Rename Forte to LunarFront, generalize for any small business

Rebrand from Forte (music-store-specific) to LunarFront (any small business):
- Package namespace @forte/* → @lunarfront/*
- Database forte/forte_test → lunarfront/lunarfront_test
- Docker containers, volumes, connection strings
- UI branding, localStorage keys, test emails
- All documentation and planning docs

Generalize music-specific terminology:
- instrumentDescription → itemDescription
- instrumentCount → itemCount
- instrumentType → itemCategory (on service templates)
- New migration 0027_generalize_terminology for column renames
- Seed data updated with generic examples
- RBAC descriptions updated

.env.example

@@ -1,9 +1,9 @@
-# Forte — Environment Variables
+# LunarFront — Environment Variables
 # Copy to .env and adjust values for your setup.
 # Docker Compose overrides host values (postgres, valkey) automatically.
 
 # Database (PostgreSQL 16)
-DATABASE_URL=postgresql://forte:forte@localhost:5432/forte
+DATABASE_URL=postgresql://lunarfront:lunarfront@localhost:5432/lunarfront
 
 # Valkey / Redis
 REDIS_URL=redis://localhost:6379
@@ -20,7 +20,7 @@ NODE_ENV=development
 
 # Logging (optional)
 # LOG_LEVEL=info
-# LOG_FILE=./logs/forte.log
+# LOG_FILE=./logs/lunarfront.log
 
 # File Storage (optional — defaults to local)
 # STORAGE_PROVIDER=local