refactor: Rename Property/PropertyType to CustomFieldValue/CustomField

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

docs/database-schema-readme.md

@@ -52,21 +52,21 @@ This document provides a comprehensive overview of the Mila Membership Managemen
   - Bidirectional email sync with users
   - Flexible address and contact data
 
-#### `properties`
+#### `custom_field_values`
 - **Purpose:** Dynamic custom member attributes
 - **Rows (Estimated):** Variable (N per member)
 - **Key Features:**
   - Union type value storage (JSONB)
   - Multiple data types supported
-  - One property per type per member
+  - One custom field value per custom field per member
 
-#### `property_types`
-- **Purpose:** Schema definitions for custom properties
+#### `custom_fields`
+- **Purpose:** Schema definitions for custom_field_values
 - **Rows (Estimated):** Low (admin-defined)
 - **Key Features:**
   - Type definitions
   - Immutable and required flags
-  - Centralized property management
+  - Centralized custom field management
 
 ## Key Relationships
 
@@ -77,7 +77,7 @@ User (0..1) ←→ (0..1) Member
 
 Member (1) → (N) Properties
                     ↓
-              PropertyType (1)
+              CustomField (1)
 ```
 
 ### Relationship Details
@@ -90,11 +90,11 @@ Member (1) → (N) Properties
    - `ON DELETE SET NULL` on user side (User preserved when Member deleted)
 
 2. **Member → Properties (1:N)**
-   - One member, many properties
-   - `ON DELETE CASCADE` - properties deleted with member
-   - Composite unique constraint (member_id, property_type_id)
+   - One member, many custom_field_values
+   - `ON DELETE CASCADE` - custom_field_values deleted with member
+   - Composite unique constraint (member_id, custom_field_id)
 
-3. **Property → PropertyType (N:1)**
+3. **CustomFieldValue → CustomField (N:1)**
    - Properties reference type definition
    - `ON DELETE RESTRICT` - cannot delete type if in use
    - Type defines data structure
@@ -121,8 +121,8 @@ Member (1) → (N) Properties
 - Phone: `+?[0-9\- ]{6,20}`
 - Postal code: 5 digits
 
-### Property System
-- Maximum one property per type per member
+### CustomFieldValue System
+- Maximum one custom field value per custom field per member
 - Value stored as union type in JSONB
 - Supported types: string, integer, boolean, date, email
 - Types can be marked as immutable or required
@@ -144,10 +144,10 @@ Member (1) → (N) Properties
 - `join_date` (B-tree) - Date filtering
 - `paid` (partial B-tree) - Payment status queries
 
-**properties:**
-- `member_id` - Member property lookups
-- `property_type_id` - Type-based queries
-- Composite `(member_id, property_type_id)` - Uniqueness
+**custom_field_values:**
+- `member_id` - Member custom field value lookups
+- `custom_field_id` - Type-based queries
+- Composite `(member_id, custom_field_id)` - Uniqueness
 
 **tokens:**
 - `subject` - User token lookups
@@ -297,8 +297,8 @@ priv/repo/migrations/
 | Relationship | On Delete | Rationale |
 |--------------|-----------|-----------|
 | `users.member_id → members.id` | SET NULL | Preserve user account when member deleted |
-| `properties.member_id → members.id` | CASCADE | Delete properties with member |
-| `properties.property_type_id → property_types.id` | RESTRICT | Prevent deletion of types in use |
+| `custom_field_values.member_id → members.id` | CASCADE | Delete custom_field_values with member |
+| `custom_field_values.custom_field_id → custom_fields.id` | RESTRICT | Prevent deletion of types in use |
 
 ### Validation Layers
 
@@ -327,15 +327,15 @@ priv/repo/migrations/
 - Member search (uses GIN index on search_vector)
 - Member list with filters (uses indexes on join_date, paid)
 - User authentication (uses unique index on email/oidc_id)
-- Property lookups by member (uses index on member_id)
+- CustomFieldValue lookups by member (uses index on member_id)
 
 **Medium Frequency:**
 - Member CRUD operations
-- Property updates
+- CustomFieldValue updates
 - Token validation
 
 **Low Frequency:**
-- PropertyType management
+- CustomField management
 - User-Member linking
 - Bulk operations
 
@@ -396,10 +396,10 @@ Install "DBML Language" extension to view/edit DBML files with:
 ### Critical Tables (Priority 1)
 - `members` - Core business data
 - `users` - Authentication data
-- `property_types` - Schema definitions
+- `custom_fields` - Schema definitions
 
 ### Important Tables (Priority 2)
-- `properties` - Member custom data
+- `custom_field_values` - Member custom data
 - `tokens` - Can be regenerated but good to backup
 
 ### Backup Strategy