docs(changelog): release 0.1.0

Initial release with metrics, validators, pytest plugin, benchmark
module, CLI, and comprehensive documentation.

changelog.md

@@ -5,37 +5,56 @@ All notable changes to Veritext will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [0.1.0] — 2026-02-03
+
+Initial release of Veritext, a semantic text validation framework for Python.
 
 ### Added
 
+#### Core
+
 - Project scaffold with pyproject.toml and development tooling
 - Core exception hierarchy (`VeritextError` and subclasses)
 - Core types: `ValidationContext`, `CheckResult`, `ValidationResult`
 - Word tokeniser with Unicode normalisation support
 - Configuration module with pydantic-settings
 - Structured logging with structlog
+
+#### Metrics
+
 - Metrics module with `Metric` protocol, `AggregateStats`, and `BatchResult` types
 - BLEU metric implementation (BLEU-1 through BLEU-4 with brevity penalty)
-- Lexical similarity metric (Jaccard similarity and token overlap)
 - ROUGE metric (ROUGE-1, ROUGE-2, ROUGE-L with precision/recall/F-measure)
+- Lexical similarity metric (Jaccard similarity and token overlap)
 - Flesch-Kincaid readability metrics (grade level and reading ease)
 - Batch scoring with aggregate statistics for all metrics
+
+#### Validators
+
 - Validators module with `Check` protocol for validation checks
 - Metric-based validators: `BleuValidator`, `RougeValidator`, `LexicalValidator`
 - Constraint validators: `LengthValidator`, `ReadabilityValidator`, `ContainsValidator`, `ExcludesValidator`
 - Composite validators: `AllOf` (all checks must pass), `AnyOf` (any check must pass)
 - Factory functions for clean validator API (`bleu()`, `rouge()`, `lexical()`, `length()`, `readability()`, `contains()`, `excludes()`, `all_of()`, `any_of()`)
+
+#### Semantic Similarity
+
 - Semantic similarity module with embedding-based text comparison (requires `veritext[semantic]` extra)
 - `SemanticSimilarity` metric using sentence-transformers for semantic relatedness
 - `SemanticValidator` for threshold-based semantic similarity validation
 - `semantic()` factory function for creating semantic validators
 - Embedding caching for performance optimisation in repeated comparisons
+
+#### Pytest Plugin
+
 - Native pytest plugin for CI/CD integration (entry point: `pytest11`)
 - `validate_text()` assertion function for expressive test assertions
 - `text_validation` marker for filtering validation tests
 - Pytest fixtures: `text_validator` factory and `validation_context` helper
 - Detailed failure messages with text preview and check diagnostics
+
+#### Benchmarking
+
 - Benchmark module for quality tracking and regression detection
 - `Benchmark` class for evaluating text quality over time with metric storage
 - `BenchmarkRun` and `RegressionReport` data models for tracking runs
@@ -45,6 +64,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `assert_no_regression()` raises `RegressionDetectedError` for CI integration
 - Customisable tolerance threshold and window size for regression detection
 - Metadata support for tracking git SHA, model versions, etc.
+
+#### CLI
+
 - Command-line interface (CLI) via `veritext` command
 - `veritext validate` command for inline and file-based text validation
 - JSONL input format support for batch validation (`--file` option)
@@ -54,3 +76,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `veritext benchmark show` command for viewing benchmark history
 - `veritext benchmark check` command for regression detection with exit code 1 on failure
 - Rich-formatted terminal output with tables and coloured panels
+
+#### Documentation
+
+- Comprehensive readme with usage examples
+- Example scripts: basic validation, chatbot testing, benchmark regression