chore: force rebuild on DEV HF Space (v1.1)

V5.11.3 - EMERGENCY SECURITY FIX: Disable local credential files and purge secrets

V280.0: Robust Math Validation Fixes & Model Lockdown (RCE Protection, Multiline Regex, Soft Fail)

fix: Split-Brain resolved - DEV config now points to buddy-math-dev project

debug: Add detailed environment logging to config.py

fix: Auto-detect DEV environment using Hugging Face SPACE_ID

feat: Implementation of DEV auth bypass with strict guardrails

Fix: Clean production deployment with sse-starlette