chore: drop npm-dist machinery — pkg.pr.new covers it

`pkg.pr.new` (via `cr.yml`) auto-publishes SHA-pinned previews on every
push to main and works with any package manager, no `pnpm.overrides`
gymnastics. The `dist` branch + `build-dist.yml` workflow are redundant.

- Delete `.github/workflows/build-dist.yml`
- Drop the "Alternate install: dist branch + pnpm.overrides" section
  from README
- Trim the stale reference in `autofix.yml`'s comment

Remote `dist` branch will be deleted in a follow-up `git push --delete`.
`npm-dist` as its own project (https://github.com/runsascoded/npm-dist)
still has independent value for single-package repos or non-hosted
install paths.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: ryan-williams

.github/workflows/autofix.yml

@@ -2,11 +2,11 @@ name: autofix.ci
 
 # Disabled for the Open-Athena fork: autofix-ci/action fails with `The
 # autofix.ci action is not allowed to modify the .github directory` on every
-# main push, because our fork edits workflow files (this one, `pages.yml`,
-# `build-dist.yml`) outside of autofix.ci's allowlist. We don't depend on the
-# bot to commit lint fixes from CI — the husky / lint-staged pre-commit hook
-# already runs eslint --fix locally. Manual `workflow_dispatch` stays
-# available if anyone wants to re-enable per-push autofix behaviour.
+# main push, because our fork edits workflow files (this one, `pages.yml`)
+# outside of autofix.ci's allowlist. We don't depend on the bot to commit lint
+# fixes from CI — the husky / lint-staged pre-commit hook already runs
+# `eslint --fix` locally. Manual `workflow_dispatch` stays available if anyone
+# wants to re-enable per-push autofix behaviour.
 on: workflow_dispatch
 
 permissions:

.github/workflows/build-dist.yml

@@ -52,29 +52,9 @@ All three packages are required: `@slidev/cli` (the build/dev CLI) depends on `@
 
 `@slidev/types` is unchanged in this fork — pull it straight from upstream npm if needed.
 
-#### Alternate install: dist branch + `pnpm.overrides`
-
-A second install path exists for `pnpm` users who'd rather pull from a git ref directly: the [`dist` branch] is auto-built per push and contains reified `package.json`s for each fork package.
-
-```jsonc
-// package.json
-{
-  "pnpm": {
-    "overrides": {
-      "@slidev/cli":    "github:Open-Athena/slidev#dist&path:/packages/slidev",
-      "@slidev/client": "github:Open-Athena/slidev#dist&path:/packages/client",
-      "@slidev/parser": "github:Open-Athena/slidev#dist&path:/packages/parser"
-    }
-  }
-}
-```
-
-Pin `#dist` → `#<sha>` for reproducible builds. Overrides are required (rather than direct deps) because the dist `@slidev/cli` references its siblings by exact upstream version — direct deps would semver-mismatch.
-
 [`pkg.pr.new`]: https://pkg.pr.new
 [`cr.yml`]: https://github.com/Open-Athena/slidev/actions/workflows/cr.yml
 [`oa-slidev-theme`]: https://github.com/Open-Athena/oa-slidev-theme
-[`dist` branch]: https://github.com/Open-Athena/slidev/tree/dist
 
 ---