feat(changelog): Add AI-powered summaries using GitHub Models API

Add optional AI-powered summarization for changelog sections using GitHub
Models API. Uses your existing GitHub token—no additional API keys required.

Features:
- Summarizes sections with >5 items into concise prose (40-60% compression)
- Uses GPT-4o-mini by default via GitHub Models API
- Configurable model selection (GPT-4o, Llama, etc.)
- Graceful degradation if token unavailable
- Eval tests using vitest-evals for quality validation

Configuration:
  aiSummaries:
    enabled: true
    kickInThreshold: 5
    model: openai/gpt-4o-mini

Author: BYK

README.md

@@ -44,6 +44,35 @@ craft publish 1.2.3
 - **Workspace Support** - Handle monorepos with NPM/Yarn workspaces
 - **CI Integration** - Wait for CI to pass, download artifacts, and publish
 - **GitHub Actions** - Built-in actions for release preparation and changelog previews
+- **AI Summaries** - Optionally summarize verbose changelog sections using GitHub Models API
+
+## AI-Powered Changelog Summaries
+
+Craft can use [GitHub Models](https://github.com/marketplace/models) to summarize changelog sections with many entries into concise descriptions. Uses your existing GitHub token—no additional API keys required.
+
+```yaml
+aiSummaries:
+  enabled: true
+  kickInThreshold: 5  # Only summarize sections with >5 items
+  model: "openai/gpt-4o-mini"  # optional, see available models below
+```
+
+### Authentication
+
+The feature uses your GitHub token automatically:
+- From `GITHUB_TOKEN` environment variable, or
+- From `gh auth token` (GitHub CLI)
+
+### Available Models
+
+You can use any model from [GitHub Marketplace Models](https://github.com/marketplace/models):
+
+```yaml
+aiSummaries:
+  model: "openai/gpt-4o-mini"        # Default, fast and capable
+  model: "openai/gpt-4o"             # More capable, slower
+  model: "meta/meta-llama-3.1-8b-instruct"  # Open source alternative
+```
 
 ## Configuration
 

blog-post-draft.md

@@ -4,7 +4,7 @@ import prettier from 'eslint-config-prettier';
 
 export default tseslint.config(
   {
-    ignores: ['docs/**', 'dist/**', 'node_modules/**', 'coverage/**', '*.mjs', '**/*.js'],
+    ignores: ['docs/**', 'dist/**', 'node_modules/**', 'coverage/**', '**/*.mjs', '**/*.js'],
   },
   eslint.configs.recommended,
   ...tseslint.configs.recommended,

eslint.config.mjs

@@ -12,6 +12,7 @@
   },
   "devDependencies": {
     "@aws-sdk/client-lambda": "^3.723.0",
+    "@eslint/js": "^9.17.0",
     "@google-cloud/storage": "^7.14.0",
     "@octokit/plugin-retry": "^7.1.2",
     "@octokit/request-error": "^7.0.0",
@@ -35,9 +36,6 @@
     "@types/tar": "^4.0.0",
     "@types/tmp": "^0.0.33",
     "@types/yargs": "^17",
-    "@eslint/js": "^9.17.0",
-    "typescript-eslint": "^8.18.2",
-    "zod": "^3.24.1",
     "async": "3.2.2",
     "aws4": "^1.11.0",
     "chalk": "4.1.1",
@@ -52,7 +50,6 @@
     "git-url-parse": "^16.1.0",
     "glob": "^11.0.0",
     "is-ci": "^2.0.0",
-    "vitest": "^3.0.2",
     "js-yaml": "4.1.1",
     "mkdirp": "^1.0.4",
     "mustache": "3.0.1",
@@ -71,7 +68,11 @@
     "tar": "6.2.1",
     "tmp": "0.2.4",
     "typescript": "^5.7.2",
-    "yargs": "^18"
+    "typescript-eslint": "^8.18.2",
+    "vitest": "^3.0.2",
+    "vitest-evals": "^0.5.0",
+    "yargs": "^18",
+    "zod": "^3.24.1"
   },
   "scripts": {
     "build:fat": "tsc -p tsconfig.build.json",
@@ -84,6 +85,7 @@
     "fix": "yarn lint --fix",
     "test": "vitest run",
     "test:watch": "vitest",
+    "test:evals": "vitest run --config vitest.evals.config.ts",
     "docs:dev": "cd docs && yarn dev",
     "docs:build": "cd docs && yarn build"
   },
@@ -92,6 +94,8 @@
     "yarn": "1.22.19"
   },
   "dependencies": {
+    "@github/models": "^0.0.1-beta.2",
+    "ai": "^6.0.3",
     "marked": "^17.0.1"
   }
 }