fix: resolve settings page icon and 404 errors

- Change icon from 'envelope' to 'mail' (envelope not in icons.js)
- Add default query param to GET /admin/settings/{key} endpoint
- Return AdminSettingDefaultResponse instead of 404 when default provided
- Update loadShippingSettings() to use default param for carrier settings

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/api/v1/admin/settings.py

@@ -24,6 +24,7 @@ from app.services.admin_settings_service import admin_settings_service
 from models.database.user import User
 from models.schema.admin import (
     AdminSettingCreate,
+    AdminSettingDefaultResponse,
     AdminSettingListResponse,
     AdminSettingResponse,
     AdminSettingUpdate,
@@ -75,16 +76,24 @@ def get_setting_categories(
     }
 
 
-@router.get("/{key}", response_model=AdminSettingResponse)
+@router.get("/{key}", response_model=AdminSettingResponse | AdminSettingDefaultResponse)
 def get_setting(
     key: str,
+    default: str | None = Query(None, description="Default value if setting not found"),
     db: Session = Depends(get_db),
     current_admin: User = Depends(get_current_admin_api),
-):
-    """Get specific setting by key."""
+) -> AdminSettingResponse | AdminSettingDefaultResponse:
+    """Get specific setting by key.
+
+    If `default` is provided and the setting doesn't exist, returns a response
+    with the default value instead of 404.
+    """
     setting = admin_settings_service.get_setting_by_key(db, key)
 
     if not setting:
+        if default is not None:
+            # Return default value without creating the setting
+            return AdminSettingDefaultResponse(key=key, value=default, exists=False)
         raise ResourceNotFoundException(resource_type="Setting", identifier=key)
 
     return AdminSettingResponse.model_validate(setting)

app/templates/admin/settings.html

@@ -20,7 +20,7 @@
 {% call tabs_nav() %}
     {{ tab_button('display', 'Display', icon='view-grid') }}
     {{ tab_button('logging', 'Logging', icon='document-text') }}
-    {{ tab_button('email', 'Email', icon='envelope') }}
+    {{ tab_button('email', 'Email', icon='mail') }}
     {{ tab_button('shipping', 'Shipping', icon='truck') }}
     {{ tab_button('system', 'System', icon='cog') }}
     {{ tab_button('security', 'Security', icon='shield-check') }}

models/schema/admin.py

@@ -172,6 +172,14 @@ class AdminSettingResponse(BaseModel):
     model_config = {"from_attributes": True}
 
 
+class AdminSettingDefaultResponse(BaseModel):
+    """Response when returning a default value for non-existent setting."""
+
+    key: str
+    value: str
+    exists: bool = False
+
+
 class AdminSettingUpdate(BaseModel):
     """Update admin setting value."""
 

static/admin/js/settings.js

@@ -242,24 +242,24 @@ function adminSettings() {
 
         async loadShippingSettings() {
             try {
-                // Load each carrier setting
-                const carriers = ['greco', 'colissimo', 'xpresslogistics'];
+                // Load each carrier setting with defaults to avoid 404 errors
+                const carriers = [
+                    { name: 'greco', default: 'https://dispatchweb.fr/Tracky/Home/' },
+                    { name: 'colissimo', default: '' },
+                    { name: 'xpresslogistics', default: '' }
+                ];
                 for (const carrier of carriers) {
-                    try {
-                        const key = `carrier_${carrier}_label_url`;
-                        const data = await apiClient.get(`/admin/settings/${key}`);
-                        if (data && data.value) {
-                            this.shippingSettings[key] = data.value;
-                        }
-                    } catch (error) {
-                        // Setting doesn't exist yet, use default
-                        settingsLog.debug(`Setting carrier_${carrier}_label_url not found, using default`);
+                    const key = `carrier_${carrier.name}_label_url`;
+                    // Use default query param to avoid 404 for non-existent settings
+                    const data = await apiClient.get(`/admin/settings/${key}?default=${encodeURIComponent(carrier.default)}`);
+                    if (data && data.value !== undefined) {
+                        this.shippingSettings[key] = data.value;
                     }
                 }
                 settingsLog.info('Shipping settings loaded:', this.shippingSettings);
             } catch (error) {
                 settingsLog.error('Failed to load shipping settings:', error);
-                // Don't show error for missing settings, just use defaults
+                // On error, keep existing defaults
             }
         },