refactor: migrate vendor auth, profile, team, dashboard, settings to modules

Tenancy module (identity & organizational hierarchy):
- vendor_auth.py: login, logout, /me endpoints
- vendor_profile.py: vendor profile get/update
- vendor_team.py: team management, roles, permissions, invitations

Core module (foundational non-domain features):
- vendor_dashboard.py: dashboard statistics
- vendor_settings.py: localization, business info, letzshop settings

All routes auto-discovered via is_self_contained=True.
Deleted 5 legacy files from app/api/v1/vendor/.

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

app/api/v1/vendor/__init__.py

@@ -24,23 +24,18 @@ Self-contained modules (auto-discovered from app/modules/{module}/routes/api/ven
 - cms: Content pages management
 - customers: Customer management
 - payments: Payment configuration, Stripe connect, transactions
-- tenancy: Public vendor info lookup
+- tenancy: Vendor info, auth, profile, team management
 """
 
 from fastapi import APIRouter
 
 # Import all sub-routers (legacy routes that haven't been migrated to modules)
 from . import (
-    auth,
-    dashboard,
     email_settings,
     email_templates,
     media,
     messages,
     notifications,
-    profile,
-    settings,
-    team,
 )
 
 # Create vendor router
@@ -51,18 +46,14 @@ router = APIRouter()
 # ============================================================================
 # These routes return JSON and are mounted at /api/v1/vendor/*
 
-# Authentication (no prefix, specific routes like /auth/login)
-router.include_router(auth.router, tags=["vendor-auth"])
-
-# Vendor management (with prefixes: /dashboard/*, /profile/*, /settings/*)
-router.include_router(dashboard.router, tags=["vendor-dashboard"])
-router.include_router(profile.router, tags=["vendor-profile"])
-router.include_router(settings.router, tags=["vendor-settings"])
+# Email configuration
 router.include_router(email_templates.router, tags=["vendor-email-templates"])
 router.include_router(email_settings.router, tags=["vendor-email-settings"])
 
-# Business operations (with prefixes: /team/*)
-router.include_router(team.router, tags=["vendor-team"])
+# Services (with prefixes: /media/*, etc.)
+router.include_router(media.router, tags=["vendor-media"])
+router.include_router(notifications.router, tags=["vendor-notifications"])
+router.include_router(messages.router, tags=["vendor-messages"])
 
 # Services (with prefixes: /media/*, etc.)
 router.include_router(media.router, tags=["vendor-media"])