Odoo ERP ported to Go — complete backend + original OWL frontend

Full port of Odoo's ERP system from Python to Go, with the original
Odoo JavaScript frontend (OWL framework) running against the Go server.

Backend (10,691 LoC Go):
- Custom ORM: CRUD, domains→SQL with JOINs, computed fields, sequences
- 93 models across 14 modules (base, account, sale, stock, purchase, hr,
  project, crm, fleet, product, l10n_de, google_address/translate/calendar)
- Auth with bcrypt + session cookies
- Setup wizard (company, SKR03 chart, admin, demo data)
- Double-entry bookkeeping constraint
- Sale→Invoice workflow (confirm SO → generate invoice → post)
- SKR03 chart of accounts (110 accounts) + German taxes (USt/VSt)
- Record rules (multi-company filter)
- Google integrations as opt-in modules (Maps, Translate, Calendar)

Frontend:
- Odoo's original OWL webclient (503 JS modules, 378 XML templates)
- JS transpiled via Odoo's js_transpiler (ES modules → odoo.define)
- SCSS compiled to CSS (675KB) via dart-sass
- XML templates compiled to registerTemplate() JS calls
- Static file serving from Odoo source addons
- Login page, session management, menu navigation
- Contacts list view renders with real data from PostgreSQL

Infrastructure:
- 14MB single binary (CGO_ENABLED=0)
- Docker Compose (Go server + PostgreSQL 16)
- Zero phone-home (no outbound calls to odoo.com)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,39 @@
+services:
+  odoo:
+    build: .
+    container_name: odoo-go
+    depends_on:
+      db:
+        condition: service_healthy
+    ports:
+      - "8069:8069"
+    environment:
+      HOST: db
+      USER: odoo
+      PASSWORD: odoo
+      ODOO_DB_NAME: odoo
+      ODOO_ADDONS_PATH: /opt/odoo-src/addons,/opt/odoo-src/odoo/addons
+      ODOO_BUILD_DIR: /opt/build/js
+    volumes:
+      - ../odoo:/opt/odoo-src:ro
+      - ./build/js:/opt/build/js:ro
+    restart: unless-stopped
+
+  db:
+    image: postgres:16-alpine
+    container_name: odoo-go-db
+    environment:
+      POSTGRES_USER: odoo
+      POSTGRES_PASSWORD: odoo
+      POSTGRES_DB: odoo
+    volumes:
+      - db-data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U odoo -d odoo"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+
+volumes:
+  db-data: