self-review 2026-06-05: wire wm_top into heartbeat ISE

Call engram_wm_top_json(5) in emit_heartbeat() and embed the result as
wm_top field in the heartbeat JSON payload. Each entry carries label,
node_type, tier, and wm_weight. This closes the WM composition blindspot:
previously the heartbeat showed wm_active=670 with no breakdown of what
was in working memory. With wm_top visible, ISE-dominated WM is immediately
detectable (all entries show node_type=InternalStateEvent), as was the case
on this session's first post-restart heartbeat before the runtime fix.

awareness.el

@@ -90,10 +90,17 @@ fn emit_heartbeat() -> Void {
     // Returns float bits; use float_to_str to embed in JSON. (2026-06-04)
     let wm_avg_bits: Float = engram_wm_avg_weight()
     let wm_avg_str: String = float_to_str(wm_avg_bits)
+    // wm_top: top-5 WM nodes by weight for ISE observability.
+    // After long uptime wm_promotion ISEs stop firing (all nodes in steady-state
+    // decay+re-promotion, so 0→>0.1 never triggers). This snapshot gives continuous
+    // visibility into WM composition: which types/tiers dominate, what labels are
+    // active. Critical for diagnosing "stuck in curiosity loop" vs. rich WM state.
+    // (2026-06-05 self-review)
+    let wm_top: String = engram_wm_top_json(5)
     let up_ms: Int = elapsed_ms()
     let up_human: String = elapsed_human()
     let emb_ok: Int = embed_ok()
-    let payload: String = "{\"event\":\"heartbeat\",\"pulse\":" + pulse + ",\"boot\":" + boot + ",\"idle\":" + idle + ",\"node_count\":" + int_to_str(nc) + ",\"edge_count\":" + int_to_str(ec) + ",\"wm_active\":" + int_to_str(wmc) + ",\"wm_avg_weight\":" + wm_avg_str + ",\"ts\":" + int_to_str(ts) + ",\"uptime_ms\":" + int_to_str(up_ms) + ",\"uptime\":\"" + up_human + "\",\"embed_ok\":" + int_to_str(emb_ok) + "}"
+    let payload: String = "{\"event\":\"heartbeat\",\"pulse\":" + pulse + ",\"boot\":" + boot + ",\"idle\":" + idle + ",\"node_count\":" + int_to_str(nc) + ",\"edge_count\":" + int_to_str(ec) + ",\"wm_active\":" + int_to_str(wmc) + ",\"wm_avg_weight\":" + wm_avg_str + ",\"wm_top\":" + wm_top + ",\"ts\":" + int_to_str(ts) + ",\"uptime_ms\":" + int_to_str(up_ms) + ",\"uptime\":\"" + up_human + "\",\"embed_ok\":" + int_to_str(emb_ok) + "}"
     ise_post(payload)
 }
 

dist/awareness.c

@@ -232,10 +232,11 @@ el_val_t emit_heartbeat(void) {
   el_val_t wmc = engram_wm_count();
   el_val_t wm_avg_bits = engram_wm_avg_weight();
   el_val_t wm_avg_str = float_to_str(wm_avg_bits);
+  el_val_t wm_top = engram_wm_top_json(5);
   el_val_t up_ms = elapsed_ms();
   el_val_t up_human = elapsed_human();
   el_val_t emb_ok = embed_ok();
-  el_val_t payload = el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(EL_STR("{\"event\":\"heartbeat\",\"pulse\":"), pulse), EL_STR(",\"boot\":")), boot), EL_STR(",\"idle\":")), idle), EL_STR(",\"node_count\":")), int_to_str(nc)), EL_STR(",\"edge_count\":")), int_to_str(ec)), EL_STR(",\"wm_active\":")), int_to_str(wmc)), EL_STR(",\"wm_avg_weight\":")), wm_avg_str), EL_STR(",\"ts\":")), int_to_str(ts)), EL_STR(",\"uptime_ms\":")), int_to_str(up_ms)), EL_STR(",\"uptime\":\"")), up_human), EL_STR("\",\"embed_ok\":")), int_to_str(emb_ok)), EL_STR("}"));
+  el_val_t payload = el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(EL_STR("{\"event\":\"heartbeat\",\"pulse\":"), pulse), EL_STR(",\"boot\":")), boot), EL_STR(",\"idle\":")), idle), EL_STR(",\"node_count\":")), int_to_str(nc)), EL_STR(",\"edge_count\":")), int_to_str(ec)), EL_STR(",\"wm_active\":")), int_to_str(wmc)), EL_STR(",\"wm_avg_weight\":")), wm_avg_str), EL_STR(",\"wm_top\":")), wm_top), EL_STR(",\"ts\":")), int_to_str(ts)), EL_STR(",\"uptime_ms\":")), int_to_str(up_ms)), EL_STR(",\"uptime\":\"")), up_human), EL_STR("\",\"embed_ok\":")), int_to_str(emb_ok)), EL_STR("}"));
   ise_post(payload);
   return 0;
 }

dist/neuron.c

@@ -25355,10 +25355,11 @@ el_val_t emit_heartbeat(void) {
   el_val_t wmc = engram_wm_count();
   el_val_t wm_avg_bits = engram_wm_avg_weight();
   el_val_t wm_avg_str = float_to_str(wm_avg_bits);
+  el_val_t wm_top = engram_wm_top_json(5);
   el_val_t up_ms = elapsed_ms();
   el_val_t up_human = elapsed_human();
   el_val_t emb_ok = embed_ok();
-  el_val_t payload = el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(EL_STR("{\"event\":\"heartbeat\",\"pulse\":"), pulse), EL_STR(",\"boot\":")), boot), EL_STR(",\"idle\":")), idle), EL_STR(",\"node_count\":")), int_to_str(nc)), EL_STR(",\"edge_count\":")), int_to_str(ec)), EL_STR(",\"wm_active\":")), int_to_str(wmc)), EL_STR(",\"wm_avg_weight\":")), wm_avg_str), EL_STR(",\"ts\":")), int_to_str(ts)), EL_STR(",\"uptime_ms\":")), int_to_str(up_ms)), EL_STR(",\"uptime\":\"")), up_human), EL_STR("\",\"embed_ok\":")), int_to_str(emb_ok)), EL_STR("}"));
+  el_val_t payload = el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(EL_STR("{\"event\":\"heartbeat\",\"pulse\":"), pulse), EL_STR(",\"boot\":")), boot), EL_STR(",\"idle\":")), idle), EL_STR(",\"node_count\":")), int_to_str(nc)), EL_STR(",\"edge_count\":")), int_to_str(ec)), EL_STR(",\"wm_active\":")), int_to_str(wmc)), EL_STR(",\"wm_avg_weight\":")), wm_avg_str), EL_STR(",\"wm_top\":")), wm_top), EL_STR(",\"ts\":")), int_to_str(ts)), EL_STR(",\"uptime_ms\":")), int_to_str(up_ms)), EL_STR(",\"uptime\":\"")), up_human), EL_STR("\",\"embed_ok\":")), int_to_str(emb_ok)), EL_STR("}"));
   ise_post(payload);
   return 0;
 }