Optimize CLI log copy buffer

[newmattock]

Summary

• Memoize the raw copy payload in CliLogsBox so large daemon/swap log strings are only rebuilt when the filtered log list changes.
• Normalize the search query once per filter pass instead of once per log row.

Why

This targets the UI performance bounty in #727. The log viewer can hold large daemon/session logs; previously every render, including each search input state update, rebuilt the full logsToRawString(...) copy value. Keeping that derivation memoized avoids redundant string work while preserving the existing filtered-copy behavior.

Testing

• corepack yarn eslint src/renderer/components/other/RenderedCliLog.tsx --quiet
• PATH="$HOME/.cargo/bin:$PATH" corepack yarn gen-bindings
• corepack yarn tsc

If this is accepted for the bounty, I can provide the payout address requested by the maintainer.

Fixes part of #727

[Einliterflasche]

Per our AI policy we require all communication to be exclusively human written. Until this requirement is met, we can't spare the effort to review this.