Fix critical bugs: compensation for late orders, escalation detection, conversation history improvements

Fix contradictory logic: Conditional tone based on delivery timing, frustration threshold 0.5, celebrate early deliveries

Add scope validation and system capabilities: Handle meta queries and reject out-of-scope questions

Fix bugs #2 and #3: Add database and vectorstore with Git LFS, update start.sh with build fallbacks

Fix: All 7 critical bugs + 4 security enhancements + compensation policy

Initial commit: Olist intelligence layer with database