chore(release): cut v1.4.0

Bumps pyproject [project] version, src/skillcheck/__init__.__version__,
and the self-host SKILL.md frontmatter version to 1.4.0. Moves the
accumulated [Unreleased] block under [1.4.0] - 2026-05-27.

This release consolidates: shipping drift fixes (empty action/ dir,
CLI --format error message), pre-commit and action install paths,
description scorer coverage (-ing/-ed inflection, seamless/empowering
vague words), references extractor sharing the backtick helper with
the capability graph and scanning <a href> tags, configurable
reserved_words in skillcheck.toml, published JSON Schemas for the
agent IO contracts, agent prompt scaffolding snapshot tests,
--history fan-out across multiple paths, table-driven mutual-exclusion
checks, a threading lock on the tokenizer cache, documentation polish,
the release-notes promotion workflow, and SLSA build provenance on
tagged releases. Full detail in CHANGELOG.md.

Author: Brad Kinnard

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.4.0] - 2026-05-27
+
 ### Changed
 
 - README exit-codes table expanded: the `1` row now lists every escalation path (errors, warning-only run with `--strict`, regression with `--fail-on-regression`, ingest parse failure) and includes the `1` > `3` priority note that was previously only in `.github/CLAUDE.md`.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "skillcheck"
-version = "1.3.0"
+version = "1.4.0"
 description = "Cross-agent skill quality gate for SKILL.md files conforming to the agentskills.io specification"
 readme = "README.md"
 license = { text = "MIT" }

skills/skillcheck/SKILL.md

@@ -1,7 +1,7 @@
 ---
 name: skillcheck
 description: Validates and scores SKILL.md files against the agentskills.io specification; use when linting skills for cross-agent compatibility, description quality, or capability graph structure.
-version: "1.3.0"
+version: "1.4.0"
 author: "Brad Kinnard (moonrunnerkc), Aftermath Technologies Ltd"
 ---
 

src/skillcheck/__init__.py

@@ -2,7 +2,7 @@
 from skillcheck.parser import ParsedSkill, ParseError
 from skillcheck.result import Diagnostic, Severity, ValidationResult
 
-__version__ = "1.3.0"
+__version__ = "1.4.0"
 
 __all__ = [
     "validate",