feat(admin): add post resource store poc

[Innei]

Summary

• Add a normalized post/category resource store POC for admin UI state, including relation indexes and query-keyed list indexes.
• Hydrate React Query transport results into the resource store while keeping business entities out of Query data; resource query hooks return only receipts/status.
• Add a class-based optimistic transaction lifecycle for post mutations, including request success commit and error rollback.
• Wire the resource store into real category management, category detail post lists, tag detail post lists, and the post write/edit page.
• Use the transaction engine for post edit saves so list/detail projections receive optimistic updates and rollback on request failure.
• Refactor resource-backed view components to self-consume store data by id/query key instead of receiving entity arrays through props.

Verification

• rtk pnpm -C apps/admin run typecheck
• rtk pnpm -C apps/admin exec vitest run src/data/post-category-resource/store.test.ts (9 tests; Vitest still prints the existing close-timeout warning)
• rtk proxy git diff --check -- apps/admin/src/data/post-category-resource apps/admin/src/features/posts apps/admin/src/features/categories apps/admin/src/features/write/components/WriteRouteViewsContent.tsx
• rtk pnpm -C apps/admin run build (passes with existing Vite/Rolldown warnings)

Known limitation

• rtk pnpm -C apps/admin run lint could not run because the current worktree does not expose the oxlint binary: sh: oxlint: command not found.

[safedep]

SafeDep Report Summary

Package Details

Package	Malware	Vulnerability	Risky License	Report
immer @ 11.1.8 apps/admin/package.json pnpm-lock.yaml				🔗

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