refactor: rename marketplace to storefront across the entire monorepo

Comprehensive rename of all marketplace references to storefront:
- API module: apps/api/src/modules/marketplace/ → storefront/
- Components: MarketplaceHeader → StorefrontHeader, MarketplaceShell →
  StorefrontShell, MarketplaceFooter → StorefrontFooter
- Types: marketplace-homepage.ts → storefront-homepage.ts
- Test files: employee-marketplace-* → employee-storefront-*
- All source code identifiers, imports, route paths, and strings
- Documentation (docs/), CI config (.gitlab-ci.yml), scripts
- Dashboard, admin, storefront workspace references
- Prisma field names preserved (isListedOnMarketplace, marketplaceRating,
  marketplaceFunnelEvent) as they map to database schema

Validation:
- API type-check: 0 errors
- Storefront type-check: 0 errors
- Dashboard type-check: 0 errors
- Full monorepo type-check: only pre-existing admin TS18046

docs/create-account-guide.md

@@ -15,7 +15,7 @@ Creating an account registers a new rental company on the platform. The flow has
 
 ## 1. Accessing the Sign-up Page
 
-### From the marketplace homepage (port 3000)
+### From the storefront homepage (port 3000)
 
 - Click **"Create Agency Space"** in the header navigation.
 - Click **"Get Started"** on any pricing plan card (`/pricing` page).
@@ -26,7 +26,7 @@ Both actions navigate to:
 http://localhost:3000/dashboard/sign-up
 ```
 
-The marketplace proxies this request to the dashboard app (port 3001), which renders the multi-step form.
+The storefront proxies this request to the dashboard app (port 3001), which renders the multi-step form.
 
 ### URL parameters (optional)
 
@@ -111,7 +111,7 @@ Select one of three plans:
 | Plan | Description |
 |---|---|
 | **STARTER** | Core fleet, offers, and bookings |
-| **GROWTH** | Featured marketplace placement and more room to scale |
+| **GROWTH** | Featured storefront placement and more room to scale |
 | **PRO** | Full white-label and premium controls |
 
 Additional options:
@@ -213,7 +213,7 @@ Navigate to `/sign-in` (redirects to `/dashboard/sign-in`). Enter the owner emai
 After first sign-in, the user is directed to the **onboarding** page (`/onboarding`) where they can:
 
 1. **Step 1 — Company profile**: Set display name, tagline, brand color, and public location.
-2. **Step 2 — Payments**: Configure AmanPay merchant ID / PayPal email and marketplace listing preference.
+2. **Step 2 — Payments**: Configure AmanPay merchant ID / PayPal email and storefront listing preference.
 3. **Step 3 — Completion**: Redirect to the dashboard home.
 
 ### Subscription
@@ -228,7 +228,7 @@ New accounts start on a **90-day free trial** with the selected plan. The subscr
 
 | File | Purpose |
 |---|---|
-| `apps/marketplace/src/app/renter/sign-up/page.tsx` | Marketplace redirect page to dashboard sign-up |
+| `apps/storefront/src/app/renter/sign-up/page.tsx` | Storefront redirect page to dashboard sign-up |
 | `apps/dashboard/src/app/sign-up/[[...sign-up]]/page.tsx` | Main multi-step sign-up form (4 steps, 937 lines) |
 | `apps/dashboard/src/components/ui/BilingualInput.tsx` | Bilingual (FR/AR) input component |
 | `apps/dashboard/src/components/layout/PublicShell.tsx` | Public layout wrapper for the sign-up page |
@@ -241,10 +241,10 @@ New accounts start on a **90-day free trial** with the selected plan. The subscr
 
 | File | Location |
 |---|---|
-| `apps/marketplace/src/components/MarketplaceHeader.tsx` | "Create Agency Space" button |
-| `apps/marketplace/src/components/WorkspaceTabs.tsx` | "Owner sign in" link |
-| `apps/marketplace/src/app/(public)/pricing/PricingClient.tsx` | "Get Started" pricing CTA |
-| `apps/marketplace/src/app/(public)/HomeContent.tsx` | Homepage CTA |
+| `apps/storefront/src/components/StorefrontHeader.tsx` | "Create Agency Space" button |
+| `apps/storefront/src/components/WorkspaceTabs.tsx` | "Owner sign in" link |
+| `apps/storefront/src/app/(public)/pricing/PricingClient.tsx` | "Get Started" pricing CTA |
+| `apps/storefront/src/app/(public)/HomeContent.tsx` | Homepage CTA |
 
 ### Backend