refactor: Rename Property/PropertyType to CustomFieldValue/CustomField

Complete refactoring of resources, database tables, code references, tests, and documentation for improved naming consistency.

CODE_GUIDELINES.md

@@ -81,8 +81,8 @@ lib/
 ├── membership/            # Membership domain
 │   ├── membership.ex      # Domain definition
 │   ├── member.ex          # Member resource
-│   ├── property.ex        # Custom property resource
-│   ├── property_type.ex   # Property type resource
+│   ├── custom_field_value.ex        # Custom field value resource
+│   ├── custom_field.ex   # CustomFieldValue type resource
 │   └── email.ex           # Email custom type
 ├── mv/                    # Core application modules
 │   ├── accounts/          # Domain-specific logic
@@ -121,8 +121,8 @@ lib/
 │   │   │   ├── search_bar_component.ex
 │   │   │   └── sort_header_component.ex
 │   │   ├── member_live/   # Member CRUD LiveViews
-│   │   ├── property_live/ # Property CRUD LiveViews
-│   │   ├── property_type_live/
+│   │   ├── custom_field_value_live/ # CustomFieldValue CRUD LiveViews
+│   │   ├── custom_field_live/
 │   │   └── user_live/     # User management LiveViews
 │   ├── auth_overrides.ex  # AshAuthentication overrides
 │   ├── endpoint.ex        # Phoenix endpoint
@@ -740,14 +740,14 @@ end
 # Good - preload relationships
 members = 
   Member
-  |> Ash.Query.load(:properties)
+  |> Ash.Query.load(:custom_field_values)
   |> Mv.Membership.list_members!()
 
 # Avoid - causes N+1 queries
 members = Mv.Membership.list_members!()
 Enum.map(members, fn member ->
   # This triggers a query for each member
-  Ash.load!(member, :properties)
+  Ash.load!(member, :custom_field_values)
 end)
 ```
 
@@ -1723,13 +1723,13 @@ end
 # Good - preload relationships
 members = 
   Member
-  |> Ash.Query.load([:properties, :user])
+  |> Ash.Query.load([:custom_field_values, :user])
   |> Mv.Membership.list_members!()
 
 # Avoid - causes N+1
 members = Mv.Membership.list_members!()
 Enum.map(members, fn member ->
-  properties = Ash.load!(member, :properties)  # N queries!
+  custom_field_values = Ash.load!(member, :custom_field_values)  # N queries!
 end)
 ```
 
@@ -1904,7 +1904,7 @@ defmodule Mv.Membership.Member do
   @moduledoc """
   Represents a club member with their personal information and membership status.
 
-  Members can have custom properties defined by the club administrators.
+  Members can have custom_field_values defined by the club administrators.
   Each member is optionally linked to a user account for self-service access.
 
   ## Examples
@@ -2050,7 +2050,7 @@ open doc/index.html
 ## [Unreleased]
 
 ### Added
-- Member custom properties feature
+- Member custom_field_values feature
 - Email synchronization between user and member
 
 ### Changed
@@ -2081,14 +2081,14 @@ open doc/index.html
 
 ```bash
 # Create feature branch
-git checkout -b feature/member-custom-properties
+git checkout -b feature/member-custom-custom_field_values
 
 # Work on feature
 git add .
-git commit -m "Add custom properties to members"
+git commit -m "Add custom_field_values to members"
 
 # Push to remote
-git push origin feature/member-custom-properties
+git push origin feature/member-custom-custom_field_values
 ```
 
 ### 8.2 Commit Messages
@@ -2127,7 +2127,7 @@ Closes #123
 ```
 fix: resolve N+1 query in member list
 
-Preload properties relationship when loading members to avoid N+1 queries.
+Preload custom_field_values relationship when loading members to avoid N+1 queries.
 
 Performance improvement: reduced query count from 100+ to 2.
 ```