feat(07-01): install DKV deps, add Prisma models, wire ScheduleModule + crypto export

- pnpm add imapflow@^1.4.3, pdf-parse@^2.4.5, xlsx@^0.18.5 to @tessera/api
- Append DkvModuleConfig, DkvVehicleMaster, DkvInvoiceHistory, SmtpConfig models to schema.prisma (15 models total)
- Add ScheduleModule.forRoot() to AppModule imports (prerequisite for DkvSchedulerService)
- Export CalendarCryptoService from CalendarModule (needed by DkvModule + SettingsModule)
- Create apps/api/src/dkv/dkv.types.ts with DkvVehicleBlock, DkvTransaction, InboxConfig, InboxEmail, InboxAttachment, ExportRow interfaces

apps/api/package.json

@@ -27,15 +27,18 @@
     "class-validator": "^0.15.1",
     "cookie-parser": "^1.4.7",
     "ews-javascript-api": "0.15.3",
+    "imapflow": "^1.4.3",
     "ldapts": "^8.1.8",
     "node-ical": "0.26.1",
     "nodemailer": "^9.0.1",
     "passport": "^0.7.0",
     "passport-jwt": "^4.0.1",
     "passport-local": "^1.0.0",
+    "pdf-parse": "^2.4.5",
     "reflect-metadata": "^0.2.0",
     "rxjs": "^7.0.0",
-    "tsdav": "2.2.2"
+    "tsdav": "2.2.2",
+    "xlsx": "^0.18.5"
   },
   "devDependencies": {
     "@nestjs/cli": "^11.0.0",