Allow `vp config` to install hooks without forcing `vp staged`

[Perdolique]

Describe the bug

I want Vite+ to install the Git hook dispatcher while keeping a custom pre-commit hook that runs whole-project checks. For example:

vp run lint
vp exec tsc --noEmit

Currently, vp config appends vp staged to the existing hook and adds a staged block to vite.config.ts.

--no-hooks does not cover this use case because it also skips dispatcher installation, so the setup is not reproducible on a fresh clone.

Reproduction

Not required

Steps to reproduce

No response

System Info

Tool Paths:
  node  /Users/user/.vite-plus/js_runtime/node/26.5.0/bin/node
  npm   /Users/user/.vite-plus/js_runtime/node/26.5.0/bin/npm
  npx   /Users/user/.vite-plus/js_runtime/node/26.5.0/bin/npx

Package Manager:
  Name          pnpm
  Version       11.17.0
  Source        packageManager
  Source Path   /Users/user/src/user/repo/package.json
  Project Root  /Users/user/src/user/repo
  Bin Path      /Users/user/.vite-plus/package_manager/pnpm/11.17.0/pnpm/bin/pnpm

vp v0.2.6

Local vite-plus:
  vite-plus  v0.2.6

Tools:
  vite             v8.1.5
  rolldown         v1.2.0
  vitest           v4.1.10
  oxfmt            v0.60.0
  oxlint           v1.75.0
  oxlint-tsgolint  v7.0.2001
  tsdown           v0.22.13

Environment:
  Package manager  pnpm v11.17.0
  Node.js          v26.5.0 (.node-version)

Used Package Manager

pnpm

Logs

Validations

• Read the Contributing Guidelines.
• Check that there isn't already an issue for the same bug.
• Confirm this is a Vite+ issue and not an upstream issue (Vite, Vitest, tsdown, Rolldown, or Oxc).
• The provided reproduction is a minimal reproducible example.