chore(versioning): switch to standard-version for automated changelog generation

This change implements standard-version for versioning and changelog management:
- Adds standard-version as a dev dependency
- Updates package.json scripts to use standard-version
- Creates .versionrc.json configuration file
- Updates CHANGELOG.md with instructions for conventional commits
- Removes obsolete manual changelog update script

.versionrc.json

@@ -0,0 +1,22 @@
+{
+  "types": [
+    {"type": "feat", "section": "Added", "hidden": false},
+    {"type": "fix", "section": "Fixed", "hidden": false},
+    {"type": "chore", "section": "Changed", "hidden": false},
+    {"type": "docs", "section": "Documentation", "hidden": false},
+    {"type": "style", "section": "Changed", "hidden": true},
+    {"type": "refactor", "section": "Changed", "hidden": false},
+    {"type": "perf", "section": "Changed", "hidden": false},
+    {"type": "test", "section": "Tests", "hidden": true},
+    {"type": "build", "section": "Build System", "hidden": true},
+    {"type": "ci", "section": "Continuous Integration", "hidden": true}
+  ],
+  "releaseCommitMessageFormat": "chore(release): {{currentTag}} [skip ci]",
+  "commitUrlFormat": "https://github.com/soulcraft-research/brainy/commit/{{hash}}",
+  "compareUrlFormat": "https://github.com/soulcraft-research/brainy/compare/{{previousTag}}...{{currentTag}}",
+  "issueUrlFormat": "https://github.com/soulcraft-research/brainy/issues/{{id}}",
+  "userUrlFormat": "https://github.com/{{user}}",
+  "skip": {
+    "tag": false
+  }
+}

CHANGELOG.md

@@ -59,22 +59,46 @@ For detailed implementation notes and technical summaries of previous versions,
 
 ## How to Update This Changelog
 
-When making changes to the project:
+This project now uses [standard-version](https://github.com/conventional-changelog/standard-version) to automatically generate the changelog from commit messages.
 
-1. Add new entries under `[Unreleased]` section
-2. Use the following categories:
-   - `Added` for new features
-   - `Changed` for changes in existing functionality
-   - `Deprecated` for soon-to-be removed features
-   - `Removed` for now removed features
-   - `Fixed` for any bug fixes
-   - `Security` for vulnerability fixes
+### Commit Message Format
 
-3. When releasing a new version:
-   - Move unreleased changes to a new version section
-   - Update the version number and date
-   - Create a new empty `[Unreleased]` section
+Follow the [Conventional Commits](https://www.conventionalcommits.org/) specification for your commit messages:
 
-4. Link to GitHub releases: `[0.26.0] - 2025-07-28` format
-5. Keep entries concise but informative for users
-6. Include technical details in a separate subsection if needed
+```
+<type>(<scope>): <description>
+
+[optional body]
+
+[optional footer(s)]
+```
+
+Where `<type>` is one of:
+- `feat`: A new feature (maps to **Added** section)
+- `fix`: A bug fix (maps to **Fixed** section)
+- `chore`: Regular maintenance tasks (maps to **Changed** section)
+- `docs`: Documentation changes (maps to **Documentation** section)
+- `refactor`: Code changes that neither fix bugs nor add features (maps to **Changed** section)
+- `perf`: Performance improvements (maps to **Changed** section)
+
+### Examples:
+
+```
+feat(storage): add new file system adapter
+fix(hnsw): resolve index corruption on large datasets
+docs(readme): update installation instructions
+refactor(core): simplify graph traversal algorithm
+```
+
+### Releasing a New Version
+
+To release a new version:
+1. Ensure all changes are committed
+2. Run one of:
+   - `npm run release` (for patch version)
+   - `npm run release:patch` (same as above)
+   - `npm run release:minor` (for minor version)
+   - `npm run release:major` (for major version)
+3. Push changes with tags: `git push --follow-tags origin main`
+
+The changelog will be automatically updated based on your commit messages.

package.json

@@ -54,19 +54,19 @@
     "build:browser": "BUILD_TYPE=browser rollup -c rollup.config.js",
     "start": "node dist/unified.js",
     "demo": "npm run build && npm run build:browser && npx http-server -o /demo/index.html",
-    "version": "echo 'Version updated in package.json'",
-    "version:patch": "npm version patch && node scripts/update-changelog.js",
-    "version:minor": "npm version minor && node scripts/update-changelog.js",
-    "version:major": "npm version major && node scripts/update-changelog.js",
-    "changelog:update": "node scripts/update-changelog.js",
-    "changelog:check": "echo 'Please ensure CHANGELOG.md [Unreleased] section has your changes before releasing'",
+    "release": "standard-version",
+    "release:patch": "standard-version --release-as patch",
+    "release:minor": "standard-version --release-as minor",
+    "release:major": "standard-version --release-as major",
+    "release:dry-run": "standard-version --dry-run",
+    "changelog:check": "echo 'Changelog is now automatically generated from commit messages'",
     "lint": "eslint --ext .ts,.js src/",
     "lint:fix": "eslint --ext .ts,.js src/ --fix",
     "format": "prettier --write \"src/**/*.{ts,js}\"",
     "check:format": "prettier --check \"src/**/*.{ts,js}\"",
     "check:style": "node scripts/check-code-style.js",
     "prepare": "npm run build",
-    "deploy": "npm run build && npm publish && node scripts/create-github-release.js",
+    "deploy": "npm run build && npm run release && npm publish && node scripts/create-github-release.js",
     "dry-run": "npm pack --dry-run",
     "test": "vitest run",
     "test:watch": "vitest",
@@ -148,6 +148,7 @@
     "puppeteer": "^22.5.0",
     "rollup": "^4.13.0",
     "rollup-plugin-terser": "^7.0.2",
+    "standard-version": "^9.5.0",
     "tslib": "^2.6.2",
     "typescript": "^5.4.5",
     "vitest": "^3.2.4"