refactor(validation): use extracted normalizeRouteRecord service

- Remove local normalizeRouteRecord function from Validation.vue
- Import and use normalizeRouteRecord from services/routeNormalization
- Improves maintainability and enables dedicated testing
- No behavioral change, preserves all existing functionality

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

src/views/Validation.vue

@@ -137,6 +137,7 @@ import {
 	MODIFICATION_VIOLATION,
 	toValidationDocument,
 } from '../services/validationDocument'
+import { normalizeRouteRecord } from '../services/routeNormalization.js'
 import logger from '../logger.js'
 import { useFilesStore } from '../store/files.js'
 import { useSignStore } from '../store/sign.js'
@@ -206,31 +207,6 @@ type ValidationErrorResponse = {
 	}
 }
 
-function normalizeRouteRecord(value: unknown, source: 'params' | 'query'): Record<string, string> {
-	if (typeof value !== 'object' || value === null) {
-		return {}
-	}
-
-	const result: Record<string, string> = {}
-	const droppedKeys: string[] = []
-	for (const [key, entry] of Object.entries(value)) {
-		if (typeof entry === 'string') {
-			result[key] = entry
-		} else {
-			droppedKeys.push(key)
-		}
-	}
-
-	if (droppedKeys.length > 0) {
-		logger.warn('Validation route normalization dropped non-string entries', {
-			source,
-			droppedKeys,
-		})
-	}
-
-	return result
-}
-
 function toNumber(value: unknown): number | null {
 	return typeof value === 'number' && Number.isFinite(value) ? value : null
 }