test(cache): real-vite integration fixtures + playground

[branchseer]

Adds the real-vite e2e coverage: vite_build_cache exercises
runner-aware cache behaviour through vite build against the
companion vite PR (NODE_ENV-change invalidation, envPrefix-driven
tracked-env set, dist/ write restoration on cache hit), and
vite_dev_disable_cache verifies disableCache() short-circuits
the dev server's run from the cache.

Wires the rest of the consumer-side bits needed for vite (consumed
via the github: spec for vite-task-client) to install cleanly:

• Pins root packageManager to pnpm@10.33.4 matching the vite
  PR's pnpm, removing a per-install version switch that produced
  an outer-vs-inner lockfile-settings mismatch when vite consumed
  vite-task as a git dep.
• Drops the root prepare: husky so pnpm's git-dep flow doesn't
  invoke pnpm pack, which had been producing a lockfile
  resolution entry without the path: field — pnpm then
  extracted the entire vite-task monorepo into
  node_modules/@voidzero-dev/vite-task-client/ instead of the
  subpath.
• Pins the vite catalog entry to a commit-specific pkg.pr.new
  URL so future bumps require updating this line.
• Sets blockExoticSubdeps: false so pnpm 11 doesn't reject the
  transitive github: spec.

Refreshes the playground to use the published vite + the runner-
aware tools.

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

[branchseer]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
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• test(cache): real-vite integration fixtures + playground #408 👈 (View in Graphite)
• feat(cache): integrate runner-aware IPC reports #407
• refactor(execute): reshape for IPC server lifecycle #406
• feat(client): napi binding + JS wrapper #405
• feat(ipc): protocol + Rust transport #404
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

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[chatgpt-codex-connector]

Add Vite to the test toolchain dependencies

This adds a catalog entry for Vite, but catalog entries do not install packages by themselves. The e2e harness resolves these new ignored fixtures by putting packages/tools/node_modules/.bin on PATH and symlinking packages/tools/node_modules/vite; since packages/tools/package.json still does not depend on vite, a clean pnpm install will not create that binary and vt run --cache build in this fixture fails before exercising the cache behavior. Please add vite: "catalog:" to the installed toolchain package (and update the lockfile) or otherwise make the fixture install it.

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[branchseer]

Superseded by restructured 2-PR stack:

• feat(client): vite-task-client JS package #409 — vite-task-client JS package
• feat(ipc): protocol + Rust transport #410 — Rust crates + runner integration (5 commits, one per closed PR)