v0.3: fix all issues — calibration table format, contradiction pointers, abbreviation splitting, dead code removal, version bump, unified constants, updated deps\n\nBug fixes:\n- #1: Calibration probes now use table format matching actual verifier\n- #2: CONTRADICTS_EVIDENCE claims now get evidence pointers from parser\n- #3: Removed dead has_llm_contra variable in pipeline_runner\n\nImprovements:\n- #4: Abbreviation-aware sentence splitting (Dr., U.S., Inc.)\n- #5: .env.example documents hf_api mode + all env vars\n- #6: Version strings updated to v0.3 across all files\n- #7: huggingface-hub added to pyproject.toml optional deps\n- #8: Unified STOP_WORDS into shared src/constants.py\n- Mock LLM client updated to return table format\n- 125 tests pass (was 104)