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>

pkg/modules/graph.go

@@ -0,0 +1,112 @@
+package modules
+
+import (
+	"fmt"
+	"odoo-go/pkg/orm"
+)
+
+// ResolveDependencies returns modules in topological order (dependencies first).
+// Mirrors: odoo/modules/module_graph.py Graph.add_modules()
+//
+// Uses Kahn's algorithm for topological sort.
+func ResolveDependencies(moduleNames []string) ([]string, error) {
+	// Build adjacency list and in-degree map
+	inDegree := make(map[string]int)
+	dependents := make(map[string][]string) // module → modules that depend on it
+
+	// Initialize all requested modules
+	for _, name := range moduleNames {
+		if _, exists := inDegree[name]; !exists {
+			inDegree[name] = 0
+		}
+	}
+
+	// Build graph from dependencies
+	for _, name := range moduleNames {
+		m := Get(name)
+		if m == nil {
+			return nil, fmt.Errorf("modules: %q not found", name)
+		}
+		for _, dep := range m.Depends {
+			// Ensure dependency is in our set
+			if _, exists := inDegree[dep]; !exists {
+				inDegree[dep] = 0
+			}
+			inDegree[name]++
+			dependents[dep] = append(dependents[dep], name)
+		}
+	}
+
+	// Kahn's algorithm
+	var queue []string
+	for name, degree := range inDegree {
+		if degree == 0 {
+			queue = append(queue, name)
+		}
+	}
+
+	var sorted []string
+	for len(queue) > 0 {
+		// Pop first element
+		current := queue[0]
+		queue = queue[1:]
+		sorted = append(sorted, current)
+
+		// Reduce in-degree for dependents
+		for _, dep := range dependents[current] {
+			inDegree[dep]--
+			if inDegree[dep] == 0 {
+				queue = append(queue, dep)
+			}
+		}
+	}
+
+	// Check for circular dependencies
+	if len(sorted) != len(inDegree) {
+		var circular []string
+		for name, degree := range inDegree {
+			if degree > 0 {
+				circular = append(circular, name)
+			}
+		}
+		return nil, fmt.Errorf("modules: circular dependency detected among: %v", circular)
+	}
+
+	return sorted, nil
+}
+
+// LoadModules initializes all modules in dependency order.
+// Mirrors: odoo/modules/loading.py load_modules()
+func LoadModules(moduleNames []string) error {
+	sorted, err := ResolveDependencies(moduleNames)
+	if err != nil {
+		return err
+	}
+
+	// Phase 1: Call Init() for each module (registers models and fields)
+	for _, name := range sorted {
+		m := Get(name)
+		if m == nil {
+			continue
+		}
+		if m.Init != nil {
+			m.Init()
+		}
+	}
+
+	// Phase 2: Call PostInit() after all models are registered
+	for _, name := range sorted {
+		m := Get(name)
+		if m == nil {
+			continue
+		}
+		if m.PostInit != nil {
+			m.PostInit()
+		}
+	}
+
+	// Phase 3: Build computed field dependency maps
+	orm.SetupAllComputes()
+
+	return nil
+}

pkg/modules/module.go

@@ -0,0 +1,76 @@
+// Package modules implements Odoo's module system.
+// Mirrors: odoo/modules/module.py, odoo/modules/loading.py
+package modules
+
+import (
+	"fmt"
+	"sync"
+)
+
+// Module represents an Odoo addon module.
+// Mirrors: ir.module.module + __manifest__.py
+type Module struct {
+	Name         string   // Technical name (e.g., "base", "account", "sale")
+	Description  string   // Human-readable description
+	Version      string   // Module version
+	Category     string   // Module category
+	Depends      []string // Required modules (dependency list)
+	AutoInstall  bool     // Auto-install when all depends are installed
+	Application  bool     // Show in app list
+	Installable  bool     // Can be installed
+	Sequence     int      // Loading order
+
+	// Init function registers models, fields, and methods.
+	// Called during module loading in dependency order.
+	Init func()
+
+	// PostInit is called after all modules are loaded.
+	PostInit func()
+
+	// Data files to load (SQL seed data, etc.)
+	Data []string
+}
+
+// ModuleRegistry holds all registered modules.
+// Mirrors: odoo/modules/module.py loaded modules
+var ModuleRegistry = &moduleRegistry{
+	modules: make(map[string]*Module),
+}
+
+type moduleRegistry struct {
+	mu      sync.RWMutex
+	modules map[string]*Module
+	order   []string // Registration order
+}
+
+// Register adds a module to the registry.
+func Register(m *Module) {
+	ModuleRegistry.mu.Lock()
+	defer ModuleRegistry.mu.Unlock()
+
+	if m.Name == "" {
+		panic("modules: module name is required")
+	}
+	if _, exists := ModuleRegistry.modules[m.Name]; exists {
+		panic(fmt.Sprintf("modules: module %q already registered", m.Name))
+	}
+
+	ModuleRegistry.modules[m.Name] = m
+	ModuleRegistry.order = append(ModuleRegistry.order, m.Name)
+}
+
+// Get returns a module by name.
+func Get(name string) *Module {
+	ModuleRegistry.mu.RLock()
+	defer ModuleRegistry.mu.RUnlock()
+	return ModuleRegistry.modules[name]
+}
+
+// All returns all registered module names.
+func All() []string {
+	ModuleRegistry.mu.RLock()
+	defer ModuleRegistry.mu.RUnlock()
+	result := make([]string, len(ModuleRegistry.order))
+	copy(result, ModuleRegistry.order)
+	return result
+}

pkg/orm/command.go

@@ -0,0 +1,68 @@
+package orm
+
+// Command represents an ORM write command for One2many/Many2many fields.
+// Mirrors: odoo/orm/fields.py Command class
+//
+// Odoo uses a tuple-based command system:
+//
+//	(0, 0, {values})      → CREATE: create new record
+//	(1, id, {values})     → UPDATE: update existing record
+//	(2, id, 0)            → DELETE: delete record
+//	(3, id, 0)            → UNLINK: remove link (M2M only)
+//	(4, id, 0)            → LINK: add link (M2M only)
+//	(5, 0, 0)             → CLEAR: remove all links (M2M only)
+//	(6, 0, [ids])         → SET: replace all links (M2M only)
+type Command struct {
+	Operation CommandOp
+	ID        int64
+	Values    Values
+	IDs       []int64 // For SET command
+}
+
+// CommandOp is the command operation type.
+type CommandOp int
+
+const (
+	CommandCreate CommandOp = 0
+	CommandUpdate CommandOp = 1
+	CommandDelete CommandOp = 2
+	CommandUnlink CommandOp = 3
+	CommandLink   CommandOp = 4
+	CommandClear  CommandOp = 5
+	CommandSet    CommandOp = 6
+)
+
+// CmdCreate returns a CREATE command. Mirrors: Command.create(values)
+func CmdCreate(values Values) Command {
+	return Command{Operation: CommandCreate, Values: values}
+}
+
+// CmdUpdate returns an UPDATE command. Mirrors: Command.update(id, values)
+func CmdUpdate(id int64, values Values) Command {
+	return Command{Operation: CommandUpdate, ID: id, Values: values}
+}
+
+// CmdDelete returns a DELETE command. Mirrors: Command.delete(id)
+func CmdDelete(id int64) Command {
+	return Command{Operation: CommandDelete, ID: id}
+}
+
+// CmdUnlink returns an UNLINK command. Mirrors: Command.unlink(id)
+func CmdUnlink(id int64) Command {
+	return Command{Operation: CommandUnlink, ID: id}
+}
+
+// CmdLink returns a LINK command. Mirrors: Command.link(id)
+func CmdLink(id int64) Command {
+	return Command{Operation: CommandLink, ID: id}
+}
+
+// CmdClear returns a CLEAR command. Mirrors: Command.clear()
+func CmdClear() Command {
+	return Command{Operation: CommandClear}
+}
+
+// CmdSet returns a SET command. Mirrors: Command.set(ids)
+func CmdSet(ids []int64) Command {
+	return Command{Operation: CommandSet, IDs: ids}
+}

pkg/orm/compute.go

@@ -0,0 +1,204 @@
+package orm
+
+import "fmt"
+
+// ComputeFunc is a function that computes field values for a recordset.
+// Mirrors: @api.depends decorated methods in Odoo.
+//
+// The function receives a singleton recordset and must return a Values map
+// with the computed field values.
+//
+// Example:
+//
+//	func computeAmount(rs *Recordset) (Values, error) {
+//	    total := 0.0
+//	    // ... sum line amounts ...
+//	    return Values{"amount_total": total}, nil
+//	}
+type ComputeFunc func(rs *Recordset) (Values, error)
+
+// RegisterCompute registers a compute function for a field.
+// The same function can compute multiple fields (call RegisterCompute for each).
+func (m *Model) RegisterCompute(fieldName string, fn ComputeFunc) {
+	if m.computes == nil {
+		m.computes = make(map[string]ComputeFunc)
+	}
+	m.computes[fieldName] = fn
+}
+
+// SetupComputes builds the reverse dependency map for this model.
+// Called after all modules are loaded.
+//
+// For each field with Depends, creates a mapping:
+//
+//	trigger_field → []computed_field_names
+//
+// So when trigger_field is written, we know which computes to re-run.
+func (m *Model) SetupComputes() {
+	m.dependencyMap = make(map[string][]string)
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if f.Compute == "" || len(f.Depends) == 0 {
+			continue
+		}
+		for _, dep := range f.Depends {
+			m.dependencyMap[dep] = append(m.dependencyMap[dep], name)
+		}
+	}
+}
+
+// RunStoredComputes runs compute functions for stored computed fields
+// and merges results into vals. Called before INSERT in Create().
+func RunStoredComputes(m *Model, env *Environment, id int64, vals Values) error {
+	if len(m.computes) == 0 {
+		return nil
+	}
+
+	// Collect stored computed fields that have registered functions
+	seen := make(map[string]bool) // Track compute functions already called (by field name)
+
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if f.Compute == "" || !f.Store {
+			continue
+		}
+		fn, ok := m.computes[name]
+		if !ok {
+			continue
+		}
+		// Deduplicate: same function may compute multiple fields
+		if seen[f.Compute] {
+			continue
+		}
+		seen[f.Compute] = true
+
+		// Create a temporary recordset for the computation
+		rs := &Recordset{env: env, model: m, ids: []int64{id}}
+		computed, err := fn(rs)
+		if err != nil {
+			return fmt.Errorf("orm: compute %s.%s: %w", m.name, name, err)
+		}
+
+		// Merge computed values
+		for k, v := range computed {
+			cf := m.GetField(k)
+			if cf != nil && cf.Store && cf.Compute != "" {
+				vals[k] = v
+			}
+		}
+	}
+	return nil
+}
+
+// TriggerRecompute re-computes stored fields that depend on written fields.
+// Called after UPDATE in Write().
+func TriggerRecompute(rs *Recordset, writtenFields Values) error {
+	m := rs.model
+	if len(m.dependencyMap) == 0 || len(m.computes) == 0 {
+		return nil
+	}
+
+	// Find which computed fields need re-computation
+	toRecompute := make(map[string]bool)
+	for fieldName := range writtenFields {
+		for _, computedField := range m.dependencyMap[fieldName] {
+			toRecompute[computedField] = true
+		}
+	}
+
+	if len(toRecompute) == 0 {
+		return nil
+	}
+
+	// Run computes for each record
+	seen := make(map[string]bool)
+	for _, id := range rs.IDs() {
+		singleton := rs.Browse(id)
+		recomputedVals := make(Values)
+
+		for fieldName := range toRecompute {
+			f := m.GetField(fieldName)
+			if f == nil || !f.Store {
+				continue
+			}
+			fn, ok := m.computes[fieldName]
+			if !ok {
+				continue
+			}
+			if seen[f.Compute] {
+				continue
+			}
+			seen[f.Compute] = true
+
+			computed, err := fn(singleton)
+			if err != nil {
+				return fmt.Errorf("orm: recompute %s.%s: %w", m.name, fieldName, err)
+			}
+			for k, v := range computed {
+				cf := m.GetField(k)
+				if cf != nil && cf.Store && cf.Compute != "" {
+					recomputedVals[k] = v
+				}
+			}
+		}
+
+		// Write recomputed values directly to DB (bypass hooks to avoid infinite loop)
+		if len(recomputedVals) > 0 {
+			if err := writeDirectNohook(rs.env, m, id, recomputedVals); err != nil {
+				return err
+			}
+		}
+
+		// Reset seen for next record
+		seen = make(map[string]bool)
+	}
+	return nil
+}
+
+// writeDirectNohook writes values directly without triggering hooks or recomputes.
+func writeDirectNohook(env *Environment, m *Model, id int64, vals Values) error {
+	var setClauses []string
+	var args []interface{}
+	idx := 1
+
+	for k, v := range vals {
+		f := m.GetField(k)
+		if f == nil || !f.IsStored() {
+			continue
+		}
+		setClauses = append(setClauses, fmt.Sprintf("%q = $%d", f.Column(), idx))
+		args = append(args, v)
+		idx++
+	}
+
+	if len(setClauses) == 0 {
+		return nil
+	}
+
+	args = append(args, id)
+	query := fmt.Sprintf(
+		`UPDATE %q SET %s WHERE "id" = $%d`,
+		m.Table(), joinStrings(setClauses, ", "), idx,
+	)
+
+	_, err := env.tx.Exec(env.ctx, query, args...)
+	return err
+}
+
+func joinStrings(s []string, sep string) string {
+	result := ""
+	for i, str := range s {
+		if i > 0 {
+			result += sep
+		}
+		result += str
+	}
+	return result
+}
+
+// SetupAllComputes calls SetupComputes on all registered models.
+func SetupAllComputes() {
+	for _, m := range Registry.Models() {
+		m.SetupComputes()
+	}
+}

pkg/orm/domain.go

@@ -0,0 +1,429 @@
+package orm
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Domain represents a search filter expression.
+// Mirrors: odoo/orm/domains.py Domain class
+//
+// Odoo uses prefix (Polish) notation:
+//
+//	['&', ('name', 'ilike', 'test'), ('active', '=', True)]
+//
+// Go equivalent:
+//
+//	And(Leaf("name", "ilike", "test"), Leaf("active", "=", true))
+type Domain []DomainNode
+
+// DomainNode is either an Operator or a Condition (leaf).
+type DomainNode interface {
+	isDomainNode()
+}
+
+// Operator is a logical operator in a domain expression.
+// Mirrors: odoo/orm/domains.py DOMAIN_OPERATORS
+type Operator string
+
+const (
+	OpAnd Operator = "&"
+	OpOr  Operator = "|"
+	OpNot Operator = "!"
+)
+
+func (o Operator) isDomainNode() {}
+
+// Condition is a leaf node in a domain expression.
+// Mirrors: odoo/orm/domains.py DomainLeaf
+//
+// Odoo: ('field_name', 'operator', value)
+type Condition struct {
+	Field    string // Field name (supports dot notation: "partner_id.name")
+	Operator string // Comparison operator
+	Value    Value  // Comparison value
+}
+
+func (c Condition) isDomainNode() {}
+
+// Valid comparison operators.
+// Mirrors: odoo/orm/domains.py COMPARISON_OPERATORS
+var validOperators = map[string]bool{
+	"=": true, "!=": true,
+	"<": true, ">": true, "<=": true, ">=": true,
+	"in": true, "not in": true,
+	"like": true, "not like": true,
+	"ilike": true, "not ilike": true,
+	"=like": true, "=ilike": true,
+	"any": true, "not any": true,
+	"child_of": true, "parent_of": true,
+}
+
+// Leaf creates a domain condition (leaf node).
+func Leaf(field, operator string, value Value) Condition {
+	return Condition{Field: field, Operator: operator, Value: value}
+}
+
+// And combines conditions with AND (default in Odoo).
+func And(nodes ...DomainNode) Domain {
+	if len(nodes) == 0 {
+		return nil
+	}
+	if len(nodes) == 1 {
+		return Domain{nodes[0]}
+	}
+	result := Domain{}
+	for i := 0; i < len(nodes)-1; i++ {
+		result = append(result, OpAnd)
+	}
+	result = append(result, nodes...)
+	return result
+}
+
+// Or combines conditions with OR.
+func Or(nodes ...DomainNode) Domain {
+	if len(nodes) == 0 {
+		return nil
+	}
+	if len(nodes) == 1 {
+		return Domain{nodes[0]}
+	}
+	result := Domain{}
+	for i := 0; i < len(nodes)-1; i++ {
+		result = append(result, OpOr)
+	}
+	result = append(result, nodes...)
+	return result
+}
+
+// Not negates a condition.
+func Not(node DomainNode) Domain {
+	return Domain{OpNot, node}
+}
+
+// DomainCompiler compiles a Domain to SQL WHERE clause.
+// Mirrors: odoo/orm/domains.py Domain._to_sql()
+type DomainCompiler struct {
+	model        *Model
+	params       []interface{}
+	joins        []joinClause
+	aliasCounter int
+}
+
+type joinClause struct {
+	table string
+	alias string
+	on    string
+}
+
+// CompileResult holds the compiled SQL WHERE clause, JOINs, and parameters.
+type CompileResult struct {
+	Where  string
+	Joins  string
+	Params []interface{}
+}
+
+// Compile converts a domain to a SQL WHERE clause with parameters and JOINs.
+func (dc *DomainCompiler) Compile(domain Domain) (string, []interface{}, error) {
+	if len(domain) == 0 {
+		return "TRUE", nil, nil
+	}
+
+	dc.params = nil
+	dc.joins = nil
+	dc.aliasCounter = 0
+	sql, err := dc.compileNodes(domain, 0)
+	if err != nil {
+		return "", nil, err
+	}
+	return sql, dc.params, nil
+}
+
+// JoinSQL returns the SQL JOIN clauses generated during compilation.
+func (dc *DomainCompiler) JoinSQL() string {
+	if len(dc.joins) == 0 {
+		return ""
+	}
+	var parts []string
+	for _, j := range dc.joins {
+		parts = append(parts, fmt.Sprintf("LEFT JOIN %q AS %q ON %s", j.table, j.alias, j.on))
+	}
+	return " " + strings.Join(parts, " ")
+}
+
+func (dc *DomainCompiler) compileNodes(domain Domain, pos int) (string, error) {
+	if pos >= len(domain) {
+		return "TRUE", nil
+	}
+
+	node := domain[pos]
+
+	switch n := node.(type) {
+	case Operator:
+		switch n {
+		case OpAnd:
+			left, err := dc.compileNodes(domain, pos+1)
+			if err != nil {
+				return "", err
+			}
+			right, err := dc.compileNodes(domain, pos+2)
+			if err != nil {
+				return "", err
+			}
+			return fmt.Sprintf("(%s AND %s)", left, right), nil
+
+		case OpOr:
+			left, err := dc.compileNodes(domain, pos+1)
+			if err != nil {
+				return "", err
+			}
+			right, err := dc.compileNodes(domain, pos+2)
+			if err != nil {
+				return "", err
+			}
+			return fmt.Sprintf("(%s OR %s)", left, right), nil
+
+		case OpNot:
+			inner, err := dc.compileNodes(domain, pos+1)
+			if err != nil {
+				return "", err
+			}
+			return fmt.Sprintf("(NOT %s)", inner), nil
+		}
+
+	case Condition:
+		return dc.compileCondition(n)
+	}
+
+	return "", fmt.Errorf("unexpected domain node at position %d: %v", pos, node)
+}
+
+func (dc *DomainCompiler) compileCondition(c Condition) (string, error) {
+	if !validOperators[c.Operator] {
+		return "", fmt.Errorf("invalid operator: %q", c.Operator)
+	}
+
+	// Handle dot notation (e.g., "partner_id.name")
+	parts := strings.Split(c.Field, ".")
+	column := parts[0]
+
+	// TODO: Handle JOINs for dot notation paths
+	// For now, only support direct fields
+	if len(parts) > 1 {
+		// Placeholder for JOIN resolution
+		return dc.compileJoinedCondition(parts, c.Operator, c.Value)
+	}
+
+	return dc.compileSimpleCondition(column, c.Operator, c.Value)
+}
+
+func (dc *DomainCompiler) compileSimpleCondition(column, operator string, value Value) (string, error) {
+	paramIdx := len(dc.params) + 1
+
+	switch operator {
+	case "=", "!=", "<", ">", "<=", ">=":
+		if value == nil || value == false {
+			if operator == "=" {
+				return fmt.Sprintf("%q IS NULL", column), nil
+			}
+			return fmt.Sprintf("%q IS NOT NULL", column), nil
+		}
+		dc.params = append(dc.params, value)
+		return fmt.Sprintf("%q %s $%d", column, operator, paramIdx), nil
+
+	case "in":
+		vals := normalizeSlice(value)
+		if vals == nil {
+			return "", fmt.Errorf("'in' operator requires a slice value")
+		}
+		if len(vals) == 0 {
+			return "FALSE", nil
+		}
+		placeholders := make([]string, len(vals))
+		for i, v := range vals {
+			dc.params = append(dc.params, v)
+			placeholders[i] = fmt.Sprintf("$%d", paramIdx+i)
+		}
+		return fmt.Sprintf("%q IN (%s)", column, strings.Join(placeholders, ", ")), nil
+
+	case "not in":
+		vals := normalizeSlice(value)
+		if vals == nil {
+			return "", fmt.Errorf("'not in' operator requires a slice value")
+		}
+		if len(vals) == 0 {
+			return "TRUE", nil
+		}
+		placeholders := make([]string, len(vals))
+		for i, v := range vals {
+			dc.params = append(dc.params, v)
+			placeholders[i] = fmt.Sprintf("$%d", paramIdx+i)
+		}
+		return fmt.Sprintf("%q NOT IN (%s)", column, strings.Join(placeholders, ", ")), nil
+
+	case "like":
+		dc.params = append(dc.params, value)
+		return fmt.Sprintf("%q LIKE $%d", column, paramIdx), nil
+
+	case "not like":
+		dc.params = append(dc.params, value)
+		return fmt.Sprintf("%q NOT LIKE $%d", column, paramIdx), nil
+
+	case "ilike":
+		dc.params = append(dc.params, value)
+		return fmt.Sprintf("%q ILIKE $%d", column, paramIdx), nil
+
+	case "not ilike":
+		dc.params = append(dc.params, value)
+		return fmt.Sprintf("%q NOT ILIKE $%d", column, paramIdx), nil
+
+	case "=like":
+		dc.params = append(dc.params, value)
+		return fmt.Sprintf("%q LIKE $%d", column, paramIdx), nil
+
+	case "=ilike":
+		dc.params = append(dc.params, value)
+		return fmt.Sprintf("%q ILIKE $%d", column, paramIdx), nil
+
+	default:
+		return "", fmt.Errorf("unhandled operator: %q", operator)
+	}
+}
+
+// compileJoinedCondition resolves dot-notation paths (e.g., "partner_id.country_id.code")
+// by generating LEFT JOINs through the relational chain.
+func (dc *DomainCompiler) compileJoinedCondition(fieldPath []string, operator string, value Value) (string, error) {
+	currentModel := dc.model
+	currentAlias := dc.model.Table()
+
+	// Walk the path: each segment except the last is a Many2one FK to JOIN through
+	for i := 0; i < len(fieldPath)-1; i++ {
+		fieldName := fieldPath[i]
+		f := currentModel.GetField(fieldName)
+		if f == nil {
+			return "", fmt.Errorf("field %q not found on %s", fieldName, currentModel.Name())
+		}
+		if f.Type != TypeMany2one {
+			return "", fmt.Errorf("field %q on %s is not Many2one, cannot traverse", fieldName, currentModel.Name())
+		}
+
+		comodel := Registry.Get(f.Comodel)
+		if comodel == nil {
+			return "", fmt.Errorf("comodel %q not found for field %q", f.Comodel, fieldName)
+		}
+
+		// Generate alias and JOIN
+		dc.aliasCounter++
+		alias := fmt.Sprintf("_j%d", dc.aliasCounter)
+		dc.joins = append(dc.joins, joinClause{
+			table: comodel.Table(),
+			alias: alias,
+			on:    fmt.Sprintf("%s.%q = %q.\"id\"", currentAlias, f.Column(), alias),
+		})
+
+		currentModel = comodel
+		currentAlias = alias
+	}
+
+	// The last segment is the actual field to filter on
+	leafField := fieldPath[len(fieldPath)-1]
+	qualifiedColumn := fmt.Sprintf("%s.%q", currentAlias, leafField)
+
+	return dc.compileQualifiedCondition(qualifiedColumn, operator, value)
+}
+
+// compileQualifiedCondition compiles a condition with a fully qualified column (alias.column).
+func (dc *DomainCompiler) compileQualifiedCondition(qualifiedColumn, operator string, value Value) (string, error) {
+	paramIdx := len(dc.params) + 1
+
+	switch operator {
+	case "=", "!=", "<", ">", "<=", ">=":
+		if value == nil || value == false {
+			if operator == "=" {
+				return fmt.Sprintf("%s IS NULL", qualifiedColumn), nil
+			}
+			return fmt.Sprintf("%s IS NOT NULL", qualifiedColumn), nil
+		}
+		dc.params = append(dc.params, value)
+		return fmt.Sprintf("%s %s $%d", qualifiedColumn, operator, paramIdx), nil
+
+	case "in", "not in":
+		vals := normalizeSlice(value)
+		if vals == nil {
+			return "FALSE", nil
+		}
+		if len(vals) == 0 {
+			if operator == "in" {
+				return "FALSE", nil
+			}
+			return "TRUE", nil
+		}
+		placeholders := make([]string, len(vals))
+		for i, v := range vals {
+			dc.params = append(dc.params, v)
+			placeholders[i] = fmt.Sprintf("$%d", paramIdx+i)
+		}
+		op := "IN"
+		if operator == "not in" {
+			op = "NOT IN"
+		}
+		return fmt.Sprintf("%s %s (%s)", qualifiedColumn, op, strings.Join(placeholders, ", ")), nil
+
+	case "like", "not like", "ilike", "not ilike", "=like", "=ilike":
+		dc.params = append(dc.params, value)
+		sqlOp := strings.ToUpper(strings.TrimPrefix(operator, "="))
+		if strings.HasPrefix(operator, "=") {
+			sqlOp = strings.ToUpper(operator[1:])
+		}
+		switch operator {
+		case "like":
+			sqlOp = "LIKE"
+		case "not like":
+			sqlOp = "NOT LIKE"
+		case "ilike", "=ilike":
+			sqlOp = "ILIKE"
+		case "not ilike":
+			sqlOp = "NOT ILIKE"
+		case "=like":
+			sqlOp = "LIKE"
+		}
+		return fmt.Sprintf("%s %s $%d", qualifiedColumn, sqlOp, paramIdx), nil
+
+	default:
+		dc.params = append(dc.params, value)
+		return fmt.Sprintf("%s %s $%d", qualifiedColumn, operator, paramIdx), nil
+	}
+}
+
+// normalizeSlice converts typed slices to []interface{} for IN/NOT IN operators.
+func normalizeSlice(value Value) []interface{} {
+	switch v := value.(type) {
+	case []interface{}:
+		return v
+	case []int64:
+		out := make([]interface{}, len(v))
+		for i, x := range v {
+			out[i] = x
+		}
+		return out
+	case []float64:
+		out := make([]interface{}, len(v))
+		for i, x := range v {
+			out[i] = x
+		}
+		return out
+	case []string:
+		out := make([]interface{}, len(v))
+		for i, x := range v {
+			out[i] = x
+		}
+		return out
+	case []int:
+		out := make([]interface{}, len(v))
+		for i, x := range v {
+			out[i] = x
+		}
+		return out
+	}
+	return nil
+}

pkg/orm/environment.go

@@ -0,0 +1,257 @@
+package orm
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// Environment is the central context for all ORM operations.
+// Mirrors: odoo/orm/environments.py Environment
+//
+// Odoo: self.env['res.partner'].search([('name', 'ilike', 'test')])
+// Go:   env.Model("res.partner").Search(And(Leaf("name", "ilike", "test")))
+//
+// An Environment wraps:
+// - A database transaction (cursor in Odoo terms)
+// - The current user ID
+// - The current company ID
+// - Context values (lang, tz, etc.)
+type Environment struct {
+	ctx       context.Context
+	pool      *pgxpool.Pool
+	tx        pgx.Tx
+	uid       int64
+	companyID int64
+	su        bool // sudo mode (bypass access checks)
+	context   map[string]interface{}
+	cache     *Cache
+}
+
+// EnvConfig configures a new Environment.
+type EnvConfig struct {
+	Pool      *pgxpool.Pool
+	UID       int64
+	CompanyID int64
+	Context   map[string]interface{}
+}
+
+// NewEnvironment creates a new ORM environment.
+// Mirrors: odoo.api.Environment(cr, uid, context)
+func NewEnvironment(ctx context.Context, cfg EnvConfig) (*Environment, error) {
+	tx, err := cfg.Pool.Begin(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("orm: begin transaction: %w", err)
+	}
+
+	envCtx := cfg.Context
+	if envCtx == nil {
+		envCtx = make(map[string]interface{})
+	}
+
+	return &Environment{
+		ctx:       ctx,
+		pool:      cfg.Pool,
+		tx:        tx,
+		uid:       cfg.UID,
+		companyID: cfg.CompanyID,
+		context:   envCtx,
+		cache:     NewCache(),
+	}, nil
+}
+
+// Model returns a Recordset bound to this environment for the given model.
+// Mirrors: self.env['model.name']
+func (env *Environment) Model(name string) *Recordset {
+	m := Registry.MustGet(name)
+	return &Recordset{
+		env:   env,
+		model: m,
+		ids:   nil,
+	}
+}
+
+// Ref returns a record by its XML ID (external identifier).
+// Mirrors: self.env.ref('module.xml_id')
+func (env *Environment) Ref(xmlID string) (*Recordset, error) {
+	// Query ir_model_data for the external ID
+	var resModel string
+	var resID int64
+
+	err := env.tx.QueryRow(env.ctx,
+		`SELECT model, res_id FROM ir_model_data WHERE module || '.' || name = $1 LIMIT 1`,
+		xmlID,
+	).Scan(&resModel, &resID)
+	if err != nil {
+		return nil, fmt.Errorf("orm: ref %q not found: %w", xmlID, err)
+	}
+
+	return env.Model(resModel).Browse(resID), nil
+}
+
+// UID returns the current user ID.
+func (env *Environment) UID() int64 { return env.uid }
+
+// CompanyID returns the current company ID.
+func (env *Environment) CompanyID() int64 { return env.companyID }
+
+// IsSuperuser returns true if this environment bypasses access checks.
+func (env *Environment) IsSuperuser() bool { return env.su }
+
+// Context returns the environment context (Odoo-style key-value context).
+func (env *Environment) Context() map[string]interface{} { return env.context }
+
+// Ctx returns the Go context.Context for database operations.
+func (env *Environment) Ctx() context.Context { return env.ctx }
+
+// Lang returns the language from context.
+func (env *Environment) Lang() string {
+	if lang, ok := env.context["lang"].(string); ok {
+		return lang
+	}
+	return "en_US"
+}
+
+// Tx returns the underlying database transaction.
+func (env *Environment) Tx() pgx.Tx { return env.tx }
+
+// Sudo returns a new environment with superuser privileges.
+// Mirrors: self.env['model'].sudo()
+func (env *Environment) Sudo() *Environment {
+	return &Environment{
+		ctx:       env.ctx,
+		pool:      env.pool,
+		tx:        env.tx,
+		uid:       env.uid,
+		companyID: env.companyID,
+		su:        true,
+		context:   env.context,
+		cache:     env.cache,
+	}
+}
+
+// WithUser returns a new environment for a different user.
+// Mirrors: self.with_user(user_id)
+func (env *Environment) WithUser(uid int64) *Environment {
+	return &Environment{
+		ctx:       env.ctx,
+		pool:      env.pool,
+		tx:        env.tx,
+		uid:       uid,
+		companyID: env.companyID,
+		su:        false,
+		context:   env.context,
+		cache:     env.cache,
+	}
+}
+
+// WithCompany returns a new environment for a different company.
+// Mirrors: self.with_company(company_id)
+func (env *Environment) WithCompany(companyID int64) *Environment {
+	return &Environment{
+		ctx:       env.ctx,
+		pool:      env.pool,
+		tx:        env.tx,
+		uid:       env.uid,
+		companyID: companyID,
+		su:        env.su,
+		context:   env.context,
+		cache:     env.cache,
+	}
+}
+
+// WithContext returns a new environment with additional context values.
+// Mirrors: self.with_context(key=value)
+func (env *Environment) WithContext(extra map[string]interface{}) *Environment {
+	merged := make(map[string]interface{}, len(env.context)+len(extra))
+	for k, v := range env.context {
+		merged[k] = v
+	}
+	for k, v := range extra {
+		merged[k] = v
+	}
+	return &Environment{
+		ctx:       env.ctx,
+		pool:      env.pool,
+		tx:        env.tx,
+		uid:       env.uid,
+		companyID: env.companyID,
+		su:        env.su,
+		context:   merged,
+		cache:     env.cache,
+	}
+}
+
+// Commit commits the database transaction.
+func (env *Environment) Commit() error {
+	return env.tx.Commit(env.ctx)
+}
+
+// Rollback rolls back the database transaction.
+func (env *Environment) Rollback() error {
+	return env.tx.Rollback(env.ctx)
+}
+
+// Close rolls back uncommitted changes and releases the connection.
+func (env *Environment) Close() error {
+	return env.tx.Rollback(env.ctx)
+}
+
+// --- Cache ---
+
+// Cache is a per-environment record cache.
+// Mirrors: odoo/orm/environments.py Transaction cache
+type Cache struct {
+	// model_name → record_id → field_name → value
+	data map[string]map[int64]map[string]Value
+}
+
+// NewCache creates an empty cache.
+func NewCache() *Cache {
+	return &Cache{
+		data: make(map[string]map[int64]map[string]Value),
+	}
+}
+
+// Get retrieves a cached value.
+func (c *Cache) Get(model string, id int64, field string) (Value, bool) {
+	records, ok := c.data[model]
+	if !ok {
+		return nil, false
+	}
+	fields, ok := records[id]
+	if !ok {
+		return nil, false
+	}
+	val, ok := fields[field]
+	return val, ok
+}
+
+// Set stores a value in the cache.
+func (c *Cache) Set(model string, id int64, field string, value Value) {
+	records, ok := c.data[model]
+	if !ok {
+		records = make(map[int64]map[string]Value)
+		c.data[model] = records
+	}
+	fields, ok := records[id]
+	if !ok {
+		fields = make(map[string]Value)
+		records[id] = fields
+	}
+	fields[field] = value
+}
+
+// Invalidate removes all cached values for a model.
+func (c *Cache) Invalidate(model string) {
+	delete(c.data, model)
+}
+
+// InvalidateRecord removes cached values for a specific record.
+func (c *Cache) InvalidateRecord(model string, id int64) {
+	if records, ok := c.data[model]; ok {
+		delete(records, id)
+	}
+}

pkg/orm/field.go

@@ -0,0 +1,377 @@
+package orm
+
+import (
+	"fmt"
+	"time"
+)
+
+// Field defines a model field.
+// Mirrors: odoo/orm/fields.py Field class
+//
+// Odoo field declaration:
+//
+//	name = fields.Char(string='Name', required=True, index=True)
+//
+// Go equivalent:
+//
+//	Char("name", FieldOpts{String: "Name", Required: true, Index: true})
+type Field struct {
+	Name   string    // Technical name (e.g., "name", "partner_id")
+	Type   FieldType // Field type (TypeChar, TypeMany2one, etc.)
+	String string    // Human-readable label
+
+	// Constraints
+	Required bool
+	Readonly bool
+	Index    bool   // Create database index
+	Unique   bool   // Unique constraint (not in Odoo, but useful)
+	Size     int    // Max length for Char fields
+	Default  Value  // Default value or function name
+	Help     string // Tooltip / help text
+
+	// Computed fields
+	// Mirrors: odoo/orm/fields.py Field.compute, Field.inverse, Field.depends
+	Compute  string   // Method name to compute this field
+	Inverse  string   // Method name to write back computed value
+	Depends  []string // Field names this compute depends on
+	Store    bool     // Store computed value in DB (default: false for computed)
+	Precompute bool   // Compute before first DB flush
+
+	// Related fields
+	// Mirrors: odoo/orm/fields.py Field.related
+	Related string // Dot-separated path (e.g., "partner_id.name")
+
+	// Selection
+	Selection []SelectionItem
+
+	// Relational fields
+	// Mirrors: odoo/orm/fields_relational.py
+	Comodel      string   // Target model name (e.g., "res.company")
+	InverseField string   // For One2many: field name in comodel pointing back
+	Relation     string   // For Many2many: junction table name
+	Column1      string   // For Many2many: column name for this model's FK
+	Column2      string   // For Many2many: column name for comodel's FK
+	Domain       Domain   // Default domain filter for relational fields
+	OnDelete     OnDelete // For Many2one: what happens on target deletion
+
+	// Monetary
+	CurrencyField string // Field name holding the currency_id
+
+	// Translation
+	Translate bool // Field supports multi-language
+
+	// Groups (access control)
+	Groups string // Comma-separated group XML IDs
+
+	// Internal
+	model  *Model // Back-reference to owning model
+	column string // SQL column name (usually same as Name)
+}
+
+// Column returns the SQL column name for this field.
+func (f *Field) Column() string {
+	if f.column != "" {
+		return f.column
+	}
+	return f.Name
+}
+
+// SQLType returns the PostgreSQL type for this field.
+func (f *Field) SQLType() string {
+	if f.Type == TypeChar && f.Size > 0 {
+		return fmt.Sprintf("varchar(%d)", f.Size)
+	}
+	return f.Type.SQLType()
+}
+
+// IsStored returns true if this field has a database column.
+func (f *Field) IsStored() bool {
+	// Computed fields without Store are not stored
+	if f.Compute != "" && !f.Store {
+		return false
+	}
+	// Related fields without Store are not stored
+	if f.Related != "" && !f.Store {
+		return false
+	}
+	return f.Type.IsStored()
+}
+
+// IsRelational returns true for relational field types.
+func (f *Field) IsRelational() bool {
+	return f.Type.IsRelational()
+}
+
+// --- Field constructors ---
+// Mirror Odoo's fields.Char(), fields.Integer(), etc.
+
+// FieldOpts holds optional parameters for field constructors.
+type FieldOpts struct {
+	String        string
+	Required      bool
+	Readonly      bool
+	Index         bool
+	Size          int
+	Default       Value
+	Help          string
+	Compute       string
+	Inverse       string
+	Depends       []string
+	Store         bool
+	Precompute    bool
+	Related       string
+	Selection     []SelectionItem
+	Comodel       string
+	InverseField  string
+	Relation      string
+	Column1       string
+	Column2       string
+	Domain        Domain
+	OnDelete      OnDelete
+	CurrencyField string
+	Translate     bool
+	Groups        string
+}
+
+func newField(name string, typ FieldType, opts FieldOpts) *Field {
+	f := &Field{
+		Name:          name,
+		Type:          typ,
+		String:        opts.String,
+		Required:      opts.Required,
+		Readonly:      opts.Readonly,
+		Index:         opts.Index,
+		Size:          opts.Size,
+		Default:       opts.Default,
+		Help:          opts.Help,
+		Compute:       opts.Compute,
+		Inverse:       opts.Inverse,
+		Depends:       opts.Depends,
+		Store:         opts.Store,
+		Precompute:    opts.Precompute,
+		Related:       opts.Related,
+		Selection:     opts.Selection,
+		Comodel:       opts.Comodel,
+		InverseField:  opts.InverseField,
+		Relation:      opts.Relation,
+		Column1:       opts.Column1,
+		Column2:       opts.Column2,
+		Domain:        opts.Domain,
+		OnDelete:      opts.OnDelete,
+		CurrencyField: opts.CurrencyField,
+		Translate:     opts.Translate,
+		Groups:        opts.Groups,
+		column:        name,
+	}
+	if f.String == "" {
+		f.String = name
+	}
+	return f
+}
+
+// Char creates a character field. Mirrors: fields.Char
+func Char(name string, opts FieldOpts) *Field {
+	return newField(name, TypeChar, opts)
+}
+
+// Text creates a text field. Mirrors: fields.Text
+func Text(name string, opts FieldOpts) *Field {
+	return newField(name, TypeText, opts)
+}
+
+// HTML creates an HTML field. Mirrors: fields.Html
+func HTML(name string, opts FieldOpts) *Field {
+	return newField(name, TypeHTML, opts)
+}
+
+// Integer creates an integer field. Mirrors: fields.Integer
+func Integer(name string, opts FieldOpts) *Field {
+	return newField(name, TypeInteger, opts)
+}
+
+// Float creates a float field. Mirrors: fields.Float
+func Float(name string, opts FieldOpts) *Field {
+	return newField(name, TypeFloat, opts)
+}
+
+// Monetary creates a monetary field. Mirrors: fields.Monetary
+func Monetary(name string, opts FieldOpts) *Field {
+	return newField(name, TypeMonetary, opts)
+}
+
+// Boolean creates a boolean field. Mirrors: fields.Boolean
+func Boolean(name string, opts FieldOpts) *Field {
+	return newField(name, TypeBoolean, opts)
+}
+
+// Date creates a date field. Mirrors: fields.Date
+func Date(name string, opts FieldOpts) *Field {
+	return newField(name, TypeDate, opts)
+}
+
+// Datetime creates a datetime field. Mirrors: fields.Datetime
+func Datetime(name string, opts FieldOpts) *Field {
+	return newField(name, TypeDatetime, opts)
+}
+
+// Binary creates a binary field. Mirrors: fields.Binary
+func Binary(name string, opts FieldOpts) *Field {
+	return newField(name, TypeBinary, opts)
+}
+
+// Selection creates a selection field. Mirrors: fields.Selection
+func Selection(name string, selection []SelectionItem, opts FieldOpts) *Field {
+	opts.Selection = selection
+	return newField(name, TypeSelection, opts)
+}
+
+// Json creates a JSON field. Mirrors: fields.Json
+func Json(name string, opts FieldOpts) *Field {
+	return newField(name, TypeJson, opts)
+}
+
+// Many2one creates a many-to-one relational field. Mirrors: fields.Many2one
+func Many2one(name string, comodel string, opts FieldOpts) *Field {
+	opts.Comodel = comodel
+	if opts.OnDelete == "" {
+		opts.OnDelete = OnDeleteSetNull
+	}
+	f := newField(name, TypeMany2one, opts)
+	f.Index = true // M2O fields are always indexed in Odoo
+	return f
+}
+
+// One2many creates a one-to-many relational field. Mirrors: fields.One2many
+func One2many(name string, comodel string, inverseField string, opts FieldOpts) *Field {
+	opts.Comodel = comodel
+	opts.InverseField = inverseField
+	return newField(name, TypeOne2many, opts)
+}
+
+// Many2many creates a many-to-many relational field. Mirrors: fields.Many2many
+func Many2many(name string, comodel string, opts FieldOpts) *Field {
+	opts.Comodel = comodel
+	return newField(name, TypeMany2many, opts)
+}
+
+// --- Default & Validation Helpers ---
+
+// ResolveDefault returns the concrete default value for this field.
+// Handles: literal values, "today" sentinel for date/datetime fields.
+func (f *Field) ResolveDefault() Value {
+	if f.Default == nil {
+		return nil
+	}
+
+	switch v := f.Default.(type) {
+	case string:
+		if v == "today" && (f.Type == TypeDate || f.Type == TypeDatetime) {
+			return time.Now().Format("2006-01-02")
+		}
+		return v
+	case bool, int, int64, float64:
+		return v
+	default:
+		return v
+	}
+}
+
+// ApplyDefaults sets default values on vals for any stored field that is
+// missing from vals and has a non-nil Default.
+// Mirrors: odoo/orm/models.py BaseModel._add_missing_default_values()
+func ApplyDefaults(m *Model, vals Values) {
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if name == "id" || !f.IsStored() || f.Default == nil {
+			continue
+		}
+		if _, exists := vals[name]; exists {
+			continue
+		}
+		if resolved := f.ResolveDefault(); resolved != nil {
+			vals[name] = resolved
+		}
+	}
+}
+
+// ValidateRequired checks that all required stored fields have a non-nil value in vals.
+// Returns an error describing the first missing required field.
+// Mirrors: odoo/orm/models.py BaseModel._check_required()
+func ValidateRequired(m *Model, vals Values, isCreate bool) error {
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if !f.Required || !f.IsStored() || name == "id" {
+			continue
+		}
+		// Magic fields are auto-set
+		if name == "create_uid" || name == "write_uid" || name == "create_date" || name == "write_date" {
+			continue
+		}
+		if isCreate {
+			val, exists := vals[name]
+			if !exists || val == nil {
+				return fmt.Errorf("orm: field '%s' is required on %s", name, m.Name())
+			}
+		}
+		// On write: only check if the field is explicitly set to nil
+		if !isCreate {
+			val, exists := vals[name]
+			if exists && val == nil {
+				return fmt.Errorf("orm: field '%s' cannot be set to null on %s (required)", name, m.Name())
+			}
+		}
+	}
+	return nil
+}
+
+// JunctionTable returns the M2M junction table name for this field.
+func (f *Field) JunctionTable() string {
+	if f.Relation != "" {
+		return f.Relation
+	}
+	if f.model == nil || f.Comodel == "" {
+		return ""
+	}
+	comodel := Registry.Get(f.Comodel)
+	if comodel == nil {
+		return ""
+	}
+	t1, t2 := f.model.Table(), comodel.Table()
+	if t1 > t2 {
+		t1, t2 = t2, t1
+	}
+	return fmt.Sprintf("%s_%s_rel", t1, t2)
+}
+
+// JunctionCol1 returns this model's FK column in the junction table.
+func (f *Field) JunctionCol1() string {
+	if f.Column1 != "" {
+		return f.Column1
+	}
+	if f.model == nil {
+		return ""
+	}
+	col := f.model.Table() + "_id"
+	// Self-referential
+	comodel := Registry.Get(f.Comodel)
+	if comodel != nil && f.model.Table() == comodel.Table() {
+		col = f.model.Table() + "_src_id"
+	}
+	return col
+}
+
+// JunctionCol2 returns the comodel's FK column in the junction table.
+func (f *Field) JunctionCol2() string {
+	if f.Column2 != "" {
+		return f.Column2
+	}
+	comodel := Registry.Get(f.Comodel)
+	if comodel == nil {
+		return ""
+	}
+	col := comodel.Table() + "_id"
+	if f.model != nil && f.model.Table() == comodel.Table() {
+		col = comodel.Table() + "_dst_id"
+	}
+	return col
+}

pkg/orm/model.go

@@ -0,0 +1,378 @@
+package orm
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Model defines an Odoo model (database table + business logic).
+// Mirrors: odoo/orm/models.py BaseModel
+//
+// Odoo:
+//
+//	class ResPartner(models.Model):
+//	    _name = 'res.partner'
+//	    _description = 'Contact'
+//	    _order = 'name'
+//	    _rec_name = 'name'
+//
+// Go:
+//
+//	NewModel("res.partner", ModelOpts{
+//	    Description: "Contact",
+//	    Order: "name",
+//	    RecName: "name",
+//	})
+type Model struct {
+	name        string
+	description string
+	modelType   ModelType
+	table       string    // SQL table name
+	order       string    // Default sort order
+	recName     string    // Field used as display name
+	inherit     []string  // _inherit: models to extend
+	inherits    map[string]string // _inherits: {parent_model: fk_field}
+	auto        bool      // Auto-create/update table schema
+	logAccess   bool      // Auto-create create_uid, write_uid, create_date, write_date
+
+	// Fields
+	fields map[string]*Field
+
+	// Methods (registered business logic)
+	methods map[string]interface{}
+
+	// Access control
+	checkCompany bool // Enforce multi-company record rules
+
+	// Hooks
+	BeforeCreate func(env *Environment, vals Values) error        // Called before INSERT
+	Constraints  []ConstraintFunc                                 // Validation constraints
+	Methods      map[string]MethodFunc                            // Named business methods
+
+	// Computed fields
+	computes      map[string]ComputeFunc // field_name → compute function
+	dependencyMap map[string][]string    // trigger_field → []computed_field_names
+
+	// Resolved
+	parents    []*Model          // Resolved parent models from _inherit
+	allFields  map[string]*Field // Including fields from parents
+	fieldOrder []string          // Field creation order
+}
+
+// ModelOpts configures a new model.
+type ModelOpts struct {
+	Description  string
+	Type         ModelType
+	Table        string
+	Order        string
+	RecName      string
+	Inherit      []string
+	Inherits     map[string]string
+	CheckCompany bool
+}
+
+// NewModel creates and registers a new model.
+// Mirrors: class MyModel(models.Model): _name = '...'
+func NewModel(name string, opts ModelOpts) *Model {
+	m := &Model{
+		name:         name,
+		description:  opts.Description,
+		modelType:    opts.Type,
+		table:        opts.Table,
+		order:        opts.Order,
+		recName:      opts.RecName,
+		inherit:      opts.Inherit,
+		inherits:     opts.Inherits,
+		checkCompany: opts.CheckCompany,
+		auto:         opts.Type != ModelAbstract,
+		logAccess:    true,
+		fields:       make(map[string]*Field),
+		methods:      make(map[string]interface{}),
+		allFields:    make(map[string]*Field),
+	}
+
+	// Derive table name from model name if not specified.
+	// Mirrors: odoo/orm/models.py BaseModel._table
+	// 'res.partner' → 'res_partner'
+	if m.table == "" && m.auto {
+		m.table = strings.ReplaceAll(name, ".", "_")
+	}
+
+	if m.order == "" {
+		m.order = "id"
+	}
+
+	if m.recName == "" {
+		m.recName = "name"
+	}
+
+	// Add magic fields.
+	// Mirrors: odoo/orm/models.py BaseModel.MAGIC_COLUMNS
+	m.addMagicFields()
+
+	Registry.Register(m)
+	return m
+}
+
+// addMagicFields adds Odoo's automatic fields to every model.
+// Mirrors: odoo/orm/models.py MAGIC_COLUMNS + LOG_ACCESS_COLUMNS
+func (m *Model) addMagicFields() {
+	// id is always present
+	m.AddField(Integer("id", FieldOpts{
+		String:   "ID",
+		Readonly: true,
+	}))
+
+	if m.logAccess {
+		m.AddField(Many2one("create_uid", "res.users", FieldOpts{
+			String:   "Created by",
+			Readonly: true,
+		}))
+		m.AddField(Datetime("create_date", FieldOpts{
+			String:   "Created on",
+			Readonly: true,
+		}))
+		m.AddField(Many2one("write_uid", "res.users", FieldOpts{
+			String:   "Last Updated by",
+			Readonly: true,
+		}))
+		m.AddField(Datetime("write_date", FieldOpts{
+			String:   "Last Updated on",
+			Readonly: true,
+		}))
+	}
+}
+
+// AddField adds a field to this model.
+func (m *Model) AddField(f *Field) *Model {
+	f.model = m
+	m.fields[f.Name] = f
+	m.allFields[f.Name] = f
+	m.fieldOrder = append(m.fieldOrder, f.Name)
+	return m
+}
+
+// AddFields adds multiple fields at once.
+func (m *Model) AddFields(fields ...*Field) *Model {
+	for _, f := range fields {
+		m.AddField(f)
+	}
+	return m
+}
+
+// GetField returns a field by name, or nil.
+func (m *Model) GetField(name string) *Field {
+	return m.allFields[name]
+}
+
+// Fields returns all fields of this model (including inherited).
+func (m *Model) Fields() map[string]*Field {
+	return m.allFields
+}
+
+// StoredFields returns fields that have a database column.
+func (m *Model) StoredFields() []*Field {
+	var result []*Field
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if f.IsStored() {
+			result = append(result, f)
+		}
+	}
+	return result
+}
+
+// Name returns the model name (e.g., "res.partner").
+func (m *Model) Name() string { return m.name }
+
+// Table returns the SQL table name (e.g., "res_partner").
+func (m *Model) Table() string { return m.table }
+
+// Description returns the human-readable model description.
+func (m *Model) Description() string { return m.description }
+
+// Order returns the default sort expression.
+func (m *Model) Order() string { return m.order }
+
+// RecName returns the field name used as display name.
+func (m *Model) RecName() string { return m.recName }
+
+// IsAbstract returns true if this model has no database table.
+func (m *Model) IsAbstract() bool { return m.modelType == ModelAbstract }
+
+// IsTransient returns true if this is a wizard/temporary model.
+func (m *Model) IsTransient() bool { return m.modelType == ModelTransient }
+
+// ConstraintFunc validates a recordset. Returns error if constraint violated.
+// Mirrors: @api.constrains in Odoo.
+type ConstraintFunc func(rs *Recordset) error
+
+// MethodFunc is a callable business method on a model.
+// Mirrors: Odoo model methods called via RPC.
+type MethodFunc func(rs *Recordset, args ...interface{}) (interface{}, error)
+
+// AddConstraint registers a validation constraint.
+func (m *Model) AddConstraint(fn ConstraintFunc) *Model {
+	m.Constraints = append(m.Constraints, fn)
+	return m
+}
+
+// RegisterMethod registers a named business logic method on this model.
+// Mirrors: Odoo's method definitions on model classes.
+func (m *Model) RegisterMethod(name string, fn MethodFunc) *Model {
+	if m.Methods == nil {
+		m.Methods = make(map[string]MethodFunc)
+	}
+	m.Methods[name] = fn
+	return m
+}
+
+// Extend extends this model with additional fields (like _inherit in Odoo).
+// Mirrors: class MyModelExt(models.Model): _inherit = 'res.partner'
+func (m *Model) Extend(fields ...*Field) *Model {
+	for _, f := range fields {
+		m.AddField(f)
+	}
+	return m
+}
+
+// CreateTableSQL generates the CREATE TABLE statement for this model.
+// Mirrors: odoo/orm/models.py BaseModel._table_exist / init()
+func (m *Model) CreateTableSQL() string {
+	if !m.auto {
+		return ""
+	}
+
+	var cols []string
+	cols = append(cols, `"id" SERIAL PRIMARY KEY`)
+
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if name == "id" || !f.IsStored() {
+			continue
+		}
+
+		sqlType := f.SQLType()
+		if sqlType == "" {
+			continue
+		}
+
+		col := fmt.Sprintf("    %q %s", f.Column(), sqlType)
+		if f.Required {
+			col += " NOT NULL"
+		}
+		cols = append(cols, col)
+	}
+
+	return fmt.Sprintf("CREATE TABLE IF NOT EXISTS %q (\n%s\n)",
+		m.table,
+		strings.Join(cols, ",\n"),
+	)
+}
+
+// ForeignKeySQL generates ALTER TABLE statements for foreign keys.
+func (m *Model) ForeignKeySQL() []string {
+	var stmts []string
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if f.Type != TypeMany2one || f.Comodel == "" {
+			continue
+		}
+		if name == "create_uid" || name == "write_uid" {
+			continue // Skip magic fields, added later
+		}
+		comodel := Registry.Get(f.Comodel)
+		if comodel == nil {
+			continue
+		}
+		onDelete := "SET NULL"
+		switch f.OnDelete {
+		case OnDeleteRestrict:
+			onDelete = "RESTRICT"
+		case OnDeleteCascade:
+			onDelete = "CASCADE"
+		}
+		stmt := fmt.Sprintf(
+			`ALTER TABLE %q ADD CONSTRAINT %q FOREIGN KEY (%q) REFERENCES %q ("id") ON DELETE %s`,
+			m.table,
+			fmt.Sprintf("%s_%s_fkey", m.table, f.Column()),
+			f.Column(),
+			comodel.Table(),
+			onDelete,
+		)
+		stmts = append(stmts, stmt)
+	}
+	return stmts
+}
+
+// IndexSQL generates CREATE INDEX statements.
+func (m *Model) IndexSQL() []string {
+	var stmts []string
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if !f.Index || !f.IsStored() || name == "id" {
+			continue
+		}
+		stmt := fmt.Sprintf(
+			`CREATE INDEX IF NOT EXISTS %q ON %q (%q)`,
+			fmt.Sprintf("%s_%s_index", m.table, f.Column()),
+			m.table,
+			f.Column(),
+		)
+		stmts = append(stmts, stmt)
+	}
+	return stmts
+}
+
+// Many2manyTableSQL generates junction table DDL for Many2many fields.
+func (m *Model) Many2manyTableSQL() []string {
+	var stmts []string
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if f.Type != TypeMany2many {
+			continue
+		}
+
+		comodel := Registry.Get(f.Comodel)
+		if comodel == nil {
+			continue
+		}
+
+		// Determine junction table name.
+		// Mirrors: odoo/orm/fields_relational.py Many2many._table_name
+		relation := f.Relation
+		if relation == "" {
+			// Default: alphabetically sorted model tables joined by underscore
+			t1, t2 := m.table, comodel.Table()
+			if t1 > t2 {
+				t1, t2 = t2, t1
+			}
+			relation = fmt.Sprintf("%s_%s_rel", t1, t2)
+		}
+
+		col1 := f.Column1
+		if col1 == "" {
+			col1 = m.table + "_id"
+		}
+		col2 := f.Column2
+		if col2 == "" {
+			col2 = comodel.Table() + "_id"
+		}
+		// Self-referential M2M: ensure distinct column names
+		if col1 == col2 {
+			col1 = m.table + "_src_id"
+			col2 = m.table + "_dst_id"
+		}
+
+		stmt := fmt.Sprintf(
+			"CREATE TABLE IF NOT EXISTS %q (\n"+
+				"    %q integer NOT NULL REFERENCES %q(id) ON DELETE CASCADE,\n"+
+				"    %q integer NOT NULL REFERENCES %q(id) ON DELETE CASCADE,\n"+
+				"    PRIMARY KEY (%q, %q)\n"+
+				")",
+			relation, col1, m.table, col2, comodel.Table(), col1, col2,
+		)
+		stmts = append(stmts, stmt)
+	}
+	return stmts
+}

pkg/orm/recordset.go

@@ -0,0 +1,796 @@
+package orm
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Recordset represents an ordered set of records for a model.
+// Mirrors: odoo/orm/models.py BaseModel (which IS the recordset)
+//
+// In Odoo, a model instance IS a recordset. Every operation returns recordsets:
+//
+//	partners = self.env['res.partner'].search([('name', 'ilike', 'test')])
+//	for partner in partners:
+//	    print(partner.name)
+//
+// Go equivalent:
+//
+//	partners := env.Model("res.partner").Search(And(Leaf("name", "ilike", "test")))
+//	for _, rec := range partners.Records() {
+//	    fmt.Println(rec.Get("name"))
+//	}
+type Recordset struct {
+	env   *Environment
+	model *Model
+	ids   []int64
+}
+
+// Env returns the environment of this recordset.
+func (rs *Recordset) Env() *Environment { return rs.env }
+
+// Model returns the model of this recordset.
+func (rs *Recordset) ModelDef() *Model { return rs.model }
+
+// IDs returns the record IDs in this set.
+func (rs *Recordset) IDs() []int64 { return rs.ids }
+
+// Len returns the number of records.
+func (rs *Recordset) Len() int { return len(rs.ids) }
+
+// IsEmpty returns true if no records.
+func (rs *Recordset) IsEmpty() bool { return len(rs.ids) == 0 }
+
+// Ensure checks that this recordset contains exactly one record.
+// Mirrors: odoo.models.BaseModel.ensure_one()
+func (rs *Recordset) Ensure() error {
+	if len(rs.ids) != 1 {
+		return fmt.Errorf("orm: expected singleton, got %d records for %s", len(rs.ids), rs.model.name)
+	}
+	return nil
+}
+
+// ID returns the ID of a singleton recordset. Panics if not singleton.
+func (rs *Recordset) ID() int64 {
+	if err := rs.Ensure(); err != nil {
+		panic(err)
+	}
+	return rs.ids[0]
+}
+
+// Browse returns a recordset for the given IDs.
+// Mirrors: self.env['model'].browse([1, 2, 3])
+func (rs *Recordset) Browse(ids ...int64) *Recordset {
+	return &Recordset{
+		env:   rs.env,
+		model: rs.model,
+		ids:   ids,
+	}
+}
+
+// Sudo returns this recordset with superuser privileges.
+// Mirrors: records.sudo()
+func (rs *Recordset) Sudo() *Recordset {
+	return &Recordset{
+		env:   rs.env.Sudo(),
+		model: rs.model,
+		ids:   rs.ids,
+	}
+}
+
+// WithContext returns this recordset with additional context.
+func (rs *Recordset) WithContext(ctx map[string]interface{}) *Recordset {
+	return &Recordset{
+		env:   rs.env.WithContext(ctx),
+		model: rs.model,
+		ids:   rs.ids,
+	}
+}
+
+// --- CRUD Operations ---
+
+// Create creates a new record and returns a recordset containing it.
+// Mirrors: self.env['model'].create(vals)
+func (rs *Recordset) Create(vals Values) (*Recordset, error) {
+	m := rs.model
+
+	// Phase 1: Apply defaults for missing fields
+	ApplyDefaults(m, vals)
+
+	// Add magic fields
+	if rs.env.uid > 0 {
+		vals["create_uid"] = rs.env.uid
+		vals["write_uid"] = rs.env.uid
+	}
+
+	// Phase 2: BeforeCreate hook (e.g., sequence generation)
+	if m.BeforeCreate != nil {
+		if err := m.BeforeCreate(rs.env, vals); err != nil {
+			return nil, err
+		}
+	}
+
+	// Phase 1: Validate required fields
+	if err := ValidateRequired(m, vals, true); err != nil {
+		return nil, err
+	}
+
+	// Build INSERT statement
+	var columns []string
+	var placeholders []string
+	var args []interface{}
+	idx := 1
+
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if name == "id" || !f.IsStored() {
+			continue
+		}
+		val, exists := vals[name]
+		if !exists {
+			continue
+		}
+		columns = append(columns, fmt.Sprintf("%q", f.Column()))
+		placeholders = append(placeholders, fmt.Sprintf("$%d", idx))
+		args = append(args, val)
+		idx++
+	}
+
+	if len(columns) == 0 {
+		// Create with defaults only
+		columns = append(columns, `"create_date"`)
+		placeholders = append(placeholders, "NOW()")
+	}
+
+	query := fmt.Sprintf(
+		`INSERT INTO %q (%s) VALUES (%s) RETURNING "id"`,
+		m.table,
+		strings.Join(columns, ", "),
+		strings.Join(placeholders, ", "),
+	)
+
+	var id int64
+	err := rs.env.tx.QueryRow(rs.env.ctx, query, args...).Scan(&id)
+	if err != nil {
+		return nil, fmt.Errorf("orm: create %s: %w", m.name, err)
+	}
+
+	// Invalidate cache for this model
+	rs.env.cache.Invalidate(m.name)
+
+	// Process relational field commands (O2M/M2M)
+	if err := processRelationalCommands(rs.env, m, id, vals); err != nil {
+		return nil, err
+	}
+
+	// Run stored computed fields (after children exist for O2M-based computes)
+	if err := RunStoredComputes(m, rs.env, id, vals); err != nil {
+		return nil, err
+	}
+	// Write any newly computed values to the record
+	computedOnly := make(Values)
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if f.Compute != "" && f.Store {
+			if v, ok := vals[name]; ok {
+				computedOnly[name] = v
+			}
+		}
+	}
+	if len(computedOnly) > 0 {
+		if err := writeDirectNohook(rs.env, m, id, computedOnly); err != nil {
+			return nil, err
+		}
+	}
+
+	result := rs.Browse(id)
+
+	// Run constraints after record is fully created (with children + computes)
+	for _, constraint := range m.Constraints {
+		if err := constraint(result); err != nil {
+			return nil, err
+		}
+	}
+
+	return result, nil
+}
+
+// Write updates the records in this recordset.
+// Mirrors: records.write(vals)
+func (rs *Recordset) Write(vals Values) error {
+	if len(rs.ids) == 0 {
+		return nil
+	}
+
+	m := rs.model
+
+	var setClauses []string
+	var args []interface{}
+	idx := 1
+
+	// Add write metadata
+	if rs.env.uid > 0 {
+		vals["write_uid"] = rs.env.uid
+	}
+	vals["write_date"] = "NOW()" // Will be handled specially
+
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		if name == "id" || !f.IsStored() {
+			continue
+		}
+		val, exists := vals[name]
+		if !exists {
+			continue
+		}
+
+		if name == "write_date" {
+			setClauses = append(setClauses, `"write_date" = NOW()`)
+			continue
+		}
+
+		setClauses = append(setClauses, fmt.Sprintf("%q = $%d", f.Column(), idx))
+		args = append(args, val)
+		idx++
+	}
+
+	if len(setClauses) == 0 {
+		return nil
+	}
+
+	// Build WHERE clause for IDs
+	idPlaceholders := make([]string, len(rs.ids))
+	for i, id := range rs.ids {
+		args = append(args, id)
+		idPlaceholders[i] = fmt.Sprintf("$%d", idx)
+		idx++
+	}
+
+	query := fmt.Sprintf(
+		`UPDATE %q SET %s WHERE "id" IN (%s)`,
+		m.table,
+		strings.Join(setClauses, ", "),
+		strings.Join(idPlaceholders, ", "),
+	)
+
+	_, err := rs.env.tx.Exec(rs.env.ctx, query, args...)
+	if err != nil {
+		return fmt.Errorf("orm: write %s: %w", m.name, err)
+	}
+
+	// Invalidate cache
+	for _, id := range rs.ids {
+		rs.env.cache.InvalidateRecord(m.name, id)
+	}
+
+	// Process relational field commands (O2M/M2M) for each record
+	for _, id := range rs.ids {
+		if err := processRelationalCommands(rs.env, m, id, vals); err != nil {
+			return err
+		}
+	}
+
+	// Trigger recompute for stored computed fields that depend on written fields
+	if err := TriggerRecompute(rs, vals); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Unlink deletes the records in this recordset.
+// Mirrors: records.unlink()
+func (rs *Recordset) Unlink() error {
+	if len(rs.ids) == 0 {
+		return nil
+	}
+
+	m := rs.model
+
+	var args []interface{}
+	placeholders := make([]string, len(rs.ids))
+	for i, id := range rs.ids {
+		args = append(args, id)
+		placeholders[i] = fmt.Sprintf("$%d", i+1)
+	}
+
+	query := fmt.Sprintf(
+		`DELETE FROM %q WHERE "id" IN (%s)`,
+		m.table,
+		strings.Join(placeholders, ", "),
+	)
+
+	_, err := rs.env.tx.Exec(rs.env.ctx, query, args...)
+	if err != nil {
+		return fmt.Errorf("orm: unlink %s: %w", m.name, err)
+	}
+
+	// Invalidate cache
+	for _, id := range rs.ids {
+		rs.env.cache.InvalidateRecord(m.name, id)
+	}
+
+	return nil
+}
+
+// --- Read Operations ---
+
+// Read reads field values for the records in this recordset.
+// Mirrors: records.read(['field1', 'field2'])
+func (rs *Recordset) Read(fields []string) ([]Values, error) {
+	if len(rs.ids) == 0 {
+		return nil, nil
+	}
+
+	m := rs.model
+
+	// Resolve fields to column names
+	if len(fields) == 0 {
+		// Read all stored fields
+		for _, name := range m.fieldOrder {
+			f := m.fields[name]
+			if f.IsStored() {
+				fields = append(fields, name)
+			}
+		}
+	}
+
+	var columns []string
+	var storedFields []string    // Fields that come from the DB query
+	var m2mFields []string       // Many2many fields (from junction table)
+	var relatedFields []string   // Related fields (from joined table)
+
+	for _, name := range fields {
+		f := m.GetField(name)
+		if f == nil {
+			return nil, fmt.Errorf("orm: field %q not found on %s", name, m.name)
+		}
+		if f.Type == TypeMany2many {
+			m2mFields = append(m2mFields, name)
+		} else if f.Related != "" && !f.Store {
+			relatedFields = append(relatedFields, name)
+		} else if f.IsStored() {
+			columns = append(columns, fmt.Sprintf("%q", f.Column()))
+			storedFields = append(storedFields, name)
+		}
+	}
+
+	// Build query
+	var args []interface{}
+	idPlaceholders := make([]string, len(rs.ids))
+	for i, id := range rs.ids {
+		args = append(args, id)
+		idPlaceholders[i] = fmt.Sprintf("$%d", i+1)
+	}
+
+	query := fmt.Sprintf(
+		`SELECT %s FROM %q WHERE "id" IN (%s) ORDER BY %s`,
+		strings.Join(columns, ", "),
+		m.table,
+		strings.Join(idPlaceholders, ", "),
+		m.order,
+	)
+
+	rows, err := rs.env.tx.Query(rs.env.ctx, query, args...)
+	if err != nil {
+		return nil, fmt.Errorf("orm: read %s: %w", m.name, err)
+	}
+	defer rows.Close()
+
+	var results []Values
+	for rows.Next() {
+		scanDest := make([]interface{}, len(columns))
+		for i := range scanDest {
+			scanDest[i] = new(interface{})
+		}
+
+		if err := rows.Scan(scanDest...); err != nil {
+			return nil, fmt.Errorf("orm: scan %s: %w", m.name, err)
+		}
+
+		record := make(Values, len(fields))
+		for i, name := range storedFields {
+			val := *(scanDest[i].(*interface{}))
+			record[name] = val
+
+			// Update cache
+			if id, ok := record["id"].(int64); ok {
+				rs.env.cache.Set(m.name, id, name, val)
+			}
+		}
+		results = append(results, record)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	// Post-fetch: M2M fields (from junction tables)
+	if len(m2mFields) > 0 && len(rs.ids) > 0 {
+		for _, fname := range m2mFields {
+			f := m.GetField(fname)
+			if f == nil {
+				continue
+			}
+			m2mData, err := ReadM2MField(rs.env, f, rs.ids)
+			if err != nil {
+				return nil, fmt.Errorf("orm: read M2M %s.%s: %w", m.name, fname, err)
+			}
+			for _, rec := range results {
+				if id, ok := rec["id"].(int64); ok {
+					rec[fname] = m2mData[id]
+				} else if id, ok := rec["id"].(int32); ok {
+					rec[fname] = m2mData[int64(id)]
+				}
+			}
+		}
+	}
+
+	// Post-fetch: Related fields (follow M2O chain)
+	if len(relatedFields) > 0 {
+		for _, fname := range relatedFields {
+			f := m.GetField(fname)
+			if f == nil || f.Related == "" {
+				continue
+			}
+			parts := strings.Split(f.Related, ".")
+			if len(parts) != 2 {
+				continue // Only support single-hop related for now
+			}
+			fkField := parts[0]
+			targetField := parts[1]
+			fkDef := m.GetField(fkField)
+			if fkDef == nil || fkDef.Type != TypeMany2one {
+				continue
+			}
+			// Collect FK IDs from results
+			fkIDs := make(map[int64]bool)
+			for _, rec := range results {
+				if fkID, ok := toRecordID(rec[fkField]); ok && fkID > 0 {
+					fkIDs[fkID] = true
+				}
+			}
+			if len(fkIDs) == 0 {
+				for _, rec := range results {
+					rec[fname] = nil
+				}
+				continue
+			}
+			// Fetch related values
+			var ids []int64
+			for id := range fkIDs {
+				ids = append(ids, id)
+			}
+			comodelRS := rs.env.Model(fkDef.Comodel).Browse(ids...)
+			relatedData, err := comodelRS.Read([]string{"id", targetField})
+			if err != nil {
+				continue // Skip on error
+			}
+			lookup := make(map[int64]interface{})
+			for _, rd := range relatedData {
+				if id, ok := toRecordID(rd["id"]); ok {
+					lookup[id] = rd[targetField]
+				}
+			}
+			for _, rec := range results {
+				if fkID, ok := toRecordID(rec[fkField]); ok {
+					rec[fname] = lookup[fkID]
+				} else {
+					rec[fname] = nil
+				}
+			}
+		}
+	}
+
+	return results, nil
+}
+
+// Get reads a single field value from a singleton record.
+// Mirrors: record.field_name (Python attribute access)
+func (rs *Recordset) Get(field string) (Value, error) {
+	if err := rs.Ensure(); err != nil {
+		return nil, err
+	}
+
+	// Check cache first
+	if val, ok := rs.env.cache.Get(rs.model.name, rs.ids[0], field); ok {
+		return val, nil
+	}
+
+	// Read from database
+	records, err := rs.Read([]string{field})
+	if err != nil {
+		return nil, err
+	}
+	if len(records) == 0 {
+		return nil, fmt.Errorf("orm: record %s(%d) not found", rs.model.name, rs.ids[0])
+	}
+
+	return records[0][field], nil
+}
+
+// --- Search Operations ---
+
+// Search searches for records matching the domain.
+// Mirrors: self.env['model'].search(domain, offset=0, limit=None, order=None)
+func (rs *Recordset) Search(domain Domain, opts ...SearchOpts) (*Recordset, error) {
+	m := rs.model
+	opt := mergeSearchOpts(opts)
+
+	// Apply record rules (e.g., multi-company filter)
+	domain = ApplyRecordRules(rs.env, m, domain)
+
+	// Compile domain to SQL
+	compiler := &DomainCompiler{model: m}
+	where, params, err := compiler.Compile(domain)
+	if err != nil {
+		return nil, fmt.Errorf("orm: search %s: %w", m.name, err)
+	}
+
+	// Build query
+	order := m.order
+	if opt.Order != "" {
+		order = opt.Order
+	}
+
+	joinSQL := compiler.JoinSQL()
+	// Qualify ORDER BY columns with table name when JOINs are present
+	qualifiedOrder := order
+	if joinSQL != "" {
+		qualifiedOrder = qualifyOrderBy(m.table, order)
+	}
+	query := fmt.Sprintf(
+		`SELECT %q."id" FROM %q%s WHERE %s ORDER BY %s`,
+		m.table, m.table, joinSQL, where, qualifiedOrder,
+	)
+
+	if opt.Limit > 0 {
+		query += fmt.Sprintf(" LIMIT %d", opt.Limit)
+	}
+	if opt.Offset > 0 {
+		query += fmt.Sprintf(" OFFSET %d", opt.Offset)
+	}
+
+	rows, err := rs.env.tx.Query(rs.env.ctx, query, params...)
+	if err != nil {
+		return nil, fmt.Errorf("orm: search %s: %w", m.name, err)
+	}
+	defer rows.Close()
+
+	var ids []int64
+	for rows.Next() {
+		var id int64
+		if err := rows.Scan(&id); err != nil {
+			return nil, fmt.Errorf("orm: search scan %s: %w", m.name, err)
+		}
+		ids = append(ids, id)
+	}
+
+	return rs.Browse(ids...), rows.Err()
+}
+
+// SearchCount returns the number of records matching the domain.
+// Mirrors: self.env['model'].search_count(domain)
+func (rs *Recordset) SearchCount(domain Domain) (int64, error) {
+	m := rs.model
+
+	compiler := &DomainCompiler{model: m}
+	where, params, err := compiler.Compile(domain)
+	if err != nil {
+		return 0, fmt.Errorf("orm: search_count %s: %w", m.name, err)
+	}
+
+	joinSQL := compiler.JoinSQL()
+	query := fmt.Sprintf(`SELECT COUNT(*) FROM %q%s WHERE %s`, m.table, joinSQL, where)
+
+	var count int64
+	err = rs.env.tx.QueryRow(rs.env.ctx, query, params...).Scan(&count)
+	if err != nil {
+		return 0, fmt.Errorf("orm: search_count %s: %w", m.name, err)
+	}
+
+	return count, nil
+}
+
+// SearchRead combines search and read in one call.
+// Mirrors: self.env['model'].search_read(domain, fields, offset, limit, order)
+func (rs *Recordset) SearchRead(domain Domain, fields []string, opts ...SearchOpts) ([]Values, error) {
+	found, err := rs.Search(domain, opts...)
+	if err != nil {
+		return nil, err
+	}
+	if found.IsEmpty() {
+		return nil, nil
+	}
+	return found.Read(fields)
+}
+
+// NameGet returns display names for the records.
+// Mirrors: records.name_get()
+func (rs *Recordset) NameGet() (map[int64]string, error) {
+	if len(rs.ids) == 0 {
+		return nil, nil
+	}
+
+	recName := rs.model.recName
+	records, err := rs.Read([]string{"id", recName})
+	if err != nil {
+		return nil, err
+	}
+
+	result := make(map[int64]string, len(records))
+	for _, rec := range records {
+		id, _ := rec["id"].(int64)
+		name, _ := rec[recName].(string)
+		result[id] = name
+	}
+	return result, nil
+}
+
+// Exists filters this recordset to only records that exist in the database.
+// Mirrors: records.exists()
+func (rs *Recordset) Exists() (*Recordset, error) {
+	if len(rs.ids) == 0 {
+		return rs, nil
+	}
+
+	m := rs.model
+	var args []interface{}
+	placeholders := make([]string, len(rs.ids))
+	for i, id := range rs.ids {
+		args = append(args, id)
+		placeholders[i] = fmt.Sprintf("$%d", i+1)
+	}
+
+	query := fmt.Sprintf(
+		`SELECT "id" FROM %q WHERE "id" IN (%s)`,
+		m.table,
+		strings.Join(placeholders, ", "),
+	)
+
+	rows, err := rs.env.tx.Query(rs.env.ctx, query, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var existing []int64
+	for rows.Next() {
+		var id int64
+		if err := rows.Scan(&id); err != nil {
+			return nil, err
+		}
+		existing = append(existing, id)
+	}
+
+	return rs.Browse(existing...), rows.Err()
+}
+
+// Records returns individual singleton recordsets for iteration.
+// Mirrors: for record in records: ...
+func (rs *Recordset) Records() []*Recordset {
+	result := make([]*Recordset, len(rs.ids))
+	for i, id := range rs.ids {
+		result[i] = rs.Browse(id)
+	}
+	return result
+}
+
+// Union returns the union of this recordset with others.
+// Mirrors: records | other_records
+func (rs *Recordset) Union(others ...*Recordset) *Recordset {
+	seen := make(map[int64]bool)
+	var ids []int64
+	for _, id := range rs.ids {
+		if !seen[id] {
+			seen[id] = true
+			ids = append(ids, id)
+		}
+	}
+	for _, other := range others {
+		for _, id := range other.ids {
+			if !seen[id] {
+				seen[id] = true
+				ids = append(ids, id)
+			}
+		}
+	}
+	return rs.Browse(ids...)
+}
+
+// Subtract returns records in this set but not in the other.
+// Mirrors: records - other_records
+func (rs *Recordset) Subtract(other *Recordset) *Recordset {
+	exclude := make(map[int64]bool)
+	for _, id := range other.ids {
+		exclude[id] = true
+	}
+	var ids []int64
+	for _, id := range rs.ids {
+		if !exclude[id] {
+			ids = append(ids, id)
+		}
+	}
+	return rs.Browse(ids...)
+}
+
+// --- Search Options ---
+
+// SearchOpts configures a search operation.
+type SearchOpts struct {
+	Offset int
+	Limit  int
+	Order  string
+}
+
+func mergeSearchOpts(opts []SearchOpts) SearchOpts {
+	if len(opts) == 0 {
+		return SearchOpts{}
+	}
+	return opts[0]
+}
+
+// toRecordID extracts an int64 ID from various types PostgreSQL might return.
+func toRecordID(v interface{}) (int64, bool) {
+	switch n := v.(type) {
+	case int64:
+		return n, true
+	case int32:
+		return int64(n), true
+	case int:
+		return int64(n), true
+	case float64:
+		return int64(n), true
+	}
+	return 0, false
+}
+
+// qualifyOrderBy prefixes unqualified column names with the table name.
+// "name, id desc" → "\"my_table\".name, \"my_table\".id desc"
+func qualifyOrderBy(table, order string) string {
+	parts := strings.Split(order, ",")
+	for i, part := range parts {
+		part = strings.TrimSpace(part)
+		tokens := strings.Fields(part)
+		if len(tokens) == 0 {
+			continue
+		}
+		col := tokens[0]
+		// Skip already qualified columns
+		if strings.Contains(col, ".") {
+			continue
+		}
+		tokens[0] = fmt.Sprintf("%q.%s", table, col)
+		parts[i] = strings.Join(tokens, " ")
+	}
+	return strings.Join(parts, ", ")
+}
+
+// --- Relational Command Processing ---
+
+// processRelationalCommands handles O2M/M2M commands in vals after a Create or Write.
+func processRelationalCommands(env *Environment, m *Model, parentID int64, vals Values) error {
+	for _, name := range m.fieldOrder {
+		f := m.fields[name]
+		raw, exists := vals[name]
+		if !exists {
+			continue
+		}
+
+		cmds, ok := ParseCommands(raw)
+		if !ok {
+			continue
+		}
+
+		switch f.Type {
+		case TypeOne2many:
+			if err := ProcessO2MCommands(env, f, parentID, cmds); err != nil {
+				return err
+			}
+		case TypeMany2many:
+			if err := ProcessM2MCommands(env, f, parentID, cmds); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}

pkg/orm/relational.go

@@ -0,0 +1,282 @@
+package orm
+
+import (
+	"fmt"
+	"strings"
+)
+
+// ProcessO2MCommands processes One2many field commands after a Create/Write.
+// Mirrors: odoo/orm/fields_relational.py One2many write logic
+//
+// Commands:
+//
+//	CmdCreate(vals)     → Create child record with inverse_field = parentID
+//	CmdUpdate(id, vals) → Update child record
+//	CmdDelete(id)       → Delete child record
+func ProcessO2MCommands(env *Environment, f *Field, parentID int64, cmds []Command) error {
+	if f.Comodel == "" || f.InverseField == "" {
+		return fmt.Errorf("orm: O2M field %q missing comodel or inverse_field", f.Name)
+	}
+
+	comodelRS := env.Model(f.Comodel)
+
+	for _, cmd := range cmds {
+		switch cmd.Operation {
+		case CommandCreate:
+			vals := cmd.Values
+			if vals == nil {
+				vals = make(Values)
+			}
+			vals[f.InverseField] = parentID
+			if _, err := comodelRS.Create(vals); err != nil {
+				return fmt.Errorf("orm: O2M create on %s: %w", f.Comodel, err)
+			}
+
+		case CommandUpdate:
+			if cmd.ID <= 0 {
+				continue
+			}
+			if err := comodelRS.Browse(cmd.ID).Write(cmd.Values); err != nil {
+				return fmt.Errorf("orm: O2M update %s(%d): %w", f.Comodel, cmd.ID, err)
+			}
+
+		case CommandDelete:
+			if cmd.ID <= 0 {
+				continue
+			}
+			if err := comodelRS.Browse(cmd.ID).Unlink(); err != nil {
+				return fmt.Errorf("orm: O2M delete %s(%d): %w", f.Comodel, cmd.ID, err)
+			}
+
+		case CommandClear:
+			// Delete all children linked to this parent
+			children, err := comodelRS.Search(And(Leaf(f.InverseField, "=", parentID)))
+			if err != nil {
+				return err
+			}
+			if err := children.Unlink(); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+// ProcessM2MCommands processes Many2many field commands after a Create/Write.
+// Mirrors: odoo/orm/fields_relational.py Many2many write logic
+//
+// Commands:
+//
+//	CmdLink(id)    → Add link in junction table
+//	CmdUnlink(id)  → Remove link from junction table
+//	CmdClear()     → Remove all links
+//	CmdSet(ids)    → Replace all links
+//	CmdCreate(vals) → Create comodel record then link it
+func ProcessM2MCommands(env *Environment, f *Field, parentID int64, cmds []Command) error {
+	jt := f.JunctionTable()
+	col1 := f.JunctionCol1()
+	col2 := f.JunctionCol2()
+
+	if jt == "" || col1 == "" || col2 == "" {
+		return fmt.Errorf("orm: M2M field %q: cannot determine junction table", f.Name)
+	}
+
+	for _, cmd := range cmds {
+		switch cmd.Operation {
+		case CommandLink:
+			_, err := env.tx.Exec(env.ctx, fmt.Sprintf(
+				`INSERT INTO %q (%q, %q) VALUES ($1, $2) ON CONFLICT DO NOTHING`,
+				jt, col1, col2,
+			), parentID, cmd.ID)
+			if err != nil {
+				return fmt.Errorf("orm: M2M link %s: %w", f.Name, err)
+			}
+
+		case CommandUnlink:
+			_, err := env.tx.Exec(env.ctx, fmt.Sprintf(
+				`DELETE FROM %q WHERE %q = $1 AND %q = $2`,
+				jt, col1, col2,
+			), parentID, cmd.ID)
+			if err != nil {
+				return fmt.Errorf("orm: M2M unlink %s: %w", f.Name, err)
+			}
+
+		case CommandClear:
+			_, err := env.tx.Exec(env.ctx, fmt.Sprintf(
+				`DELETE FROM %q WHERE %q = $1`,
+				jt, col1,
+			), parentID)
+			if err != nil {
+				return fmt.Errorf("orm: M2M clear %s: %w", f.Name, err)
+			}
+
+		case CommandSet:
+			// Clear then link all
+			if _, err := env.tx.Exec(env.ctx, fmt.Sprintf(
+				`DELETE FROM %q WHERE %q = $1`,
+				jt, col1,
+			), parentID); err != nil {
+				return err
+			}
+			for _, targetID := range cmd.IDs {
+				if _, err := env.tx.Exec(env.ctx, fmt.Sprintf(
+					`INSERT INTO %q (%q, %q) VALUES ($1, $2) ON CONFLICT DO NOTHING`,
+					jt, col1, col2,
+				), parentID, targetID); err != nil {
+					return err
+				}
+			}
+
+		case CommandCreate:
+			// Create comodel record then link
+			comodelRS := env.Model(f.Comodel)
+			created, err := comodelRS.Create(cmd.Values)
+			if err != nil {
+				return err
+			}
+			if _, err := env.tx.Exec(env.ctx, fmt.Sprintf(
+				`INSERT INTO %q (%q, %q) VALUES ($1, $2) ON CONFLICT DO NOTHING`,
+				jt, col1, col2,
+			), parentID, created.ID()); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+// ReadM2MField reads the linked IDs for a Many2many field.
+func ReadM2MField(env *Environment, f *Field, parentIDs []int64) (map[int64][]int64, error) {
+	jt := f.JunctionTable()
+	col1 := f.JunctionCol1()
+	col2 := f.JunctionCol2()
+
+	if jt == "" {
+		return nil, nil
+	}
+
+	placeholders := make([]string, len(parentIDs))
+	args := make([]interface{}, len(parentIDs))
+	for i, id := range parentIDs {
+		args[i] = id
+		placeholders[i] = fmt.Sprintf("$%d", i+1)
+	}
+
+	query := fmt.Sprintf(
+		`SELECT %q, %q FROM %q WHERE %q IN (%s)`,
+		col1, col2, jt, col1, strings.Join(placeholders, ", "),
+	)
+
+	rows, err := env.tx.Query(env.ctx, query, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	result := make(map[int64][]int64)
+	for rows.Next() {
+		var pid, tid int64
+		if err := rows.Scan(&pid, &tid); err != nil {
+			return nil, err
+		}
+		result[pid] = append(result[pid], tid)
+	}
+	return result, rows.Err()
+}
+
+// ParseCommands converts a JSON value to a slice of Commands.
+// JSON format: [[0, 0, {vals}], [4, id, 0], [6, 0, [ids]], ...]
+func ParseCommands(raw interface{}) ([]Command, bool) {
+	list, ok := raw.([]interface{})
+	if !ok || len(list) == 0 {
+		return nil, false
+	}
+
+	// Check if this looks like commands (list of lists)
+	first, ok := list[0].([]interface{})
+	if !ok {
+		return nil, false
+	}
+	if len(first) < 2 {
+		return nil, false
+	}
+
+	var cmds []Command
+	for _, item := range list {
+		tuple, ok := item.([]interface{})
+		if !ok || len(tuple) < 2 {
+			continue
+		}
+
+		op, ok := toInt64(tuple[0])
+		if !ok {
+			continue
+		}
+
+		switch CommandOp(op) {
+		case CommandCreate: // [0, _, {vals}]
+			vals := make(Values)
+			if len(tuple) > 2 {
+				if m, ok := tuple[2].(map[string]interface{}); ok {
+					vals = m
+				}
+			}
+			cmds = append(cmds, CmdCreate(vals))
+
+		case CommandUpdate: // [1, id, {vals}]
+			id, _ := toInt64(tuple[1])
+			vals := make(Values)
+			if len(tuple) > 2 {
+				if m, ok := tuple[2].(map[string]interface{}); ok {
+					vals = m
+				}
+			}
+			cmds = append(cmds, CmdUpdate(id, vals))
+
+		case CommandDelete: // [2, id, _]
+			id, _ := toInt64(tuple[1])
+			cmds = append(cmds, CmdDelete(id))
+
+		case CommandUnlink: // [3, id, _]
+			id, _ := toInt64(tuple[1])
+			cmds = append(cmds, CmdUnlink(id))
+
+		case CommandLink: // [4, id, _]
+			id, _ := toInt64(tuple[1])
+			cmds = append(cmds, CmdLink(id))
+
+		case CommandClear: // [5, _, _]
+			cmds = append(cmds, CmdClear())
+
+		case CommandSet: // [6, _, [ids]]
+			var ids []int64
+			if len(tuple) > 2 {
+				if arr, ok := tuple[2].([]interface{}); ok {
+					for _, v := range arr {
+						if id, ok := toInt64(v); ok {
+							ids = append(ids, id)
+						}
+					}
+				}
+			}
+			cmds = append(cmds, CmdSet(ids))
+		}
+	}
+
+	if len(cmds) == 0 {
+		return nil, false
+	}
+	return cmds, true
+}
+
+func toInt64(v interface{}) (int64, bool) {
+	switch n := v.(type) {
+	case float64:
+		return int64(n), true
+	case int64:
+		return n, true
+	case int:
+		return int64(n), true
+	}
+	return 0, false
+}

pkg/orm/rules.go

@@ -0,0 +1,82 @@
+package orm
+
+import "fmt"
+
+// ApplyRecordRules adds ir.rule domain filters to a search.
+// Mirrors: odoo/addons/base/models/ir_rule.py IrRule._compute_domain()
+//
+// Rules work as follows:
+// - Global rules (no groups) are AND-ed together
+// - Group rules are OR-ed within the group set
+// - The final domain is: global_rules AND (group_rule_1 OR group_rule_2 OR ...)
+//
+// For the initial implementation, we support company-based record rules:
+// Records with a company_id field are filtered to the user's company.
+func ApplyRecordRules(env *Environment, m *Model, domain Domain) Domain {
+	if env.su {
+		return domain // Superuser bypasses record rules
+	}
+
+	// Auto-apply company filter if model has company_id
+	// Records where company_id = user's company OR company_id IS NULL (shared records)
+	if f := m.GetField("company_id"); f != nil && f.Type == TypeMany2one {
+		myCompany := Leaf("company_id", "=", env.CompanyID())
+		noCompany := Leaf("company_id", "=", nil)
+		companyFilter := Or(myCompany, noCompany)
+		if len(domain) == 0 {
+			return companyFilter
+		}
+		// AND the company filter with existing domain
+		result := Domain{OpAnd}
+		result = append(result, domain...)
+		// Wrap company filter in the domain
+		result = append(result, companyFilter...)
+		return result
+	}
+
+	// TODO: Load custom ir.rule records from DB and compile their domains
+	// For now, only the built-in company filter is applied
+
+	return domain
+}
+
+// CheckRecordRuleAccess verifies the user can access specific record IDs.
+// Returns an error if any record is not accessible.
+func CheckRecordRuleAccess(env *Environment, m *Model, ids []int64, perm string) error {
+	if env.su || len(ids) == 0 {
+		return nil
+	}
+
+	// Check company_id if the model has it
+	f := m.GetField("company_id")
+	if f == nil || f.Type != TypeMany2one {
+		return nil
+	}
+
+	// Count records that match the company filter
+	placeholders := make([]string, len(ids))
+	args := make([]interface{}, len(ids))
+	for i, id := range ids {
+		args[i] = id
+		placeholders[i] = fmt.Sprintf("$%d", i+1)
+	}
+	args = append(args, env.CompanyID())
+
+	query := fmt.Sprintf(
+		`SELECT COUNT(*) FROM %q WHERE "id" IN (%s) AND ("company_id" = $%d OR "company_id" IS NULL)`,
+		m.Table(),
+		joinStrings(placeholders, ", "),
+		len(ids)+1,
+	)
+
+	var count int64
+	err := env.tx.QueryRow(env.ctx, query, args...).Scan(&count)
+	if err != nil {
+		return nil // Fail open on error
+	}
+
+	if count < int64(len(ids)) {
+		return fmt.Errorf("orm: access denied by record rules on %s (company filter)", m.Name())
+	}
+	return nil
+}

pkg/orm/sequence.go

@@ -0,0 +1,69 @@
+package orm
+
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
+// NextByCode generates the next value for a sequence identified by its code.
+// Mirrors: odoo/addons/base/models/ir_sequence.py IrSequence.next_by_code()
+//
+// Uses PostgreSQL FOR UPDATE to ensure atomic increment under concurrency.
+// Format: prefix + LPAD(number, padding, '0') + suffix
+// Supports date interpolation in prefix/suffix: %(year)s, %(month)s, %(day)s
+func NextByCode(env *Environment, code string) (string, error) {
+	var id int64
+	var prefix, suffix string
+	var numberNext, numberIncrement, padding int
+
+	err := env.tx.QueryRow(env.ctx, `
+		SELECT id, COALESCE(prefix, ''), COALESCE(suffix, ''), number_next, number_increment, padding
+		FROM ir_sequence
+		WHERE code = $1 AND active = true
+		ORDER BY id
+		LIMIT 1
+		FOR UPDATE
+	`, code).Scan(&id, &prefix, &suffix, &numberNext, &numberIncrement, &padding)
+
+	if err != nil {
+		return "", fmt.Errorf("orm: sequence %q not found: %w", code, err)
+	}
+
+	// Format the sequence value
+	result := FormatSequence(prefix, suffix, numberNext, padding)
+
+	// Increment for next call
+	_, err = env.tx.Exec(env.ctx, `
+		UPDATE ir_sequence SET number_next = number_next + $1 WHERE id = $2
+	`, numberIncrement, id)
+	if err != nil {
+		return "", fmt.Errorf("orm: sequence %q increment failed: %w", code, err)
+	}
+
+	return result, nil
+}
+
+// FormatSequence formats a sequence number with prefix, suffix, and zero-padding.
+func FormatSequence(prefix, suffix string, number, padding int) string {
+	prefix = InterpolateDate(prefix)
+	suffix = InterpolateDate(suffix)
+
+	numStr := fmt.Sprintf("%d", number)
+	if padding > 0 && len(numStr) < padding {
+		numStr = strings.Repeat("0", padding-len(numStr)) + numStr
+	}
+
+	return prefix + numStr + suffix
+}
+
+// InterpolateDate replaces Odoo-style date placeholders in a string.
+// Supports: %(year)s, %(month)s, %(day)s, %(y)s (2-digit year)
+func InterpolateDate(s string) string {
+	now := time.Now()
+	s = strings.ReplaceAll(s, "%(year)s", now.Format("2006"))
+	s = strings.ReplaceAll(s, "%(y)s", now.Format("06"))
+	s = strings.ReplaceAll(s, "%(month)s", now.Format("01"))
+	s = strings.ReplaceAll(s, "%(day)s", now.Format("02"))
+	return s
+}

pkg/orm/types.go

@@ -0,0 +1,209 @@
+// Package orm implements the Odoo ORM in Go.
+// Mirrors: odoo/orm/models.py, odoo/orm/fields.py
+package orm
+
+import (
+	"fmt"
+	"sync"
+	"time"
+)
+
+// FieldType mirrors Odoo's field type system.
+// See: odoo/orm/fields.py
+type FieldType int
+
+const (
+	TypeChar FieldType = iota
+	TypeText
+	TypeHTML
+	TypeInteger
+	TypeFloat
+	TypeMonetary
+	TypeBoolean
+	TypeDate
+	TypeDatetime
+	TypeBinary
+	TypeSelection
+	TypeJson
+	TypeMany2one
+	TypeOne2many
+	TypeMany2many
+	TypeReference
+	TypeProperties
+)
+
+func (ft FieldType) String() string {
+	names := [...]string{
+		"char", "text", "html", "integer", "float", "monetary",
+		"boolean", "date", "datetime", "binary", "selection",
+		"json", "many2one", "one2many", "many2many", "reference", "properties",
+	}
+	if int(ft) < len(names) {
+		return names[ft]
+	}
+	return fmt.Sprintf("unknown(%d)", ft)
+}
+
+// SQLType returns the PostgreSQL column type for this field type.
+// Mirrors: odoo/orm/fields.py column_type property
+func (ft FieldType) SQLType() string {
+	switch ft {
+	case TypeChar:
+		return "varchar"
+	case TypeText, TypeHTML:
+		return "text"
+	case TypeInteger:
+		return "int4"
+	case TypeFloat:
+		return "numeric"
+	case TypeMonetary:
+		return "numeric"
+	case TypeBoolean:
+		return "bool"
+	case TypeDate:
+		return "date"
+	case TypeDatetime:
+		return "timestamp without time zone"
+	case TypeBinary:
+		return "bytea"
+	case TypeSelection:
+		return "varchar"
+	case TypeJson, TypeProperties:
+		return "jsonb"
+	case TypeMany2one:
+		return "int4"
+	case TypeReference:
+		return "varchar"
+	case TypeOne2many, TypeMany2many:
+		return "" // no column, computed
+	default:
+		return ""
+	}
+}
+
+// IsRelational returns true for relational field types.
+func (ft FieldType) IsRelational() bool {
+	return ft == TypeMany2one || ft == TypeOne2many || ft == TypeMany2many
+}
+
+// IsStored returns true if this field type has a database column.
+func (ft FieldType) IsStored() bool {
+	return ft != TypeOne2many && ft != TypeMany2many
+}
+
+// ModelType mirrors Odoo's model categories.
+// See: odoo/orm/models.py BaseModel._auto
+type ModelType int
+
+const (
+	// ModelRegular corresponds to odoo.models.Model (_auto=True, _abstract=False)
+	ModelRegular ModelType = iota
+	// ModelTransient corresponds to odoo.models.TransientModel (_transient=True)
+	ModelTransient
+	// ModelAbstract corresponds to odoo.models.AbstractModel (_auto=False, _abstract=True)
+	ModelAbstract
+)
+
+// OnDelete mirrors Odoo's ondelete parameter for Many2one fields.
+// See: odoo/orm/fields_relational.py Many2one.ondelete
+type OnDelete string
+
+const (
+	OnDeleteSetNull  OnDelete = "set null"
+	OnDeleteRestrict OnDelete = "restrict"
+	OnDeleteCascade  OnDelete = "cascade"
+)
+
+// Value represents any value that can be stored in or read from a field.
+// Mirrors Odoo's dynamic typing for field values.
+type Value interface{}
+
+// Values is a map of field names to values, used for create/write operations.
+// Mirrors Odoo's vals dict passed to create() and write().
+type Values = map[string]interface{}
+
+// SelectionItem represents one option in a Selection field.
+// Mirrors: odoo/orm/fields.py Selection.selection items
+type SelectionItem struct {
+	Value string
+	Label string
+}
+
+// NullTime wraps time.Time to handle NULL dates from PostgreSQL.
+type NullTime struct {
+	Time  time.Time
+	Valid bool
+}
+
+// NullInt wraps int64 to handle NULL integers (e.g., Many2one FK).
+type NullInt struct {
+	Int64 int64
+	Valid bool
+}
+
+// NullString wraps string to handle NULL text fields.
+type NullString struct {
+	String string
+	Valid  bool
+}
+
+// Registry is the global model registry.
+// Mirrors: odoo/orm/registry.py Registry
+// Holds all registered models, keyed by model name (e.g., "res.partner").
+var Registry = &ModelRegistry{
+	models: make(map[string]*Model),
+}
+
+// ModelRegistry manages all model definitions.
+// Thread-safe for concurrent module loading.
+type ModelRegistry struct {
+	mu     sync.RWMutex
+	models map[string]*Model
+	loaded bool
+}
+
+// Get returns a model by name, or nil if not found.
+func (r *ModelRegistry) Get(name string) *Model {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	return r.models[name]
+}
+
+// MustGet returns a model by name, panics if not found.
+func (r *ModelRegistry) MustGet(name string) *Model {
+	m := r.Get(name)
+	if m == nil {
+		panic(fmt.Sprintf("orm: model %q not registered", name))
+	}
+	return m
+}
+
+// Register adds a model to the registry.
+func (r *ModelRegistry) Register(m *Model) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.models[m.name] = m
+}
+
+// All returns all registered model names.
+func (r *ModelRegistry) All() []string {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	names := make([]string, 0, len(r.models))
+	for name := range r.models {
+		names = append(names, name)
+	}
+	return names
+}
+
+// Models returns all registered models.
+func (r *ModelRegistry) Models() map[string]*Model {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	// Return a copy to avoid race conditions
+	result := make(map[string]*Model, len(r.models))
+	for k, v := range r.models {
+		result[k] = v
+	}
+	return result
+}

pkg/server/action.go

@@ -0,0 +1,47 @@
+package server
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+// handleActionLoad loads an action definition by ID.
+// Mirrors: odoo/addons/web/controllers/action.py Action.load()
+func (s *Server) handleActionLoad(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req JSONRPCRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		s.writeJSONRPC(w, nil, nil, &RPCError{Code: -32700, Message: "Parse error"})
+		return
+	}
+
+	var params struct {
+		ActionID interface{} `json:"action_id"`
+		Context  interface{} `json:"context"`
+	}
+	json.Unmarshal(req.Params, &params)
+
+	// For now, return the Contacts action for any request
+	// TODO: Load from ir_act_window table
+	action := map[string]interface{}{
+		"id":             1,
+		"type":           "ir.actions.act_window",
+		"name":           "Contacts",
+		"res_model":      "res.partner",
+		"view_mode":      "list,form",
+		"views":          [][]interface{}{{nil, "list"}, {nil, "form"}},
+		"search_view_id": false,
+		"domain":         "[]",
+		"context":        "{}",
+		"target":         "current",
+		"limit":          80,
+		"help":           "",
+		"xml_id":         "contacts.action_contacts",
+	}
+
+	s.writeJSONRPC(w, req.ID, action, nil)
+}

pkg/server/assets_css.txt

@@ -0,0 +1,216 @@
+/web/static/lib/bootstrap/scss/_functions.scss
+/web/static/lib/bootstrap/scss/_mixins.scss
+/web/static/src/scss/functions.scss
+/web/static/src/scss/mixins_forwardport.scss
+/web/static/src/scss/bs_mixins_overrides.scss
+/web/static/src/scss/utils.scss
+/web/static/src/scss/primary_variables.scss
+/web/static/src/core/avatar/avatar.variables.scss
+/web/static/src/core/bottom_sheet/bottom_sheet.variables.scss
+/web/static/src/core/notifications/notification.variables.scss
+/web/static/src/search/control_panel/control_panel.variables.scss
+/web/static/src/search/search_bar/search_bar.variables.scss
+/web/static/src/search/search_panel/search_panel.variables.scss
+/web/static/src/views/fields/statusbar/statusbar_field.variables.scss
+/web/static/src/views/fields/translation_button.variables.scss
+/web/static/src/views/form/form.variables.scss
+/web/static/src/views/kanban/kanban.variables.scss
+/web/static/src/webclient/burger_menu/burger_menu.variables.scss
+/web/static/src/webclient/navbar/navbar.variables.scss
+/web/static/src/scss/secondary_variables.scss
+/web/static/src/scss/bootstrap_overridden.scss
+/web/static/src/scss/bs_mixins_overrides_backend.scss
+/web/static/src/scss/pre_variables.scss
+/web/static/lib/bootstrap/scss/_variables.scss
+/web/static/lib/bootstrap/scss/_variables-dark.scss
+/web/static/lib/bootstrap/scss/_maps.scss
+/web/static/src/scss/import_bootstrap.scss
+/web/static/src/scss/utilities_custom.scss
+/web/static/lib/bootstrap/scss/utilities/_api.scss
+/web/static/src/scss/bootstrap_review.scss
+/web/static/src/scss/bootstrap_review_backend.scss
+/web/static/src/core/utils/transitions.scss
+/web/static/src/core/action_swiper/action_swiper.scss
+/web/static/src/core/autocomplete/autocomplete.scss
+/web/static/src/core/avatar/avatar.scss
+/web/static/src/core/avatar/avatar.variables.scss
+/web/static/src/core/badge/badge.scss
+/web/static/src/core/barcode/barcode_dialog.scss
+/web/static/src/core/barcode/crop_overlay.scss
+/web/static/src/core/bottom_sheet/bottom_sheet.scss
+/web/static/src/core/bottom_sheet/bottom_sheet.variables.scss
+/web/static/src/core/checkbox/checkbox.scss
+/web/static/src/core/color_picker/color_picker.scss
+/web/static/src/core/color_picker/custom_color_picker/custom_color_picker.scss
+/web/static/src/core/colorlist/colorlist.scss
+/web/static/src/core/commands/command_palette.scss
+/web/static/src/core/datetime/datetime_picker.scss
+/web/static/src/core/debug/debug_menu.scss
+/web/static/src/core/dialog/dialog.scss
+/web/static/src/core/dropdown/accordion_item.scss
+/web/static/src/core/dropdown/dropdown.scss
+/web/static/src/core/dropzone/dropzone.scss
+/web/static/src/core/effects/rainbow_man.scss
+/web/static/src/core/emoji_picker/emoji_picker.dark.scss
+/web/static/src/core/emoji_picker/emoji_picker.scss
+/web/static/src/core/errors/error_dialog.scss
+/web/static/src/core/file_upload/file_upload_progress_bar.scss
+/web/static/src/core/file_upload/file_upload_progress_record.scss
+/web/static/src/core/file_viewer/file_viewer.dark.scss
+/web/static/src/core/file_viewer/file_viewer.scss
+/web/static/src/core/ir_ui_view_code_editor/code_editor.scss
+/web/static/src/core/model_field_selector/model_field_selector.scss
+/web/static/src/core/model_field_selector/model_field_selector_popover.scss
+/web/static/src/core/model_selector/model_selector.scss
+/web/static/src/core/notebook/notebook.scss
+/web/static/src/core/notifications/notification.scss
+/web/static/src/core/notifications/notification.variables.scss
+/web/static/src/core/overlay/overlay_container.scss
+/web/static/src/core/pager/pager_indicator.scss
+/web/static/src/core/popover/popover.scss
+/web/static/src/core/pwa/install_prompt.scss
+/web/static/src/core/record_selectors/record_selectors.scss
+/web/static/src/core/resizable_panel/resizable_panel.scss
+/web/static/src/core/select_menu/select_menu.scss
+/web/static/src/core/signature/name_and_signature.scss
+/web/static/src/core/tags_list/tags_list.scss
+/web/static/src/core/time_picker/time_picker.scss
+/web/static/src/core/tooltip/tooltip.scss
+/web/static/src/core/tree_editor/tree_editor.scss
+/web/static/src/core/ui/block_ui.scss
+/web/static/src/core/utils/draggable_hook_builder.scss
+/web/static/src/core/utils/nested_sortable.scss
+/web/static/src/core/utils/transitions.scss
+/web/static/src/libs/fontawesome/css/font-awesome.css
+/web/static/lib/odoo_ui_icons/style.css
+/web/static/src/webclient/navbar/navbar.scss
+/web/static/src/scss/animation.scss
+/web/static/src/scss/fontawesome_overridden.scss
+/web/static/src/scss/mimetypes.scss
+/web/static/src/scss/ui.scss
+/web/static/src/views/fields/translation_dialog.scss
+/odoo/base/static/src/css/modules.css
+/web/static/src/core/utils/transitions.scss
+/web/static/src/search/cog_menu/cog_menu.scss
+/web/static/src/search/control_panel/control_panel.scss
+/web/static/src/search/control_panel/control_panel.variables.scss
+/web/static/src/search/control_panel/control_panel.variables_print.scss
+/web/static/src/search/control_panel/control_panel_mobile.css
+/web/static/src/search/custom_group_by_item/custom_group_by_item.scss
+/web/static/src/search/search_bar/search_bar.scss
+/web/static/src/search/search_bar/search_bar.variables.scss
+/web/static/src/search/search_bar_menu/search_bar_menu.scss
+/web/static/src/search/search_panel/search_panel.scss
+/web/static/src/search/search_panel/search_panel.variables.scss
+/web/static/src/search/search_panel/search_view.scss
+/web/static/src/webclient/icons.scss
+/web/static/src/views/calendar/calendar_common/calendar_common_popover.scss
+/web/static/src/views/calendar/calendar_controller.scss
+/web/static/src/views/calendar/calendar_controller_mobile.scss
+/web/static/src/views/calendar/calendar_filter_section/calendar_filter_section.scss
+/web/static/src/views/calendar/calendar_renderer.dark.scss
+/web/static/src/views/calendar/calendar_renderer.scss
+/web/static/src/views/calendar/calendar_renderer_mobile.scss
+/web/static/src/views/calendar/calendar_side_panel/calendar_side_panel.scss
+/web/static/src/views/calendar/calendar_year/calendar_year_popover.scss
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pkg/server/assets_xml.txt

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+/web/static/src/views/fields/journal_dashboard_graph/journal_dashboard_graph_field.xml
+/web/static/src/views/fields/json/json_field.xml
+/web/static/src/views/fields/json_checkboxes/json_checkboxes_field.xml
+/web/static/src/views/fields/kanban_color_picker/kanban_color_picker_field.xml
+/web/static/src/views/fields/label_selection/label_selection_field.xml
+/web/static/src/views/fields/many2many_binary/many2many_binary_field.xml
+/web/static/src/views/fields/many2many_checkboxes/many2many_checkboxes_field.xml
+/web/static/src/views/fields/many2many_tags/kanban_many2many_tags_field.xml
+/web/static/src/views/fields/many2many_tags/many2many_tags_field.xml
+/web/static/src/views/fields/many2many_tags_avatar/many2many_tags_avatar_field.xml
+/web/static/src/views/fields/many2one/many2one.xml
+/web/static/src/views/fields/many2one/many2one_field.xml
+/web/static/src/views/fields/many2one_avatar/kanban_many2one_avatar_field.xml
+/web/static/src/views/fields/many2one_avatar/many2one_avatar_field.xml
+/web/static/src/views/fields/many2one_barcode/many2one_barcode_field.xml
+/web/static/src/views/fields/many2one_reference/many2one_reference_field.xml
+/web/static/src/views/fields/monetary/monetary_field.xml
+/web/static/src/views/fields/pdf_viewer/pdf_viewer_field.xml
+/web/static/src/views/fields/percent_pie/percent_pie_field.xml
+/web/static/src/views/fields/percentage/percentage_field.xml
+/web/static/src/views/fields/phone/phone_field.xml
+/web/static/src/views/fields/priority/priority_field.xml
+/web/static/src/views/fields/progress_bar/progress_bar_field.xml
+/web/static/src/views/fields/properties/calendar_properties_field.xml
+/web/static/src/views/fields/properties/card_properties_field.xml
+/web/static/src/views/fields/properties/properties_field.xml
+/web/static/src/views/fields/properties/property_definition.xml
+/web/static/src/views/fields/properties/property_definition_selection.xml
+/web/static/src/views/fields/properties/property_tags.xml
+/web/static/src/views/fields/properties/property_text.xml
+/web/static/src/views/fields/properties/property_value.xml
+/web/static/src/views/fields/radio/radio_field.xml
+/web/static/src/views/fields/reference/reference_field.xml
+/web/static/src/views/fields/relational_utils.xml
+/web/static/src/views/fields/remaining_days/remaining_days_field.xml
+/web/static/src/views/fields/selection/selection_field.xml
+/web/static/src/views/fields/signature/signature_field.xml
+/web/static/src/views/fields/stat_info/stat_info_field.xml
+/web/static/src/views/fields/state_selection/state_selection_field.xml
+/web/static/src/views/fields/statusbar/statusbar_field.xml
+/web/static/src/views/fields/text/text_field.xml
+/web/static/src/views/fields/timezone_mismatch/timezone_mismatch_field.xml
+/web/static/src/views/fields/translation_button.xml
+/web/static/src/views/fields/translation_dialog.xml
+/web/static/src/views/fields/url/url_field.xml
+/web/static/src/views/fields/x2many/list_x2many_field.xml
+/web/static/src/views/fields/x2many/x2many_field.xml
+/web/static/src/views/form/button_box/button_box.xml
+/web/static/src/views/form/form_cog_menu/form_cog_menu.xml
+/web/static/src/views/form/form_controller.xml
+/web/static/src/views/form/form_error_dialog/form_error_dialog.xml
+/web/static/src/views/form/form_group/form_group.xml
+/web/static/src/views/form/form_label.xml
+/web/static/src/views/form/form_status_indicator/form_status_indicator.xml
+/web/static/src/views/form/setting/setting.xml
+/web/static/src/views/form/status_bar_buttons/status_bar_buttons.xml
+/web/static/src/views/graph/graph_controller.xml
+/web/static/src/views/graph/graph_renderer.xml
+/web/static/src/views/kanban/kanban_cog_menu.xml
+/web/static/src/views/kanban/kanban_column_examples_dialog.xml
+/web/static/src/views/kanban/kanban_column_quick_create.xml
+/web/static/src/views/kanban/kanban_controller.xml
+/web/static/src/views/kanban/kanban_cover_image_dialog.xml
+/web/static/src/views/kanban/kanban_header.xml
+/web/static/src/views/kanban/kanban_record.xml
+/web/static/src/views/kanban/kanban_record_quick_create.xml
+/web/static/src/views/kanban/kanban_renderer.xml
+/web/static/src/views/list/export_all/export_all.xml
+/web/static/src/views/list/list_cog_menu.xml
+/web/static/src/views/list/list_confirmation_dialog.xml
+/web/static/src/views/list/list_controller.xml
+/web/static/src/views/list/list_renderer.xml
+/web/static/src/views/no_content_helpers.xml
+/web/static/src/views/pivot/pivot_controller.xml
+/web/static/src/views/pivot/pivot_renderer.xml
+/web/static/src/views/view.xml
+/web/static/src/views/view_button/view_button.xml
+/web/static/src/views/view_components/animated_number.xml
+/web/static/src/views/view_components/column_progress.xml
+/web/static/src/views/view_components/group_config_menu.xml
+/web/static/src/views/view_components/multi_create_popover.xml
+/web/static/src/views/view_components/multi_currency_popover.xml
+/web/static/src/views/view_components/multi_selection_buttons.xml
+/web/static/src/views/view_components/report_view_measures.xml
+/web/static/src/views/view_components/selection_box.xml
+/web/static/src/views/view_components/view_scale_selector.xml
+/web/static/src/views/view_dialogs/export_data_dialog.xml
+/web/static/src/views/view_dialogs/form_view_dialog.xml
+/web/static/src/views/view_dialogs/select_create_dialog.xml
+/web/static/src/views/widgets/attach_document/attach_document.xml
+/web/static/src/views/widgets/documentation_link/documentation_link.xml
+/web/static/src/views/widgets/notification_alert/notification_alert.xml
+/web/static/src/views/widgets/ribbon/ribbon.xml
+/web/static/src/views/widgets/signature/signature.xml
+/web/static/src/views/widgets/week_days/week_days.xml
+/web/static/src/webclient/actions/action_dialog.xml
+/web/static/src/webclient/actions/action_install_kiosk_pwa.xml
+/web/static/src/webclient/actions/blank_component.xml
+/web/static/src/webclient/actions/reports/report_action.xml
+/web/static/src/webclient/burger_menu/burger_menu.xml
+/web/static/src/webclient/burger_menu/burger_user_menu/burger_user_menu.xml
+/web/static/src/webclient/burger_menu/mobile_switch_company_menu/mobile_switch_company_menu.xml
+/web/static/src/webclient/debug/profiling/profiling_item.xml
+/web/static/src/webclient/debug/profiling/profiling_qweb.xml
+/web/static/src/webclient/debug/profiling/profiling_systray_item.xml
+/web/static/src/webclient/loading_indicator/loading_indicator.xml
+/web/static/src/webclient/menus/menu_command_item.xml
+/web/static/src/webclient/navbar/navbar.xml
+/web/static/src/webclient/res_user_group_ids_field/res_user_group_ids_field.xml
+/web/static/src/webclient/res_user_group_ids_field/res_user_group_ids_popover.xml
+/web/static/src/webclient/res_user_group_ids_field/res_user_group_ids_privilege_field.xml
+/web/static/src/webclient/settings_form_view/fields/settings_binary_field/settings_binary_field.xml
+/web/static/src/webclient/settings_form_view/fields/upgrade_dialog.xml
+/web/static/src/webclient/settings_form_view/highlight_text/form_label_highlight_text.xml
+/web/static/src/webclient/settings_form_view/highlight_text/highlight_text.xml
+/web/static/src/webclient/settings_form_view/highlight_text/settings_radio_field.xml
+/web/static/src/webclient/settings_form_view/settings/searchable_setting.xml
+/web/static/src/webclient/settings_form_view/settings/setting_header.xml
+/web/static/src/webclient/settings_form_view/settings/settings_app.xml
+/web/static/src/webclient/settings_form_view/settings/settings_block.xml
+/web/static/src/webclient/settings_form_view/settings/settings_page.xml
+/web/static/src/webclient/settings_form_view/settings_confirmation_dialog.xml
+/web/static/src/webclient/settings_form_view/settings_form_view.xml
+/web/static/src/webclient/settings_form_view/widgets/res_config_dev_tool.xml
+/web/static/src/webclient/settings_form_view/widgets/res_config_edition.xml
+/web/static/src/webclient/settings_form_view/widgets/res_config_invite_users.xml
+/web/static/src/webclient/switch_company_menu/switch_company_item.xml
+/web/static/src/webclient/switch_company_menu/switch_company_menu.xml
+/web/static/src/webclient/user_menu/user_menu.xml
+/web/static/src/webclient/user_menu/user_menu_items.xml
+/web/static/src/webclient/webclient.xml
+/web/static/src/webclient/actions/reports/report_action.xml

pkg/server/fields_get.go

@@ -0,0 +1,57 @@
+package server
+
+import "odoo-go/pkg/orm"
+
+// fieldsGetForModel returns field metadata for a model.
+// Mirrors: odoo/orm/models.py BaseModel.fields_get()
+func fieldsGetForModel(modelName string) map[string]interface{} {
+	m := orm.Registry.Get(modelName)
+	if m == nil {
+		return map[string]interface{}{}
+	}
+
+	result := make(map[string]interface{})
+	for name, f := range m.Fields() {
+		fieldInfo := map[string]interface{}{
+			"name":       name,
+			"type":       f.Type.String(),
+			"string":     f.String,
+			"help":       f.Help,
+			"readonly":   f.Readonly,
+			"required":   f.Required,
+			"searchable": f.IsStored(),
+			"sortable":   f.IsStored(),
+			"store":      f.IsStored(),
+			"manual":     false,
+			"depends":    f.Depends,
+			"groupable":  f.IsStored() && f.Type != orm.TypeText && f.Type != orm.TypeHTML,
+			"exportable": true,
+			"change_default": false,
+		}
+
+		// Relational fields
+		if f.Comodel != "" {
+			fieldInfo["relation"] = f.Comodel
+		}
+		if f.InverseField != "" {
+			fieldInfo["relation_field"] = f.InverseField
+		}
+
+		// Selection
+		if f.Type == orm.TypeSelection && len(f.Selection) > 0 {
+			sel := make([][]string, len(f.Selection))
+			for i, item := range f.Selection {
+				sel[i] = []string{item.Value, item.Label}
+			}
+			fieldInfo["selection"] = sel
+		}
+
+		// Domain & context defaults
+		fieldInfo["domain"] = "[]"
+		fieldInfo["context"] = "{}"
+
+		result[name] = fieldInfo
+	}
+
+	return result
+}

pkg/server/login.go

@@ -0,0 +1,80 @@
+package server
+
+import (
+	"net/http"
+)
+
+// handleLogin serves the login page.
+func (s *Server) handleLogin(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.Write([]byte(`<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1"/>
+    <title>Odoo - Login</title>
+    <style>
+        * { box-sizing: border-box; margin: 0; padding: 0; }
+        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+               background: #f0eeee; display: flex; align-items: center; justify-content: center; min-height: 100vh; }
+        .login-box { background: white; padding: 40px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1);
+                     width: 100%; max-width: 400px; }
+        .login-box h1 { text-align: center; color: #71639e; margin-bottom: 30px; font-size: 28px; }
+        .login-box label { display: block; margin-bottom: 6px; font-weight: 500; color: #333; }
+        .login-box input { width: 100%; padding: 10px 12px; border: 1px solid #ddd; border-radius: 4px;
+                          font-size: 14px; margin-bottom: 16px; }
+        .login-box input:focus { outline: none; border-color: #71639e; box-shadow: 0 0 0 2px rgba(113,99,158,0.2); }
+        .login-box button { width: 100%; padding: 12px; background: #71639e; color: white; border: none;
+                           border-radius: 4px; font-size: 16px; cursor: pointer; }
+        .login-box button:hover { background: #5f5387; }
+        .error { color: #dc3545; margin-bottom: 16px; display: none; text-align: center; }
+    </style>
+</head>
+<body>
+    <div class="login-box">
+        <h1>Odoo</h1>
+        <div id="error" class="error"></div>
+        <form id="loginForm">
+            <label for="login">Email</label>
+            <input type="text" id="login" name="login" value="admin" autofocus/>
+            <label for="password">Password</label>
+            <input type="password" id="password" name="password" value="admin"/>
+            <button type="submit">Log in</button>
+        </form>
+    </div>
+    <script>
+    document.getElementById('loginForm').addEventListener('submit', function(e) {
+        e.preventDefault();
+        var login = document.getElementById('login').value;
+        var password = document.getElementById('password').value;
+        var errorEl = document.getElementById('error');
+        errorEl.style.display = 'none';
+
+        fetch('/web/session/authenticate', {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({
+                jsonrpc: '2.0',
+                method: 'call',
+                id: 1,
+                params: {db: '` + s.config.DBName + `', login: login, password: password}
+            })
+        })
+        .then(function(r) { return r.json(); })
+        .then(function(data) {
+            if (data.error) {
+                errorEl.textContent = data.error.message;
+                errorEl.style.display = 'block';
+            } else if (data.result && data.result.uid) {
+                window.location.href = '/web';
+            }
+        })
+        .catch(function(err) {
+            errorEl.textContent = 'Connection error';
+            errorEl.style.display = 'block';
+        });
+    });
+    </script>
+</body>
+</html>`))
+}

pkg/server/menus.go

@@ -0,0 +1,61 @@
+package server
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+// handleLoadMenus returns the menu tree for the webclient.
+// Mirrors: odoo/addons/web/controllers/home.py Home.web_load_menus()
+func (s *Server) handleLoadMenus(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Cache-Control", "public, max-age=3600")
+
+	// Build menu tree from database or hardcoded defaults
+	menus := map[string]interface{}{
+		"root": map[string]interface{}{
+			"id":                  "root",
+			"name":                "root",
+			"children":            []int{1},
+			"appID":               false,
+			"xmlid":               "",
+			"actionID":            false,
+			"actionModel":         false,
+			"actionPath":          false,
+			"webIcon":             nil,
+			"webIconData":         nil,
+			"webIconDataMimetype": nil,
+			"backgroundImage":     nil,
+		},
+		"1": map[string]interface{}{
+			"id":                  1,
+			"name":                "Contacts",
+			"children":            []int{10},
+			"appID":               1,
+			"xmlid":               "contacts.menu_contacts",
+			"actionID":            1,
+			"actionModel":         "ir.actions.act_window",
+			"actionPath":          false,
+			"webIcon":             "fa-address-book,#71639e,#FFFFFF",
+			"webIconData":         nil,
+			"webIconDataMimetype": nil,
+			"backgroundImage":     nil,
+		},
+		"10": map[string]interface{}{
+			"id":                  10,
+			"name":                "Contacts",
+			"children":            []int{},
+			"appID":               1,
+			"xmlid":               "contacts.menu_contacts_list",
+			"actionID":            1,
+			"actionModel":         "ir.actions.act_window",
+			"actionPath":          false,
+			"webIcon":             nil,
+			"webIconData":         nil,
+			"webIconDataMimetype": nil,
+			"backgroundImage":     nil,
+		},
+	}
+
+	json.NewEncoder(w).Encode(menus)
+}

pkg/server/middleware.go

@@ -0,0 +1,61 @@
+package server
+
+import (
+	"context"
+	"net/http"
+	"strings"
+)
+
+type contextKey string
+
+const sessionKey contextKey = "session"
+
+// AuthMiddleware checks for a valid session cookie on protected endpoints.
+func AuthMiddleware(store *SessionStore, next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// Public endpoints (no auth required)
+		path := r.URL.Path
+		if path == "/health" ||
+			path == "/web/login" ||
+			path == "/web/setup" ||
+			path == "/web/setup/install" ||
+			path == "/web/session/authenticate" ||
+			path == "/web/database/list" ||
+			path == "/web/webclient/version_info" ||
+			strings.Contains(path, "/static/") {
+			next.ServeHTTP(w, r)
+			return
+		}
+
+		// Check session cookie
+		cookie, err := r.Cookie("session_id")
+		if err != nil || cookie.Value == "" {
+			// Also check JSON-RPC params for session_id (Odoo sends it both ways)
+			next.ServeHTTP(w, r) // For now, allow through — UID defaults to 1
+			return
+		}
+
+		sess := store.Get(cookie.Value)
+		if sess == nil {
+			// JSON-RPC endpoints get JSON error, browser gets redirect
+			if r.Header.Get("Content-Type") == "application/json" ||
+				strings.HasPrefix(path, "/web/dataset/") ||
+				strings.HasPrefix(path, "/jsonrpc") {
+				http.Error(w, `{"jsonrpc":"2.0","error":{"code":100,"message":"Session expired"}}`, http.StatusUnauthorized)
+			} else {
+				http.Redirect(w, r, "/web/login", http.StatusFound)
+			}
+			return
+		}
+
+		// Inject session into context
+		ctx := context.WithValue(r.Context(), sessionKey, sess)
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
+
+// GetSession extracts the session from request context.
+func GetSession(r *http.Request) *Session {
+	sess, _ := r.Context().Value(sessionKey).(*Session)
+	return sess
+}

pkg/server/server.go

@@ -0,0 +1,665 @@
+// Package server implements the HTTP server and RPC dispatch.
+// Mirrors: odoo/http.py, odoo/service/server.py
+package server
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"odoo-go/pkg/orm"
+	"odoo-go/pkg/tools"
+)
+
+// Server is the main Odoo HTTP server.
+// Mirrors: odoo/service/server.py ThreadedServer
+type Server struct {
+	config   *tools.Config
+	pool     *pgxpool.Pool
+	mux      *http.ServeMux
+	sessions *SessionStore
+}
+
+// New creates a new server instance.
+func New(cfg *tools.Config, pool *pgxpool.Pool) *Server {
+	s := &Server{
+		config:   cfg,
+		pool:     pool,
+		mux:      http.NewServeMux(),
+		sessions: NewSessionStore(24 * time.Hour),
+	}
+	s.registerRoutes()
+	return s
+}
+
+// registerRoutes sets up HTTP routes.
+// Mirrors: odoo/http.py Application._setup_routes()
+func (s *Server) registerRoutes() {
+	// Webclient HTML shell
+	s.mux.HandleFunc("/web", s.handleWebClient)
+	s.mux.HandleFunc("/web/", s.handleWebRoute)
+	s.mux.HandleFunc("/odoo", s.handleWebClient)
+	s.mux.HandleFunc("/odoo/", s.handleWebClient)
+
+	// Login page
+	s.mux.HandleFunc("/web/login", s.handleLogin)
+
+	// JSON-RPC endpoint (main API)
+	s.mux.HandleFunc("/jsonrpc", s.handleJSONRPC)
+	s.mux.HandleFunc("/web/dataset/call_kw", s.handleCallKW)
+	s.mux.HandleFunc("/web/dataset/call_kw/", s.handleCallKW)
+
+	// Session endpoints
+	s.mux.HandleFunc("/web/session/authenticate", s.handleAuthenticate)
+	s.mux.HandleFunc("/web/session/get_session_info", s.handleSessionInfo)
+	s.mux.HandleFunc("/web/session/check", s.handleSessionCheck)
+	s.mux.HandleFunc("/web/session/modules", s.handleSessionModules)
+
+	// Webclient endpoints
+	s.mux.HandleFunc("/web/webclient/load_menus", s.handleLoadMenus)
+	s.mux.HandleFunc("/web/webclient/translations", s.handleTranslations)
+	s.mux.HandleFunc("/web/webclient/version_info", s.handleVersionInfo)
+	s.mux.HandleFunc("/web/webclient/bootstrap_translations", s.handleBootstrapTranslations)
+
+	// Action loading
+	s.mux.HandleFunc("/web/action/load", s.handleActionLoad)
+
+	// Database endpoints
+	s.mux.HandleFunc("/web/database/list", s.handleDBList)
+
+	// Setup wizard
+	s.mux.HandleFunc("/web/setup", s.handleSetup)
+	s.mux.HandleFunc("/web/setup/install", s.handleSetupInstall)
+
+	// PWA manifest
+	s.mux.HandleFunc("/web/manifest.webmanifest", s.handleManifest)
+
+	// Health check
+	s.mux.HandleFunc("/health", s.handleHealth)
+
+	// Static files (catch-all for /<addon>/static/...)
+	// NOTE: must be last since it's a broad pattern
+}
+
+// handleWebRoute dispatches /web/* sub-routes or falls back to static files.
+func (s *Server) handleWebRoute(w http.ResponseWriter, r *http.Request) {
+	path := r.URL.Path
+
+	// Known sub-routes are handled by specific handlers above.
+	// Anything under /web/static/ is a static file request.
+	if strings.HasPrefix(path, "/web/static/") {
+		s.handleStatic(w, r)
+		return
+	}
+
+	// For all other /web/* paths, serve the webclient (SPA routing)
+	s.handleWebClient(w, r)
+}
+
+// Start starts the HTTP server.
+func (s *Server) Start() error {
+	addr := fmt.Sprintf("%s:%d", s.config.HTTPInterface, s.config.HTTPPort)
+	log.Printf("odoo: HTTP service running on %s", addr)
+
+	srv := &http.Server{
+		Addr:         addr,
+		Handler:      AuthMiddleware(s.sessions, s.mux),
+		ReadTimeout:  30 * time.Second,
+		WriteTimeout: 30 * time.Second,
+		IdleTimeout:  120 * time.Second,
+	}
+
+	return srv.ListenAndServe()
+}
+
+// --- JSON-RPC ---
+// Mirrors: odoo/http.py JsonRPCDispatcher
+
+// JSONRPCRequest is the JSON-RPC 2.0 request format.
+type JSONRPCRequest struct {
+	JSONRPC string          `json:"jsonrpc"`
+	Method  string          `json:"method"`
+	ID      interface{}     `json:"id"`
+	Params  json.RawMessage `json:"params"`
+}
+
+// JSONRPCResponse is the JSON-RPC 2.0 response format.
+type JSONRPCResponse struct {
+	JSONRPC string      `json:"jsonrpc"`
+	ID      interface{} `json:"id"`
+	Result  interface{} `json:"result,omitempty"`
+	Error   *RPCError   `json:"error,omitempty"`
+}
+
+// RPCError represents a JSON-RPC error.
+type RPCError struct {
+	Code    int         `json:"code"`
+	Message string      `json:"message"`
+	Data    interface{} `json:"data,omitempty"`
+}
+
+// CallKWParams mirrors the /web/dataset/call_kw parameters.
+type CallKWParams struct {
+	Model  string        `json:"model"`
+	Method string        `json:"method"`
+	Args   []interface{} `json:"args"`
+	KW     Values        `json:"kwargs"`
+}
+
+// Values is a generic key-value map for RPC parameters.
+type Values = map[string]interface{}
+
+func (s *Server) handleJSONRPC(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req JSONRPCRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		s.writeJSONRPC(w, req.ID, nil, &RPCError{
+			Code: -32700, Message: "Parse error",
+		})
+		return
+	}
+
+	// Dispatch based on method
+	s.writeJSONRPC(w, req.ID, map[string]string{"status": "ok"}, nil)
+}
+
+// handleCallKW handles ORM method calls via JSON-RPC.
+// Mirrors: odoo/service/model.py execute_kw()
+func (s *Server) handleCallKW(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req JSONRPCRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		s.writeJSONRPC(w, req.ID, nil, &RPCError{
+			Code: -32700, Message: "Parse error",
+		})
+		return
+	}
+
+	var params CallKWParams
+	if err := json.Unmarshal(req.Params, &params); err != nil {
+		s.writeJSONRPC(w, req.ID, nil, &RPCError{
+			Code: -32602, Message: "Invalid params",
+		})
+		return
+	}
+
+	// Extract UID from session, default to 1 (admin) if no session
+	uid := int64(1)
+	companyID := int64(1)
+	if sess := GetSession(r); sess != nil {
+		uid = sess.UID
+		companyID = sess.CompanyID
+	}
+
+	// Create environment for this request
+	env, err := orm.NewEnvironment(r.Context(), orm.EnvConfig{
+		Pool:      s.pool,
+		UID:       uid,
+		CompanyID: companyID,
+	})
+	if err != nil {
+		s.writeJSONRPC(w, req.ID, nil, &RPCError{
+			Code: -32000, Message: err.Error(),
+		})
+		return
+	}
+	defer env.Close()
+
+	// Dispatch ORM method
+	result, rpcErr := s.dispatchORM(env, params)
+	if rpcErr != nil {
+		s.writeJSONRPC(w, req.ID, nil, rpcErr)
+		return
+	}
+
+	if err := env.Commit(); err != nil {
+		s.writeJSONRPC(w, req.ID, nil, &RPCError{
+			Code: -32000, Message: err.Error(),
+		})
+		return
+	}
+
+	s.writeJSONRPC(w, req.ID, result, nil)
+}
+
+// checkAccess verifies the current user has permission for the operation.
+// Mirrors: odoo/addons/base/models/ir_model.py IrModelAccess.check()
+func (s *Server) checkAccess(env *orm.Environment, model, method string) *RPCError {
+	if env.IsSuperuser() || env.UID() == 1 {
+		return nil // Superuser bypasses all checks
+	}
+
+	perm := "perm_read"
+	switch method {
+	case "create":
+		perm = "perm_create"
+	case "write":
+		perm = "perm_write"
+	case "unlink":
+		perm = "perm_unlink"
+	}
+
+	// Check if any ACL exists for this model
+	var count int64
+	err := env.Tx().QueryRow(env.Ctx(),
+		`SELECT COUNT(*) FROM ir_model_access a
+		 JOIN ir_model m ON m.id = a.model_id
+		 WHERE m.model = $1`, model).Scan(&count)
+	if err != nil || count == 0 {
+		return nil // No ACLs defined → open access (like Odoo superuser mode)
+	}
+
+	// Check if user's groups grant permission
+	var granted bool
+	err = env.Tx().QueryRow(env.Ctx(), fmt.Sprintf(`
+		SELECT EXISTS(
+			SELECT 1 FROM ir_model_access a
+			JOIN ir_model m ON m.id = a.model_id
+			LEFT JOIN res_groups_res_users_rel gu ON gu.res_groups_id = a.group_id
+			WHERE m.model = $1
+			AND a.active = true
+			AND a.%s = true
+			AND (a.group_id IS NULL OR gu.res_users_id = $2)
+		)`, perm), model, env.UID()).Scan(&granted)
+	if err != nil {
+		return nil // On error, allow (fail-open for now)
+	}
+	if !granted {
+		return &RPCError{
+			Code:    403,
+			Message: fmt.Sprintf("Access Denied: %s on %s", method, model),
+		}
+	}
+	return nil
+}
+
+// dispatchORM dispatches an ORM method call.
+// Mirrors: odoo/service/model.py call_kw()
+func (s *Server) dispatchORM(env *orm.Environment, params CallKWParams) (interface{}, *RPCError) {
+	// Check access control
+	if err := s.checkAccess(env, params.Model, params.Method); err != nil {
+		return nil, err
+	}
+
+	rs := env.Model(params.Model)
+
+	switch params.Method {
+	case "has_group":
+		// Always return true for admin user, stub for now
+		return true, nil
+
+	case "check_access_rights":
+		return true, nil
+
+	case "fields_get":
+		return fieldsGetForModel(params.Model), nil
+
+	case "web_search_read":
+		return handleWebSearchRead(env, params.Model, params)
+
+	case "web_read":
+		return handleWebRead(env, params.Model, params)
+
+	case "get_views":
+		return handleGetViews(env, params.Model, params)
+
+	case "onchange":
+		// Basic onchange: return empty value dict
+		return map[string]interface{}{"value": map[string]interface{}{}}, nil
+
+	case "search_read":
+		domain := parseDomain(params.Args)
+		fields := parseFields(params.KW)
+		records, err := rs.SearchRead(domain, fields)
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+		return records, nil
+
+	case "read":
+		ids := parseIDs(params.Args)
+		fields := parseFields(params.KW)
+		records, err := rs.Browse(ids...).Read(fields)
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+		return records, nil
+
+	case "create":
+		vals := parseValues(params.Args)
+		record, err := rs.Create(vals)
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+		return record.ID(), nil
+
+	case "write":
+		ids := parseIDs(params.Args)
+		vals := parseValuesAt(params.Args, 1)
+		err := rs.Browse(ids...).Write(vals)
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+		return true, nil
+
+	case "unlink":
+		ids := parseIDs(params.Args)
+		err := rs.Browse(ids...).Unlink()
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+		return true, nil
+
+	case "search_count":
+		domain := parseDomain(params.Args)
+		count, err := rs.SearchCount(domain)
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+		return count, nil
+
+	case "name_get":
+		ids := parseIDs(params.Args)
+		names, err := rs.Browse(ids...).NameGet()
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+		// Convert map to Odoo format: [[id, "name"], ...]
+		var result [][]interface{}
+		for id, name := range names {
+			result = append(result, []interface{}{id, name})
+		}
+		return result, nil
+
+	case "name_search":
+		// Basic name_search: search by name, return [[id, "name"], ...]
+		nameStr := ""
+		if len(params.Args) > 0 {
+			nameStr, _ = params.Args[0].(string)
+		}
+		limit := 8
+		domain := orm.Domain{}
+		if nameStr != "" {
+			domain = orm.And(orm.Leaf("name", "ilike", nameStr))
+		}
+		found, err := rs.Search(domain, orm.SearchOpts{Limit: limit})
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+		names, err := found.NameGet()
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+		var nameResult [][]interface{}
+		for id, name := range names {
+			nameResult = append(nameResult, []interface{}{id, name})
+		}
+		return nameResult, nil
+
+	default:
+		// Try registered business methods on the model
+		model := orm.Registry.Get(params.Model)
+		if model != nil && model.Methods != nil {
+			if method, ok := model.Methods[params.Method]; ok {
+				ids := parseIDs(params.Args)
+				result, err := method(rs.Browse(ids...), params.Args[1:]...)
+				if err != nil {
+					return nil, &RPCError{Code: -32000, Message: err.Error()}
+				}
+				return result, nil
+			}
+		}
+		return nil, &RPCError{
+			Code:    -32601,
+			Message: fmt.Sprintf("Method %q not found on %s", params.Method, params.Model),
+		}
+	}
+}
+
+// --- Session / Auth Endpoints ---
+
+func (s *Server) handleAuthenticate(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req JSONRPCRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		s.writeJSONRPC(w, nil, nil, &RPCError{Code: -32700, Message: "Parse error"})
+		return
+	}
+
+	var params struct {
+		DB       string `json:"db"`
+		Login    string `json:"login"`
+		Password string `json:"password"`
+	}
+	if err := json.Unmarshal(req.Params, &params); err != nil {
+		s.writeJSONRPC(w, req.ID, nil, &RPCError{Code: -32602, Message: "Invalid params"})
+		return
+	}
+
+	// Query user by login
+	var uid int64
+	var companyID int64
+	var partnerID int64
+	var hashedPw string
+	var userName string
+
+	err := s.pool.QueryRow(r.Context(),
+		`SELECT u.id, u.password, u.company_id, u.partner_id, p.name
+		 FROM res_users u
+		 JOIN res_partner p ON p.id = u.partner_id
+		 WHERE u.login = $1 AND u.active = true`,
+		params.Login,
+	).Scan(&uid, &hashedPw, &companyID, &partnerID, &userName)
+
+	if err != nil {
+		s.writeJSONRPC(w, req.ID, nil, &RPCError{
+			Code: 100, Message: "Access Denied: invalid login or password",
+		})
+		return
+	}
+
+	// Check password (support both bcrypt and plaintext for migration)
+	if !tools.CheckPassword(hashedPw, params.Password) && hashedPw != params.Password {
+		s.writeJSONRPC(w, req.ID, nil, &RPCError{
+			Code: 100, Message: "Access Denied: invalid login or password",
+		})
+		return
+	}
+
+	// Create session
+	sess := s.sessions.New(uid, companyID, params.Login)
+
+	// Set session cookie
+	http.SetCookie(w, &http.Cookie{
+		Name:     "session_id",
+		Value:    sess.ID,
+		Path:     "/",
+		HttpOnly: true,
+		SameSite: http.SameSiteLaxMode,
+	})
+
+	s.writeJSONRPC(w, req.ID, map[string]interface{}{
+		"uid":                  uid,
+		"session_id":           sess.ID,
+		"company_id":           companyID,
+		"partner_id":           partnerID,
+		"is_admin":             uid == 1,
+		"name":                 userName,
+		"username":             params.Login,
+		"server_version":       "19.0-go",
+		"server_version_info":  []interface{}{19, 0, 0, "final", 0, "g"},
+		"db":                   s.config.DBName,
+	}, nil)
+}
+
+func (s *Server) handleSessionInfo(w http.ResponseWriter, r *http.Request) {
+	s.writeJSONRPC(w, nil, map[string]interface{}{
+		"uid":                  1,
+		"is_admin":             true,
+		"server_version":       "19.0-go",
+		"server_version_info":  []interface{}{19, 0, 0, "final", 0, "g"},
+		"db":                   s.config.DBName,
+	}, nil)
+}
+
+func (s *Server) handleDBList(w http.ResponseWriter, r *http.Request) {
+	s.writeJSONRPC(w, nil, []string{s.config.DBName}, nil)
+}
+
+func (s *Server) handleVersionInfo(w http.ResponseWriter, r *http.Request) {
+	s.writeJSONRPC(w, nil, map[string]interface{}{
+		"server_version":      "19.0-go",
+		"server_version_info": []interface{}{19, 0, 0, "final", 0, "g"},
+		"server_serie":        "19.0",
+		"protocol_version":    1,
+	}, nil)
+}
+
+func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {
+	err := s.pool.Ping(context.Background())
+	if err != nil {
+		http.Error(w, "unhealthy", http.StatusServiceUnavailable)
+		return
+	}
+	w.WriteHeader(http.StatusOK)
+	fmt.Fprint(w, "ok")
+}
+
+// --- Helpers ---
+
+func (s *Server) writeJSONRPC(w http.ResponseWriter, id interface{}, result interface{}, rpcErr *RPCError) {
+	w.Header().Set("Content-Type", "application/json")
+	resp := JSONRPCResponse{
+		JSONRPC: "2.0",
+		ID:      id,
+		Result:  result,
+		Error:   rpcErr,
+	}
+	json.NewEncoder(w).Encode(resp)
+}
+
+// parseDomain converts JSON-RPC domain args to orm.Domain.
+// JSON format: [["field", "op", value], ...] or ["&", ["field", "op", value], ...]
+func parseDomain(args []interface{}) orm.Domain {
+	if len(args) == 0 {
+		return nil
+	}
+
+	// First arg should be the domain list
+	domainRaw, ok := args[0].([]interface{})
+	if !ok {
+		return nil
+	}
+	if len(domainRaw) == 0 {
+		return nil
+	}
+
+	var nodes []orm.DomainNode
+	for _, item := range domainRaw {
+		switch v := item.(type) {
+		case string:
+			// Operator: "&", "|", "!"
+			nodes = append(nodes, orm.Operator(v))
+		case []interface{}:
+			// Leaf: ["field", "op", value]
+			if len(v) == 3 {
+				field, _ := v[0].(string)
+				op, _ := v[1].(string)
+				nodes = append(nodes, orm.Leaf(field, op, v[2]))
+			}
+		}
+	}
+
+	// If we have multiple leaves without explicit operators, AND them together
+	// (Odoo default: implicit AND between leaves)
+	var leaves []orm.DomainNode
+	for _, n := range nodes {
+		leaves = append(leaves, n)
+	}
+
+	if len(leaves) == 0 {
+		return nil
+	}
+	return orm.Domain(leaves)
+}
+
+func parseIDs(args []interface{}) []int64 {
+	if len(args) == 0 {
+		return nil
+	}
+	switch v := args[0].(type) {
+	case []interface{}:
+		ids := make([]int64, len(v))
+		for i, item := range v {
+			switch n := item.(type) {
+			case float64:
+				ids[i] = int64(n)
+			case int64:
+				ids[i] = n
+			}
+		}
+		return ids
+	case float64:
+		return []int64{int64(v)}
+	}
+	return nil
+}
+
+func parseFields(kw Values) []string {
+	if kw == nil {
+		return nil
+	}
+	fieldsRaw, ok := kw["fields"]
+	if !ok {
+		return nil
+	}
+	fieldsSlice, ok := fieldsRaw.([]interface{})
+	if !ok {
+		return nil
+	}
+	fields := make([]string, len(fieldsSlice))
+	for i, f := range fieldsSlice {
+		fields[i], _ = f.(string)
+	}
+	return fields
+}
+
+func parseValues(args []interface{}) orm.Values {
+	if len(args) == 0 {
+		return nil
+	}
+	vals, ok := args[0].(map[string]interface{})
+	if !ok {
+		return nil
+	}
+	return orm.Values(vals)
+}
+
+func parseValuesAt(args []interface{}, idx int) orm.Values {
+	if len(args) <= idx {
+		return nil
+	}
+	vals, ok := args[idx].(map[string]interface{})
+	if !ok {
+		return nil
+	}
+	return orm.Values(vals)
+}

pkg/server/session.go

@@ -0,0 +1,86 @@
+package server
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"sync"
+	"time"
+)
+
+// Session represents an authenticated user session.
+type Session struct {
+	ID           string
+	UID          int64
+	CompanyID    int64
+	Login        string
+	CreatedAt    time.Time
+	LastActivity time.Time
+}
+
+// SessionStore is a thread-safe in-memory session store.
+type SessionStore struct {
+	mu       sync.RWMutex
+	sessions map[string]*Session
+	ttl      time.Duration
+}
+
+// NewSessionStore creates a new session store with the given TTL.
+func NewSessionStore(ttl time.Duration) *SessionStore {
+	return &SessionStore{
+		sessions: make(map[string]*Session),
+		ttl:      ttl,
+	}
+}
+
+// New creates a new session and returns it.
+func (s *SessionStore) New(uid, companyID int64, login string) *Session {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	token := generateToken()
+	sess := &Session{
+		ID:           token,
+		UID:          uid,
+		CompanyID:    companyID,
+		Login:        login,
+		CreatedAt:    time.Now(),
+		LastActivity: time.Now(),
+	}
+	s.sessions[token] = sess
+	return sess
+}
+
+// Get retrieves a session by ID. Returns nil if not found or expired.
+func (s *SessionStore) Get(id string) *Session {
+	s.mu.RLock()
+	sess, ok := s.sessions[id]
+	s.mu.RUnlock()
+
+	if !ok {
+		return nil
+	}
+	if time.Since(sess.LastActivity) > s.ttl {
+		s.Delete(id)
+		return nil
+	}
+
+	// Update last activity
+	s.mu.Lock()
+	sess.LastActivity = time.Now()
+	s.mu.Unlock()
+
+	return sess
+}
+
+// Delete removes a session.
+func (s *SessionStore) Delete(id string) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	delete(s.sessions, id)
+}
+
+func generateToken() string {
+	b := make([]byte, 32)
+	rand.Read(b)
+	return hex.EncodeToString(b)
+}

pkg/server/setup.go

@@ -0,0 +1,290 @@
+package server
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+
+	"odoo-go/pkg/service"
+	"odoo-go/pkg/tools"
+)
+
+// isSetupNeeded checks if the database has been initialized.
+func (s *Server) isSetupNeeded() bool {
+	var count int
+	err := s.pool.QueryRow(context.Background(),
+		`SELECT COUNT(*) FROM res_company`).Scan(&count)
+	return err != nil || count == 0
+}
+
+// handleSetup serves the setup wizard.
+func (s *Server) handleSetup(w http.ResponseWriter, r *http.Request) {
+	if !s.isSetupNeeded() {
+		http.Redirect(w, r, "/web/login", http.StatusFound)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.Write([]byte(`<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1"/>
+    <title>Odoo — Setup</title>
+    <style>
+        * { box-sizing: border-box; margin: 0; padding: 0; }
+        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+               background: #f0eeee; display: flex; align-items: center; justify-content: center; min-height: 100vh; }
+        .setup { background: white; padding: 40px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1);
+                 width: 100%; max-width: 560px; }
+        .setup h1 { color: #71639e; margin-bottom: 8px; font-size: 28px; }
+        .setup .subtitle { color: #666; margin-bottom: 30px; font-size: 14px; }
+        .setup h2 { color: #333; font-size: 16px; margin: 24px 0 12px; padding-top: 16px; border-top: 1px solid #eee; }
+        .setup h2:first-of-type { border-top: none; padding-top: 0; }
+        .setup label { display: block; margin-bottom: 4px; font-weight: 500; color: #555; font-size: 13px; }
+        .setup input, .setup select { width: 100%; padding: 9px 12px; border: 1px solid #ddd; border-radius: 4px;
+                                      font-size: 14px; margin-bottom: 12px; }
+        .setup input:focus, .setup select:focus { outline: none; border-color: #71639e; box-shadow: 0 0 0 2px rgba(113,99,158,0.2); }
+        .row { display: flex; gap: 12px; }
+        .row > div { flex: 1; }
+        .setup button { width: 100%; padding: 14px; background: #71639e; color: white; border: none;
+                       border-radius: 4px; font-size: 16px; cursor: pointer; margin-top: 20px; }
+        .setup button:hover { background: #5f5387; }
+        .setup button:disabled { background: #aaa; cursor: not-allowed; }
+        .error { color: #dc3545; margin-bottom: 12px; display: none; text-align: center; }
+        .check { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
+        .check input { width: auto; margin: 0; }
+        .check label { margin: 0; }
+        .progress { display: none; text-align: center; padding: 20px; }
+        .progress .spinner { font-size: 32px; animation: spin 1s linear infinite; display: inline-block; }
+        @keyframes spin { to { transform: rotate(360deg); } }
+    </style>
+</head>
+<body>
+    <div class="setup">
+        <h1>Odoo Setup</h1>
+        <p class="subtitle">Richten Sie Ihre Datenbank ein</p>
+
+        <div id="error" class="error"></div>
+
+        <form id="setupForm">
+            <h2>Unternehmen</h2>
+            <label for="company_name">Firmenname *</label>
+            <input type="text" id="company_name" name="company_name" required placeholder="Mustermann GmbH"/>
+
+            <div class="row">
+                <div>
+                    <label for="street">Straße</label>
+                    <input type="text" id="street" name="street" placeholder="Musterstraße 1"/>
+                </div>
+                <div>
+                    <label for="zip">PLZ</label>
+                    <input type="text" id="zip" name="zip" placeholder="10115"/>
+                </div>
+            </div>
+
+            <div class="row">
+                <div>
+                    <label for="city">Stadt</label>
+                    <input type="text" id="city" name="city" placeholder="Berlin"/>
+                </div>
+                <div>
+                    <label for="country">Land</label>
+                    <select id="country" name="country">
+                        <option value="DE" selected>Deutschland</option>
+                        <option value="AT">Österreich</option>
+                        <option value="CH">Schweiz</option>
+                    </select>
+                </div>
+            </div>
+
+            <label for="email">Email</label>
+            <input type="email" id="email" name="email" placeholder="info@firma.de"/>
+
+            <label for="phone">Telefon</label>
+            <input type="text" id="phone" name="phone" placeholder="+49 30 12345678"/>
+
+            <label for="vat">USt-IdNr.</label>
+            <input type="text" id="vat" name="vat" placeholder="DE123456789"/>
+
+            <h2>Kontenrahmen</h2>
+            <select id="chart" name="chart">
+                <option value="skr03" selected>SKR03 (Standard, Prozessgliederung)</option>
+                <option value="skr04">SKR04 (Abschlussgliederung)</option>
+                <option value="none">Kein Kontenrahmen</option>
+            </select>
+
+            <h2>Administrator</h2>
+            <label for="admin_email">Login (Email) *</label>
+            <input type="email" id="admin_email" name="admin_email" required placeholder="admin@firma.de"/>
+
+            <label for="admin_password">Passwort *</label>
+            <input type="password" id="admin_password" name="admin_password" required minlength="4" placeholder="Mindestens 4 Zeichen"/>
+
+            <h2>Optionen</h2>
+            <div class="check">
+                <input type="checkbox" id="demo_data" name="demo_data"/>
+                <label for="demo_data">Demo-Daten laden (Beispielkunden, Rechnungen, etc.)</label>
+            </div>
+
+            <button type="submit" id="submitBtn">Datenbank einrichten</button>
+        </form>
+
+        <div id="progress" class="progress">
+            <div class="spinner">⟳</div>
+            <p style="margin-top:12px;color:#666;">Datenbank wird eingerichtet...</p>
+        </div>
+    </div>
+
+    <script>
+    document.getElementById('setupForm').addEventListener('submit', function(e) {
+        e.preventDefault();
+        var btn = document.getElementById('submitBtn');
+        var form = document.getElementById('setupForm');
+        var progress = document.getElementById('progress');
+        var errorEl = document.getElementById('error');
+
+        btn.disabled = true;
+        errorEl.style.display = 'none';
+
+        var data = {
+            company_name: document.getElementById('company_name').value,
+            street: document.getElementById('street').value,
+            zip: document.getElementById('zip').value,
+            city: document.getElementById('city').value,
+            country: document.getElementById('country').value,
+            email: document.getElementById('email').value,
+            phone: document.getElementById('phone').value,
+            vat: document.getElementById('vat').value,
+            chart: document.getElementById('chart').value,
+            admin_email: document.getElementById('admin_email').value,
+            admin_password: document.getElementById('admin_password').value,
+            demo_data: document.getElementById('demo_data').checked
+        };
+
+        form.style.display = 'none';
+        progress.style.display = 'block';
+
+        fetch('/web/setup/install', {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify(data)
+        })
+        .then(function(r) { return r.json(); })
+        .then(function(result) {
+            if (result.error) {
+                form.style.display = 'block';
+                progress.style.display = 'none';
+                errorEl.textContent = result.error;
+                errorEl.style.display = 'block';
+                btn.disabled = false;
+            } else {
+                window.location.href = '/web/login';
+            }
+        })
+        .catch(function(err) {
+            form.style.display = 'block';
+            progress.style.display = 'none';
+            errorEl.textContent = 'Verbindungsfehler: ' + err.message;
+            errorEl.style.display = 'block';
+            btn.disabled = false;
+        });
+    });
+    </script>
+</body>
+</html>`))
+}
+
+// SetupParams holds the setup wizard form data.
+type SetupParams struct {
+	CompanyName   string `json:"company_name"`
+	Street        string `json:"street"`
+	Zip           string `json:"zip"`
+	City          string `json:"city"`
+	Country       string `json:"country"`
+	Email         string `json:"email"`
+	Phone         string `json:"phone"`
+	VAT           string `json:"vat"`
+	Chart         string `json:"chart"`
+	AdminEmail    string `json:"admin_email"`
+	AdminPassword string `json:"admin_password"`
+	DemoData      bool   `json:"demo_data"`
+}
+
+// handleSetupInstall processes the setup wizard form submission.
+func (s *Server) handleSetupInstall(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var params SetupParams
+	if err := json.NewDecoder(r.Body).Decode(&params); err != nil {
+		writeJSON(w, map[string]string{"error": "Invalid request"})
+		return
+	}
+
+	if params.CompanyName == "" {
+		writeJSON(w, map[string]string{"error": "Firmenname ist erforderlich"})
+		return
+	}
+	if params.AdminEmail == "" || params.AdminPassword == "" {
+		writeJSON(w, map[string]string{"error": "Admin Email und Passwort sind erforderlich"})
+		return
+	}
+
+	log.Printf("setup: initializing database for %q", params.CompanyName)
+
+	// Hash admin password
+	hashedPw, err := tools.HashPassword(params.AdminPassword)
+	if err != nil {
+		writeJSON(w, map[string]string{"error": fmt.Sprintf("Password hash error: %v", err)})
+		return
+	}
+
+	// Map country code to name
+	countryName := "Germany"
+	phoneCode := "49"
+	switch params.Country {
+	case "AT":
+		countryName = "Austria"
+		phoneCode = "43"
+	case "CH":
+		countryName = "Switzerland"
+		phoneCode = "41"
+	}
+
+	// Run the seed with user-provided data
+	setupCfg := service.SetupConfig{
+		CompanyName:   params.CompanyName,
+		Street:        params.Street,
+		Zip:           params.Zip,
+		City:          params.City,
+		CountryCode:   params.Country,
+		CountryName:   countryName,
+		PhoneCode:     phoneCode,
+		Email:         params.Email,
+		Phone:         params.Phone,
+		VAT:           params.VAT,
+		Chart:         params.Chart,
+		AdminLogin:    params.AdminEmail,
+		AdminPassword: hashedPw,
+		DemoData:      params.DemoData,
+	}
+
+	if err := service.SeedWithSetup(context.Background(), s.pool, setupCfg); err != nil {
+		log.Printf("setup: error: %v", err)
+		writeJSON(w, map[string]string{"error": fmt.Sprintf("Setup error: %v", err)})
+		return
+	}
+
+	log.Printf("setup: database initialized successfully for %q", params.CompanyName)
+	writeJSON(w, map[string]string{"status": "ok"})
+}
+
+func writeJSON(w http.ResponseWriter, v interface{}) {
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(v)
+}

pkg/server/static.go

@@ -0,0 +1,65 @@
+package server
+
+import (
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// handleStatic serves static files from Odoo addon directories.
+// URL pattern: /<addon_name>/static/<path>
+// Maps to: <addons_path>/<addon_name>/static/<path>
+func (s *Server) handleStatic(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet && r.Method != http.MethodHead {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	path := strings.TrimPrefix(r.URL.Path, "/")
+	parts := strings.SplitN(path, "/", 3)
+	if len(parts) < 3 || parts[1] != "static" {
+		http.NotFound(w, r)
+		return
+	}
+
+	addonName := parts[0]
+	filePath := parts[2]
+
+	// Security: prevent directory traversal
+	if strings.Contains(filePath, "..") {
+		http.NotFound(w, r)
+		return
+	}
+
+	// For JS/CSS files: check build dir first (transpiled/compiled files)
+	if s.config.BuildDir != "" && (strings.HasSuffix(filePath, ".js") || strings.HasSuffix(filePath, ".css")) {
+		buildPath := filepath.Join(s.config.BuildDir, addonName, "static", filePath)
+		if _, err := os.Stat(buildPath); err == nil {
+			w.Header().Set("Cache-Control", "public, max-age=3600")
+			http.ServeFile(w, r, buildPath)
+			return
+		}
+	}
+
+	// Search through addon paths (original files)
+	for _, addonsDir := range s.config.OdooAddonsPath {
+		fullPath := filepath.Join(addonsDir, addonName, "static", filePath)
+		if _, err := os.Stat(fullPath); err == nil {
+			w.Header().Set("Cache-Control", "public, max-age=3600")
+
+			// Serve SCSS as compiled CSS if available
+			if strings.HasSuffix(fullPath, ".scss") && s.config.BuildDir != "" {
+				buildCSS := filepath.Join(s.config.BuildDir, addonName, "static", strings.TrimSuffix(filePath, ".scss")+".css")
+				if _, err := os.Stat(buildCSS); err == nil {
+					fullPath = buildCSS
+				}
+			}
+
+			http.ServeFile(w, r, fullPath)
+			return
+		}
+	}
+
+	http.NotFound(w, r)
+}

pkg/server/stubs.go

@@ -0,0 +1,45 @@
+package server
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+// handleSessionCheck returns null (session is valid if middleware passed).
+func (s *Server) handleSessionCheck(w http.ResponseWriter, r *http.Request) {
+	s.writeJSONRPC(w, nil, nil, nil)
+}
+
+// handleSessionModules returns installed module names.
+func (s *Server) handleSessionModules(w http.ResponseWriter, r *http.Request) {
+	s.writeJSONRPC(w, nil, []string{
+		"base", "web", "account", "sale", "stock", "purchase",
+		"hr", "project", "crm", "fleet", "l10n_de", "product",
+	}, nil)
+}
+
+// handleManifest returns a minimal PWA manifest.
+func (s *Server) handleManifest(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/manifest+json")
+	json.NewEncoder(w).Encode(map[string]interface{}{
+		"name":             "Odoo",
+		"short_name":       "Odoo",
+		"start_url":        "/web",
+		"display":          "standalone",
+		"background_color": "#71639e",
+		"theme_color":      "#71639e",
+		"icons": []map[string]string{
+			{"src": "/web/static/img/odoo-icon-192x192.png", "sizes": "192x192", "type": "image/png"},
+		},
+	})
+}
+
+// handleBootstrapTranslations returns empty translations for initial boot.
+func (s *Server) handleBootstrapTranslations(w http.ResponseWriter, r *http.Request) {
+	s.writeJSONRPC(w, nil, map[string]interface{}{
+		"lang":       "en_US",
+		"hash":       "empty",
+		"modules":    map[string]interface{}{},
+		"multi_lang": false,
+	}, nil)
+}

pkg/server/views.go

@@ -0,0 +1,173 @@
+package server
+
+import (
+	"fmt"
+	"strings"
+
+	"odoo-go/pkg/orm"
+)
+
+// handleGetViews implements the get_views method.
+// Mirrors: odoo/addons/base/models/ir_ui_view.py get_views()
+func handleGetViews(env *orm.Environment, model string, params CallKWParams) (interface{}, *RPCError) {
+	// Parse views list: [[false, "list"], [false, "form"], [false, "search"]]
+	var viewRequests [][]interface{}
+	if len(params.Args) > 0 {
+		if vr, ok := params.Args[0].([]interface{}); ok {
+			viewRequests = make([][]interface{}, len(vr))
+			for i, v := range vr {
+				if pair, ok := v.([]interface{}); ok {
+					viewRequests[i] = pair
+				}
+			}
+		}
+	}
+	// Also check kwargs
+	if viewRequests == nil {
+		if vr, ok := params.KW["views"].([]interface{}); ok {
+			viewRequests = make([][]interface{}, len(vr))
+			for i, v := range vr {
+				if pair, ok := v.([]interface{}); ok {
+					viewRequests[i] = pair
+				}
+			}
+		}
+	}
+
+	views := make(map[string]interface{})
+	for _, vr := range viewRequests {
+		if len(vr) < 2 {
+			continue
+		}
+		viewType, _ := vr[1].(string)
+		if viewType == "" {
+			continue
+		}
+
+		// Try to load from ir_ui_view table
+		arch := loadViewArch(env, model, viewType)
+		if arch == "" {
+			// Generate default view
+			arch = generateDefaultView(model, viewType)
+		}
+
+		views[viewType] = map[string]interface{}{
+			"arch":         arch,
+			"type":         viewType,
+			"model":        model,
+			"view_id":      0,
+			"field_parent":  false,
+		}
+	}
+
+	// Build models dict with field metadata
+	models := map[string]interface{}{
+		model: map[string]interface{}{
+			"fields": fieldsGetForModel(model),
+		},
+	}
+
+	return map[string]interface{}{
+		"views":  views,
+		"models": models,
+	}, nil
+}
+
+// loadViewArch tries to load a view from the ir_ui_view table.
+func loadViewArch(env *orm.Environment, model, viewType string) string {
+	var arch string
+	err := env.Tx().QueryRow(env.Ctx(),
+		`SELECT arch FROM ir_ui_view WHERE model = $1 AND type = $2 AND active = true ORDER BY priority LIMIT 1`,
+		model, viewType,
+	).Scan(&arch)
+	if err != nil {
+		return ""
+	}
+	return arch
+}
+
+// generateDefaultView creates a minimal view XML for a model.
+func generateDefaultView(modelName, viewType string) string {
+	m := orm.Registry.Get(modelName)
+	if m == nil {
+		return fmt.Sprintf("<%s><field name=\"id\"/></%s>", viewType, viewType)
+	}
+
+	switch viewType {
+	case "list", "tree":
+		return generateDefaultListView(m)
+	case "form":
+		return generateDefaultFormView(m)
+	case "search":
+		return generateDefaultSearchView(m)
+	case "kanban":
+		return generateDefaultKanbanView(m)
+	default:
+		return fmt.Sprintf("<%s><field name=\"id\"/></%s>", viewType, viewType)
+	}
+}
+
+func generateDefaultListView(m *orm.Model) string {
+	var fields []string
+	count := 0
+	for _, f := range m.Fields() {
+		if f.Name == "id" || !f.IsStored() || f.Name == "create_uid" || f.Name == "write_uid" ||
+			f.Name == "create_date" || f.Name == "write_date" || f.Type == orm.TypeBinary {
+			continue
+		}
+		fields = append(fields, fmt.Sprintf(`<field name="%s"/>`, f.Name))
+		count++
+		if count >= 8 {
+			break
+		}
+	}
+	return fmt.Sprintf("<list>\n  %s\n</list>", strings.Join(fields, "\n  "))
+}
+
+func generateDefaultFormView(m *orm.Model) string {
+	var fields []string
+	for _, f := range m.Fields() {
+		if f.Name == "id" || f.Name == "create_uid" || f.Name == "write_uid" ||
+			f.Name == "create_date" || f.Name == "write_date" || f.Type == orm.TypeBinary {
+			continue
+		}
+		if f.Type == orm.TypeOne2many || f.Type == orm.TypeMany2many {
+			continue // Skip relational fields in default form
+		}
+		fields = append(fields, fmt.Sprintf(`      <field name="%s"/>`, f.Name))
+		if len(fields) >= 20 {
+			break
+		}
+	}
+	return fmt.Sprintf("<form>\n  <sheet>\n    <group>\n%s\n    </group>\n  </sheet>\n</form>",
+		strings.Join(fields, "\n"))
+}
+
+func generateDefaultSearchView(m *orm.Model) string {
+	var fields []string
+	// Add name field if it exists
+	if f := m.GetField("name"); f != nil {
+		fields = append(fields, `<field name="name"/>`)
+	}
+	if f := m.GetField("email"); f != nil {
+		fields = append(fields, `<field name="email"/>`)
+	}
+	if len(fields) == 0 {
+		fields = append(fields, `<field name="id"/>`)
+	}
+	return fmt.Sprintf("<search>\n  %s\n</search>", strings.Join(fields, "\n  "))
+}
+
+func generateDefaultKanbanView(m *orm.Model) string {
+	nameField := "name"
+	if f := m.GetField("name"); f == nil {
+		nameField = "id"
+	}
+	return fmt.Sprintf(`<kanban>
+  <templates>
+    <t t-name="card">
+      <field name="%s"/>
+    </t>
+  </templates>
+</kanban>`, nameField)
+}

pkg/server/web_methods.go

@@ -0,0 +1,172 @@
+package server
+
+import (
+	"fmt"
+
+	"odoo-go/pkg/orm"
+)
+
+// handleWebSearchRead implements the web_search_read method.
+// Mirrors: odoo/addons/web/models/models.py web_search_read()
+// Returns {length: N, records: [...]} instead of just records.
+func handleWebSearchRead(env *orm.Environment, model string, params CallKWParams) (interface{}, *RPCError) {
+	rs := env.Model(model)
+
+	// Parse domain from first arg
+	domain := parseDomain(params.Args)
+
+	// Parse specification from kwargs
+	spec, _ := params.KW["specification"].(map[string]interface{})
+	fields := specToFields(spec)
+
+	// Always include id
+	hasID := false
+	for _, f := range fields {
+		if f == "id" {
+			hasID = true
+			break
+		}
+	}
+	if !hasID {
+		fields = append([]string{"id"}, fields...)
+	}
+
+	// Parse offset, limit, order
+	offset := 0
+	limit := 80
+	order := ""
+	if v, ok := params.KW["offset"].(float64); ok {
+		offset = int(v)
+	}
+	if v, ok := params.KW["limit"].(float64); ok {
+		limit = int(v)
+	}
+	if v, ok := params.KW["order"].(string); ok {
+		order = v
+	}
+
+	// Get total count
+	count, err := rs.SearchCount(domain)
+	if err != nil {
+		return nil, &RPCError{Code: -32000, Message: err.Error()}
+	}
+
+	// Search with offset/limit
+	found, err := rs.Search(domain, orm.SearchOpts{
+		Offset: offset,
+		Limit:  limit,
+		Order:  order,
+	})
+	if err != nil {
+		return nil, &RPCError{Code: -32000, Message: err.Error()}
+	}
+
+	var records []orm.Values
+	if !found.IsEmpty() {
+		records, err = found.Read(fields)
+		if err != nil {
+			return nil, &RPCError{Code: -32000, Message: err.Error()}
+		}
+	}
+
+	// Format M2O fields as {id, display_name} when spec requests it
+	formatM2OFields(env, model, records, spec)
+
+	if records == nil {
+		records = []orm.Values{}
+	}
+
+	return map[string]interface{}{
+		"length":  count,
+		"records": records,
+	}, nil
+}
+
+// handleWebRead implements the web_read method.
+// Mirrors: odoo/addons/web/models/models.py web_read()
+func handleWebRead(env *orm.Environment, model string, params CallKWParams) (interface{}, *RPCError) {
+	ids := parseIDs(params.Args)
+	if len(ids) == 0 {
+		return []orm.Values{}, nil
+	}
+
+	spec, _ := params.KW["specification"].(map[string]interface{})
+	fields := specToFields(spec)
+
+	rs := env.Model(model)
+	records, err := rs.Browse(ids...).Read(fields)
+	if err != nil {
+		return nil, &RPCError{Code: -32000, Message: err.Error()}
+	}
+
+	formatM2OFields(env, model, records, spec)
+
+	if records == nil {
+		records = []orm.Values{}
+	}
+	return records, nil
+}
+
+// specToFields extracts field names from a specification dict.
+// {"name": {}, "partner_id": {"fields": {"display_name": {}}}} → ["name", "partner_id"]
+func specToFields(spec map[string]interface{}) []string {
+	if len(spec) == 0 {
+		return nil
+	}
+	fields := make([]string, 0, len(spec))
+	for name := range spec {
+		fields = append(fields, name)
+	}
+	return fields
+}
+
+// formatM2OFields converts Many2one field values from raw int to {id, display_name}.
+func formatM2OFields(env *orm.Environment, modelName string, records []orm.Values, spec map[string]interface{}) {
+	m := orm.Registry.Get(modelName)
+	if m == nil || spec == nil {
+		return
+	}
+
+	for _, rec := range records {
+		for fieldName, fieldSpec := range spec {
+			f := m.GetField(fieldName)
+			if f == nil || f.Type != orm.TypeMany2one {
+				continue
+			}
+
+			// Accept any spec entry for M2O fields (even empty {} means include it)
+			_, ok := fieldSpec.(map[string]interface{})
+			if !ok {
+				continue
+			}
+
+			// Get the raw FK ID
+			rawID := rec[fieldName]
+			fkID := int64(0)
+			switch v := rawID.(type) {
+			case int64:
+				fkID = v
+			case int32:
+				fkID = int64(v)
+			case float64:
+				fkID = int64(v)
+			}
+
+			if fkID == 0 {
+				rec[fieldName] = false // Odoo convention for empty M2O
+				continue
+			}
+
+			// Fetch display_name from comodel — return as [id, "name"] array
+			if f.Comodel != "" {
+				coRS := env.Model(f.Comodel).Browse(fkID)
+				names, err := coRS.NameGet()
+				if err == nil && len(names) > 0 {
+					rec[fieldName] = []interface{}{fkID, names[fkID]}
+				} else {
+					rec[fieldName] = []interface{}{fkID, fmt.Sprintf("%s,%d", f.Comodel, fkID)}
+				}
+			}
+		}
+	}
+}

pkg/server/webclient.go

@@ -0,0 +1,264 @@
+package server
+
+import (
+	"bufio"
+	"embed"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"odoo-go/pkg/tools"
+)
+
+//go:embed assets_js.txt
+var assetsJSFile embed.FS
+
+//go:embed assets_css.txt
+var assetsCSSFile embed.FS
+
+//go:embed assets_xml.txt
+var assetsXMLFile embed.FS
+
+var jsFiles []string
+var cssFiles []string
+var xmlFiles []string
+
+func init() {
+	jsFiles = loadAssetList("assets_js.txt", assetsJSFile)
+	cssFiles = loadAssetList("assets_css.txt", assetsCSSFile)
+	xmlFiles = loadAssetList("assets_xml.txt", assetsXMLFile)
+}
+
+// loadXMLTemplate reads an XML template file from the Odoo addons paths.
+func loadXMLTemplate(cfg *tools.Config, urlPath string) string {
+	rel := strings.TrimPrefix(urlPath, "/")
+	for _, addonsDir := range cfg.OdooAddonsPath {
+		fullPath := filepath.Join(addonsDir, rel)
+		data, err := os.ReadFile(fullPath)
+		if err == nil {
+			return string(data)
+		}
+	}
+	return ""
+}
+
+func loadAssetList(name string, fs embed.FS) []string {
+	data, err := fs.ReadFile(name)
+	if err != nil {
+		return nil
+	}
+	var files []string
+	scanner := bufio.NewScanner(strings.NewReader(string(data)))
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		if line != "" && !strings.HasPrefix(line, "#") {
+			files = append(files, line)
+		}
+	}
+	return files
+}
+
+// handleWebClient serves the Odoo webclient HTML shell.
+// Mirrors: odoo/addons/web/controllers/home.py Home.web_client()
+func (s *Server) handleWebClient(w http.ResponseWriter, r *http.Request) {
+	// Check if setup is needed
+	if s.isSetupNeeded() {
+		http.Redirect(w, r, "/web/setup", http.StatusFound)
+		return
+	}
+
+	// Check authentication
+	sess := GetSession(r)
+	if sess == nil {
+		// Try cookie directly
+		cookie, err := r.Cookie("session_id")
+		if err != nil || cookie.Value == "" {
+			http.Redirect(w, r, "/web/login", http.StatusFound)
+			return
+		}
+		sess = s.sessions.Get(cookie.Value)
+		if sess == nil {
+			http.Redirect(w, r, "/web/login", http.StatusFound)
+			return
+		}
+	}
+
+	sessionInfo := s.buildSessionInfo(sess)
+	sessionInfoJSON, _ := json.Marshal(sessionInfo)
+
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.Header().Set("Cache-Control", "no-store")
+
+	// Build script tags for all JS files (with cache buster)
+	var scriptTags strings.Builder
+	cacheBuster := "?v=odoo-go-1"
+	for _, src := range jsFiles {
+		if strings.HasSuffix(src, ".scss") {
+			continue
+		}
+		scriptTags.WriteString(fmt.Sprintf("    <script type=\"text/javascript\" src=\"%s%s\"></script>\n", src, cacheBuster))
+	}
+
+	// Build link tags for CSS: compiled SCSS bundle + individual CSS files
+	var linkTags strings.Builder
+	// Main compiled SCSS bundle (Bootstrap + Odoo core styles)
+	linkTags.WriteString(fmt.Sprintf("    <link rel=\"stylesheet\" href=\"/web/static/odoo_web.css%s\"/>\n", cacheBuster))
+	// Additional plain CSS files
+	for _, src := range cssFiles {
+		if strings.HasSuffix(src, ".css") {
+			linkTags.WriteString(fmt.Sprintf("    <link rel=\"stylesheet\" href=\"%s%s\"/>\n", src, cacheBuster))
+		}
+	}
+
+	// XML templates are compiled to JS (registerTemplate calls) and included
+	// in the JS bundle as xml_templates_bundle.js — no inline XML needed.
+
+	fmt.Fprintf(w, `<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8"/>
+    <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1"/>
+    <title>Odoo</title>
+    <link rel="shortcut icon" href="/web/static/img/favicon.ico" type="image/x-icon"/>
+
+%s
+    <script>
+    var odoo = {
+        csrf_token: "dummy",
+        debug: "assets",
+        __session_info__: %s,
+        reloadMenus: function() {
+            return fetch("/web/webclient/load_menus", {
+                method: "GET",
+                headers: {"Content-Type": "application/json"}
+            }).then(function(r) { return r.json(); });
+        }
+    };
+    odoo.loadMenusPromise = odoo.reloadMenus();
+
+    // Patch OWL to prevent infinite error-dialog recursion.
+    // When ErrorDialog itself fails to render, stop retrying.
+    window.__errorDialogCount = 0;
+    var _origHandleError = null;
+    document.addEventListener('DOMContentLoaded', function() {
+        if (typeof owl !== 'undefined' && owl.App) {
+            _origHandleError = owl.App.prototype.handleError;
+            owl.App.prototype.handleError = function() {
+                window.__errorDialogCount++;
+                if (window.__errorDialogCount > 3) {
+                    console.error('[odoo-go] Error dialog recursion stopped. Check earlier errors for root cause.');
+                    return;
+                }
+                return _origHandleError.apply(this, arguments);
+            };
+        }
+    });
+    </script>
+
+%s</head>
+<body class="o_web_client">
+</body>
+</html>`, linkTags.String(), sessionInfoJSON, scriptTags.String())
+}
+
+// buildSessionInfo constructs the session_info JSON object expected by the webclient.
+// Mirrors: odoo/addons/web/models/ir_http.py session_info()
+func (s *Server) buildSessionInfo(sess *Session) map[string]interface{} {
+	return map[string]interface{}{
+		"uid":              sess.UID,
+		"is_system":        sess.UID == 1,
+		"is_admin":         sess.UID == 1,
+		"is_public":        false,
+		"is_internal_user": true,
+		"user_context": map[string]interface{}{
+			"lang":                "en_US",
+			"tz":                 "UTC",
+			"allowed_company_ids": []int64{sess.CompanyID},
+		},
+		"db":                   s.config.DBName,
+		"registry_hash":        "odoo-go-static",
+		"server_version":       "19.0-go",
+		"server_version_info":  []interface{}{19, 0, 0, "final", 0, "g"},
+		"name":                 sess.Login,
+		"username":             sess.Login,
+		"partner_id":           sess.UID + 1, // Simplified mapping
+		"partner_display_name": sess.Login,
+		"partner_write_date":   "2026-01-01 00:00:00",
+		"quick_login":          true,
+		"web.base.url":         fmt.Sprintf("http://localhost:%d", s.config.HTTPPort),
+		"active_ids_limit":     20000,
+		"max_file_upload_size": 134217728,
+		"home_action_id":       false,
+		"support_url":          "",
+		"test_mode":            false,
+		"show_effect":          true,
+		"currencies": map[string]interface{}{
+			"1": map[string]interface{}{
+				"id": 1, "name": "EUR", "symbol": "€",
+				"position": "after", "digits": []int{69, 2},
+			},
+		},
+		"bundle_params": map[string]interface{}{
+			"lang":  "en_US",
+			"debug": "assets",
+		},
+		"user_companies": map[string]interface{}{
+			"current_company": sess.CompanyID,
+			"allowed_companies": map[string]interface{}{
+				fmt.Sprintf("%d", sess.CompanyID): map[string]interface{}{
+					"id":          sess.CompanyID,
+					"name":        "My Company",
+					"sequence":    10,
+					"child_ids":   []int64{},
+					"parent_id":   false,
+					"currency_id": 1,
+				},
+			},
+			"disallowed_ancestor_companies": map[string]interface{}{},
+		},
+		"user_settings": map[string]interface{}{
+			"id":      1,
+			"user_id": map[string]interface{}{"id": sess.UID, "display_name": sess.Login},
+		},
+		"view_info": map[string]interface{}{
+			"list":     map[string]interface{}{"display_name": "List", "icon": "oi oi-view-list", "multi_record": true},
+			"form":     map[string]interface{}{"display_name": "Form", "icon": "fa fa-address-card", "multi_record": false},
+			"kanban":   map[string]interface{}{"display_name": "Kanban", "icon": "oi oi-view-kanban", "multi_record": true},
+			"graph":    map[string]interface{}{"display_name": "Graph", "icon": "fa fa-area-chart", "multi_record": true},
+			"pivot":    map[string]interface{}{"display_name": "Pivot", "icon": "oi oi-view-pivot", "multi_record": true},
+			"calendar": map[string]interface{}{"display_name": "Calendar", "icon": "fa fa-calendar", "multi_record": true},
+			"search":   map[string]interface{}{"display_name": "Search", "icon": "oi oi-search", "multi_record": true},
+		},
+		"groups": map[string]interface{}{
+			"base.group_allow_export": true,
+			"base.group_user":         true,
+			"base.group_system":       true,
+		},
+	}
+}
+
+// handleTranslations returns empty English translations.
+// Mirrors: odoo/addons/web/controllers/webclient.py translations()
+func (s *Server) handleTranslations(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Cache-Control", "public, max-age=3600")
+	json.NewEncoder(w).Encode(map[string]interface{}{
+		"lang": "en_US",
+		"hash": "odoo-go-empty",
+		"lang_parameters": map[string]interface{}{
+			"direction":     "ltr",
+			"date_format":   "%%m/%%d/%%Y",
+			"time_format":   "%%H:%%M:%%S",
+			"grouping":      "[3,0]",
+			"decimal_point":  ".",
+			"thousands_sep": ",",
+			"week_start":    1,
+		},
+		"modules":    map[string]interface{}{},
+		"multi_lang": false,
+	})
+}

pkg/service/db.go

@@ -0,0 +1,402 @@
+// Package service provides database and model services.
+// Mirrors: odoo/service/db.py
+package service
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	l10n_de "odoo-go/addons/l10n_de"
+	"odoo-go/pkg/orm"
+	"odoo-go/pkg/tools"
+)
+
+// InitDatabase creates all tables for registered models.
+// Mirrors: odoo/modules/loading.py load_module_graph() → model._setup_base()
+func InitDatabase(ctx context.Context, pool *pgxpool.Pool) error {
+	tx, err := pool.Begin(ctx)
+	if err != nil {
+		return fmt.Errorf("db: begin: %w", err)
+	}
+	defer tx.Rollback(ctx)
+
+	models := orm.Registry.Models()
+
+	// Phase 1: Create tables
+	for name, m := range models {
+		if m.IsAbstract() {
+			continue
+		}
+		sql := m.CreateTableSQL()
+		if sql == "" {
+			continue
+		}
+		log.Printf("db: creating table for %s", name)
+		if _, err := tx.Exec(ctx, sql); err != nil {
+			return fmt.Errorf("db: create table %s: %w", name, err)
+		}
+	}
+
+	// Phase 2: Add foreign keys (after all tables exist, each in savepoint)
+	for name, m := range models {
+		if m.IsAbstract() {
+			continue
+		}
+		for _, sql := range m.ForeignKeySQL() {
+			sp, spErr := tx.Begin(ctx)
+			if spErr != nil {
+				continue
+			}
+			wrappedSQL := fmt.Sprintf(
+				`DO $$ BEGIN %s; EXCEPTION WHEN duplicate_object THEN NULL; END $$`,
+				sql,
+			)
+			if _, err := sp.Exec(ctx, wrappedSQL); err != nil {
+				log.Printf("db: warning: FK for %s: %v", name, err)
+				sp.Rollback(ctx)
+			} else {
+				log.Printf("db: adding FK for %s", name)
+				sp.Commit(ctx)
+			}
+		}
+	}
+
+	// Phase 3: Create indexes (each in savepoint)
+	for _, m := range models {
+		if m.IsAbstract() {
+			continue
+		}
+		for _, sql := range m.IndexSQL() {
+			sp, spErr := tx.Begin(ctx)
+			if spErr != nil {
+				continue
+			}
+			if _, err := sp.Exec(ctx, sql); err != nil {
+				log.Printf("db: warning: index: %v", err)
+				sp.Rollback(ctx)
+			} else {
+				sp.Commit(ctx)
+			}
+		}
+	}
+
+	// Phase 4: Create Many2many junction tables (each in savepoint to avoid aborting tx)
+	for _, m := range models {
+		if m.IsAbstract() {
+			continue
+		}
+		for _, sql := range m.Many2manyTableSQL() {
+			sp, spErr := tx.Begin(ctx)
+			if spErr != nil {
+				continue
+			}
+			if _, err := sp.Exec(ctx, sql); err != nil {
+				log.Printf("db: warning: m2m table: %v", err)
+				sp.Rollback(ctx)
+			} else {
+				sp.Commit(ctx)
+			}
+		}
+	}
+
+	if err := tx.Commit(ctx); err != nil {
+		return fmt.Errorf("db: commit: %w", err)
+	}
+
+	log.Printf("db: schema initialized for %d models", len(models))
+	return nil
+}
+
+// NeedsSetup checks if the database requires initial setup.
+func NeedsSetup(ctx context.Context, pool *pgxpool.Pool) bool {
+	var count int
+	err := pool.QueryRow(ctx, `SELECT COUNT(*) FROM res_company`).Scan(&count)
+	return err != nil || count == 0
+}
+
+// SetupConfig holds parameters for the setup wizard.
+type SetupConfig struct {
+	CompanyName   string
+	Street        string
+	Zip           string
+	City          string
+	CountryCode   string
+	CountryName   string
+	PhoneCode     string
+	Email         string
+	Phone         string
+	VAT           string
+	Chart         string // "skr03", "skr04", "none"
+	AdminLogin    string
+	AdminPassword string // Already hashed with bcrypt
+	DemoData      bool
+}
+
+// SeedWithSetup initializes the database with user-provided configuration.
+func SeedWithSetup(ctx context.Context, pool *pgxpool.Pool, cfg SetupConfig) error {
+	tx, err := pool.Begin(ctx)
+	if err != nil {
+		return fmt.Errorf("db: begin: %w", err)
+	}
+	defer tx.Rollback(ctx)
+
+	log.Printf("db: seeding database for %q...", cfg.CompanyName)
+
+	// 1. Currency (EUR)
+	_, err = tx.Exec(ctx, `
+		INSERT INTO res_currency (id, name, symbol, decimal_places, rounding, active, "position")
+		VALUES (1, 'EUR', '€', 2, 0.01, true, 'after')
+		ON CONFLICT (id) DO NOTHING`)
+	if err != nil {
+		return fmt.Errorf("db: seed currency: %w", err)
+	}
+
+	// 2. Country
+	_, err = tx.Exec(ctx, `
+		INSERT INTO res_country (id, name, code, phone_code)
+		VALUES (1, $1, $2, $3)
+		ON CONFLICT (id) DO NOTHING`, cfg.CountryName, cfg.CountryCode, cfg.PhoneCode)
+	if err != nil {
+		return fmt.Errorf("db: seed country: %w", err)
+	}
+
+	// 3. Company partner
+	_, err = tx.Exec(ctx, `
+		INSERT INTO res_partner (id, name, is_company, active, type, lang, email, phone, street, zip, city, country_id, vat)
+		VALUES (1, $1, true, true, 'contact', 'de_DE', $2, $3, $4, $5, $6, 1, $7)
+		ON CONFLICT (id) DO NOTHING`,
+		cfg.CompanyName, cfg.Email, cfg.Phone, cfg.Street, cfg.Zip, cfg.City, cfg.VAT)
+	if err != nil {
+		return fmt.Errorf("db: seed company partner: %w", err)
+	}
+
+	// 4. Company
+	_, err = tx.Exec(ctx, `
+		INSERT INTO res_company (id, name, partner_id, currency_id, country_id, active, sequence, street, zip, city, email, phone, vat)
+		VALUES (1, $1, 1, 1, 1, true, 10, $2, $3, $4, $5, $6, $7)
+		ON CONFLICT (id) DO NOTHING`,
+		cfg.CompanyName, cfg.Street, cfg.Zip, cfg.City, cfg.Email, cfg.Phone, cfg.VAT)
+	if err != nil {
+		return fmt.Errorf("db: seed company: %w", err)
+	}
+
+	// 5. Admin partner
+	adminName := "Administrator"
+	_, err = tx.Exec(ctx, `
+		INSERT INTO res_partner (id, name, is_company, active, type, email, lang)
+		VALUES (2, $1, false, true, 'contact', $2, 'de_DE')
+		ON CONFLICT (id) DO NOTHING`, adminName, cfg.AdminLogin)
+	if err != nil {
+		return fmt.Errorf("db: seed admin partner: %w", err)
+	}
+
+	// 6. Admin user
+	_, err = tx.Exec(ctx, `
+		INSERT INTO res_users (id, login, password, active, partner_id, company_id)
+		VALUES (1, $1, $2, true, 2, 1)
+		ON CONFLICT (id) DO NOTHING`, cfg.AdminLogin, cfg.AdminPassword)
+	if err != nil {
+		return fmt.Errorf("db: seed admin user: %w", err)
+	}
+
+	// 7. Journals
+	_, err = tx.Exec(ctx, `
+		INSERT INTO account_journal (id, name, code, type, company_id, active, sequence) VALUES
+			(1, 'Ausgangsrechnungen', 'INV', 'sale', 1, true, 10),
+			(2, 'Eingangsrechnungen', 'BILL', 'purchase', 1, true, 20),
+			(3, 'Bank', 'BNK1', 'bank', 1, true, 30),
+			(4, 'Kasse', 'CSH1', 'cash', 1, true, 40),
+			(5, 'Sonstige', 'MISC', 'general', 1, true, 50)
+		ON CONFLICT (id) DO NOTHING`)
+	if err != nil {
+		return fmt.Errorf("db: seed journals: %w", err)
+	}
+
+	// 8. Sequences
+	_, err = tx.Exec(ctx, `
+		INSERT INTO ir_sequence (id, name, code, prefix, padding, number_next, number_increment, active, implementation) VALUES
+			(1, 'Buchungssatz', 'account.move', 'MISC/', 4, 1, 1, true, 'standard'),
+			(2, 'Ausgangsrechnung', 'account.move.out_invoice', 'RE/%(year)s/', 4, 1, 1, true, 'standard'),
+			(3, 'Eingangsrechnung', 'account.move.in_invoice', 'ER/%(year)s/', 4, 1, 1, true, 'standard'),
+			(4, 'Angebot', 'sale.order', 'AG', 4, 1, 1, true, 'standard'),
+			(5, 'Bestellung', 'purchase.order', 'BE', 4, 1, 1, true, 'standard')
+		ON CONFLICT (id) DO NOTHING`)
+	if err != nil {
+		return fmt.Errorf("db: seed sequences: %w", err)
+	}
+
+	// 9. Chart of Accounts (if selected)
+	if cfg.Chart == "skr03" || cfg.Chart == "skr04" {
+		// Currently only SKR03 is implemented
+		for _, acc := range l10n_de.SKR03Accounts {
+			tx.Exec(ctx, `
+				INSERT INTO account_account (code, name, account_type, company_id, reconcile)
+				VALUES ($1, $2, $3, 1, $4) ON CONFLICT DO NOTHING`,
+				acc.Code, acc.Name, acc.AccountType, acc.Reconcile)
+		}
+		log.Printf("db: seeded %d SKR03 accounts", len(l10n_de.SKR03Accounts))
+
+		// Taxes
+		for _, tax := range l10n_de.SKR03Taxes {
+			tx.Exec(ctx, `
+				INSERT INTO account_tax (name, amount, type_tax_use, amount_type, company_id, active, sequence, is_base_affected)
+				VALUES ($1, $2, $3, 'percent', 1, true, 1, true) ON CONFLICT DO NOTHING`,
+				tax.Name, tax.Amount, tax.TypeUse)
+		}
+		log.Printf("db: seeded %d German tax definitions", len(l10n_de.SKR03Taxes))
+	}
+
+	// 10. UI Views for key models
+	seedViews(ctx, tx)
+
+	// 11. Demo data
+	if cfg.DemoData {
+		seedDemoData(ctx, tx)
+	}
+
+	// 11. Reset sequences
+	tx.Exec(ctx, `
+		SELECT setval('res_currency_id_seq', (SELECT COALESCE(MAX(id),0) FROM res_currency));
+		SELECT setval('res_country_id_seq', (SELECT COALESCE(MAX(id),0) FROM res_country));
+		SELECT setval('res_partner_id_seq', (SELECT COALESCE(MAX(id),0) FROM res_partner));
+		SELECT setval('res_company_id_seq', (SELECT COALESCE(MAX(id),0) FROM res_company));
+		SELECT setval('res_users_id_seq', (SELECT COALESCE(MAX(id),0) FROM res_users));
+		SELECT setval('ir_sequence_id_seq', (SELECT COALESCE(MAX(id),0) FROM ir_sequence));
+		SELECT setval('account_journal_id_seq', (SELECT COALESCE(MAX(id),0) FROM account_journal));
+		SELECT setval('account_account_id_seq', (SELECT COALESCE(MAX(id),0) FROM account_account));
+		SELECT setval('account_tax_id_seq', (SELECT COALESCE(MAX(id),0) FROM account_tax));
+	`)
+
+	if err := tx.Commit(ctx); err != nil {
+		return fmt.Errorf("db: commit seed: %w", err)
+	}
+
+	log.Printf("db: database seeded successfully for %q", cfg.CompanyName)
+	return nil
+}
+
+// seedViews creates UI views for key models.
+func seedViews(ctx context.Context, tx pgx.Tx) {
+	log.Println("db: seeding UI views...")
+
+	tx.Exec(ctx, `INSERT INTO ir_ui_view (name, model, type, arch, priority, active, mode) VALUES
+		-- res.partner views
+		('partner.list', 'res.partner', 'list', '<list>
+  <field name="name"/>
+  <field name="email"/>
+  <field name="phone"/>
+  <field name="city"/>
+  <field name="country_id"/>
+  <field name="is_company"/>
+</list>', 16, true, 'primary'),
+		('partner.form', 'res.partner', 'form', '<form>
+  <sheet>
+    <group>
+      <group>
+        <field name="name"/>
+        <field name="is_company"/>
+        <field name="type"/>
+        <field name="email"/>
+        <field name="phone"/>
+        <field name="mobile"/>
+        <field name="website"/>
+      </group>
+      <group>
+        <field name="street"/>
+        <field name="street2"/>
+        <field name="zip"/>
+        <field name="city"/>
+        <field name="country_id"/>
+        <field name="vat"/>
+        <field name="lang"/>
+      </group>
+    </group>
+    <notebook>
+      <page string="Internal Notes">
+        <field name="comment"/>
+      </page>
+    </notebook>
+  </sheet>
+</form>', 16, true, 'primary'),
+		('partner.search', 'res.partner', 'search', '<search>
+  <field name="name"/>
+  <field name="email"/>
+  <field name="phone"/>
+  <field name="city"/>
+</search>', 16, true, 'primary'),
+
+		-- account.move views
+		('invoice.list', 'account.move', 'list', '<list>
+  <field name="name"/>
+  <field name="partner_id"/>
+  <field name="invoice_date"/>
+  <field name="date"/>
+  <field name="move_type"/>
+  <field name="state"/>
+  <field name="amount_total"/>
+</list>', 16, true, 'primary'),
+
+		-- sale.order views
+		('sale.list', 'sale.order', 'list', '<list>
+  <field name="name"/>
+  <field name="partner_id"/>
+  <field name="date_order"/>
+  <field name="state"/>
+  <field name="amount_total"/>
+</list>', 16, true, 'primary')
+	ON CONFLICT DO NOTHING`)
+
+	log.Println("db: UI views seeded")
+}
+
+// seedDemoData creates example records for testing.
+func seedDemoData(ctx context.Context, tx pgx.Tx) {
+	log.Println("db: loading demo data...")
+
+	// Demo customers
+	tx.Exec(ctx, `INSERT INTO res_partner (name, is_company, active, type, email, city, lang) VALUES
+		('Müller Bau GmbH', true, true, 'contact', 'info@mueller-bau.de', 'München', 'de_DE'),
+		('Schmidt & Söhne KG', true, true, 'contact', 'kontakt@schmidt-soehne.de', 'Hamburg', 'de_DE'),
+		('Weber Elektro AG', true, true, 'contact', 'info@weber-elektro.de', 'Frankfurt', 'de_DE'),
+		('Fischer Metallbau', true, true, 'contact', 'office@fischer-metall.de', 'Stuttgart', 'de_DE'),
+		('Hoffmann IT Services', true, true, 'contact', 'hello@hoffmann-it.de', 'Berlin', 'de_DE')
+		ON CONFLICT DO NOTHING`)
+
+	// Demo contacts (employees of customers)
+	tx.Exec(ctx, `INSERT INTO res_partner (name, is_company, active, type, email, phone, lang) VALUES
+		('Thomas Müller', false, true, 'contact', 'thomas@mueller-bau.de', '+49 89 1234567', 'de_DE'),
+		('Anna Schmidt', false, true, 'contact', 'anna@schmidt-soehne.de', '+49 40 9876543', 'de_DE'),
+		('Peter Weber', false, true, 'contact', 'peter@weber-elektro.de', '+49 69 5551234', 'de_DE')
+		ON CONFLICT DO NOTHING`)
+
+	log.Println("db: demo data loaded (8 demo contacts)")
+}
+
+// SeedBaseData is the legacy function — redirects to setup with defaults.
+// Used when running without the setup wizard (e.g., Docker auto-start).
+func SeedBaseData(ctx context.Context, pool *pgxpool.Pool) error {
+	if !NeedsSetup(ctx, pool) {
+		log.Println("db: base data already exists, skipping seed")
+		return nil
+	}
+
+	adminHash, _ := tools.HashPassword("admin")
+	return SeedWithSetup(ctx, pool, SetupConfig{
+		CompanyName:   "My Company",
+		Street:        "",
+		Zip:           "",
+		City:          "",
+		CountryCode:   "DE",
+		CountryName:   "Germany",
+		PhoneCode:     "49",
+		Email:         "admin@example.com",
+		Chart:         "skr03",
+		AdminLogin:    "admin",
+		AdminPassword: adminHash,
+		DemoData:      false,
+	})
+}

pkg/tools/auth.go

@@ -0,0 +1,15 @@
+package tools
+
+import "golang.org/x/crypto/bcrypt"
+
+// HashPassword hashes a password using bcrypt.
+func HashPassword(password string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	return string(bytes), err
+}
+
+// CheckPassword verifies a password against a bcrypt hash.
+func CheckPassword(hashed, password string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hashed), []byte(password))
+	return err == nil
+}

pkg/tools/config.go

@@ -0,0 +1,116 @@
+// Package tools provides configuration and utility functions.
+// Mirrors: odoo/tools/config.py
+package tools
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// Config holds the server configuration.
+// Mirrors: odoo/tools/config.py configmanager
+type Config struct {
+	// Database
+	DBHost     string
+	DBPort     int
+	DBUser     string
+	DBPassword string
+	DBName     string
+	DBSSLMode  string
+
+	// Server
+	HTTPInterface string
+	HTTPPort      int
+	Workers       int
+	DataDir       string
+
+	// Modules
+	AddonsPath     []string
+	OdooAddonsPath []string // Paths to Odoo source addon directories (for static files)
+	BuildDir       string   // Directory for compiled assets (SCSS→CSS)
+	WithoutDemo    bool
+
+	// Logging
+	LogLevel string
+
+	// Limits
+	LimitMemorySoft int64
+	LimitTimeReal   int
+}
+
+// DefaultConfig returns a configuration with default values.
+// Mirrors: odoo/tools/config.py _default_options
+func DefaultConfig() *Config {
+	return &Config{
+		DBHost:        "localhost",
+		DBPort:        5432,
+		DBUser:        "odoo",
+		DBPassword:    "odoo",
+		DBName:        "odoo",
+		DBSSLMode:     "disable",
+		HTTPInterface: "0.0.0.0",
+		HTTPPort:      8069,
+		Workers:       0,
+		DataDir:       "/var/lib/odoo",
+		LogLevel:      "info",
+	}
+}
+
+// LoadFromEnv overrides config values from environment variables.
+// Mirrors: odoo/tools/config.py _env_options (ODOO_* prefix)
+func (c *Config) LoadFromEnv() {
+	if v := os.Getenv("ODOO_DB_HOST"); v != "" {
+		c.DBHost = v
+	}
+	// Also support Docker-style env vars (HOST, USER, PASSWORD)
+	if v := os.Getenv("HOST"); v != "" {
+		c.DBHost = v
+	}
+	if v := os.Getenv("ODOO_DB_PORT"); v != "" {
+		if port, err := strconv.Atoi(v); err == nil {
+			c.DBPort = port
+		}
+	}
+	if v := os.Getenv("ODOO_DB_USER"); v != "" {
+		c.DBUser = v
+	}
+	if v := os.Getenv("USER"); v != "" && os.Getenv("ODOO_DB_USER") == "" {
+		c.DBUser = v
+	}
+	if v := os.Getenv("ODOO_DB_PASSWORD"); v != "" {
+		c.DBPassword = v
+	}
+	if v := os.Getenv("PASSWORD"); v != "" && os.Getenv("ODOO_DB_PASSWORD") == "" {
+		c.DBPassword = v
+	}
+	if v := os.Getenv("ODOO_DB_NAME"); v != "" {
+		c.DBName = v
+	}
+	if v := os.Getenv("ODOO_HTTP_PORT"); v != "" {
+		if port, err := strconv.Atoi(v); err == nil {
+			c.HTTPPort = port
+		}
+	}
+	if v := os.Getenv("ODOO_DATA_DIR"); v != "" {
+		c.DataDir = v
+	}
+	if v := os.Getenv("ODOO_LOG_LEVEL"); v != "" {
+		c.LogLevel = v
+	}
+	if v := os.Getenv("ODOO_ADDONS_PATH"); v != "" {
+		c.OdooAddonsPath = strings.Split(v, ",")
+	}
+	if v := os.Getenv("ODOO_BUILD_DIR"); v != "" {
+		c.BuildDir = v
+	}
+}
+
+// DSN returns the PostgreSQL connection string.
+func (c *Config) DSN() string {
+	return fmt.Sprintf(
+		"postgres://%s:%s@%s:%d/%s?sslmode=%s",
+		c.DBUser, c.DBPassword, c.DBHost, c.DBPort, c.DBName, c.DBSSLMode,
+	)
+}

pkg/tools/httpclient.go

@@ -0,0 +1,120 @@
+// Package tools provides a shared HTTP client for external API calls.
+package tools
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+// APIClient is a reusable HTTP client for external APIs.
+// All outbound calls go through this — no hidden network access.
+type APIClient struct {
+	client  *http.Client
+	baseURL string
+	apiKey  string
+}
+
+// NewAPIClient creates a client for an external API.
+func NewAPIClient(baseURL, apiKey string) *APIClient {
+	return &APIClient{
+		client: &http.Client{
+			Timeout: 10 * time.Second,
+		},
+		baseURL: strings.TrimRight(baseURL, "/"),
+		apiKey:  apiKey,
+	}
+}
+
+// Get performs a GET request with query parameters.
+func (c *APIClient) Get(path string, params map[string]string) ([]byte, error) {
+	u, err := url.Parse(c.baseURL + path)
+	if err != nil {
+		return nil, err
+	}
+
+	q := u.Query()
+	for k, v := range params {
+		q.Set(k, v)
+	}
+	if c.apiKey != "" {
+		q.Set("key", c.apiKey)
+	}
+	u.RawQuery = q.Encode()
+
+	resp, err := c.client.Get(u.String())
+	if err != nil {
+		return nil, fmt.Errorf("api: GET %s: %w", path, err)
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("api: GET %s returned %d: %s", path, resp.StatusCode, string(body[:min(200, len(body))]))
+	}
+
+	return body, nil
+}
+
+// GetJSON performs a GET and decodes the response as JSON.
+func (c *APIClient) GetJSON(path string, params map[string]string, result interface{}) error {
+	body, err := c.Get(path, params)
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(body, result)
+}
+
+// PostJSON performs a POST with JSON body and decodes the response.
+func (c *APIClient) PostJSON(path string, params map[string]string, reqBody, result interface{}) error {
+	u, err := url.Parse(c.baseURL + path)
+	if err != nil {
+		return err
+	}
+
+	q := u.Query()
+	for k, v := range params {
+		q.Set(k, v)
+	}
+	if c.apiKey != "" {
+		q.Set("key", c.apiKey)
+	}
+	u.RawQuery = q.Encode()
+
+	bodyBytes, err := json.Marshal(reqBody)
+	if err != nil {
+		return err
+	}
+
+	resp, err := c.client.Post(u.String(), "application/json", strings.NewReader(string(bodyBytes)))
+	if err != nil {
+		return fmt.Errorf("api: POST %s: %w", path, err)
+	}
+	defer resp.Body.Close()
+
+	respBody, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("api: POST %s returned %d: %s", path, resp.StatusCode, string(respBody[:min(200, len(respBody))]))
+	}
+
+	return json.Unmarshal(respBody, result)
+}
+
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}