escalation
AI Agent Escalation Module for PraisonAI Agents. Provides progressive escalation pipeline for auto-mode execution:- Stage 0: Direct response (no tools, no planning)
- Stage 1: Heuristic tool usage (local signals, no extra LLM call)
- Stage 2: Lightweight plan (single LLM call, constrained)
- Stage 3: Full autonomous loop (tools + subagents + verification)
- All imports are lazy loaded via getattr
- Escalation only triggered when signals indicate need
- No overhead for simple tasks

