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Spellcast

Spellcast

Desktop stage for coding agents: bubbles & Canvas

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Spellcast was built with GPT-6 Astra. I used Astra heavily to design and ship the desktop stage: passive bubbles for side thoughts, an editable Canvas for results, and completion notices when a turn ends. That burned through my Astra Pro 20x before launch day. Runtime target today: Codex on Windows (MCP + hooks). Local-first, open source, EN/中文 UI. The clip shows one host path; the core idea is the desktop stage around the agent.

Spellcast makers

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Darryl90后个人独立开发 | 全职开发游戏中
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