feat: add show_in_legal to admin content page editor

- Add "Show in Legal" checkbox to content page editor UI
- Update API schemas (ContentPageCreate, ContentPageUpdate, ContentPageResponse)
- Add show_in_legal parameter to service methods (create_page, update_page, etc.)
- Fix ContentPageNotFoundException to pass identifier correctly
- Fix UnauthorizedContentPageAccessException to use correct AuthorizationException API
- Add comprehensive unit tests for ContentPageService (35 tests)
- Add content page fixtures for testing
- Update CMS documentation with navigation categories diagram

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

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

app/api/v1/admin/content_pages.py

@@ -52,6 +52,9 @@ class ContentPageCreate(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)")
     vendor_id: int | None = Field(
         None, description="Vendor ID (None for platform default)"
@@ -70,6 +73,7 @@ class ContentPageUpdate(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
 
 
@@ -83,6 +87,7 @@ class ContentPageResponse(BaseModel):
     title: str
     content: str
     content_format: str
+    template: str | None = None
     meta_description: str | None
     meta_keywords: str | None
     is_published: bool
@@ -90,6 +95,7 @@ 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
@@ -146,6 +152,7 @@ def create_platform_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,
     )
@@ -209,6 +216,7 @@ def update_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,
     )