refactor: remove search_surfsense_docs tool and related references

- Deleted the `search_surfsense_docs` tool and its associated files, streamlining the agent's toolset.
- Updated various components and prompts to remove references to the now-removed tool, ensuring consistency across the codebase.
- Adjusted documentation to direct users to the SurfSense documentation link for product-related queries instead.

surfsense_backend/scripts/seed_surfsense_docs.py

@@ -1,40 +0,0 @@
-#!/usr/bin/env python
-"""
-Seed Surfsense documentation into the database.
-
-CLI wrapper for the seed_surfsense_docs function.
-Can be run manually for debugging or re-indexing.
-
-Usage:
-    python scripts/seed_surfsense_docs.py
-"""
-
-import asyncio
-import sys
-from pathlib import Path
-
-# Add the parent directory to the path so we can import app modules
-sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
-
-from app.tasks.surfsense_docs_indexer import seed_surfsense_docs
-
-
-def main():
-    """CLI entry point for seeding Surfsense docs."""
-    print("=" * 50)
-    print("  Surfsense Documentation Seeding")
-    print("=" * 50)
-
-    created, updated, skipped, deleted = asyncio.run(seed_surfsense_docs())
-
-    print()
-    print("Results:")
-    print(f"  Created: {created}")
-    print(f"  Updated: {updated}")
-    print(f"  Skipped: {skipped}")
-    print(f"  Deleted: {deleted}")
-    print("=" * 50)
-
-
-if __name__ == "__main__":
-    main()