* 👷 chore(ci): unify CI package manager from bun to pnpm
Replace bun with pnpm across all GitHub Actions workflows to ensure
lockfile consistency with pnpm-lock.yaml as single source of truth.
* 👷 chore(ci): replace bun run with pnpm run in package.json scripts
Fix build failure in CI where bun is not installed. Replace bun run
references in root and e2e package.json scripts with pnpm run.
* 👷 chore(e2e): replace bunx with npx in e2e server startup
* 👷 chore(ci): create unified setup-env action, use pnpm install + bun run
- Add .github/actions/setup-env composite action (pnpm + bun + node)
- Refactor desktop-build-setup to use setup-env internally
- All workflows: pnpm install for deps, bun run for scripts
- Revert package.json/e2e scripts back to bun run
- Remove all direct pnpm/action-setup and oven-sh/setup-bun from workflows
* 🐛 fix(test): inline lexical ESM deps for vitest under pnpm
pnpm's strict node_modules layout causes vitest ESM resolution to fail
for lexical's named exports. Add lexical and @lexical/* to inline deps.
Innei