fix(tenancy): fix team CRUD bugs + add member integration tests

Store team page:
- Fix undefined user_id (API returns `id`, JS used `user_id`)
- Fix wrong URL path in updateMember (remove redundant storeCode)
- Fix update_member_role route passing wrong kwarg (new_role_id → new_role_name)
- Add update_member() service method for role_id + is_active updates
- Add :selected binding for role pre-selection in edit modal

Merchant team page:
- Add missing db.commit() on invite, update, and remove endpoints
- Fix forward-reference string type annotation on MerchantTeamInvite
- Add :selected binding for role pre-selection in edit modal

Shared fixes:
- Replace removed subscription_service.check_team_limit with usage_service
- Replace removed subscription_service.get_current_tier in email service
- Fix email config bool settings crashing on .lower() (value_type=boolean)

Tests: 15 new integration tests for store team member API endpoints.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/modules/messaging/services/email_service.py

@@ -404,10 +404,10 @@ def get_platform_email_config(db: Session) -> dict:
     config["smtp_password"] = db_smtp_password if db_smtp_password else settings.smtp_password
 
     db_smtp_use_tls = get_db_setting("smtp_use_tls")
-    config["smtp_use_tls"] = db_smtp_use_tls.lower() in ("true", "1", "yes") if db_smtp_use_tls else settings.smtp_use_tls
+    config["smtp_use_tls"] = bool(db_smtp_use_tls) if db_smtp_use_tls is not None else settings.smtp_use_tls
 
     db_smtp_use_ssl = get_db_setting("smtp_use_ssl")
-    config["smtp_use_ssl"] = db_smtp_use_ssl.lower() in ("true", "1", "yes") if db_smtp_use_ssl else settings.smtp_use_ssl
+    config["smtp_use_ssl"] = bool(db_smtp_use_ssl) if db_smtp_use_ssl is not None else settings.smtp_use_ssl
 
     # SendGrid
     db_sendgrid_key = get_db_setting("sendgrid_api_key")
@@ -432,10 +432,10 @@ def get_platform_email_config(db: Session) -> dict:
 
     # Behavior
     db_enabled = get_db_setting("email_enabled")
-    config["enabled"] = db_enabled.lower() in ("true", "1", "yes") if db_enabled else settings.email_enabled
+    config["enabled"] = bool(db_enabled) if db_enabled is not None else settings.email_enabled
 
     db_debug = get_db_setting("email_debug")
-    config["debug"] = db_debug.lower() in ("true", "1", "yes") if db_debug else settings.email_debug
+    config["debug"] = bool(db_debug) if db_debug is not None else settings.email_debug
 
     return config
 
@@ -1038,8 +1038,8 @@ class EmailService:
                 subscription_service,
             )
 
-            tier = subscription_service.get_current_tier(self.db, store_id)
-            self._store_tier_cache[store_id] = tier.value if tier else None
+            sub = subscription_service.get_subscription_for_store(self.db, store_id)
+            self._store_tier_cache[store_id] = sub.tier.code if sub and sub.tier else None
         return self._store_tier_cache[store_id]
 
     def _should_add_powered_by_footer(self, store_id: int | None) -> bool: