Float management: bagged coins, history nav fix, change order sheet, upload 500 fix

- Fix history nav: type underscore → hyphen for route match
- Change tin: Bags + Loose inputs per denomination with UK bag values
- Change tin target: per-denomination bag count in Settings
- Change order sheet: inline table showing bags to order vs counted
- db: bag_quantity column on float_denominations
- api.ts: put text fields before file in FormData so busboy doesn't drain file stream early
- db.js: additive migration for uploaded_by column on cash_count_attachments

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

frontend/src/api.ts

@@ -28,9 +28,9 @@ export async function uploadAttachment(
   label?: string,
 ) {
   const fd = new FormData()
-  fd.append('file', file)
   fd.append('attachment_type', attachmentType)
   if (label) fd.append('label', label)
+  fd.append('file', file)
   const res = await fetch(`${BASE}/attachments/upload/${cashUpId}`, {
     method: 'POST',
     credentials: 'include',