Refactor git to use runtime node:zlib

[aron-cf]

This change keeps git out of the default @cloudflare/computer bundle while preserving first-class git support for callers that opt in. Previously, the main Workspace graph made isomorphic-git reachable because workspace.git was wired by default. That meant non-git Workers could still carry a lazy git chunk in their build. At the same time, git users paid for isomorphic-git's bundled JavaScript pako compression implementation even though Workers provide node:zlib.

The new shape makes git an explicit Workspace capability. The default package graph no longer imports the git implementation. Callers that need git import createGitClient from @cloudflare/computer/git and pass the returned factory into WorkspaceOptions.git. That git subpath bundles isomorphic-git lazily and aliases pako to a small node:zlib compatibility layer, so git users still get the smaller compression payload while non-git users pay no git cost.

Default filesystem and shell usage does not configure git:

import { Workspace } from "@cloudflare/computer";

const workspace = new Workspace({
  storage: ctx.storage,
});

await workspace.fs.writeFile("/notes.md", "hello\n");

Git usage opts in through the git subpath:

import { Workspace } from "@cloudflare/computer";
import { createGitClient } from "@cloudflare/computer/git";

const workspace = new Workspace({
  storage: ctx.storage,
  git: createGitClient(),
  defaultGitIdentity: {
    name: "Agent",
    email: "agent@example.test",
  },
});

await workspace.git.init();
await workspace.fs.writeFile("/notes.md", "hello\n");
await workspace.git.add({ paths: ["notes.md"] });
await workspace.git.commit({ message: "add notes" });

Advanced tests and custom adapters can configure the factory before binding it to a workspace:

import { createGitClient } from "@cloudflare/computer/git";

const gitFactory = createGitClient({ adapter });
const git = gitFactory({ ws: workspace });

If workspace.git is accessed without WorkspaceOptions.git, it now throws a clear configuration error. The worker backend's built-in git command follows the same rule because it forwards to the host workspace's git client.

The bundle outcome is now split by use case. A default @cloudflare/computer import does not reference the git chunk, isomorphic-git, pako, or node:zlib. Git users opt into the git entrypoint and get the Worker-optimized lazy git chunk. In the current build, dist/index.js is about 165 KB raw and 36 KB gzip, the git wrapper is about 102 KB raw and 21 KB gzip, and the lazy isomorphic-git chunk is about 574 KB raw and 127 KB gzip.

Verification run locally:

npm run build --workspace @cloudflare/computer
npm run typecheck --workspace @cloudflare/computer
npm test --workspace @cloudflare/computer
npm run check

The package README and git interface documentation were updated to show the opt-in API and explain that the default package graph stays free of git.

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/cloudflare/computer/@cloudflare/computer@32

commit: 70933c3