feat: persist System input policies through public consumers

crates/standalone/src/subjektiv/journal/tests.rs

@@ -212,6 +212,7 @@ fn message(id: &str, text: &str) -> session_store::LoggedHistoryEntry {
             content: vec![session_store::LoggedContentPart::Text { text: text.into() }],
         },
         metadata: session_store::LoggedSessionHistoryMetadata {
+            system_input: None,
             entry_id: session_store::LoggedSessionHistoryEntryId(id.into()),
             origin: session_store::LoggedSessionHistoryOrigin::LocalHumanInput,
             derivation: None,

crates/standalone/src/subjektiv_sessions.rs

@@ -1621,6 +1621,7 @@ allow = []
         let history = |id: &str, item: LoggedItem| LoggedHistoryEntry {
             item,
             metadata: LoggedSessionHistoryMetadata {
+                system_input: None,
                 entry_id: LoggedSessionHistoryEntryId(id.into()),
                 origin: LoggedSessionHistoryOrigin::BackendInstruction { operation_id: None },
                 derivation: None,