fix: remove trailing whitespace flagged by git diff --check

Author: lb1192176991-lab

backend/internal/core/test_publish_settings_test.go

@@ -63,7 +63,7 @@ func TestCheckForEnvCollision(t *testing.T) {
 func TestTestSettingsStore(t *testing.T) {
     store := newTestStore(t)
     defer store.Close()
-    
+
     enabled := true
     _, err := store.UpdateTestSettingsConfig(UpdateTestSettingsRequest{
         TestModeEnabled: &enabled,

frontend/public/publish-settings.html

@@ -109,11 +109,11 @@ <h2>➕ Add Entry</h2>
       <!-- Entries list -->
       <div class="card">
         <h2>📋 Current Entries <span style="font-size:0.85rem;color:#94a3b8;font-weight:400;">({{ entries.length }})</span></h2>
-        
+
         <div v-if="entries.length === 0" style="text-align:center;padding:2rem;color:#64748b;">
           No entries yet. Add your first integration key above.
         </div>
-        
+
         <table v-else>
           <thead>
             <tr><th>Key</th><th>Type</th><th>Name</th><th>Value</th><th>Status</th><th></th></tr>