[AI] Simplify the number of tools

[rmolinamir]

The tools of our Journl agent currently have a few redundancies. For example:

It's a thoughtful question! Here’s a breakdown of potential redundancies and improvements:

1. Semantic Searches: Both semanticJournalSearch and semanticPageSearch serve similar purposes but for different contexts.
   • Improvement: A unified search tool that can handle both journal and page contexts could streamline the process.
2. Navigation Tools: navigateJournalEntry and navigatePage are distinct but could be combined into a single navigation tool that intelligently determines the context based on user input.
   • Improvement: A context-aware navigation tool that can switch between journal entries and pages based on keywords or phrases.

These changes could make the tools more cohesive and user-friendly, ultimately improving the overall functionality.