fix(tui): preserve picker selection after detail views

[aidandaly24]

Summary

• preserve the selected row when any PaginatedTablePicker opens a detail screen and the user returns with Escape
• store the selected row's stable value in that list's history entry and restore it when the picker remounts
• keep the behavior inside the shared picker instead of adding resource-specific navigation state
• retain existing pagination, resize, transition, and filtering reset behavior

Fixes #1976

Testing

• shared Harness list/detail regression for restoring the third selected row
• Memory Event list/JSON regression for restoring the third selected Event
• bun test src/components/PaginatedTablePicker.test.tsx src/components/ui/data-table/DataTable.test.tsx src/handlers/memory (92 pass)
• bun test --coverage --coverage-reporter=lcov
• bun run typecheck
• bun run lint:check
• bun run format:check
• TUI harness at 100x28, independently confirming third-row restoration in both Memory Event and Harness list flows

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.78%. Comparing base (531d068) to head (c57c589).
⚠️ Report is 7 commits behind head on refactor.

Additional details and impacted files

@@            Coverage Diff            @@
##           refactor    #1977   +/-   ##
=========================================
  Coverage     96.78%   96.78%           
=========================================
  Files           326      326           
  Lines         18061    18091   +30     
=========================================
+ Hits          17480    17510   +30     
  Misses          581      581           

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[jariy17]

This is fine but how is having events the first item a better customer experience.