Compliance fix: Ensure task scores are strictly between 0 and 1

Update README with Meta x Scaler Hackathon branding

Fix Hugging Face Space configuration metadata

Fix Phase 2 dependency issue and upgrade to Selection-Grade AI Triage system

Configure multi-mode deployment and submission readiness for hackathon

refactor: restructure project for multi-mode validation

build: configure multi-mode deployment and fix HF Space build errors

Add pyproject.toml for HF Space compliance

implement OpenEnv-compliant email triage environment with tasks, Pydantic models, inference pipeline, Dockerfile, and Hugging Face Space deployment