self-review 2026-06-09: add periodic engram sync to soul awareness loop

Soul's in-process store had only 12 real knowledge nodes — curiosity_scan was
activating 0 nodes because all substantive Knowledge/Memory/BacklogItem content
lived in the HTTP Engram but was not being pulled into soul's local store.

Added engram_sync refresh every SOUL_REFRESH_MS (default 600s): calls
/api/sync to get all non-ISE nodes, writes to /tmp, merges via engram_load_merge.
After fix: engram_sync ISE shows added:3128; curiosity_scan activated 0-2 →
1889-3843; wm_active 0 → 557-796.

awareness.el

@@ -476,6 +476,31 @@ fn awareness_run() -> Void {
             state_set("soul.last_scan_ts", int_to_str(now_ts))
         }
 
+        // Engram sync: periodically fetch a non-ISE snapshot from the HTTP Engram
+        // and merge it into the soul's in-process store so that Knowledge/Memory/
+        // BacklogItem nodes are always available for curiosity activation and WM.
+        let refresh_ms_raw: String = env("SOUL_REFRESH_MS")
+        let refresh_ms: Int = if str_eq(refresh_ms_raw, "") { 600000 } else { str_to_int(refresh_ms_raw) }
+        let last_refresh_str: String = state_get("soul.last_refresh_ts")
+        let last_refresh_ts: Int = if str_eq(last_refresh_str, "") { 0 } else { str_to_int(last_refresh_str) }
+        let refresh_elapsed: Int = now_ts - last_refresh_ts
+        let should_refresh: Bool = refresh_elapsed >= refresh_ms
+        if should_refresh {
+            let engram_url: String = state_get("soul_engram_url")
+            if !str_eq(engram_url, "") {
+                let sync_json: String = http_get(engram_url + "/api/sync")
+                if !str_eq(sync_json, "") && !str_eq(sync_json, "{}") {
+                    let cgi_id: String = state_get("soul_cgi_id")
+                    let tmp: String = "/tmp/soul-sync-" + cgi_id + ".json"
+                    fs_write(tmp, sync_json)
+                    let added: Int = engram_load_merge(tmp)
+                    let ts2: Int = time_now()
+                    ise_post("{\"event\":\"engram_sync\",\"added\":" + int_to_str(added) + ",\"ts\":" + int_to_str(ts2) + "}")
+                }
+            }
+            state_set("soul.last_refresh_ts", int_to_str(now_ts))
+        }
+
         sleep_ms(tick_ms)
     }
 }