fix(reliability): engram-connection

- entrypoint.sh: extend engram health-check timeout 30->60s; set
  EL_HTTP_TIMEOUT_MS=10000 and EL_HTTP_CONNECT_TIMEOUT_MS=3000 to bound
  awareness loop blocking window to 10s/call (down from 60s default)
- soul.el: 3-attempt retry loop for boot-time /api/nodes+/api/edges fetch;
  validate non-empty JSON array before loading to prevent silent zero-node
  identity graph from transient post-healthcheck network hiccup
- awareness.el: soft circuit-breaker in ise_post (opens after 3 failures,
  30s backoff, half-open probe); /api/sync refresh skips HTTP call when
  breaker is open; error-JSON detection on sync response

TODOs: full async dispatch, connection pooling (require EL futures/persistent curl)

soul.el

@@ -370,12 +370,29 @@ let snapshot_usable: Bool = local_node_count > 50
 
 if using_http_engram && !snapshot_usable {
     // First boot or empty/corrupt snapshot: seed from HTTP Engram.
+    // Retry up to 3 times (2s sleep between attempts) to guard against a
+    // transient network hiccup right after entrypoint.sh health check passes.
+    // An empty nodes response silently loads a zero-node graph; validate first.
+    // TODO(reliability): replace sleep_ms retry with non-blocking backoff.
     println("[soul] engram -> HTTP " + engram_url_raw + " (no local snapshot, first boot)")
-    let nodes_json: String = http_get(engram_url_raw + "/api/nodes?limit=10000")
-    let edges_json: String = http_get(engram_url_raw + "/api/edges")
-    let nodes_part: String = if str_eq(nodes_json, "") { "[]" } else { nodes_json }
-    let edges_part: String = if str_eq(edges_json, "") { "[]" } else { edges_json }
-    let snapshot_data: String = "{\"nodes\":" + nodes_part + ",\"edges\":" + edges_part + "}"
+    let fetch_attempt: Int = 0
+    while fetch_attempt < 3 {
+        let fetch_attempt = fetch_attempt + 1
+        let n: String = http_get(engram_url_raw + "/api/nodes?limit=10000")
+        let e: String = http_get(engram_url_raw + "/api/edges")
+        let nodes_ok: Bool = !str_eq(n, "") && str_starts_with(n, "[") && str_len(n) > 2
+        if nodes_ok {
+            state_set("_boot_nodes_json", n)
+            state_set("_boot_edges_json", e)
+            let fetch_attempt = 3
+        } else {
+            println("[soul] boot HTTP fetch attempt " + int_to_str(fetch_attempt) + " failed --- retrying in 2s")
+            sleep_ms(2000)
+        }
+    }
+    let nodes_json: String = state_get("_boot_nodes_json")
+    let edges_json: String = state_get("_boot_edges_json")
+        let snapshot_data: String = "{\"nodes\":" + nodes_part + ",\"edges\":" + edges_part + "}"
     let tmp_path: String = "/tmp/soul-engram-" + soul_cgi_id + ".json"
     fs_write(tmp_path, snapshot_data)
     engram_load(tmp_path)