chore(phase4): Redux migration validation - initial fixes

Phase 4: Validation & Testing Progress

FIXED:
- Updated fakemui-registry.ts import paths (99 import errors eliminated)
- Upgraded @reduxjs/toolkit to 2.0.0 across all redux workspaces
- Created fakemui/package.json with proper workspace exports
- Added fakemui to root workspace configuration

VERIFIED:
- TanStack Query completely removed from dependencies
- Redux infrastructure properly configured
- Dependency tree now valid (no ELSPROBLEMS)

BUILD STATUS:
- Fakemui module resolution: FIXED
- React-Redux version conflict: FIXED
- Missing SCSS modules in fakemui: IDENTIFIED (non-blocking for Phase 4)
- Workflow service references: IDENTIFIED (pre-existing, deferred to Phase 5)

NEXT STEPS:
- Resolve missing SCSS files in fakemui components
- Address @metabuilder/workflow package references
- Run unit and E2E tests
- Generate Phase 4 final report

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

old/package.json

@@ -47,7 +47,6 @@
         "@radix-ui/react-tooltip": "^1.1.8",
         "@tailwindcss/container-queries": "^0.1.1",
         "@tailwindcss/vite": "^4.1.11",
-        "@tanstack/react-query": "^5.83.1",
         "@types/jszip": "^3.4.0",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",