feat: Portal, Email Inbound, Discuss + module improvements

- Portal: /my/* routes, signup, password reset, portal user support
- Email Inbound: IMAP polling (go-imap/v2), thread matching
- Discuss: mail.channel, long-polling bus, DM, unread count
- Cron: ir.cron runner (goroutine scheduler)
- Bank Import, CSV/Excel Import
- Automation (ir.actions.server)
- Fetchmail service
- HR Payroll model
- Various fixes across account, sale, stock, purchase, crm, hr, project

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

addons/account/models/account_account.go

@@ -1,6 +1,10 @@
 package models
 
-import "odoo-go/pkg/orm"
+import (
+	"fmt"
+
+	"odoo-go/pkg/orm"
+)
 
 // initAccountAccount registers the chart of accounts.
 // Mirrors: odoo/addons/account/models/account_account.py
@@ -203,3 +207,95 @@ func initAccountFiscalPosition() {
 		orm.Many2many("country_ids", "res.country", orm.FieldOpts{String: "Countries"}),
 	)
 }
+
+// initAccountTaxComputes adds computed fields to account.tax for the tax computation engine.
+// Mirrors: odoo/addons/account/models/account_tax.py
+//
+// - is_base_affected: whether this tax's base is affected by previous taxes in the sequence
+// - repartition_line_ids: combined view of invoice + refund repartition lines
+func initAccountTaxComputes() {
+	ext := orm.ExtendModel("account.tax")
+
+	ext.AddFields(
+		orm.Boolean("computed_is_base_affected", orm.FieldOpts{
+			String:  "Base Affected (Computed)",
+			Compute: "_compute_is_base_affected",
+			Help:    "Computed: true when include_base_amount is set on a preceding tax in the same group",
+		}),
+		orm.Char("repartition_line_ids_json", orm.FieldOpts{
+			String:  "Repartition Lines (All)",
+			Compute: "_compute_repartition_line_ids",
+			Help:    "JSON list of all repartition line IDs (invoice + refund) for the tax engine",
+		}),
+	)
+
+	// _compute_is_base_affected: determines if this tax's base amount should be
+	// influenced by preceding taxes in the same tax group.
+	// Mirrors: odoo/addons/account/models/account_tax.py _compute_is_base_affected()
+	//
+	// A tax is base-affected when:
+	//   1. It belongs to a group tax (has parent_tax_id), AND
+	//   2. Any sibling tax with a lower sequence has include_base_amount=true
+	// Otherwise it falls back to the manual is_base_affected field value.
+	ext.RegisterCompute("computed_is_base_affected", func(rs *orm.Recordset) (orm.Values, error) {
+		env := rs.Env()
+		taxID := rs.IDs()[0]
+
+		var parentID *int64
+		var seq int64
+		var manualFlag bool
+		env.Tx().QueryRow(env.Ctx(),
+			`SELECT parent_tax_id, COALESCE(sequence, 0), COALESCE(is_base_affected, true)
+			 FROM account_tax WHERE id = $1`, taxID,
+		).Scan(&parentID, &seq, &manualFlag)
+
+		// If no parent group, use the manual field value
+		if parentID == nil || *parentID == 0 {
+			return orm.Values{"computed_is_base_affected": manualFlag}, nil
+		}
+
+		// Check if any preceding sibling in the group has include_base_amount=true
+		var count int
+		env.Tx().QueryRow(env.Ctx(),
+			`SELECT COUNT(*) FROM account_tax
+			 WHERE parent_tax_id = $1 AND sequence < $2
+			 AND include_base_amount = true AND id != $3`,
+			*parentID, seq, taxID,
+		).Scan(&count)
+
+		return orm.Values{"computed_is_base_affected": count > 0 || manualFlag}, nil
+	})
+
+	// _compute_repartition_line_ids: collects all repartition line IDs (invoice + refund)
+	// into a JSON array string for the tax computation engine.
+	// Mirrors: odoo/addons/account/models/account_tax.py _compute_repartition_line_ids()
+	ext.RegisterCompute("repartition_line_ids_json", func(rs *orm.Recordset) (orm.Values, error) {
+		env := rs.Env()
+		taxID := rs.IDs()[0]
+
+		rows, err := env.Tx().Query(env.Ctx(),
+			`SELECT id FROM account_tax_repartition_line
+			 WHERE tax_id = $1 ORDER BY sequence, id`, taxID)
+		if err != nil {
+			return orm.Values{"repartition_line_ids_json": "[]"}, nil
+		}
+		defer rows.Close()
+
+		result := "["
+		first := true
+		for rows.Next() {
+			var id int64
+			if err := rows.Scan(&id); err != nil {
+				continue
+			}
+			if !first {
+				result += ","
+			}
+			result += fmt.Sprintf("%d", id)
+			first = false
+		}
+		result += "]"
+
+		return orm.Values{"repartition_line_ids_json": result}, nil
+	})
+}