feat: add reload button when model list fails to load

[liangfung]

Summary

• Show a reload button in the model selector dropdown when hosted models (Super/Swift) fail to load or are empty
• Add refreshModelList method to the vscode host bridge to trigger model list refresh
• Implement refresh logic in useModelList hook with loading state management
• Update i18n translations for reload button text across all languages
• Only display reload button for authenticated users
• Button shows spinning animation while refreshing

Demo

https://jam.dev/c/daa7eb4d-63ed-451c-8c3e-329ac933cee8

Test plan

• Verify reload button appears when model list fails to load
• Test that clicking the reload button triggers a refresh
• Confirm button shows spinning animation during refresh
• Verify button only appears for authenticated users
• Test that model list updates correctly after refresh

🤖 Generated with Pochi

[liangfung]

fix #984

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 93 lines in your changes missing coverage. Please review.
✅ Project coverage is 15.24%. Comparing base (934a1d2) to head (309999a).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
...kages/vscode-webui/src/components/model-select.tsx	0.00%	21 Missing ⚠️
...rc/components/__stories__/model-select.stories.tsx	0.00%	17 Missing ⚠️
...kages/vscode-webui/src/lib/hooks/use-model-list.ts	0.00%	16 Missing ⚠️
...scode/src/integrations/webview/vscode-host-impl.ts	0.00%	10 Missing ⚠️
packages/vscode/src/lib/model-list.ts	0.00%	10 Missing ⚠️
...src/features/settings/hooks/use-selected-models.ts	0.00%	8 Missing ⚠️
...ebui/src/features/chat/components/chat-toolbar.tsx	0.00%	4 Missing ⚠️
...src/features/chat/components/create-task-input.tsx	0.00%	4 Missing ⚠️
...ges/common/src/vscode-webui-bridge/webview-stub.ts	0.00%	3 Missing ⚠️

❌ Your patch status has failed because the patch coverage (0.00%) is below the target coverage (75.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1000      +/-   ##
==========================================
- Coverage   15.90%   15.24%   -0.66%     
==========================================
  Files         576      576              
  Lines       52884    52679     -205     
  Branches     1701     1667      -34     
==========================================
- Hits         8411     8031     -380     
- Misses      44236    44409     +173     
- Partials      237      239       +2     

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