Improve query-decomposer script: error handling, deduplication, JSON …

[Mohaneswari-Pugazenthi]

This pull request significantly improves the query-decomposer/test/run.ts script, transforming it into a resilient and dynamic utility for executing query decomposition workflows. Key enhancements include:

Core Fixes & Improvements

• Graceful Error Handling: Wrapped all subquery search calls in try/catch blocks to prevent crashes from API failures or malformed responses.
• Missing Data Protection: Ensures that empty or undefined fields (e.g. title, URL, snippet) are handled safely before printing or saving.
• Result Deduplication: Integrated a deduplication step to eliminate redundant search results across subqueries.

Output Enhancements

• Full Result Display: Each result now prints title, URL, and snippet clearly to the console.
• JSON Export: Final results are saved to results.json for downstream use or inspection.

Technical Corrections

• Module Import Paths: Fixed broken or misaligned import paths to ensure compatibility across environments.
• TypeScript Typings: Added and corrected typings, including support for lodash, to eliminate compile-time errors and improve code clarity.

Dynamic Execution

• The script now supports any input query, decomposes it into meaningful subqueries, performs parallel searches, and outputs clean, deduplicated results—making it a reliable tool for testing and validating the query decomposition engine.

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