v0.25.0

What's Changed

Bug Fixes

• CRITICAL: Fixed naturalizer.py regex crash for RU/UK text (~50 patterns with non-capturing groups + backreferences). The entire naturalization stage was silently skipped.
• Added thread-safety locks to _ai_cache and _AI_WORDS for multi-threaded usage.
• Added division-by-zero guards in detector metric calculations.

Cleanup

• Removed dead module tokenizer.py (replaced by sentence_split.py).
• Removed 14 one-off diagnostic scripts, 4 outdated competitive analysis docs, debug artifacts.
• Synced PHP and JS package versions to 0.25.0.

Documentation

• Fixed 17-stage to 20-stage across all 15+ documentation files.
• Corrected test counts, LOC claims, speed benchmarks for consistency.
• Fixed CHANGELOG date chronology.

CI

• Raised per-test timeout from 120s to 300s to prevent false failures on slow CI runners.