Development skills

Uses the gh-axi CLI for GitHub shell operations: issue, pull request, workflow run, release, repo, search, and API tasks. Prefer this over regular `gh` for GitHub reads and simple mutations when an agent needs compact, structured, suggestion-rich output. Triggers on: gh, GitHub CLI, github issue, github pr, pull request, workflow run, github release, gh api, repo inspection, list PRs, view issue, check workflow runs, inspect repo, GitHub shell operations.

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Uses the chrome-devtools-axi CLI for browser automation, accessibility-tree snapshots, console and network inspection, screenshots, Lighthouse audits, and performance traces. Use when interacting with Chrome from the shell, especially when the user mentions chrome-devtools-axi, AX snapshots, browser debugging, or DevTools automation from the command line.

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Manage Linear issues from the command line using the linear CLI. Use when creating, updating, listing, or searching Linear issues, managing projects, cycles, milestones, or initiatives, or making Linear API calls.

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Time-boxed throwaway investigation to answer one hard question. Use when facing technical uncertainty before committing to a frontier item or scoped slice — the output is knowledge, not production code.

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Automatic code splitting (autoCodeSplitting), .lazy.tsx convention, createLazyFileRoute, createLazyRoute, lazyRouteComponent, getRouteApi for typed hooks in split files, codeSplitGroupings per-route override, splitBehavior programmatic config, critical vs non-critical properties.

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TanStack Router bundler plugin for route generation and automatic code splitting. Supports Vite, Webpack, Rspack, and esbuild. Configures autoCodeSplitting, routesDirectory, target framework, and code split groupings.

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d3k assistant for debugging web apps

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Deep expertise in cmux — the terminal multiplexer with native browser views. Use when managing panes, reading terminal output, sending keystrokes, opening browser views, or manually testing web UIs and TUIs inside cmux. Triggers on: cmux, open a browser pane, split terminal, read screen, send keys, test this UI in cmux, preview in cmux.

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Full type inference philosophy (never cast, never annotate inferred values), Register module declaration, from narrowing on hooks and Link, strict:false for shared components, getRouteApi for code-split typed access, addChildren with object syntax for TS perf, LinkProps and ValidateLinkOptions type utilities, as const satisfies pattern.

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Plan a refactor as a sequence of tiny safe commits via interview and codebase exploration. Use when restructuring working code, or when the user says 'plan a refactor'.

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Chrome DevTools CLI for browser automation via shell commands. Use when interacting with web pages from the command line — navigating, clicking, filling forms, inspecting console/network, taking screenshots, or extracting page content. Triggers on: browse a page, automate Chrome, inspect console, check network requests, take a screenshot, fill a form, click a button.

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Search the live web via Perplexity Search API. Use when you need current documentation, release notes, vendor pages, news, domain-constrained web search, or date/recency filtering. Not for local codebase search or stable docs already in context.

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React bindings for TanStack Router: RouterProvider, useRouter, useRouterState, useMatch, useMatches, useLocation, useSearch, useParams, useNavigate, useLoaderData, useLoaderDeps, useRouteContext, useBlocker, useCanGoBack, Link, Navigate, Outlet, CatchBoundary, ErrorComponent. React-specific patterns for hooks, providers, SSR hydration, and createLink with forwardRef.

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Run an extremely strict maintainability review for abstraction quality, giant files, and spaghetti-condition growth. Use for a thermo-nuclear code quality review, thermonuclear review, deep code quality audit, or especially harsh maintainability review.

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Annuler un envoi de courrier papier déjà validé via l'API Merci Facteur (deleteEnvoi). Utiliser quand il s'agit d'annuler, supprimer, stopper, rappeler ou rembourser un courrier envoyé par erreur, d'implémenter une fenêtre d'annulation dans une application, ou de comprendre pourquoi une annulation n'a été que partielle. Couvre le contrat deleteEnvoi, l'irréversibilité de l'opération et les quatre issues possibles.

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Obtenir et gérer un access token pour l'API Merci Facteur (envoi de courrier papier, recommandé, recommandé électronique). Utiliser dès qu'un appel à l'API Merci Facteur doit être authentifié, ou quand apparaît une erreur de signature, de timestamp, de restriction d'IP ou un token expiré. Couvre le calcul HMAC-SHA256 de la secret key, getToken, la durée de vie du token jusqu'à 365 jours (timeLimit, force) et le stockage des identifiants.

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Récupérer les preuves d'un courrier envoyé via l'API Merci Facteur avec getProof — preuve de dépôt, avis de réception signé, preuve de téléchargement d'un recommandé électronique. Utiliser quand il s'agit de récupérer, télécharger, archiver ou afficher un AR, une preuve de dépôt ou un justificatif d'envoi, ou de savoir si un recommandé a été distribué.

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Drive Blender via the catalog blender MCP, with bpy recipes.

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Build, test, and deploy Python MCP servers.

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Structured decision-making framework for technical proposals and trade-off analysis. When the user faces a choice between multiple approaches (architecture decisions, tool selection, refactoring strategies, migration paths), this skill produces a 1-3-1 format: one clear problem statement, three distinct options with pros/cons, and one concrete recommendation with definition of done and implementation plan. Use when the user asks for a "1-3-1", says "give me options", or needs help choosing between competing approaches.

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Delegate coding to OpenHands CLI (model-agnostic, LiteLLM).

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Manual OAuth for remote MCP servers on headless gateways.

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List, auth, and call MCP servers/tools from the terminal.

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Poll RSS, JSON APIs, and GitHub with watermark dedup.

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