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

docs/architecture.md

@@ -3,16 +3,16 @@
 ## Monorepo Structure
 
 ```
-forte/
+lunarfront/
   packages/
-    shared/       @forte/shared — Zod schemas, types, business logic, utils
-    backend/      @forte/backend — Fastify API server
-    admin/        @forte/admin — Admin UI (React + Vite)
+    shared/       @lunarfront/shared — Zod schemas, types, business logic, utils
+    backend/      @lunarfront/backend — Fastify API server
+    admin/        @lunarfront/admin — Admin UI (React + Vite)
   planning/       Domain planning docs (01-26)
   docs/           Technical documentation
 ```
 
-Managed with Turborepo and Bun workspaces. `@forte/shared` is a dependency of both `backend` and `admin`.
+Managed with Turborepo and Bun workspaces. `@lunarfront/shared` is a dependency of both `backend` and `admin`.
 
 ## Backend