# Memory Layer (v0.3)

## Purpose

Scoped memory for Conversation + User per docs `02-system-architecture-prompt.md` §8.

## Current Scope

- Domain: `MemoryScope`, `MemoryInterface`
- Infrastructure: `WpMemoryStore` → `wp_teddy_memory`
- Application: `ChatMemoryComposer`, `RememberChatTurn`
- Wired into legacy `ChatService` and agent `SendChatMessage` (admin scope)

## Scopes

| Scope | Owner key | Usage |
|-------|-----------|--------|
| Conversation | `conversation_id` | Last topic per thread |
| User | `user_id` | Last topic across sessions |

## Settings

No separate flag — memory is active whenever chat runs and DB schema `1.3.0+` is installed.

## Verification

- `tests/Unit/ChatMemoryComposerTest.php`