refactor: mark dead exports with TODO, deduplicate field sanitization, fix import placement

src/lib/foundation/errors.ts

@@ -49,6 +49,7 @@ export class RateLimitError extends DomainError {
 	}
 }
 
+// TODO: Check of dit weg kan — niet geïmporteerd in de codebase
 export class ConflictError extends DomainError {
 	constructor(message: string) {
 		super(message, 409);

src/lib/foundation/request-context.ts

@@ -30,6 +30,7 @@ export function runWithStore<T>(store: RequestStore, fn: () => T): T {
 	return als.run(store, fn);
 }
 
+// TODO: Check of dit weg kan — niet geïmporteerd in de codebase
 export function getRequestStore(): RequestStore | null {
 	return als.getStore() ?? null;
 }
@@ -38,6 +39,7 @@ export function getRequestId(): RequestId {
 	return als.getStore()?.requestId ?? generateRequestId();
 }
 
+// TODO: Check of dit weg kan — niet geïmporteerd in de codebase
 export function getClientIp(): IpAddress {
 	return als.getStore()?.ip ?? ("0.0.0.0" as IpAddress);
 }
@@ -47,6 +49,7 @@ export function setContextUserId(userId: UserId): void {
 	if (store) store.userId = userId;
 }
 
+// TODO: Check of dit weg kan — niet geïmporteerd in de codebase
 export function elapsed(): number {
 	const store = als.getStore();
 	return store ? Date.now() - store.startedAt : 0;

src/lib/foundation/security.ts

@@ -182,6 +182,15 @@ export function canonicalize(input: string): string {
 	return input.normalize("NFC").trim();
 }
 
+/** Normalize, trim and truncate a form field value to maxLen (default 255). */
+export function sanitizeField(
+	value: FormDataEntryValue | null,
+	maxLen = 255,
+): string {
+	const s = canonicalize(String(value ?? ""));
+	return s.slice(0, maxLen);
+}
+
 const INVALID_FILENAME_CHARS = /[<>:"/\\|?*]/;
 
 function removeControlChars(s: string): string {
@@ -193,6 +202,7 @@ function removeControlChars(s: string): string {
 	return result;
 }
 
+// TODO: Check of dit weg kan — niet geïmporteerd in de codebase
 export function sanitizeFilename(name: string): string {
 	return removeControlChars(
 		name
@@ -212,6 +222,7 @@ export function canonicalizeFormValue(
 	return maxLen ? s.slice(0, maxLen) : s;
 }
 
+// TODO: Check of dit weg kan — niet geïmporteerd in de codebase
 export function canonicalizeFormData(
 	formData: FormData,
 	fields: Record<string, number | undefined>,