Develop an intuitive Portfolio Builder web application that enables designers, software engineers, and creative freelancers to launch responsive personal websites quickly. The app should include a visual profile editor to manage biography text, avatar images, location tags, technical skill badges, and social media profile links. Build an interactive project manager where creators can add work items, upload cover image graphics, write detailed markdown case studies, tag technologies used, and organize work into filterable portfolio categories. Include a theme customizer drawer allowing users to switch between visual themes (Minimalist Light, Sleek Dark, Bold Editorial) and customize primary accent colors live. Feature an interactive work experience timeline component, client testimonial quote sliders, downloadable resume buttons, and a functional contact inquiry form that emails client messages directly to portfolio owners. Include custom domain attachment guidance screens, SEO meta tag editors, and Google Analytics snippet integration options.