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>

pkg/orm/compute.go

@@ -1,6 +1,9 @@
 package orm
 
-import "fmt"
+import (
+	"fmt"
+	"log"
+)
 
 // ComputeFunc is a function that computes field values for a recordset.
 // Mirrors: @api.depends decorated methods in Odoo.
@@ -253,7 +256,7 @@ func RunOnchangeComputes(m *Model, env *Environment, currentVals Values, changed
 
 		computed, err := fn(rs)
 		if err != nil {
-			// Non-fatal: skip failed computes during onchange
+			log.Printf("orm: onchange compute %s.%s failed: %v", m.Name(), fieldName, err)
 			continue
 		}
 		for k, v := range computed {