Rebrand to PluresDB and automate release pipeline

[Copilot]

Updates branding from Gun.js to PluresDB (@plures/pluresdb) and implements automated version detection, changelog generation, and dual publishing (npm + GitHub Packages).

Branding Updates

• Documentation: README, PUBLISHING.md, and examples now reference @plures/pluresdb package
• Code examples: Changed imports from { GunDB } from 'pluresdb' to PluresDB from '@plures/pluresdb'
• Source comments: Updated to emphasize PluresDB while maintaining backward compatibility

// Before
import { GunDB } from 'pluresdb';
const db = new GunDB();

// After  
import PluresDB from '@plures/pluresdb';
const db = new PluresDB();

Automated Release Pipeline

Release Workflow (.github/workflows/release.yml)

• Detects version changes in package.json on push to main
• Generates changelog from git commits since last tag
• Creates GitHub Release with auto-generated notes
• Publishes to npm as unum and GitHub Packages as @plures/unum
• Manual dispatch option with version bump selection (patch/minor/major)

Updated Publish Workflow

• Triggers on GitHub Release publication
• Added GitHub Packages publishing support
• Explicit permissions for security

Documentation

• CHANGELOG.md: Release history tracking
• WORKFLOW_GUIDE.md: Visual workflow diagram and usage patterns
• PUBLISHING.md: Two-method release process (automatic/manual)

Usage

Automatic release on version change:

npm version patch
git push origin main --follow-tags
# Release workflow triggers automatically

Manual dispatch via GitHub Actions UI with version bump selection.

Backward Compatibility

Legacy exports (gun, GunDB, gunComponent) remain available for existing code.

Original prompt

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This section details on the original issue you should resolve

<issue_title>change focus to pluresdb</issue_title>
<issue_description>The latest version of pluresdb will now be published to @plures/pluresdb and also as a github package. Let's update the branding, docs, and code in unum, to focus on pluresdb as opposed to gun.js or gundb. 2. Update the unum ci to enable publishing from the pipeline/workflow automatically; to include, automatic bump-version, changelog.md updates, tagging, releasing, and publishing. </issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes change focus to pluresdb #5

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