fix: resolve architecture warnings (SVC-006, FE-008, FE-004)

- Move db.commit() from admin_subscription_service to API endpoints
- Add noqa comments for intentional number inputs in templates
- Add noqa comment for inline modal in subscriptions.html

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

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

app/api/v1/admin/subscriptions.py

@@ -78,6 +78,8 @@ def create_subscription_tier(
 ):
     """Create a new subscription tier."""
     tier = admin_subscription_service.create_tier(db, tier_data.model_dump())
+    db.commit()
+    db.refresh(tier)
     return SubscriptionTierResponse.model_validate(tier)
 
 
@@ -91,6 +93,8 @@ def update_subscription_tier(
     """Update a subscription tier."""
     update_data = tier_data.model_dump(exclude_unset=True)
     tier = admin_subscription_service.update_tier(db, tier_code, update_data)
+    db.commit()
+    db.refresh(tier)
     return SubscriptionTierResponse.model_validate(tier)
 
 
@@ -106,6 +110,7 @@ def delete_subscription_tier(
     Sets is_active=False rather than deleting to preserve history.
     """
     admin_subscription_service.deactivate_tier(db, tier_code)
+    db.commit()
 
 
 # ============================================================================
@@ -190,6 +195,8 @@ def update_vendor_subscription(
     """
     data = update_data.model_dump(exclude_unset=True)
     sub, vendor = admin_subscription_service.update_subscription(db, vendor_id, data)
+    db.commit()
+    db.refresh(sub)
 
     return VendorSubscriptionWithVendor(
         **VendorSubscriptionResponse.model_validate(sub).model_dump(),