feat(machine): record failed dispenses and per-cassette tracking

Failed dispenses (sats debited, cash not dispensed) were invisible —
transactions only recorded on 'complete'. Now records on 'dispenseError'
with status ('dispense_error'|'partial'|'complete'), error message, and
per-cassette detail.

Also fixes a bug in both HAL services where dispense results were mapped
by amounts-array index instead of cassette position, causing swapped
denomination counts when cassette order differs from request order.

Schema v3→v4: adds status/error columns to transactions, new
cassette_bills table for per-cassette provisioned/dispensed/rejected.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/machine/electron/preload.ts

@@ -55,9 +55,23 @@ contextBridge.exposeInMainWorld('electronAPI', {
   recordTransaction: (tx: {
     txid: string
     type: 'cash_in' | 'cash_out'
+    status: 'complete' | 'dispense_error' | 'partial'
     fiatCents: number
     sats: number
+    feeSats: number
+    feePercent: number
+    exchangeRate: number
+    currency: string
     bills: { denomination: number; count: number }[]
+    cassettes?: {
+      name: string
+      position: number
+      denomination: number
+      provisioned: number
+      dispensed: number
+      rejected: number
+    }[]
+    error?: string | null
   }) => ipcRenderer.invoke('state:record-transaction', tx),
   emptyCashbox: () => ipcRenderer.invoke('state:empty-cashbox'),
 
@@ -114,9 +128,23 @@ declare global {
       recordTransaction: (tx: {
         txid: string
         type: 'cash_in' | 'cash_out'
+        status: 'complete' | 'dispense_error' | 'partial'
         fiatCents: number
         sats: number
+        feeSats: number
+        feePercent: number
+        exchangeRate: number
+        currency: string
         bills: { denomination: number; count: number }[]
+        cassettes?: {
+          name: string
+          position: number
+          denomination: number
+          provisioned: number
+          dispensed: number
+          rejected: number
+        }[]
+        error?: string | null
       }) => Promise<void>
       emptyCashbox: () => Promise<void>
       // HAL hardware IPC