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_reconcile_model.go

@@ -1,6 +1,7 @@
 package models
 
 import (
+	"encoding/json"
 	"fmt"
 	"strings"
 
@@ -296,3 +297,73 @@ func applyWriteoffSuggestion(env *orm.Environment, modelID, stLineID int64, amou
 		"suggestions": suggestions,
 	}, nil
 }
+
+// initAccountReconcilePreview registers account.reconcile.model.preview (Odoo 18+).
+// Transient model for previewing reconciliation results before applying.
+// Mirrors: odoo/addons/account/wizard/account_reconcile_model_preview.py
+func initAccountReconcilePreview() {
+	m := orm.NewModel("account.reconcile.model.preview", orm.ModelOpts{
+		Description: "Reconcile Model Preview",
+		Type:        orm.ModelTransient,
+	})
+
+	m.AddFields(
+		orm.Many2one("model_id", "account.reconcile.model", orm.FieldOpts{
+			String: "Reconcile Model", Required: true,
+		}),
+		orm.Many2one("statement_line_id", "account.bank.statement.line", orm.FieldOpts{
+			String: "Statement Line",
+		}),
+		orm.Text("preview_data", orm.FieldOpts{
+			String: "Preview Data", Compute: "_compute_preview",
+		}),
+	)
+
+	m.RegisterCompute("preview_data", func(rs *orm.Recordset) (orm.Values, error) {
+		env := rs.Env()
+		id := rs.IDs()[0]
+
+		var modelID int64
+		var stLineID *int64
+		env.Tx().QueryRow(env.Ctx(),
+			`SELECT COALESCE(model_id, 0), statement_line_id
+			 FROM account_reconcile_model_preview WHERE id = $1`, id,
+		).Scan(&modelID, &stLineID)
+
+		if modelID == 0 {
+			return orm.Values{"preview_data": "[]"}, nil
+		}
+
+		// Read reconcile model lines to preview what would be created
+		rows, err := env.Tx().Query(env.Ctx(),
+			`SELECT rml.label, rml.amount_type, rml.amount,
+			        COALESCE(a.code, ''), COALESCE(a.name, '')
+			 FROM account_reconcile_model_line rml
+			 LEFT JOIN account_account a ON a.id = rml.account_id
+			 WHERE rml.model_id = $1
+			 ORDER BY rml.sequence`, modelID)
+		if err != nil {
+			return orm.Values{"preview_data": "[]"}, nil
+		}
+		defer rows.Close()
+
+		var preview []map[string]interface{}
+		for rows.Next() {
+			var label, amountType, accCode, accName string
+			var amount float64
+			if err := rows.Scan(&label, &amountType, &amount, &accCode, &accName); err != nil {
+				continue
+			}
+			preview = append(preview, map[string]interface{}{
+				"label":        label,
+				"amount_type":  amountType,
+				"amount":       amount,
+				"account_code": accCode,
+				"account_name": accName,
+			})
+		}
+
+		data, _ := json.Marshal(preview)
+		return orm.Values{"preview_data": string(data)}, nil
+	})
+}