feat(memory): singleton ingestion + status RPC + UI pill (#1126)

src/core/event_bus/events.rs

@@ -72,6 +72,23 @@ pub enum DomainEvent {
     /// this variant is a hook for future ingestion subscribers to react to pull
     /// requests. See `src/openhuman/memory/ops.rs` for the RPC handlers.
     MemorySyncRequested { channel_id: Option<String> },
+    /// A memory ingestion job started running on the local extraction LLM.
+    /// Ingestion is singleton — this fires once, then a matching
+    /// [`Self::MemoryIngestionCompleted`] follows when the job finishes.
+    MemoryIngestionStarted {
+        document_id: String,
+        title: String,
+        namespace: String,
+        queue_depth: usize,
+    },
+    /// A memory ingestion job finished (successfully or with an error).
+    MemoryIngestionCompleted {
+        document_id: String,
+        namespace: String,
+        success: bool,
+        elapsed_ms: u64,
+        queue_depth: usize,
+    },
 
     // ── Channels ────────────────────────────────────────────────────────
     /// An inbound channel message from the transport layer, ready for processing.
@@ -366,7 +383,9 @@ impl DomainEvent {
 
             Self::MemoryStored { .. }
             | Self::MemoryRecalled { .. }
-            | Self::MemorySyncRequested { .. } => "memory",
+            | Self::MemorySyncRequested { .. }
+            | Self::MemoryIngestionStarted { .. }
+            | Self::MemoryIngestionCompleted { .. } => "memory",
 
             Self::ChannelInboundMessage { .. }
             | Self::ChannelMessageReceived { .. }