fix: react-doctor modal/dialog/dropzone a11y — 18 files to role+tabIndex+onKeyDown or dialog

src/lib/column-detector.ts

@@ -176,9 +176,8 @@ export function detectColumnMappings(
   });
 
   // Collect sample values and handle disambiguation
-  for (const mapping of mappings) {
-    const colIdx = headers.indexOf(mapping.csvColumn);
-    if (colIdx === -1 || mapping.field === null) continue;
+  for (const [colIdx, mapping] of mappings.entries()) {
+    if (mapping.field === null) continue;
 
     const samples: string[] = [];
     for (const row of rows) {
@@ -223,9 +222,8 @@ export function mapRowToContactEntry(
   let normalizedEmail: string | null = null;
   let normalizedPhone: string | null = null;
 
-  for (const mapping of mappings) {
+  for (const [colIdx, mapping] of mappings.entries()) {
     if (mapping.field === null) continue;
-    const colIdx = mappings.indexOf(mapping);
     const raw = row[colIdx] ?? "";
 
     switch (mapping.field) {
@@ -252,7 +250,10 @@ export function mapRowToContactEntry(
         break;
       case "tags":
         entry.tags = raw
-          ? raw.split(/[;:,]/).map((t) => t.trim()).filter(Boolean)
+          ? raw.split(/[;:,]/).flatMap((t) => {
+              const trimmed = t.trim();
+              return trimmed ? [trimmed] : [];
+            })
           : undefined;
         break;
       case "email_opt_in":