v0.2.0 - Full GNU diff Parity

Changes in v0.2.0

• Normal diff default: POSIX/ed-style normal diff output by default (c, a, d hunk blocks), with --normal flag supported.
• Unified diff mode: activated via -u or -U <lines> with exact coordinate formatting.
• Normalization flags:
  • -i, --ignore-case: case-insensitive line comparison.
  • -w, --ignore-all-space: ignore all whitespace characters.
  • -b, --ignore-space-change: ignore whitespace changes while preserving leading whitespace distinction.
  • -B, --ignore-blank-lines: suppress changes whose lines are all blank.
• Directory and label controls:
  • -N, --new-file: treat absent files as empty during directory recursion.
  • -s, --report-identical-files: report when compared files are identical.
  • -L, --label <LABEL>: custom label substitution in diff headers.
  • Recursive diff headers matching GNU diff -r.
• MCP stdio server: Model Context Protocol stdio surface updated to v0.2.0.
• Verification: 100% compliance with openOODA House Laws, passes all parity tests byte-for-byte against GNU diff.