⚡ Bolt: Cache icon lookups to improve render performance

[sshahriazz]

💡 What: Added a memory cache (Map) to client/src/components/base/IconifyIcon.tsx to memoize the resolution of iconData objects from string identifiers.

🎯 Why: Previously, if an icon was prefix-less (e.g. just home rather than ic:baseline-home), getIconData() iterated over Object.entries(iconSets) (up to 11 dictionaries) on every single render of the component. Dashboard apps routinely render 100s of icons in Sidebars and DataGrids, leading to significant CPU overhead and decreased main thread availability during initial loads and heavy re-renders.

📊 Impact: Reduces redundant lookup array iterations from O(N) to an O(1) dictionary lookup on cache hits, yielding massive improvements to render times for pages heavily utilizing icons.

🔬 Measurement: Render time via React Profiler when loading pages like /account with 50+ sidebar and panel icons should demonstrate decreased component compute time.

Additionally logged this codebase-specific anti-pattern in .jules/bolt.md.

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PR created automatically by Jules for task 6889459595122681135 started by @sshahriazz

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