docs: PRD v2.0, IMPLEMENTATION v2.0 — non-technical-first pivot

Complete rewrite of both documents from engineer-first to non-technical-first:

Architecture changed:
- Desktop app (Tauri + Monaco) → Web app (React + Node.js)
- Local Docker runtime → Cloud-hosted sandboxes (Wursor-hosted, VPS)
- Code editor + terminal + diff panels → Chat interface + live preview + approve/reject
- Tools for engineers (fs, git, wp-cli) → Playbooks for everyone (content, design, plugins)
- BYO API key → Wursor-hosted model (Grok)

Product changed:
- Primary user: WordPress engineer → WordPress site owner (non-technical)
- Interface: code editor with panels → single chat input + live preview
- Safety model: permission tiers + file diffs → cloud sandbox + approve/reject
- Deploy: Git-based → plugin-based with one-click rollback
- Competitive frame: dev tools → WP management layer

Key new sections:
- Cloud sandbox orchestration with warm pool, mirroring, lazy media sync
- WordPress plugin connector (REST API, deploy receiver, rollback)
- Deploy mechanism (diff engine, pusher, verifier, rollback)
- New playbook system (content, design, plugin, site build)
- Error states for the web app + plugin paradigm
- Non-technical personas, principles, and UX

README.md

@@ -1,14 +1,25 @@
 # Wursor
 
-**Working title.** Agentic WordPress development environment — code, live site, WP-CLI, and shipping in one loop.
+**The Agentic WordPress Management Platform**
 
-> This repository previously contained **Originmain** (AI design-engineering canvas). That codebase was removed in the product pivot of August 2026.
+Just describe what you want. Wursor does the rest.
+
+> This repository previously contained **Originmain** (AI design-engineering canvas) and then pivoted to **Wursor** (engineer-first WordPress desktop tool). The current version is **Wursor v2** — a web-based platform for non-technical WordPress site owners.
 
 ## Start here
 
 - Full product spec: [PRD.md](./PRD.md)
 - Build guide (TDD, sprints, CI): [IMPLEMENTATION.md](./IMPLEMENTATION.md)
 
+## What it does
+
+1. Connect your WordPress site (one-click plugin install)
+2. Describe what you want to change — "make my homepage look more modern" or "add a contact form"
+3. Wursor spins up a safe copy of your site, makes the changes, and shows you a live preview
+4. Like it? Click approve. Don't like it? Click reject — your site is untouched.
+
+No code. No terminals. No wp-admin.
+
 ## Status
 
 Spec / Phase 0. Implementation has not started.