read from target dir and look up metadata from csv

frontend/src/App.jsx

@@ -201,6 +201,7 @@ function buildCalendarScheduleData(currentScheduleData = {}, previousScheduleDat
 }
 
 const DEFAULT_SETTINGS = {
+  targetDir:         '',
   p2pCoeCsvPath:      '',
   p3pCsvPath:         '',
   refResultDir:       '',
@@ -394,11 +395,13 @@ export default function App() {
         .split(',').map(s => s.trim()).filter(Boolean)
       await api.saveHolidays(holidayDates)
 
-      if (sanitizedSettings.p2pCoeCsvPath?.trim()) {
-        await api.loadCsv(sanitizedSettings.p2pCoeCsvPath.trim())
-      }
-      if (sanitizedSettings.p3pCsvPath?.trim()) {
-        await api.loadCsv(sanitizedSettings.p3pCsvPath.trim())
+      const csvPaths = [
+        sanitizedSettings.p2pCoeCsvPath?.trim(),
+        sanitizedSettings.p3pCsvPath?.trim(),
+      ].filter(Boolean)
+
+      if (csvPaths.length > 0) {
+        await api.loadCsv(csvPaths, sanitizedSettings.targetDir?.trim() ?? '')
       }
 
       setSettings(sanitizedSettings)

frontend/src/api.js

@@ -27,7 +27,7 @@ export const api = {
   saveHolidays: (dates) => request('POST', '/holidays', { dates }),
 
   // Tests
-  loadCsv: (csv_path) => request('POST', '/tests/load', { csv_path }),
+  loadCsv: (csv_paths, target_dir) => request('POST', '/tests/load', { csv_paths, target_dir }),
 
   // Schedule
   compileSchedule: (opts) => request('POST', '/schedule/compile', opts),

frontend/src/components/SettingsModal.jsx

@@ -97,6 +97,15 @@ export default function SettingsModal({ isOpen, onClose, settings, onSave, onRes
               File Paths
             </p>
             <div className="flex flex-col gap-3">
+              <Field label="Target Directory" required>
+                <input
+                  type="text"
+                  className={INPUT_CLS}
+                  placeholder="/path/to/target/directory"
+                  value={form.targetDir ?? ''}
+                  onChange={(e) => set('targetDir', e.target.value)}
+                />
+              </Field>
               <Field label="P2P / COE CSV" required>
                 <input
                   type="text"