Flue packs Cloudflare agents into 43 lines

Flue reads less like a flashy vibecoding demo and more like a practical agent runtime blueprint for teams that want real deployment semantics. The "43 lines" hook sells the simplicity, but the real story is the composable agent stack underneath.

• –Cloudflare Workers and Durable Objects give the framework a credible path to persistence, routing, and long-lived sessions.
• –The R2-mounted knowledge base pattern is especially useful for support bots and internal copilots that need filesystem-like access.
• –The `flue dev` and `flue run` flows keep local testing close to production, which matters more than minimal line count.
• –The guide is strongest for developers already building agent workflows; it is less compelling if you want a no-code wrapper around an LLM.
• –The marketing angle is a bit louder than the feature set, but the underlying agent primitives look genuinely useful.