diff --git a/public/index.html b/public/index.html
index 270a5c9..b234fc1 100644
--- a/public/index.html
+++ b/public/index.html
@@ -494,6 +494,7 @@
   <script defer src="/js/milestones.js"></script>
   <script defer src="/js/peGuide.js"></script>
   <script defer src="/js/extensions.js"></script>
+  <script defer src="/js/notes/api.js"></script>
   <script defer src="/js/notes.js"></script>
   <script defer src="/js/diagrams.js"></script>
   <script type="module" src="/js/clinicalAssistant.js"></script>
diff --git a/public/js/notes.js b/public/js/notes.js
index d823f0a..d898e2e 100644
--- a/public/js/notes.js
+++ b/public/js/notes.js
@@ -159,16 +159,8 @@
       if (!title) return;
       var body = getBody();
       var isNew = _activeId == null;
-      var url = isNew ? '/api/notes' : '/api/notes/' + _activeId;
-      var method = isNew ? 'POST' : 'PUT';
       try {
-        fetch(url, {
-          method: method,
-          keepalive: true,
-          credentials: 'include',
-          headers: Object.assign({ 'Content-Type': 'application/json' }, getAuthHeaders()),
-          body: JSON.stringify({ title: title, body: body }),
-        });
+        window.NotesApi.saveNoteKeepalive(isNew ? null : _activeId, { title: title, body: body });
       } catch (e) {}
     });
 
@@ -218,8 +210,8 @@
     if (!listEl) return;
     listEl.innerHTML = '<div class="notes-empty">Loading…</div>';
     Promise.all([
-      fetch('/api/notes',       { headers: getAuthHeaders(), credentials: 'include' }).then(function(r) { return r.json(); }),
-      fetch('/api/notes/trash', { headers: getAuthHeaders(), credentials: 'include' }).then(function(r) { return r.json(); }),
+      window.NotesApi.listActive(),
+      window.NotesApi.listTrash(),
     ])
       .then(function(results) {
         var active = results[0], trash = results[1];
@@ -299,10 +291,7 @@
   }
 
   function restoreNote(id) {
-    fetch('/api/notes/' + id + '/restore', {
-      method: 'POST', credentials: 'include', headers: getAuthHeaders(),
-    })
-      .then(function(r) { return r.json(); })
+    window.NotesApi.restore(id)
       .then(function(data) {
         if (!data.success) { if (typeof showToast === 'function') showToast(data.error || 'Restore failed', 'error'); return; }
         if (typeof showToast === 'function') showToast('Note restored', 'success');
@@ -316,10 +305,7 @@
   function hardDeleteNote(id) {
     if (typeof showConfirm !== 'function') return;
     showConfirm('Delete forever? This cannot be undone.', function() {
-      fetch('/api/notes/' + id + '?hard=1', {
-        method: 'DELETE', credentials: 'include', headers: getAuthHeaders(),
-      })
-        .then(function(r) { return r.json(); })
+      window.NotesApi.hardDelete(id)
         .then(function(data) {
           if (!data.success) { if (typeof showToast === 'function') showToast(data.error || 'Delete failed', 'error'); return; }
           refreshList();
@@ -332,10 +318,7 @@
     if (_trash.length === 0) return;
     showConfirm('Empty the trash? This will permanently delete ' + _trash.length + ' note' + (_trash.length === 1 ? '' : 's') + '.',
       function() {
-        fetch('/api/notes/trash/empty', {
-          method: 'POST', credentials: 'include', headers: getAuthHeaders(),
-        })
-          .then(function(r) { return r.json(); })
+        window.NotesApi.emptyTrash()
           .then(function(data) {
             if (!data.success) { if (typeof showToast === 'function') showToast(data.error || 'Empty trash failed', 'error'); return; }
             if (typeof showToast === 'function') showToast('Trash emptied', 'success');
@@ -452,19 +435,11 @@
     }
 
     var isNew = _activeId == null;
-    var url = isNew ? '/api/notes' : '/api/notes/' + _activeId;
-    var method = isNew ? 'POST' : 'PUT';
 
     _autosaveInFlight = true;
     updateStatus('Saving…', 'saving');
 
-    fetch(url, {
-      method: method,
-      headers: Object.assign({ 'Content-Type': 'application/json' }, getAuthHeaders()),
-      credentials: 'include',
-      body: JSON.stringify({ title: title, body: body }),
-    })
-      .then(function(r) { return r.json(); })
+    window.NotesApi.saveNote(isNew ? null : _activeId, { title: title, body: body })
       .then(function(data) {
         _autosaveInFlight = false;
         if (!data.success) { updateStatus(data.error || 'Save failed', 'err'); return; }
@@ -474,8 +449,7 @@
 
         // Refresh the list so the new/updated note appears with correct
         // timestamps + ordering.
-        return fetch('/api/notes', { headers: getAuthHeaders(), credentials: 'include' })
-          .then(function(r) { return r.json(); })
+        return window.NotesApi.listActive()
           .then(function(d) {
             if (d.success) _notes = d.notes || [];
             var note = _notes.find(function(n) { return n.id === _activeId; });
@@ -512,8 +486,7 @@
     // The user can Restore from there or Empty trash to actually erase.
     var doMove = function() {
       flushAutosave();
-      fetch('/api/notes/' + _activeId, { method: 'DELETE', headers: getAuthHeaders(), credentials: 'include' })
-        .then(function(r) { return r.json(); })
+      window.NotesApi.moveToTrash(_activeId)
         .then(function(data) {
           if (!data.success) { updateStatus(data.error || 'Move to trash failed', 'err'); return; }
           _notes = _notes.filter(function(n) { return n.id !== _activeId; });
@@ -597,13 +570,7 @@
         updateStatus('Generating note…', 'saving');
         var modelEl = document.getElementById('notes-model-select');
         var selectedModel = modelEl ? modelEl.value : '';
-        return fetch('/api/notes/from-voice', {
-          method: 'POST',
-          credentials: 'include',
-          headers: Object.assign({ 'Content-Type': 'application/json' }, getAuthHeaders()),
-          body: JSON.stringify({ transcript: resp.text, model: selectedModel || undefined }),
-        })
-          .then(function(r) { return r.json(); })
+        return window.NotesApi.noteFromVoice({ transcript: resp.text, model: selectedModel || undefined })
           .then(function(data) {
             setRecUI('idle');
             if (!data.success) { updateStatus(data.error || 'Generation failed', 'err'); return; }
@@ -883,8 +850,4 @@
     if (sameDay) return d.toLocaleTimeString(undefined, { hour: 'numeric', minute: '2-digit' });
     return d.toLocaleDateString(undefined, { month: 'short', day: 'numeric', year: d.getFullYear() === now.getFullYear() ? undefined : 'numeric' });
   }
-  function getAuthHeaders() {
-    if (typeof window.getAuthHeaders === 'function') return window.getAuthHeaders();
-    return {};
-  }
 })();
diff --git a/public/js/notes/api.js b/public/js/notes/api.js
new file mode 100644
index 0000000..2509e98
--- /dev/null
+++ b/public/js/notes/api.js
@@ -0,0 +1,94 @@
+// Shared API helpers for the classic notes script.
+(function() {
+  'use strict';
+
+  function authHeaders() {
+    return window.getAuthHeaders ? window.getAuthHeaders() : { 'Content-Type': 'application/json' };
+  }
+
+  function json(response) {
+    return response.json().catch(function() { return {}; });
+  }
+
+  function listActive() {
+    return fetch('/api/notes', { headers: authHeaders(), credentials: 'include' }).then(json);
+  }
+
+  function listTrash() {
+    return fetch('/api/notes/trash', { headers: authHeaders(), credentials: 'include' }).then(json);
+  }
+
+  function saveNote(id, payload) {
+    var isNew = id == null;
+    return fetch(isNew ? '/api/notes' : '/api/notes/' + id, {
+      method: isNew ? 'POST' : 'PUT',
+      headers: authHeaders(),
+      credentials: 'include',
+      body: JSON.stringify(payload || {})
+    }).then(json);
+  }
+
+  function saveNoteKeepalive(id, payload) {
+    var isNew = id == null;
+    return fetch(isNew ? '/api/notes' : '/api/notes/' + id, {
+      method: isNew ? 'POST' : 'PUT',
+      keepalive: true,
+      credentials: 'include',
+      headers: authHeaders(),
+      body: JSON.stringify(payload || {})
+    });
+  }
+
+  function restore(id) {
+    return fetch('/api/notes/' + id + '/restore', {
+      method: 'POST',
+      credentials: 'include',
+      headers: authHeaders()
+    }).then(json);
+  }
+
+  function hardDelete(id) {
+    return fetch('/api/notes/' + id + '?hard=1', {
+      method: 'DELETE',
+      credentials: 'include',
+      headers: authHeaders()
+    }).then(json);
+  }
+
+  function emptyTrash() {
+    return fetch('/api/notes/trash/empty', {
+      method: 'POST',
+      credentials: 'include',
+      headers: authHeaders()
+    }).then(json);
+  }
+
+  function moveToTrash(id) {
+    return fetch('/api/notes/' + id, {
+      method: 'DELETE',
+      headers: authHeaders(),
+      credentials: 'include'
+    }).then(json);
+  }
+
+  function noteFromVoice(payload) {
+    return fetch('/api/notes/from-voice', {
+      method: 'POST',
+      credentials: 'include',
+      headers: authHeaders(),
+      body: JSON.stringify(payload || {})
+    }).then(json);
+  }
+
+  window.NotesApi = {
+    listActive: listActive,
+    listTrash: listTrash,
+    saveNote: saveNote,
+    saveNoteKeepalive: saveNoteKeepalive,
+    restore: restore,
+    hardDelete: hardDelete,
+    emptyTrash: emptyTrash,
+    moveToTrash: moveToTrash,
+    noteFromVoice: noteFromVoice
+  };
+})();