Update README with full architecture and upgrade notes

README.md

@@ -1,3 +1,54 @@
-# odoo-plugin-creation
+# Odoo Plugin Creation
 
-Odoo MCP plugin for Claude Cowork — connects to mpmedia.odoo.com covering Products, Knowledge, Contacts, Sales, CRM, Project, Helpdesk, Purchase, Inventory, and Employees.
+Claude Cowork plugin that connects to MPM's Odoo V18 instance at [mpmedia.odoo.com](https://mpmedia.odoo.com) via the XML-RPC API. No Odoo-side modules required — upgrade safe.
+
+## Modules Covered
+
+| Module | Odoo Model(s) | Tools |
+|--------|--------------|-------|
+| Products | `product.template`, `product.product` | search, get, stock levels |
+| Knowledge | `knowledge.article` | search, get, create, update |
+| Contacts | `res.partner` | search, get, create |
+| Sales | `sale.order` | search, get, create |
+| CRM | `crm.lead` | search, get, create, update, list stages |
+| Project | `project.project`, `project.task` | list, get, search tasks, create/update tasks |
+| Helpdesk | `helpdesk.ticket` | search, get, create, update, list teams |
+| Purchase | `purchase.order` | search, get (with line items) |
+| Inventory | `stock.quant`, `stock.move` | search stock, moves, list locations |
+| Employees | `hr.employee`, `hr.department` | search, get, list departments |
+
+## Architecture
+
+- **Transport**: stdio (local Python process)
+- **API**: Odoo XML-RPC at `/xmlrpc/2/` — no Odoo module needed
+- **Auth**: API key (generated per-user in Odoo profile → Account Security)
+- **Compatible**: Odoo V18 now; V19 JSON/2 API migration path available
+
+## Configuration
+
+Credentials are stored in `.mcp.json` under the `env` block:
+
+```json
+{
+  "ODOO_URL": "https://mpmedia.odoo.com",
+  "ODOO_DB": "mpmedia-odoo-sh-main-13285275",
+  "ODOO_USERNAME": "bgilliom@mpmedia.tv",
+  "ODOO_API_KEY": "your-api-key-here"
+}
+```
+
+To rotate the API key: generate a new one in Odoo (My Profile → Account Security → API Keys), update `.mcp.json`, and rebuild the `.plugin` file.
+
+## Rebuilding the Plugin
+
+After making changes to `server/odoo_mcp.py`, `skills/`, or `.mcp.json`:
+
+```bash
+cd /path/to/odoo-mpm && zip -r odoo-mpm.plugin . -x "*.DS_Store" -x "__pycache__/*" -x "*.pyc" -x ".git/*"
+```
+
+Then reinstall the `.plugin` file in Cowork.
+
+## V19 Upgrade Notes
+
+When upgrading to Odoo V19, the XML-RPC endpoint remains available (removal scheduled for V22). To migrate to the new JSON/2 API, replace the `_connect()` and `_call()` functions in `server/odoo_mcp.py` with HTTP requests to `/json/2/<model>/<method>` using Bearer token auth.