feat(projects): add VSC VSIX Manifest Designer

Author: CalvinAllen

src/content/projects/vsc-vsixmanifestdesigner/cover.png

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+---
+title: "VSC VSIX Manifest Designer"
+description: "A visual designer for VS Code extension manifest (package.json) files, bringing the same modern editing experience to VS Code extension development."
+longDescription: "VS Code extensions use package.json as their manifest, but editing it by hand can be tedious and error-prone. VSC VSIX Manifest Designer provides a visual editor with validation, making extension development more intuitive."
+category: "vscode-extension"
+repoUrl: "https://github.com/CodingWithCalvin/VSC-VsixManifestDesigner"
+techStack: ["TypeScript", "Svelte", "Vite", "VS Code Extension API"]
+language: "TypeScript"
+status: "active"
+startDate: "2026-01-20"
+stars: 0
+marketplace:
+  type: "vs-marketplace"
+  url: "https://marketplace.visualstudio.com/items?itemName=CodingWithCalvin.vsix-manifest-designer"
+---
+
+
+
+VSC VSIX Manifest Designer provides a visual editor for VS Code extension manifests. Instead of manually editing package.json, use an intuitive form-based interface with validation and helpful guidance.
+
+## Features
+
+- Visual editor for package.json manifest files
+- Field validation and error checking
+- Clean, modern UI using VS Code theming
+- Custom Editor API integration - open with right-click
+- Round-trip preservation of formatting and non-extension fields