feat(hal): add EBDS bill validator driver for BATM3 support

Port MEI CashFlow SC / BNR Advance EBDS protocol from lamassu-machine
to TypeScript HAL. Adds 'batm3' machine model preset (EBDS validator +
F56 dispenser). Fixes hardcoded 'id003' validator type in device config
overrides so model presets correctly propagate their validator type.

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

apps/machine/electron/hal-service.ts

@@ -15,7 +15,7 @@ export interface CassetteConfig {
 
 export interface HalConfig {
   validator: {
-    type: 'id003'
+    type: 'id003' | 'ebds'
     device: string | string[]
     fiatCode: string
   }

apps/machine/electron/main.ts

@@ -390,6 +390,10 @@ app.whenReady().then(() => {
           { denomination: 100, count: 500 },
         ],
         gaia: [{ denomination: 20, count: 50 }],
+        batm3: [
+          { denomination: 20, count: 500 },
+          { denomination: 50, count: 500 },
+        ],
       }
       seedCassettes = presets[model] || []
     }