feat: add vendor content pages management UI

- Add routes for vendor content pages list, create, and edit
- Create content-pages.html with tabs for Platform Defaults and My Pages
- Create content-page-edit.html for creating/editing pages
- Add JavaScript for both list and edit views
- Add "Content Pages" link to vendor sidebar under new "Shop" section
- Add show_in_legal field to vendor content pages API schemas
- Platform Defaults tab shows pages that can be overridden
- My Pages tab shows vendor's custom pages and overrides

Vendors can now:
- View platform default pages and override them with custom content
- Create entirely new custom pages for their shop
- Manage navigation placement (header, footer, legal)
- Publish/unpublish pages

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/api/v1/vendor/content_pages.py

@@ -48,6 +48,9 @@ class VendorContentPageCreate(BaseModel):
     is_published: bool = Field(default=False, description="Publish immediately")
     show_in_footer: bool = Field(default=True, description="Show in footer navigation")
     show_in_header: bool = Field(default=False, description="Show in header navigation")
+    show_in_legal: bool = Field(
+        default=False, description="Show in legal/bottom bar (next to copyright)"
+    )
     display_order: int = Field(default=0, description="Display order (lower = first)")
 
 
@@ -62,6 +65,7 @@ class VendorContentPageUpdate(BaseModel):
     is_published: bool | None = None
     show_in_footer: bool | None = None
     show_in_header: bool | None = None
+    show_in_legal: bool | None = None
     display_order: int | None = None
 
 
@@ -82,6 +86,7 @@ class ContentPageResponse(BaseModel):
     display_order: int
     show_in_footer: bool
     show_in_header: bool
+    show_in_legal: bool
     is_platform_default: bool
     is_vendor_override: bool
     created_at: str
@@ -188,6 +193,7 @@ def create_vendor_page(
         is_published=page_data.is_published,
         show_in_footer=page_data.show_in_footer,
         show_in_header=page_data.show_in_header,
+        show_in_legal=page_data.show_in_legal,
         display_order=page_data.display_order,
         created_by=current_user.id,
     )
@@ -224,6 +230,7 @@ def update_vendor_page(
         is_published=page_data.is_published,
         show_in_footer=page_data.show_in_footer,
         show_in_header=page_data.show_in_header,
+        show_in_legal=page_data.show_in_legal,
         display_order=page_data.display_order,
         updated_by=current_user.id,
     )