Fidelity框架的共享开发守护进程。

个人和代理使用 Bozzetto 编辑、构建并运行共享的谱号项目。客户端在更改文件前明确打开 Composer 项目会话并保留编辑权限。Composer 是一个差分编译器，因此构建只重新编译变更影响的内容。Composer 仅在编译器接受该工件时才允许执行。MCP 客户端、浏览器和命令行工具在 Composer 权限下共享会话。浏览器显示守护进程健康状态、租约和代理工作状态。操作日志显示所有调用者的已确定非状态 Composer 操作，包括拒绝和有界运行输出（日志所有者、主管、页面）。

架构 ·作曲者工作流程 ·运维 ·入门 ·文档

名字

bozzetto（意大利语，发音为bot-SET-oh）是雕塑家在开始完整作品前用泥土或蜡塑形的小型模型。该词是bozzo（“草图”或“粗糙的石头”）的缩小形式（Merriam-Webster，大英百科全书）。顾客看到bozzetto后会请求更换，而换款费用仍然较低。

Bozzetto

A shared development daemon for the Fidelity Framework.

People and agents use Bozzetto to edit, build and run a shared Clef project. Clients explicitly open Composer project sessions and reserve edits before changing files. Composer is a differential compiler, so builds recompile only what a change affects. Composer allows execution only if the compiler has accepted the artifact. MCP clients, the browser and command-line tools share sessions under Composer’s authority. The browser shows daemon health, leases and the agents at work. The operations journal shows settled non-status Composer operations from all callers, including refusals and bounded run output (journal owner, supervisor, page).

Architecture · Composer workflow · Operations · Get started · Documentation

The Name

A bozzetto (Italian, pronounced bot-SET-oh) is the small model a sculptor shapes in clay or wax before starting the full work. The word is the diminutive of bozzo, “sketch” or “rough stone” (Merriam-Webster, Britannica). A patron sees the bozzetto and asks for changes while a change still costs little.

The model gives an idea enough substance to be judged: proportion, movement and the relationship between parts become visible before the sculptor commits to the finished material. Bozzetto offers the same exchange between making and examining. A definition or a change is tried against a real project, its consequences are shown as compiler evidence and execution, and it is revised while the work is still open, with people and agents inspecting the same work.

The connection to Atelier is deliberate. An atelier is an artist’s workshop, where sketches, models, tools and unfinished pieces are brought together. Atelier is Fidelity’s editing and workbench environment: source beside compiler graphs, proof evidence, execution results and debugging views. Bozzetto is its companion, coordinating the shared compiler workspace and execution behind those views through Composer’s contracts. Atelier is the place to arrange, edit and inspect the work; Bozzetto keeps the sessions and execution that people and agents rely on coordinated, so no single interface becomes the owner of compiler meaning.

How Bozzetto Works

One long-running daemon owns a single Composer supervisor. Clients connect to that supervisor, which manages an isolated compiler worker containing the live project sessions. The daemon and worker are deployed together, and their PSG contract fingerprints are checked to confirm that they match.

flowchart LR
  MCP[MCP clients] --> D[Bozzetto daemon]