https://paulund.co.uk Developer notebook — articles on AI, and software engineering. en Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/resources/agent-skills-engineering-workflows-for-ai-agents A collection of 19 production-grade engineering skills for AI coding agents, covering the full development lifecycle from spec writing through to shipping. Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/resources/agent-skills-engineering-workflows-for-ai-agents https://paulund.co.uk/resources/awesome-design-md A curated collection of DESIGN.md files for 58 popular platforms, giving AI coding agents the design context they need to generate pixel-perfect UI. Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/resources/awesome-design-md https://paulund.co.uk/notebook/react/composition-over-prop-drilling How to use children as a prop, slot patterns, and component composition to avoid passing props through layers of components that don't care about them. Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/notebook/react/composition-over-prop-drilling https://paulund.co.uk/notebook/nextjs/deploying-nextjs-to-cloudflare-pages How I deploy a statically exported Next.js 15 site to Cloudflare Pages with GitHub Actions, plus the gotchas around output mode, images, and route handl... Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/notebook/nextjs/deploying-nextjs-to-cloudflare-pages https://paulund.co.uk/notebook/nextjs/image-optimisation-in-nextjs How next/image works, the constraints of static export (unoptimized mode), and practical approaches to serve fast images whether you have a server or not. Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/notebook/nextjs/image-optimisation-in-nextjs https://paulund.co.uk/notebook/nextjs/incremental-static-regeneration-explained What ISR does, how revalidation works, when ISR is better than full static or dynamic rendering, and what you lose when you move to output: 'export'. Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/notebook/nextjs/incremental-static-regeneration-explained https://paulund.co.uk/notebook/nextjs/middleware-patterns-in-nextjs What Next.js middleware can and can't do, useful patterns for auth checks and redirects, and the performance cost of running code on every request. Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/notebook/nextjs/middleware-patterns-in-nextjs https://paulund.co.uk/notebook/react/react-server-components-vs-client-components A practical mental model for React Server Components and Client Components, when each runs, where the boundary sits, and how to think about passing data... Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/notebook/react/react-server-components-vs-client-components https://paulund.co.uk/notebook/nextjs/nextjs-app-router-mental-model A working mental model for the Next.js App Router covering layouts, pages, route groups, nested routing, and the request lifecycle from URL to rendered ... Wed, 08 Apr 2026 00:00:00 GMT https://paulund.co.uk/notebook/nextjs/nextjs-app-router-mental-model https://paulund.co.uk/resources/github-copilot-cli-byok-local-models GitHub Copilot CLI lets you connect your own API provider or run local models like Ollama and vLLM, removing the GitHub account requirement entirely. Tue, 07 Apr 2026 00:00:00 GMT https://paulund.co.uk/resources/github-copilot-cli-byok-local-models https://paulund.co.uk/releases/paulundai-v220-docker-marketing-and-saas-plugins Version 2.2.0 of the paulund/ai Claude Code plugin collection adds three new plugins covering Docker Compose, marketing content, and SaaS product strate... Thu, 02 Apr 2026 00:00:00 GMT https://paulund.co.uk/releases/paulundai-v220-docker-marketing-and-saas-plugins https://paulund.co.uk/notebook/docker/docker-compose-healthchecks Learn how to use Docker Compose healthchecks and depends_on conditions to prevent containers from starting before their dependencies are actually ready. Tue, 31 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/docker/docker-compose-healthchecks https://paulund.co.uk/notebook/design-patterns/template-method-design-pattern Learn how the Template Method design pattern works in PHP, with a practical AI provider driver example and a look at how Laravel uses the same approach ... Tue, 31 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/design-patterns/template-method-design-pattern https://paulund.co.uk/notebook/laravel/testing-in-laravel A practical guide to writing tests in Laravel with Pest, covering feature tests, unit tests, database factories, HTTP testing, and what to actually test... Fri, 27 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/laravel/testing-in-laravel https://paulund.co.uk/notebook/career/linkedin-profile Guidance on creating and optimising a LinkedIn profile to attract recruiters and showcase your software development experience and career highlights. Fri, 20 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/career/linkedin-profile https://paulund.co.uk/notebook/ai/ai-job-interviews AI tools have broken traditional software engineering interviews. Here's how hiring practices need to change in 2026 and what better assessment looks like. Thu, 19 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/ai/ai-job-interviews https://paulund.co.uk/resources/claude-cowork-dispatch-mobile Claude CoWork lets you dispatch coding tasks to your desktop from your phone, keeping a single persistent thread that syncs progress across all devices. Thu, 19 Mar 2026 00:00:00 GMT https://paulund.co.uk/resources/claude-cowork-dispatch-mobile https://paulund.co.uk/notebook/ai/everything-is-markdown-now Why building AI workflows in plain text gives you model portability, and why everything from CLAUDE.md to MCP configs belongs in version-controlled mark... Thu, 19 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/ai/everything-is-markdown-now https://paulund.co.uk/notebook/career/saas-vs-open-source-in-the-age-of-ai-coding AI can rebuild most SaaS MVPs in an afternoon. So should you still build one? A framework for deciding between SaaS and open source in 2026, and what it... Thu, 19 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/career/saas-vs-open-source-in-the-age-of-ai-coding https://paulund.co.uk/notebook/ai/software-engineering-in-the-age-of-ai Why AI tools amplify engineering skill rather than replace it, and what strong software engineers focus on in a world where code generation is cheap. Thu, 19 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/ai/software-engineering-in-the-age-of-ai https://paulund.co.uk/resources/claude-code-scheduled-tasks-loop Claude Code v2.1.72 adds session-scoped scheduled tasks. Use /loop to poll a deployment, babysit a PR, or re-run any slash command on a repeating interval. Wed, 18 Mar 2026 00:00:00 GMT https://paulund.co.uk/resources/claude-code-scheduled-tasks-loop https://paulund.co.uk/resources/laravel-13-released Laravel 13 ships a first-party AI SDK, JSON:API resources, native vector search with pgvector, and PHP attribute-driven configuration for jobs and contr... Wed, 18 Mar 2026 00:00:00 GMT https://paulund.co.uk/resources/laravel-13-released https://paulund.co.uk/resources/opencode-open-source-coding-agent An open-source alternative to Claude Code that lets you pick your own model, including local and open source ones, with support for 75+ providers. Wed, 18 Mar 2026 00:00:00 GMT https://paulund.co.uk/resources/opencode-open-source-coding-agent https://paulund.co.uk/notebook/project-docs/a-reusable-prd-framework-for-standard-saas-features Most SaaS products share the same 80% of features. Here's a reusable PRD framework so you never have to document authentication, billing, or email flows... Tue, 17 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/project-docs/a-reusable-prd-framework-for-standard-saas-features https://paulund.co.uk/releases/paulundai-v210-github-actions-and-claude-code-skill Version 2.1.0 adds a GitHub Actions skill to the paulund/ai plugin collection, covering how to automate Claude Code tasks in CI/CD pipelines with authen... Tue, 17 Mar 2026 00:00:00 GMT https://paulund.co.uk/releases/paulundai-v210-github-actions-and-claude-code-skill https://paulund.co.uk/notebook/project-docs/project-spec A practical guide to writing a project specification before development begins, covering goals, scope, tech choices, timeline, and acceptance criteria. Tue, 17 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/project-docs/project-spec https://paulund.co.uk/notebook/deployments/website-go-live-checklist A checklist of tasks to complete before launching a website to ensure it is ready for public access, covering SEO, performance, security, and monitoring. Tue, 17 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/deployments/website-go-live-checklist https://paulund.co.uk/notebook/design-patterns/adapter-design-pattern Learn the Adapter design pattern with practical PHP examples, showing how to make incompatible interfaces work together through a simple wrapper class. Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/design-patterns/adapter-design-pattern https://paulund.co.uk/notebook/ai/ai-rules How to define rules and guidelines for AI coding tools like Claude Code and GitHub Copilot to ensure generated code aligns with your project standards. Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/ai/ai-rules https://paulund.co.uk/notebook/laravel/contextual-attributes-in-laravel How to use Laravel's contextual attributes to inject different implementations of an interface depending on the class that needs it, without cluttering ... Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/laravel/contextual-attributes-in-laravel https://paulund.co.uk/notebook/career/github-profile How to create and optimise a GitHub profile to showcase your work and coding skills to potential employers, including pinned repos and a profile README. Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/career/github-profile https://paulund.co.uk/notebook/laravel/laravel-pint-code-style-formatting A guide to using Laravel Pint for automated PHP code style formatting, covering installation, configuration, available rule presets, and CI integration. Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/laravel/laravel-pint-code-style-formatting https://paulund.co.uk/releases/paulundai-v200-writing-php-and-wordpress-plugins Version 2.0.0 of the paulund/ai Claude Code plugin collection adds three new plugins covering technical writing, PHP 8.3+ best practices, and WordPress ... Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/releases/paulundai-v200-writing-php-and-wordpress-plugins https://paulund.co.uk/notebook/php/rector-automated-php-code-refactoring A guide to using Rector for automated PHP code refactoring and modernisation, including installation, configuration, and common use cases for PHP 8.3 an... Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/php/rector-automated-php-code-refactoring https://paulund.co.uk/notebook/laravel/scheduled-tasks-in-laravel How to define and manage scheduled tasks in Laravel using the task scheduler, including cron setup, common schedule frequencies, and best practices. Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/laravel/scheduled-tasks-in-laravel https://paulund.co.uk/notebook/laravel/security-headers-in-laravel How to add HTTP security headers to a Laravel 12 application to protect against clickjacking, XSS, content injection, and other browser-based attacks. Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/laravel/security-headers-in-laravel https://paulund.co.uk/notebook/vscode/vscode-settings A comprehensive VSCode settings.json configuration covering editor typography, cursor settings, workbench appearance, extensions, and performance optimi... Mon, 16 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/vscode/vscode-settings https://paulund.co.uk/notebook/ai/claude-skills A complete guide to Claude Skills — what they are, how to build them, file structure, YAML requirements, workflow patterns, testing, and distribution. Fri, 13 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/ai/claude-skills https://paulund.co.uk/notebook/ai/claude-sub-agents How sub-agents work in Claude Code, covering the exploration, planning, and implementation phases, and practical tips for writing effective agent prompts. Fri, 13 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/ai/claude-sub-agents https://paulund.co.uk/notebook/php/phpstan-static-analysis-for-php A guide to using PHPStan for static analysis in PHP projects, covering installation, configuration, analysis levels, and best practices for PHPStan 2.x. Sun, 08 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/php/phpstan-static-analysis-for-php https://paulund.co.uk/notebook/laravel/rate-limiting-in-laravel How to implement rate limiting in Laravel to protect your routes and API endpoints from abuse, using the throttle middleware and custom rate limiters. Sun, 08 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/laravel/rate-limiting-in-laravel https://paulund.co.uk/notebook/ai/claudemd-file How to write an effective CLAUDE.md project instructions file for Claude Code, covering what to include and how Claude uses it to understand your codebase. Sat, 07 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/ai/claudemd-file https://paulund.co.uk/notebook/design-patterns/builder-design-pattern Learn the Builder design pattern with PHP examples. Covers the Director, Builder, Concrete Builder, and Product roles, and when to use this pattern. Thu, 05 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/design-patterns/builder-design-pattern https://paulund.co.uk/notebook/deployments/cicd An overview of Continuous Integration and Continuous Deployment, covering automation tools and workflows for deploying code reliably to production. Thu, 05 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/deployments/cicd https://paulund.co.uk/notebook/deployments/containerisation How to package your application and its dependencies into container images for consistent, reproducible deployments across any environment you target. Thu, 05 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/deployments/containerisation https://paulund.co.uk/releases/cron-manager-v100-manage-laravel-scheduled-tasks Cron Manager is a self-hosted web UI for managing Laravel cron jobs from a database, removing the need to edit PHP files or crontabs to change your sche... Thu, 05 Mar 2026 00:00:00 GMT https://paulund.co.uk/releases/cron-manager-v100-manage-laravel-scheduled-tasks https://paulund.co.uk/notebook/git/git-branching-strategies An overview of the most common Git branching strategies — Git Flow, trunk-based development, GitHub Flow, and more — with guidance on choosing the right... Thu, 05 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/git/git-branching-strategies https://paulund.co.uk/notebook/good-code/managing-cognitive-load-in-code How cognitive load affects software development, what causes it, and practical strategies to reduce it by writing simpler, clearer code. Thu, 05 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/good-code/managing-cognitive-load-in-code https://paulund.co.uk/releases/viewhook-011-docker-images-now-built-for-arm64 Viewhook v0.1.1 adds multi-architecture Docker image builds, so you can run it natively on Apple Silicon and ARM-based servers without emulation. Thu, 05 Mar 2026 00:00:00 GMT https://paulund.co.uk/releases/viewhook-011-docker-images-now-built-for-arm64 https://paulund.co.uk/notebook/architecture/architecture-diagrams Guidelines for creating and maintaining architecture diagrams using the C4 model and tools like Structurizr and Mermaid. Wed, 04 Mar 2026 00:00:00 GMT https://paulund.co.uk/notebook/architecture/architecture-diagrams