Performance: Cache Aho-Corasick trie to reduce initialization time

[master-wayne7]

Building the trie for large datasets (~55K words) can take noticeable time during initialization.

Goal:

• Cache the constructed trie locally
• Reload it on app restart instead of rebuilding

Possible Approaches:

• Serialize trie to local storage
• Use binary encoding or JSON
• Cache in memory (if applicable)

Expected Outcome:

• Faster startup time
• Init method should complete in milliseconds after first run

This will significantly improve user experience.