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>

addons/base/models/res_users.go

@@ -0,0 +1,101 @@
+package models
+
+import "odoo-go/pkg/orm"
+
+// initResUsers registers the res.users model.
+// Mirrors: odoo/addons/base/models/res_users.py class Users
+//
+// In Odoo, res.users inherits from res.partner via _inherits.
+// Every user has a linked partner record for contact info.
+func initResUsers() {
+	m := orm.NewModel("res.users", orm.ModelOpts{
+		Description: "Users",
+		Order:       "login",
+	})
+
+	// -- Authentication --
+	m.AddFields(
+		orm.Char("login", orm.FieldOpts{String: "Login", Required: true, Index: true}),
+		orm.Char("password", orm.FieldOpts{String: "Password"}),
+		orm.Boolean("active", orm.FieldOpts{String: "Active", Default: true}),
+	)
+
+	// -- Partner link (Odoo: _inherits = {'res.partner': 'partner_id'}) --
+	m.AddFields(
+		orm.Many2one("partner_id", "res.partner", orm.FieldOpts{
+			String: "Related Partner", Required: true, OnDelete: orm.OnDeleteRestrict,
+		}),
+		orm.Char("name", orm.FieldOpts{String: "Name", Related: "partner_id.name"}),
+		orm.Char("email", orm.FieldOpts{String: "Email", Related: "partner_id.email"}),
+	)
+
+	// -- Company --
+	m.AddFields(
+		orm.Many2one("company_id", "res.company", orm.FieldOpts{
+			String: "Company", Required: true, Index: true,
+		}),
+		orm.Many2many("company_ids", "res.company", orm.FieldOpts{String: "Allowed Companies"}),
+	)
+
+	// -- Groups / Permissions --
+	m.AddFields(
+		orm.Many2many("groups_id", "res.groups", orm.FieldOpts{String: "Groups"}),
+	)
+
+	// -- Preferences --
+	m.AddFields(
+		orm.Char("lang", orm.FieldOpts{String: "Language", Default: "en_US"}),
+		orm.Char("tz", orm.FieldOpts{String: "Timezone", Default: "UTC"}),
+		orm.Selection("notification_type", []orm.SelectionItem{
+			{Value: "email", Label: "Handle by Emails"},
+			{Value: "inbox", Label: "Handle in Odoo"},
+		}, orm.FieldOpts{String: "Notification", Default: "email"}),
+		orm.Binary("image_1920", orm.FieldOpts{String: "Avatar"}),
+		orm.Char("signature", orm.FieldOpts{String: "Email Signature"}),
+	)
+
+	// -- Status --
+	m.AddFields(
+		orm.Boolean("share", orm.FieldOpts{
+			String: "Share User", Compute: "_compute_share", Store: true,
+			Help: "External user with limited access (portal/public)",
+		}),
+	)
+}
+
+// initResGroups registers the res.groups model.
+// Mirrors: odoo/addons/base/models/res_users.py class Groups
+//
+// Groups define permission sets. Users belong to groups.
+// Groups can imply other groups (hierarchy).
+func initResGroups() {
+	m := orm.NewModel("res.groups", orm.ModelOpts{
+		Description: "Access Groups",
+		Order:       "name",
+	})
+
+	m.AddFields(
+		orm.Char("name", orm.FieldOpts{String: "Name", Required: true, Translate: true}),
+		orm.Text("comment", orm.FieldOpts{String: "Comment"}),
+		orm.Many2one("category_id", "ir.module.category", orm.FieldOpts{String: "Application"}),
+		orm.Char("color", orm.FieldOpts{String: "Color Index"}),
+		orm.Char("full_name", orm.FieldOpts{String: "Group Name", Compute: "_compute_full_name"}),
+		orm.Boolean("share", orm.FieldOpts{String: "Share Group", Default: false}),
+	)
+
+	// -- Relationships --
+	m.AddFields(
+		orm.Many2many("users", "res.users", orm.FieldOpts{String: "Users"}),
+		orm.Many2many("implied_ids", "res.groups", orm.FieldOpts{
+			String: "Inherits",
+			Help:   "Users of this group automatically inherit those groups",
+		}),
+	)
+
+	// -- Access Control --
+	m.AddFields(
+		orm.One2many("model_access", "ir.model.access", "group_id", orm.FieldOpts{String: "Access Controls"}),
+		orm.One2many("rule_groups", "ir.rule", "group_id", orm.FieldOpts{String: "Rules"}),
+		orm.Many2many("menu_access", "ir.ui.menu", orm.FieldOpts{String: "Access Menu"}),
+	)
+}