docs: format root README to match plugin (TOC, tables, structure)

docs: format README with TOC, tables, and clearer structure

Revise README for improved clarity and structure

Enhance README with comprehensive plugin documentation

chore: remove patch notes (not required for plugin)

chore: remove patch notes (not required for plugin)

docs: add TODO for image generation; remove unrequired files

docs: README – ZIP install steps and in-depth how-to use

Add includes core: plugin, admin, cron, db

Add image service and LLM provider

Add content pipeline service

Fix docs and prompts (full content)

Add docs, prompts, and tests

Add REST controllers and services (model-discovery, auth, SEO)

Add core plugin, admin, cron, and jobs table