions "docker-compose", "docker-compose.yml", "multi-container", "service dependencies", "docker compose up", asks about "local dev environment", "microservices setup", "database + app setup", "docker networks", "docker volumes" DO NOT USE FOR: single container Dockerfiles - use `docker` skill instead, production orchestration - use `kubernetes` skill in...

Docker containerization. Covers Dockerfile, images, and best practices. Use for containerizing applications. USE WHEN: user mentions "dockerfile", "docker build", "docker run", "containerize", "docker image", "multi-stage build", asks about "how to dockerize", "container security", "docker optimization", "image size", "docker layers" DO NOT USE FOR: docker-compose multi-service setups - use `docker-compose` skill instead, Kubernetes orchestration - use `kubernetes` skill instead

Email deliverability and DNS-based email authentication covering SPF, DKIM, DMARC, MX, PTR, and BIMI records, SMTP relay service configuration (SendGrid, SES, Postmark, Mailgun), self-hosted Postfix relay basics, and deliverability testing. USE WHEN: - Setting up or auditing email DNS records (SPF, DKIM, DMARC, MX, PTR) - Configuring a transactional email relay service (SendGrid, Amazon SES, Postmark) - Rolling out a DMARC policy from p=none to p=reject - Debugging emails landing in spam or ...

Linux firewall configuration skill: UFW (Uncomplicated Firewall), iptables, nftables fundamentals, and fail2ban intrusion prevention. USE WHEN: - Setting up UFW on a new server (default deny-in, allow-out, selective port opens) - Configuring rate limiting and per-IP connection limits with UFW or iptables - Installing and tuning fail2ban for SSH, Nginx, and custom application jails - Writing iptables NAT rules (MASQUERADE for WireGuard/VPN, DNAT for port forwarding) - Diagnosing lockouts, fai...

Health check and graceful shutdown patterns. Liveness and readiness probes, dependency health checks, Kubernetes probes, Spring Actuator health, and zero-downtime shutdown. USE WHEN: user mentions "health check", "liveness", "readiness", "probe", "graceful shutdown", "SIGTERM", "health endpoint", "/healthz" DO NOT USE FOR: monitoring dashboards - use `error-tracking` or `opentelemetry`; deployment strategies - use `deployment-strategies`

Background job queue systems. BullMQ (Node.js), Celery (Python), Sidekiq (Ruby), Spring Batch. Job scheduling, retries, priorities, concurrency control, and dead letter queues. USE WHEN: user mentions "job queue", "background job", "BullMQ", "Bull", "Celery", "worker", "async task", "task queue", "Sidekiq" DO NOT USE FOR: cron scheduling without queue - use `cron-scheduling`; message brokers - use messaging skills (Kafka, RabbitMQ)

Kubernetes container orchestration. Covers deployments, services, and configuration. Use for container orchestration. USE WHEN: user mentions "kubernetes", "k8s", "kubectl", "deployment", "pod", "service", "ingress", "configmap", "secret", asks about "container orchestration", "scaling", "rolling updates", "helm", "production cluster", "namespace" DO NOT USE FOR: local development environments - use `docker-compose` skill instead, Dockerfile creation - use `docker` skill instead, CI/CD work...

Linux (Ubuntu/Debian) server initial setup and ongoing administration skill. Covers new server hardening, user management, package management, file permissions, resource limits, log rotation, cron scheduling, and disk management. USE WHEN: - Performing initial setup of a fresh Ubuntu/Debian server (VPS, bare metal, cloud VM) - Hardening SSH, disabling root login, configuring sudo - Configuring system-level resource limits (ulimits, sysctl) for high-concurrency workloads - Managing users, gro...

Load balancing with Nginx and HAProxy. Covers upstream configuration, balancing algorithms, health checks, SSL termination, session persistence, and monitoring. USE WHEN: user mentions "load balancer", "nginx upstream", "haproxy", "nginx load balancing", "round robin", "least_conn", "ip_hash", "haproxy backend", "haproxy frontend", "haproxy acl", "haproxy stats", "ssl termination", "sticky session", "upstream health check", "nginx proxy", "haproxy health check" DO NOT USE FOR: Caddy reverse...

Nginx reverse proxy and web server configuration skill. USE WHEN: - Configuring Nginx as a reverse proxy in front of application servers (Node.js, Python, Ruby, Java) - Setting up HTTPS/TLS termination with certificates - Configuring virtual hosts, upstream load balancing, and rate limiting - Optimising static file serving, gzip compression, and cache headers - Adding security headers (HSTS, CSP, X-Frame-Options, X-Content-Type-Options) - Setting up WebSocket proxying - Diagnosing 502, 504, ...