refactor: remove core-ui from main (scaffoldable via gen core-package ui)

Removal across all three consumers:
- apps/storybook: strips @repo/core-ui dep, clears stories glob (now []),
  removes globals.css import from preview.ts
- apps/web-next: strips @repo/core-ui dep + transpilePackages entry
- apps/web-tanstack: strips @repo/core-ui dep
- packages/core-ui: deleted entirely (28 files)

No app pages needed surgery — neither web-next nor web-tanstack source
files imported @repo/core-ui directly. The storybook app referenced it
only via the stories glob and the globals.css preview import.

Gates: 40/40 tasks successful, all 4 e2e byte-identical reconstructions
pass (realtime, events, trpc, ui).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pnpm-lock.yaml

@@ -86,10 +86,6 @@ importers:
         version: 3.2.4(@types/debug@4.1.13)(@types/node@22.19.17)(happy-dom@20.8.9)(jiti@2.6.1)(jsdom@25.0.1)(lightningcss@1.32.0)(sass@1.99.0)(terser@5.46.2)(tsx@4.21.0)
 
   apps/storybook:
-    dependencies:
-      '@repo/core-ui':
-        specifier: workspace:*
-        version: link:../../packages/core-ui
     devDependencies:
       '@repo/core-eslint':
         specifier: workspace:*
@@ -157,9 +153,6 @@ importers:
       '@repo/core-shared':
         specifier: workspace:*
         version: link:../../packages/core-shared
-      '@repo/core-ui':
-        specifier: workspace:*
-        version: link:../../packages/core-ui
       '@repo/marketing-pages':
         specifier: workspace:*
         version: link:../../packages/marketing-pages
@@ -251,9 +244,6 @@ importers:
       '@repo/core-shared':
         specifier: workspace:*
         version: link:../../packages/core-shared
-      '@repo/core-ui':
-        specifier: workspace:*
-        version: link:../../packages/core-ui
       '@repo/marketing-pages':
         specifier: workspace:*
         version: link:../../packages/marketing-pages
@@ -632,49 +622,6 @@ importers:
         specifier: ^3.1.0
         version: 3.2.4(@types/debug@4.1.13)(@types/node@25.5.2)(happy-dom@20.8.9)(jiti@2.6.1)(jsdom@25.0.1)(lightningcss@1.32.0)(sass@1.99.0)(terser@5.46.2)(tsx@4.21.0)
 
-  packages/core-ui:
-    dependencies:
-      clsx:
-        specifier: ^2.1.1
-        version: 2.1.1
-      react:
-        specifier: ^19.0.0
-        version: 19.2.4
-      tailwind-merge:
-        specifier: ^3.0.0
-        version: 3.5.0
-    devDependencies:
-      '@repo/core-eslint':
-        specifier: workspace:*
-        version: link:../core-eslint
-      '@repo/core-testing':
-        specifier: workspace:*
-        version: link:../core-testing
-      '@repo/core-typescript':
-        specifier: workspace:*
-        version: link:../core-typescript
-      '@storybook/react':
-        specifier: ^8.6.0
-        version: 8.6.18(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(storybook@8.6.18(prettier@3.8.1))(typescript@5.9.3)
-      '@testing-library/jest-dom':
-        specifier: ^6.5.0
-        version: 6.9.1
-      '@testing-library/react':
-        specifier: ^16.0.0
-        version: 16.3.2(@testing-library/dom@10.4.1)(@types/react-dom@19.2.3(@types/react@19.2.14))(@types/react@19.2.14)(react-dom@19.2.4(react@19.2.4))(react@19.2.4)
-      '@testing-library/user-event':
-        specifier: ^14.5.0
-        version: 14.6.1(@testing-library/dom@10.4.1)
-      '@types/react':
-        specifier: ^19.0.0
-        version: 19.2.14
-      jsdom:
-        specifier: ^25.0.0
-        version: 25.0.1
-      vitest:
-        specifier: ^3.0.0
-        version: 3.2.4(@types/debug@4.1.13)(@types/node@25.5.2)(happy-dom@20.8.9)(jiti@2.6.1)(jsdom@25.0.1)(lightningcss@1.32.0)(sass@1.99.0)(terser@5.46.2)(tsx@4.21.0)
-
   packages/marketing-pages:
     dependencies:
       '@repo/auth':
@@ -6913,9 +6860,6 @@ packages:
   tabbable@6.4.0:
     resolution: {integrity: sha512-05PUHKSNE8ou2dwIxTngl4EzcnsCDZGJ/iCLtDflR/SHB/ny14rXc+qU5P4mG9JkusiV7EivzY9Mhm55AzAvCg==}
 
-  tailwind-merge@3.5.0:
-    resolution: {integrity: sha512-I8K9wewnVDkL1NTGoqWmVEIlUcB9gFriAEkXkfCjX5ib8ezGxtR3xD7iZIxrfArjEsH7F1CHD4RFUtxefdqV/A==}
-
   tailwindcss@4.2.2:
     resolution: {integrity: sha512-KWBIxs1Xb6NoLdMVqhbhgwZf2PGBpPEiwOqgI4pFIYbNTfBXiKYyWoTsXgBQ9WFg/OlhnvHaY+AEpW7wSmFo2Q==}
 
@@ -14527,8 +14471,6 @@ snapshots:
 
   tabbable@6.4.0: {}
 
-  tailwind-merge@3.5.0: {}
-
   tailwindcss@4.2.2: {}
 
   tapable@2.3.2: {}