Dev builds internal-linking system to help new tool pages rank on Google

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A solo developer building an image-processing tool in public documented week 17 of their project, focusing not on new features but on SEO infrastructure. After shipping an AI background remover the previous week, they discovered the new tool's pages were orphaned — reachable via sitemap but not linked from anywhere on the site. To fix this, they replaced scattered hardcoded link lists with a single source-of-truth constant that automatically cross-links a hub page and its use-case spoke pages. The same constant also drives layout logic and populates a footer column, meaning any future spoke page requires just one line of code to be fully integrated. A React hydration error caused by invalid HTML nesting was also caught and resolved during the process.

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