chore(deps): update nuxt framework (282759e)

[IgorShevchik]

Syncs upstream nuxt/ui commit 282759e — chore(deps): update nuxt framework (#6751). Major framework bump plus the source/test fixes upstream shipped alongside it.

Manifests

nuxt / @nuxt/kit / @nuxt/schema ^4.4.8→^4.5.1, @unhead/vue ^2.1.16→**^3.2.3** (major), magic-string ^0.30.21→**^1.1.0** (major), vite ^7.3.6→**^8.1.5** in playgrounds/{repl,vue}. nuxt also bumped in docs, playgrounds/nuxt and playgrounds/demo (b24ui-only workspace — leaving it behind duplicated nuxt in the tree).

Ported from upstream

• vitest.config.ts — the #components plugin now returns a \0-prefixed virtual id. Vite 8 rewrites a returned #components into ?import#components (empty pathname), which its builtin resolver rejects.
• test/components/FormField.spec.ts — hoist vi.mock('vue') to the module top level (it is hoisted regardless; nesting it misrepresents execution order and vitest 4 warns).
• pnpm-workspace.yaml — @nuxt/kit override ^4.4.8→^4.5.1. The 4.4.8 kit has no buildDiagnostics export, which nuxt 4.5.1's CLI imports — this broke dev:prepare outright.

b24ui-specific

• pnpm-workspace.yaml: added vite: ^8.1.5 + rolldown: ~1.1.5 overrides. b24ui's dependency set (unplugin / unhead / vite-plugin-* peers, plus the legacy vitest-environment-nuxt upstream doesn't carry) otherwise resolves two vite copies (7.3.6 + 8.1.5) and two rolldown copies (1.1.5 + 1.2.0). Loading both native ABIs in one worker made all 125 nuxt-project test files fail at startup with Missing field `moduleType` (plugin builtin:replace, rolldown 1.2.0 executing inside vite 7.3.6). vite 8 pins rolldown ~1.1.5, which also satisfies unplugin (*).
• pnpm-workspace.yaml — corrected the stale @tiptap/pm override ^3.27.3→^3.29.0 left over from PR chore(deps): update tiptap to ^3.29.0 (bfe1177) #298.
• src/runtime/plugins/colors.ts — unhead v3 removed the UseHeadInput type (now ReactiveHead), breaking typecheck. headData is now typed Parameters<typeof useHead>[0], correct on both v2 and v3; the existing v2/v3 hooks.hook compat shim is untouched.

Skipped

• src/components/content/ContentNavigation.vue — absent in b24ui (N/A).
• test/utils/setup.ts iconify fetch stub — N/A: b24ui renders icons via @bitrix24/b24icons-vue, which imports icon components directly and never fetches the Iconify API, so there are no in-flight requests for happy-dom to abort.

Tests

Full suite green: 243 files, 5565 passed / 6 skipped — identical counts to before the bump, no snapshot drift. (A DropdownMenu 5s-timeout flake appeared once under full-suite contention; it passes isolated 68/68 and on re-run.)

Verify (CI=true)

dev:prepare · lint · typecheck · test · build — all green.

Ledger: cursor advanced to 282759e (upstream v4 HEAD); previous entry 34554bf reconciled to PR #299.

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