[WIP] fix @posva/pinia-colada/issues/258

[Copilot]

• Analyze issue useInfiniteQuery: changing the key should create a new cache entry #258: useInfiniteQuery key changes don't create isolated cache entries
• Understand the root cause: global pages variable is shared across all cache entries
• Review existing codebase and infinite query implementation
• Create test that reproduces the issue - confirmed the bug exists
• Fix the implementation to use per-cache-entry pages data
• Verify the fix with tests
• Ensure no regressions in existing functionality

Summary

Successfully fixed the critical bug in useInfiniteQuery where changing keys would not create isolated cache entries, causing data pollution between different query parameters.

Root Cause

The global pages variable in infinite-query.ts was shared across all cache entries, causing accumulated data from one key to pollute subsequent keys.

Solution

• Removed the problematic global pages variable
• Used queryCache.getQueryData() to retrieve current cached data for each specific key
• Ensured each cache entry maintains its own isolated pages data

Testing

Added comprehensive test coverage:

1. Key isolation test: Verifies different keys create separate cache entries
2. Concurrent queries test: Ensures multiple infinite queries don't interfere
3. Cache restoration test: Confirms cached data is properly restored when switching keys
4. Regression testing: All existing tests pass

Impact

• ✅ Keys now properly create isolated cache entries
• ✅ Cache restoration works correctly when switching between keys
• ✅ Multiple concurrent infinite queries operate independently
• ✅ No breaking changes to existing API
• ✅ Resolves issue useInfiniteQuery: changing the key should create a new cache entry #258 completely

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