Update agent/nodes.py

Update agent/nodes.py

Update agent/nodes.py

Major upgrades: Enhanced web search + multimodal video analysis

Enhanced LLM-first architecture with smart attachment handling

Fix: Moved app.py to the root directory and updated README.md

Fix: In app.py added some code that recognizes the sys path and updates it so this will run on HF

Fix: Converted one relative import in agent.py that hadnt been updated

Fix: Converted all relatives imports within agent to refelect agent

Fix: app.py added .utils import functions

Fix: app.py changed tokenclear to token

Fix: app.py removed a period before config in import

Fix: app.py extra apostrophe

Fix: Import attachments

Refactor: Add AnswerRefinementNode and WebSearchNode, fix initial setup and duckduckgo-search import. Prepare for further debugging.

Initial clean commit of GAIA agent project (no secrets or large files, .env explicitly ignored)