v0.14.0

v0.14.0 -- Reliability, Analysis Tools & New APIs

New API Functions

• humanize_sentences() -- per-sentence AI scoring with graduated intensity; only rewrites sentences above a configurable AI probability threshold
• humanize_variants() -- generates 1-10 humanization variants with different random seeds, sorted by quality
• humanize_stream() -- generator that yields humanized text chunk-by-chunk with progress tracking

New Analysis Modules (zero-dependency, offline)

• perplexity_v2 -- character-level trigram cross-entropy model with cross_entropy() and perplexity_score() returning naturalness score (0-100) and verdict
• dict_trainer -- corpus analysis for custom dictionary building with train_from_corpus() and export_custom_dict()
• plagiarism -- offline originality detection via n-gram fingerprinting with check_originality() and compare_originality()

Pipeline Improvements

• Error isolation -- each processing stage wrapped in _safe_stage() with try/except; failing stages are skipped gracefully instead of crashing the pipeline
• Partial rollback -- pipeline records checkpoints after each stage; on validation failure, rolls back stage-by-stage to find the last valid state
• Pipeline profiling -- stage_timings dict and total_time included in metrics_after for performance analysis

Bug Fixes & Code Quality

• Fixed adversarial_calibrate intensity parameter (float 0-1 changed to int 0-100 to match API)
• Added input sanitization: TypeError for non-str, ValueError for >500K chars, early return for empty text
• Thread-safe lazy loading with double-checked locking on all module loaders
• Instance-level plugins preventing cross-instance interference
• Fixed humanize_sentences crash (detect_ai_sentences returns list, not dict)

Tests

• 1,604 tests -- up from 1,560 (44 new tests for all v0.14.0 features)
• 100% pass rate