refactor: migrate all internal imports to package.json subpath aliases

- Add #domain, #protocol, #utils aliases to package.json imports map
- Replace all relative imports (./, ../, ../..) in app/ and
  database/mongo_migrations/ with the corresponding #alias imports,
  eliminating relative path traversal across the codebase
- Remove dead code: ConfigurationVersionModel.findByConfigurationIdentifier
  (unused, superseded by paginateVersions) and unused exception classes
  (NotFoundException, UnprocessableEntityException, DatabaseException)
  from app/exceptions/index.ts, keeping only BadRequestException
- Fix pre-existing syntax error in configuration_version.ts (mismatched
  parenthesis) that broke tsc
- Fix eqeqeq violation in configuration_service.ts and isNaN ->
  Number.isNaN in configuration_engine.ts / cwmp-1-0.ts / exchange_controller.ts
- Fix no-shadow violation in cwmp-1-0.ts EventStruct constructor
- Prettier formatting pass on touched files

Validated: tsc --noEmit clean, eslint app/ clean, full test suite green.

app/validators/configuration.ts

@@ -37,9 +37,15 @@ const scheduleWindowSchema = vine.object({
 
 export const createConfigurationValidator = vine.compile(
   vine.object({
-    identifier: vine.string().trim().regex(/^[a-zA-Z0-9]+(-[a-zA-Z0-9]+)*$/),
+    identifier: vine
+      .string()
+      .trim()
+      .regex(/^[a-zA-Z0-9]+(-[a-zA-Z0-9]+)*$/),
     name: vine.string().trim().minLength(1),
-    version: vine.string().trim().regex(/^\d+\.\d+\.\d+$/),
+    version: vine
+      .string()
+      .trim()
+      .regex(/^\d+\.\d+\.\d+$/),
     priority: vine.number().positive(),
     policy: vine.enum(['once', 'maintain']),
     enabled: vine.boolean().optional(),
@@ -55,7 +61,11 @@ export const createConfigurationValidator = vine.compile(
 export const updateConfigurationValidator = vine.compile(
   vine.object({
     name: vine.string().trim().minLength(1).optional(),
-    version: vine.string().trim().regex(/^\d+\.\d+\.\d+$/).optional(),
+    version: vine
+      .string()
+      .trim()
+      .regex(/^\d+\.\d+\.\d+$/)
+      .optional(),
     priority: vine.number().positive().optional(),
     policy: vine.enum(['once', 'maintain']).optional(),
     enabled: vine.boolean().optional(),

app/validators/firmware_catalog.ts

@@ -2,7 +2,10 @@ import vine from '@vinejs/vine'
 
 export const createFirmwareEntryValidator = vine.compile(
   vine.object({
-    identifier: vine.string().trim().regex(/^[a-z0-9]+(-[a-z0-9]+)*$/),
+    identifier: vine
+      .string()
+      .trim()
+      .regex(/^[a-z0-9]+(-[a-z0-9]+)*$/),
     productClass: vine.string().trim().minLength(1),
     version: vine.string().trim().minLength(1),
     downloadUrl: vine.string().trim().url(),
@@ -25,7 +28,10 @@ export const updateFirmwareEntryValidator = vine.compile(
 
 export const createMigrationRouteValidator = vine.compile(
   vine.object({
-    identifier: vine.string().trim().regex(/^[a-z0-9]+(-[a-z0-9]+)*$/),
+    identifier: vine
+      .string()
+      .trim()
+      .regex(/^[a-z0-9]+(-[a-z0-9]+)*$/),
     productClass: vine.string().trim().minLength(1),
     sourceVersionPattern: vine.string().trim().minLength(1),
     targetVersion: vine.string().trim().minLength(1),