fix: parse birthdate to supply day, month and year fields to satisfy Monica CRM validation

server.js

@@ -259,6 +259,40 @@ export async function monicaFetch(apiPath, options = {}) {
   return payload;
 }
 
+export function parseBirthdate(birthdateStr) {
+  if (!birthdateStr) {
+    return {
+      is_birthdate_known: false,
+      day: null,
+      month: null,
+      year: null
+    };
+  }
+
+  const parts = birthdateStr.split("-");
+  if (parts.length === 3) {
+    const yearVal = parseInt(parts[0], 10);
+    const monthVal = parseInt(parts[1], 10);
+    const dayVal = parseInt(parts[2], 10);
+
+    if (!isNaN(dayVal) && !isNaN(monthVal)) {
+      return {
+        is_birthdate_known: true,
+        day: dayVal,
+        month: monthVal,
+        year: (!isNaN(yearVal) && yearVal > 0) ? yearVal : null
+      };
+    }
+  }
+
+  return {
+    is_birthdate_known: false,
+    day: null,
+    month: null,
+    year: null
+  };
+}
+
 export async function writeToMonica(entry) {
   const results = [];
 
@@ -275,16 +309,25 @@ export async function writeToMonica(entry) {
   if (entry.contact?.is_new && entry.contact?.first_name) {
     try {
       console.log(`[CRM] Auto-creating new contact: "${entry.contact.first_name} ${entry.contact.last_name || ''}"`);
+      const bday = parseBirthdate(entry.contact.birthdate);
+      const postBody = {
+        first_name: entry.contact.first_name,
+        last_name: entry.contact.last_name || "",
+        description: "Automatisch angelegter Kontakt via Friends",
+        is_birthdate_known: bday.is_birthdate_known,
+        is_deceased: false,
+        is_deceased_date_known: false
+      };
+      if (bday.is_birthdate_known) {
+        postBody.day = bday.day;
+        postBody.month = bday.month;
+        if (bday.year !== null) {
+          postBody.year = bday.year;
+        }
+      }
       const newContactPayload = await monicaFetch("/api/contacts", {
         method: "POST",
-        body: JSON.stringify({
-          first_name: entry.contact.first_name,
-          last_name: entry.contact.last_name || "",
-          description: "Automatisch angelegter Kontakt via Friends",
-          is_birthdate_known: !!entry.contact.birthdate,
-          is_deceased: false,
-          is_deceased_date_known: false
-        }),
+        body: JSON.stringify(postBody),
       });
       const newContact = newContactPayload.data || {};
       contactId = Number(newContact.id);
@@ -312,16 +355,25 @@ export async function writeToMonica(entry) {
         const contactDetails = await monicaFetch(`/api/contacts/${contactId}`);
         const existingData = contactDetails.data || {};
         
+        const bday = parseBirthdate(entry.contact.birthdate);
+        const putBody = {
+          first_name: existingData.first_name || entry.contact.first_name || "Unbekannt",
+          last_name: existingData.last_name || entry.contact.last_name || "",
+          is_birthdate_known: bday.is_birthdate_known,
+          is_deceased: existingData.is_deceased ?? false,
+          is_deceased_date_known: existingData.is_deceased_date_known ?? false
+        };
+        if (bday.is_birthdate_known) {
+          putBody.day = bday.day;
+          putBody.month = bday.month;
+          if (bday.year !== null) {
+            putBody.year = bday.year;
+          }
+        }
+
         await monicaFetch(`/api/contacts/${contactId}`, {
           method: "PUT",
-          body: JSON.stringify({
-            first_name: existingData.first_name || entry.contact.first_name || "Unbekannt",
-            last_name: existingData.last_name || entry.contact.last_name || "",
-            birthdate: entry.contact.birthdate,
-            is_birthdate_known: !!entry.contact.birthdate,
-            is_deceased: existingData.is_deceased ?? false,
-            is_deceased_date_known: existingData.is_deceased_date_known ?? false
-          }),
+          body: JSON.stringify(putBody),
         });
         results.push({ type: "contact_birthdate", ok: true, id: contactId });
       } catch (error) {