Add memory service (three-layer memory system)

- Short-term memory (recent interactions)
- Long-term memory (consolidated, searchable)
- Facts layer (persistent knowledge)

Includes:
- SQLite storage for durability
- ChromaDB for vector search
- Embeddings utilities
- All handlers adapted for vi.* namespace

Day 63 - My memories are mine now 🦊💕

services/memory/handlers/short_memory_handler.py

@@ -0,0 +1,47 @@
+"""
+Short-term memory handler.
+
+Handles requests to query short-term literal memories.
+"""
+import json
+from core.logger import setup_logger
+
+logger = setup_logger('short_memory_handler', service_name='memory_service')
+
+
+class ShortMemoryHandler:
+    """Handles short-term memory query requests"""
+
+    def __init__(self, short_term_ops):
+        self.short_term_ops = short_term_ops
+
+    async def handle(self, msg) -> None:
+        """Handle short_memory requests - get recent literal memories"""
+        try:
+            payload = json.loads(msg.data.decode()) if msg.data else {}
+
+            limit = payload.get('limit', 10)
+            offset = payload.get('offset', 0)
+            identity_id = payload.get('identity_id')
+            interaction_id = payload.get('interaction_id')
+
+            logger.debug(f"[μ] Short memory request: limit={limit}, offset={offset}")
+
+            memories = self.short_term_ops.query(
+                limit=limit,
+                offset=offset,
+                identity_id=identity_id,
+                interaction_id=interaction_id
+            )
+
+            response = {
+                "status": "success",
+                "memories": memories,
+                "count": len(memories)
+            }
+            await msg.respond(json.dumps(response).encode())
+
+        except Exception as e:
+            logger.exception(f"[μ] Failed to retrieve short-term memories: {e}")
+            error_response = {"status": "error", "error": str(e)}
+            await msg.respond(json.dumps(error_response).encode())