Merge pull request 'promote stage -> main: reconciled el runtime (engram search + natives + durable truncation fix + Windows port)' (#82) from stage into main

Land el cluster (#66 + #79 + release-runtime Windows-port reconciliation) into dev

.gitea/workflows/ci-dev.yaml

@@ -214,9 +214,18 @@ jobs:
         env:
           GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}
         run: |
+          # Fail loudly: previously this step had no `set -e`, so an auth or
+          # upload failure was swallowed (step exited 0 on the trailing echo)
+          # and the SDK silently never published. Surface failures now.
+          set -euo pipefail
+          if [ -z "${GCP_SA_KEY:-}" ]; then
+            echo "FATAL: GCP_SA_KEY secret is empty — cannot authenticate to publish" >&2
+            exit 1
+          fi
           echo "${GCP_SA_KEY}" > /tmp/gcp-key.json
           gcloud auth activate-service-account --key-file=/tmp/gcp-key.json
           gcloud config set project neuron-785695
+          echo "Publishing as active account: $(gcloud config get-value account 2>/dev/null)"
 
           VERSION="${GITHUB_SHA:0:8}"
 
@@ -268,6 +277,12 @@ jobs:
         # Patches ci-base:dev in-place: pulls the existing image (which has all
         # system deps — Node, Go, gcloud, Docker CLI, etc.) and overlays the freshly
         # built El SDK on top. Keeps the full ci-base rebuild fast and incremental.
+        #
+        # continue-on-error: this is a CI-cache optimization, NOT the release
+        # artifact. It runs Docker (pull/build/push ~600MB) on the host-mode GCE
+        # runner where DinD/Docker availability is fragile. A failure here must
+        # never block or redden the job — the SDK publish above is the deliverable.
+        continue-on-error: true
         if: github.event_name == 'push'
         env:
           GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}

.gitea/workflows/ci-stage.yaml

@@ -212,12 +212,21 @@ jobs:
         env:
           GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}
         run: |
+          # Fail loudly: previously this step had no `set -e`, so an auth or
+          # upload failure was swallowed (step exited 0 on the trailing echo)
+          # and the SDK silently never published. Surface failures now.
+          set -euo pipefail
+          if [ -z "${GCP_SA_KEY:-}" ]; then
+            echo "FATAL: GCP_SA_KEY secret is empty — cannot authenticate to publish" >&2
+            exit 1
+          fi
           echo "${GCP_SA_KEY}" > /tmp/gcp-key.json
           apt-get install -y -qq apt-transport-https ca-certificates curl
           echo "deb [trusted=yes] https://packages.cloud.google.com/apt cloud-sdk main" > /etc/apt/sources.list.d/google-cloud-sdk.list
           apt-get update -qq && apt-get install -y google-cloud-cli
           gcloud auth activate-service-account --key-file=/tmp/gcp-key.json
           gcloud config set project neuron-785695
+          echo "Publishing as active account: $(gcloud config get-value account 2>/dev/null)"
 
           VERSION="${GITHUB_SHA:0:8}"
 
@@ -253,6 +262,12 @@ jobs:
         # Patches ci-base:stage in-place: pulls the existing image (which has all
         # system deps — Node, Go, gcloud, Docker CLI, etc.) and overlays the freshly
         # built El SDK on top. Keeps the full ci-base rebuild fast and incremental.
+        #
+        # continue-on-error: this is a CI-cache optimization, NOT the release
+        # artifact. It runs Docker (pull/build/push ~600MB) on the host-mode GCE
+        # runner where DinD/Docker availability is fragile. A failure here must
+        # never block or redden the job — the SDK publish above is the deliverable.
+        continue-on-error: true
         if: github.event_name == 'push'
         env:
           GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}

.gitea/workflows/sdk-release.yaml

@@ -288,12 +288,21 @@ jobs:
         env:
           GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}
         run: |
+          # Fail loudly: previously this step had no `set -e`, so an auth or
+          # upload failure was swallowed (step exited 0 on the trailing echo)
+          # and the SDK silently never published. Surface failures now.
+          set -euo pipefail
+          if [ -z "${GCP_SA_KEY:-}" ]; then
+            echo "FATAL: GCP_SA_KEY secret is empty — cannot authenticate to publish" >&2
+            exit 1
+          fi
           echo "${GCP_SA_KEY}" > /tmp/gcp-key.json
           apt-get install -y -qq apt-transport-https ca-certificates curl
           echo "deb [trusted=yes] https://packages.cloud.google.com/apt cloud-sdk main" > /etc/apt/sources.list.d/google-cloud-sdk.list
           apt-get update -qq && apt-get install -y google-cloud-cli
           gcloud auth activate-service-account --key-file=/tmp/gcp-key.json
           gcloud config set project neuron-785695
+          echo "Publishing as active account: $(gcloud config get-value account 2>/dev/null)"
 
           VERSION="${GITHUB_SHA:0:8}"
 
@@ -345,6 +354,12 @@ jobs:
         # Patches ci-base:latest in-place: pulls the existing image (which has all
         # system deps — Node, Go, gcloud, Docker CLI, etc.) and overlays the freshly
         # built El SDK on top. Keeps the full ci-base rebuild fast and incremental.
+        #
+        # continue-on-error: this is a CI-cache optimization, NOT the release
+        # artifact. It runs Docker (pull/build/push ~600MB) on the host-mode GCE
+        # runner where DinD/Docker availability is fragile. A failure here must
+        # never block or redden the job — the SDK publish above is the deliverable.
+        continue-on-error: true
         if: github.event_name == 'push'
         env:
           GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}

engram/.gitea/workflows/ci-dev.yaml

@@ -81,7 +81,7 @@ jobs:
       # Link to produce the engram binary
       - name: Link engram binary
         run: |
-          cc -std=c11 -O2 \
+          cc -std=c11 -O2 -DHAVE_CURL \
             -I /usr/local/lib/el \
             -o dist/engram \
             dist/engram.c \

engram/.gitea/workflows/ci-stage.yaml

@@ -88,7 +88,7 @@ jobs:
       # Link to produce the engram binary
       - name: Link engram binary
         run: |
-          cc -std=c11 -O2 \
+          cc -std=c11 -O2 -DHAVE_CURL \
             -I /usr/local/lib/el \
             -o dist/engram \
             dist/engram.c \

engram/.gitea/workflows/engram-release.yaml

@@ -62,7 +62,7 @@ jobs:
       # Link to produce the engram binary
       - name: Link engram binary
         run: |
-          cc -std=c11 -O2 \
+          cc -std=c11 -O2 -DHAVE_CURL \
             -I /usr/local/lib/el \
             -o dist/engram \
             dist/engram.c \

engram/dist/engram.c

@@ -10,6 +10,7 @@ el_val_t query_param(el_val_t path, el_val_t key);
 el_val_t query_int(el_val_t path, el_val_t key, el_val_t default_val);
 el_val_t extract_id(el_val_t path, el_val_t prefix);
 el_val_t route_stats(el_val_t method, el_val_t path, el_val_t body);
+el_val_t persist_canonical(void);
 el_val_t route_create_node(el_val_t method, el_val_t path, el_val_t body);
 el_val_t route_get_node(el_val_t method, el_val_t path, el_val_t body);
 el_val_t route_scan_nodes(el_val_t method, el_val_t path, el_val_t body);
@@ -20,18 +21,23 @@ el_val_t route_create_edge(el_val_t method, el_val_t path, el_val_t body);
 el_val_t route_neighbors(el_val_t method, el_val_t path, el_val_t body);
 el_val_t route_strengthen(el_val_t method, el_val_t path, el_val_t body);
 el_val_t route_forget(el_val_t method, el_val_t path, el_val_t body);
-el_val_t route_create_ise(el_val_t method, el_val_t path, el_val_t body);
-el_val_t route_sync(el_val_t method, el_val_t path, el_val_t body);
 el_val_t route_save(el_val_t method, el_val_t path, el_val_t body);
 el_val_t route_load(el_val_t method, el_val_t path, el_val_t body);
 el_val_t route_health(el_val_t method, el_val_t path, el_val_t body);
+el_val_t route_sync(el_val_t method, el_val_t path, el_val_t body);
+el_val_t route_load_merge(el_val_t method, el_val_t path, el_val_t body);
+el_val_t route_emit_ise(el_val_t method, el_val_t path, el_val_t body);
+el_val_t route_capture_knowledge(el_val_t method, el_val_t path, el_val_t body);
 el_val_t check_auth_ok(el_val_t method, el_val_t body);
 el_val_t handle_request(el_val_t method, el_val_t path, el_val_t body);
 
+el_val_t bind_raw;
 el_val_t bind_str;
 el_val_t port;
+el_val_t data_dir_raw;
 el_val_t data_dir;
 el_val_t snapshot_path;
+el_val_t boot_snap;
 
 el_val_t parse_port(el_val_t bind) {
   el_val_t colon = str_index_of(bind, EL_STR(":"));
@@ -110,17 +116,22 @@ el_val_t route_stats(el_val_t method, el_val_t path, el_val_t body) {
   return 0;
 }
 
+el_val_t persist_canonical(void) {
+  el_val_t dir_raw = env(EL_STR("ENGRAM_DATA_DIR"));
+  el_val_t dir = ({ el_val_t _if_result_1 = 0; if (str_eq(dir_raw, EL_STR(""))) { _if_result_1 = (EL_STR("/tmp/engram")); } else { _if_result_1 = (dir_raw); } _if_result_1; });
+  engram_save(el_str_concat(dir, EL_STR("/snapshot.json")));
+  return 1;
+  return 0;
+}
+
 el_val_t route_create_node(el_val_t method, el_val_t path, el_val_t body) {
   el_val_t content = json_get_string(body, EL_STR("content"));
-  el_val_t node_type = json_get_string(body, EL_STR("node_type"));
+  el_val_t nt_raw = json_get_string(body, EL_STR("node_type"));
-  if (str_eq(node_type, EL_STR(""))) {
+  el_val_t node_type = ({ el_val_t _if_result_2 = 0; if (str_eq(nt_raw, EL_STR(""))) { _if_result_2 = (EL_STR("Memory")); } else { _if_result_2 = (nt_raw); } _if_result_2; });
-    node_type = EL_STR("Memory");
+  el_val_t sal_raw = json_get_float(body, EL_STR("salience"));
-  }
+  el_val_t salience = ({ el_val_t _if_result_3 = 0; if ((sal_raw == el_from_float(0.0))) { _if_result_3 = (el_from_float(0.5)); } else { _if_result_3 = (sal_raw); } _if_result_3; });
-  el_val_t salience = json_get_float(body, EL_STR("salience"));
-  if (salience == el_from_float(0.0)) {
-    salience = el_from_float(0.5);
-  }
   el_val_t id = engram_node(content, node_type, salience);
+  el_val_t saved = persist_canonical();
   return el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(EL_STR("{\"id\":\""), id), EL_STR("\",\"content\":\"")), content), EL_STR("\",\"node_type\":\"")), node_type), EL_STR("\"}"));
   return 0;
 }
@@ -146,11 +157,9 @@ el_val_t route_scan_nodes(el_val_t method, el_val_t path, el_val_t body) {
 }
 
 el_val_t route_scan_edges(el_val_t method, el_val_t path, el_val_t body) {
-  el_val_t dir = env(EL_STR("ENGRAM_DATA_DIR"));
+  el_val_t dir_raw = env(EL_STR("ENGRAM_DATA_DIR"));
-  if (str_eq(dir, EL_STR(""))) {
+  el_val_t dir = ({ el_val_t _if_result_4 = 0; if (str_eq(dir_raw, EL_STR(""))) { _if_result_4 = (EL_STR("/tmp/engram")); } else { _if_result_4 = (dir_raw); } _if_result_4; });
-    dir = EL_STR("/tmp/engram");
+  el_val_t snap_path = el_str_concat(dir, EL_STR("/.scan-export.json"));
-  }
-  el_val_t snap_path = el_str_concat(dir, EL_STR("/snapshot.json"));
   engram_save(snap_path);
   el_val_t snap = fs_read(snap_path);
   if (str_eq(snap, EL_STR(""))) {
@@ -165,36 +174,22 @@ el_val_t route_scan_edges(el_val_t method, el_val_t path, el_val_t body) {
 }
 
 el_val_t route_search(el_val_t method, el_val_t path, el_val_t body) {
-  el_val_t q = EL_STR("");
+  el_val_t q = ({ el_val_t _if_result_5 = 0; if (str_eq(method, EL_STR("GET"))) { _if_result_5 = (query_param(path, EL_STR("q"))); } else { _if_result_5 = (json_get_string(body, EL_STR("query"))); } _if_result_5; });
-  if (str_eq(method, EL_STR("GET"))) {
+  el_val_t lim_url = query_int(path, EL_STR("limit"), 0);
-    q = query_param(path, EL_STR("q"));
+  el_val_t lim_body = json_get_int(body, EL_STR("limit"));
-  } else {
+  el_val_t lim_either = ({ el_val_t _if_result_6 = 0; if ((lim_url > 0)) { _if_result_6 = (lim_url); } else { _if_result_6 = (lim_body); } _if_result_6; });
-    q = json_get_string(body, EL_STR("query"));
+  el_val_t limit = ({ el_val_t _if_result_7 = 0; if ((lim_either > 0)) { _if_result_7 = (lim_either); } else { _if_result_7 = (20); } _if_result_7; });
-  }
-  el_val_t limit = query_int(path, EL_STR("limit"), 20);
-  if (limit == 0) {
-    limit = json_get_int(body, EL_STR("limit"));
-  }
-  if (limit == 0) {
-    limit = 20;
-  }
   return engram_search_json(q, limit);
   return 0;
 }
 
 el_val_t route_activate(el_val_t method, el_val_t path, el_val_t body) {
-  el_val_t q = EL_STR("");
+  el_val_t q = ({ el_val_t _if_result_8 = 0; if (str_eq(method, EL_STR("GET"))) { _if_result_8 = (query_param(path, EL_STR("q"))); } else { _if_result_8 = (json_get_string(body, EL_STR("query"))); } _if_result_8; });
-  el_val_t depth = 3;
+  if (str_eq(q, EL_STR(""))) {
-  if (str_eq(method, EL_STR("GET"))) {
+    return err_json(EL_STR("missing query"));
-    q = query_param(path, EL_STR("q"));
-    depth = query_int(path, EL_STR("depth"), 3);
-  } else {
-    q = json_get_string(body, EL_STR("query"));
-    el_val_t bd = json_get_int(body, EL_STR("depth"));
-    if (bd > 0) {
-      depth = bd;
-    }
   }
+  el_val_t d_raw = ({ el_val_t _if_result_9 = 0; if (str_eq(method, EL_STR("GET"))) { _if_result_9 = (query_int(path, EL_STR("depth"), 3)); } else { _if_result_9 = (json_get_int(body, EL_STR("depth"))); } _if_result_9; });
+  el_val_t depth = ({ el_val_t _if_result_10 = 0; if ((d_raw > 0)) { _if_result_10 = (d_raw); } else { _if_result_10 = (3); } _if_result_10; });
   return el_str_concat(el_str_concat(EL_STR("{\"results\":"), engram_activate_json(q, depth)), EL_STR("}"));
   return 0;
 }
@@ -202,15 +197,12 @@ el_val_t route_activate(el_val_t method, el_val_t path, el_val_t body) {
 el_val_t route_create_edge(el_val_t method, el_val_t path, el_val_t body) {
   el_val_t from_id = json_get_string(body, EL_STR("from_id"));
   el_val_t to_id = json_get_string(body, EL_STR("to_id"));
-  el_val_t relation = json_get_string(body, EL_STR("relation"));
+  el_val_t rel_raw = json_get_string(body, EL_STR("relation"));
-  if (str_eq(relation, EL_STR(""))) {
+  el_val_t relation = ({ el_val_t _if_result_11 = 0; if (str_eq(rel_raw, EL_STR(""))) { _if_result_11 = (EL_STR("associates")); } else { _if_result_11 = (rel_raw); } _if_result_11; });
-    relation = EL_STR("associates");
+  el_val_t w_raw = json_get_float(body, EL_STR("weight"));
-  }
+  el_val_t weight = ({ el_val_t _if_result_12 = 0; if ((w_raw == el_from_float(0.0))) { _if_result_12 = (el_from_float(0.5)); } else { _if_result_12 = (w_raw); } _if_result_12; });
-  el_val_t weight = json_get_float(body, EL_STR("weight"));
-  if (weight == el_from_float(0.0)) {
-    weight = el_from_float(0.5);
-  }
   engram_connect(from_id, to_id, weight, relation);
+  el_val_t saved = persist_canonical();
   return el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(EL_STR("{\"ok\":true,\"from_id\":\""), from_id), EL_STR("\",\"to_id\":\"")), to_id), EL_STR("\",\"relation\":\"")), relation), EL_STR("\"}"));
   return 0;
 }
@@ -231,6 +223,7 @@ el_val_t route_strengthen(el_val_t method, el_val_t path, el_val_t body) {
     return err_json(EL_STR("missing node_id"));
   }
   engram_strengthen(id);
+  el_val_t saved = persist_canonical();
   return ok_json();
   return 0;
 }
@@ -241,29 +234,40 @@ el_val_t route_forget(el_val_t method, el_val_t path, el_val_t body) {
     return err_json(EL_STR("missing id"));
   }
   engram_forget(id);
+  el_val_t saved = persist_canonical();
   return ok_json();
   return 0;
 }
 
-el_val_t route_create_ise(el_val_t method, el_val_t path, el_val_t body) {
+el_val_t route_save(el_val_t method, el_val_t path, el_val_t body) {
-  el_val_t content = json_get_string(body, EL_STR("content"));
+  el_val_t p_raw = json_get_string(body, EL_STR("path"));
-  if (str_eq(content, EL_STR(""))) {
+  el_val_t dir_raw = env(EL_STR("ENGRAM_DATA_DIR"));
-    return err_json(EL_STR("missing content"));
+  el_val_t dir = ({ el_val_t _if_result_13 = 0; if (str_eq(dir_raw, EL_STR(""))) { _if_result_13 = (EL_STR("/tmp/engram")); } else { _if_result_13 = (dir_raw); } _if_result_13; });
-  }
+  el_val_t p = ({ el_val_t _if_result_14 = 0; if (str_eq(p_raw, EL_STR(""))) { _if_result_14 = (el_str_concat(dir, EL_STR("/snapshot.json"))); } else { _if_result_14 = (p_raw); } _if_result_14; });
-  el_val_t sal = el_from_float(0.3);
+  engram_save(p);
-  el_val_t imp = el_from_float(0.3);
+  return el_str_concat(el_str_concat(EL_STR("{\"ok\":true,\"path\":\""), p), EL_STR("\"}"));
-  el_val_t conf = el_from_float(0.8);
+  return 0;
-  el_val_t id = engram_node_full(content, EL_STR("InternalStateEvent"), EL_STR("state-event"), sal, imp, conf, EL_STR("Episodic"), EL_STR("[\"internal-state\",\"InternalStateEvent\"]"));
+}
-  return el_str_concat(el_str_concat(EL_STR("{\"ok\":true,\"id\":\""), id), EL_STR("\"}"));
+
+el_val_t route_load(el_val_t method, el_val_t path, el_val_t body) {
+  el_val_t p_raw = json_get_string(body, EL_STR("path"));
+  el_val_t dir_raw = env(EL_STR("ENGRAM_DATA_DIR"));
+  el_val_t dir = ({ el_val_t _if_result_15 = 0; if (str_eq(dir_raw, EL_STR(""))) { _if_result_15 = (EL_STR("/tmp/engram")); } else { _if_result_15 = (dir_raw); } _if_result_15; });
+  el_val_t p = ({ el_val_t _if_result_16 = 0; if (str_eq(p_raw, EL_STR(""))) { _if_result_16 = (el_str_concat(dir, EL_STR("/snapshot.json"))); } else { _if_result_16 = (p_raw); } _if_result_16; });
+  engram_load(p);
+  return ok_json();
+  return 0;
+}
+
+el_val_t route_health(el_val_t method, el_val_t path, el_val_t body) {
+  return EL_STR("{\"status\":\"ok\",\"engine\":\"engram-runtime-native\"}");
   return 0;
 }
 
 el_val_t route_sync(el_val_t method, el_val_t path, el_val_t body) {
-  el_val_t dir = env(EL_STR("ENGRAM_DATA_DIR"));
+  el_val_t dir_raw = env(EL_STR("ENGRAM_DATA_DIR"));
-  if (str_eq(dir, EL_STR(""))) {
+  el_val_t dir = ({ el_val_t _if_result_17 = 0; if (str_eq(dir_raw, EL_STR(""))) { _if_result_17 = (EL_STR("/tmp/engram")); } else { _if_result_17 = (dir_raw); } _if_result_17; });
-    dir = EL_STR("/tmp/engram");
+  el_val_t snap_path = el_str_concat(dir, EL_STR("/.sync-export.json"));
-  }
-  el_val_t snap_path = el_str_concat(dir, EL_STR("/sync-export.json"));
   engram_save(snap_path);
   el_val_t snap = fs_read(snap_path);
   if (str_eq(snap, EL_STR(""))) {
@@ -273,36 +277,68 @@ el_val_t route_sync(el_val_t method, el_val_t path, el_val_t body) {
   return 0;
 }
 
-el_val_t route_save(el_val_t method, el_val_t path, el_val_t body) {
+el_val_t route_load_merge(el_val_t method, el_val_t path, el_val_t body) {
   el_val_t p = json_get_string(body, EL_STR("path"));
   if (str_eq(p, EL_STR(""))) {
-    el_val_t dir = env(EL_STR("ENGRAM_DATA_DIR"));
+    return err_json(EL_STR("path is required"));
-    if (str_eq(dir, EL_STR(""))) {
-      dir = EL_STR("/tmp/engram");
-    }
-    p = el_str_concat(dir, EL_STR("/snapshot.json"));
   }
-  engram_save(p);
+  if (str_eq(fs_read(p), EL_STR(""))) {
-  return el_str_concat(el_str_concat(EL_STR("{\"ok\":true,\"path\":\""), p), EL_STR("\"}"));
+    return err_json(EL_STR("file missing or empty"));
+  }
+  el_val_t before_n = engram_node_count();
+  el_val_t before_e = engram_edge_count();
+  engram_load_merge(p);
+  el_val_t added_n = (engram_node_count() - before_n);
+  el_val_t added_e = (engram_edge_count() - before_e);
+  el_val_t saved = persist_canonical();
+  return el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(EL_STR("{\"ok\":true,\"nodes_added\":"), int_to_str(added_n)), EL_STR(",\"edges_added\":")), int_to_str(added_e)), EL_STR(",\"node_count\":")), int_to_str(engram_node_count())), EL_STR("}"));
   return 0;
 }
 
-el_val_t route_load(el_val_t method, el_val_t path, el_val_t body) {
+el_val_t route_emit_ise(el_val_t method, el_val_t path, el_val_t body) {
-  el_val_t p = json_get_string(body, EL_STR("path"));
+  el_val_t content = json_get_string(body, EL_STR("content"));
-  if (str_eq(p, EL_STR(""))) {
+  if (str_eq(content, EL_STR(""))) {
-    el_val_t dir = env(EL_STR("ENGRAM_DATA_DIR"));
+    return err_json(EL_STR("missing content"));
-    if (str_eq(dir, EL_STR(""))) {
-      dir = EL_STR("/tmp/engram");
-    }
-    p = el_str_concat(dir, EL_STR("/snapshot.json"));
   }
-  engram_load(p);
+  el_val_t sal = el_from_float(0.3);
-  return ok_json();
+  el_val_t imp = el_from_float(0.3);
+  el_val_t conf = el_from_float(0.8);
+  el_val_t id = engram_node_full(content, EL_STR("InternalStateEvent"), EL_STR("state-event"), sal, imp, conf, EL_STR("Episodic"), EL_STR("[\"internal-state\",\"InternalStateEvent\"]"));
+  el_val_t ret_raw = env(EL_STR("ENGRAM_ISE_RETENTION_MS"));
+  el_val_t ret_ms = ({ el_val_t _if_result_18 = 0; if (str_eq(ret_raw, EL_STR(""))) { _if_result_18 = (172800000); } else { _if_result_18 = (str_to_int(ret_raw)); } _if_result_18; });
+  el_val_t pruned = engram_prune_telemetry(ret_ms);
+  return el_str_concat(el_str_concat(el_str_concat(el_str_concat(EL_STR("{\"ok\":true,\"id\":\""), id), EL_STR("\",\"pruned\":")), int_to_str(pruned)), EL_STR("}"));
   return 0;
 }
 
-el_val_t route_health(el_val_t method, el_val_t path, el_val_t body) {
+el_val_t route_capture_knowledge(el_val_t method, el_val_t path, el_val_t body) {
-  return EL_STR("{\"status\":\"ok\",\"engine\":\"engram-runtime-native\"}");
+  el_val_t content = json_get_string(body, EL_STR("content"));
+  if (str_eq(content, EL_STR(""))) {
+    return err_json(EL_STR("missing content"));
+  }
+  el_val_t title = json_get_string(body, EL_STR("title"));
+  el_val_t label = ({ el_val_t _if_result_19 = 0; if (str_eq(title, EL_STR(""))) { _if_result_19 = (str_slice(content, 0, 60)); } else { _if_result_19 = (title); } _if_result_19; });
+  el_val_t category_raw = json_get_string(body, EL_STR("category"));
+  el_val_t category = ({ el_val_t _if_result_20 = 0; if (str_eq(category_raw, EL_STR(""))) { _if_result_20 = (EL_STR("other")); } else { _if_result_20 = (category_raw); } _if_result_20; });
+  el_val_t ktier_raw = json_get_string(body, EL_STR("tier"));
+  el_val_t ktier = ({ el_val_t _if_result_21 = 0; if (str_eq(ktier_raw, EL_STR(""))) { _if_result_21 = (EL_STR("note")); } else { _if_result_21 = (ktier_raw); } _if_result_21; });
+  el_val_t project = json_get_string(body, EL_STR("project"));
+  el_val_t tags_raw = json_get_raw(body, EL_STR("tags"));
+  el_val_t tags_base = ({ el_val_t _if_result_22 = 0; if (str_eq(tags_raw, EL_STR(""))) { _if_result_22 = (EL_STR("[]")); } else { _if_result_22 = (tags_raw); } _if_result_22; });
+  el_val_t base_len = str_len(tags_base);
+  el_val_t head = str_slice(tags_base, 0, (base_len - 1));
+  el_val_t sep = ({ el_val_t _if_result_23 = 0; if (str_eq(head, EL_STR("["))) { _if_result_23 = (EL_STR("")); } else { _if_result_23 = (EL_STR(",")); } _if_result_23; });
+  el_val_t safe_cat = str_replace(category, EL_STR("\""), EL_STR("'"));
+  el_val_t safe_tier = str_replace(ktier, EL_STR("\""), EL_STR("'"));
+  el_val_t safe_proj = str_replace(project, EL_STR("\""), EL_STR("'"));
+  el_val_t proj_tag = ({ el_val_t _if_result_24 = 0; if (str_eq(safe_proj, EL_STR(""))) { _if_result_24 = (EL_STR("")); } else { _if_result_24 = (el_str_concat(el_str_concat(EL_STR(",\"project:"), safe_proj), EL_STR("\""))); } _if_result_24; });
+  el_val_t tags = el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(el_str_concat(head, sep), EL_STR("\"category:")), safe_cat), EL_STR("\",\"tier:")), safe_tier), EL_STR("\"")), proj_tag), EL_STR("]"));
+  el_val_t sal = el_from_float(0.5);
+  el_val_t imp = el_from_float(0.5);
+  el_val_t conf = el_from_float(0.9);
+  el_val_t id = engram_node_full(content, EL_STR("Knowledge"), label, sal, imp, conf, EL_STR("Semantic"), tags);
+  el_val_t saved = persist_canonical();
+  return el_str_concat(el_str_concat(EL_STR("{\"ok\":true,\"id\":\""), id), EL_STR("\"}"));
   return 0;
 }
 
@@ -329,12 +365,15 @@ el_val_t handle_request(el_val_t method, el_val_t path, el_val_t body) {
       return route_health(method, path, body);
     }
   }
-  if (str_eq(method, EL_STR("POST")) && str_starts_with(clean, EL_STR("/api/neuron/state-events"))) {
+  if (str_eq(method, EL_STR("POST")) && str_eq(clean, EL_STR("/api/neuron/state-events"))) {
-    return route_create_ise(method, path, body);
+    return route_emit_ise(method, path, body);
   }
   if (!check_auth_ok(method, body)) {
     return err_json(EL_STR("unauthorized"));
   }
+  if (str_eq(method, EL_STR("POST")) && str_eq(clean, EL_STR("/api/neuron/knowledge/capture"))) {
+    return route_capture_knowledge(method, path, body);
+  }
   if (str_eq(method, EL_STR("GET")) && (str_eq(clean, EL_STR("/api/stats")) || str_eq(clean, EL_STR("/stats")))) {
     return route_stats(method, path, body);
   }
@@ -374,32 +413,40 @@ el_val_t handle_request(el_val_t method, el_val_t path, el_val_t body) {
   if (str_eq(method, EL_STR("POST")) && (str_eq(clean, EL_STR("/api/strengthen")) || str_eq(clean, EL_STR("/strengthen")))) {
     return route_strengthen(method, path, body);
   }
-  if (str_eq(method, EL_STR("GET")) && (str_eq(clean, EL_STR("/api/sync")) || str_eq(clean, EL_STR("/sync")))) {
-    return route_sync(method, path, body);
-  }
   if (str_eq(method, EL_STR("POST")) && (str_eq(clean, EL_STR("/api/save")) || str_eq(clean, EL_STR("/save")))) {
     return route_save(method, path, body);
   }
   if (str_eq(method, EL_STR("POST")) && (str_eq(clean, EL_STR("/api/load")) || str_eq(clean, EL_STR("/load")))) {
     return route_load(method, path, body);
   }
+  if (str_eq(method, EL_STR("POST")) && (str_eq(clean, EL_STR("/api/load-merge")) || str_eq(clean, EL_STR("/load-merge")))) {
+    return route_load_merge(method, path, body);
+  }
+  if (str_eq(method, EL_STR("GET")) && str_eq(clean, EL_STR("/api/sync"))) {
+    return route_sync(method, path, body);
+  }
   return el_str_concat(el_str_concat(EL_STR("{\"error\":\"not found\",\"path\":\""), clean), EL_STR("\"}"));
   return 0;
 }
 
 int main(int _argc, char** _argv) {
   el_runtime_init_args(_argc, _argv);
-  bind_str = env(EL_STR("ENGRAM_BIND"));
+  bind_raw = env(EL_STR("ENGRAM_BIND"));
-  if (str_eq(bind_str, EL_STR(""))) {
+  bind_str = ({ el_val_t _if_result_25 = 0; if (str_eq(bind_raw, EL_STR(""))) { _if_result_25 = (EL_STR(":8742")); } else { _if_result_25 = (bind_raw); } _if_result_25; });
-    bind_str = EL_STR(":8742");
-  }
   port = parse_port(bind_str);
-  data_dir = env(EL_STR("ENGRAM_DATA_DIR"));
+  data_dir_raw = env(EL_STR("ENGRAM_DATA_DIR"));
-  if (str_eq(data_dir, EL_STR(""))) {
+  data_dir = ({ el_val_t _if_result_26 = 0; if (str_eq(data_dir_raw, EL_STR(""))) { _if_result_26 = (EL_STR("/tmp/engram")); } else { _if_result_26 = (data_dir_raw); } _if_result_26; });
-    data_dir = EL_STR("/tmp/engram");
-  }
   snapshot_path = el_str_concat(data_dir, EL_STR("/snapshot.json"));
   engram_load(snapshot_path);
+  boot_snap = fs_read(snapshot_path);
+  if (!str_eq(boot_snap, EL_STR(""))) {
+    if (engram_node_count() == 0) {
+      println(EL_STR("[engram] WARNING: snapshot.json is non-empty but load produced 0 nodes \xe2\x80\x94 preserving copy at snapshot.failed-load.json"));
+      fs_write(el_str_concat(data_dir, EL_STR("/snapshot.failed-load.json")), boot_snap);
+    } else {
+      fs_write(el_str_concat(data_dir, EL_STR("/snapshot.boot-backup.json")), boot_snap);
+    }
+  }
   println(EL_STR("[engram] runtime-native graph engine"));
   println(el_str_concat(EL_STR("[engram] data_dir="), data_dir));
   println(el_str_concat(EL_STR("[engram] node_count="), int_to_str(engram_node_count())));

engram/src/server.el

@@ -76,13 +76,43 @@ fn route_stats(method: String, path: String, body: String) -> String {
     engram_stats_json()
 }
 
+// (2026-07-18 self-review) Scoping sweep: `let` inside an if-block creates an
+// inner scope only — it does NOT mutate the outer binding (documented with
+// evidence in awareness.el, 2026-05-25). Every default/reassignment below used
+// that broken pattern, so defaults never applied: nodes were created with
+// node_type="" and salience=0.0, /api/search and /api/activate ALWAYS ran with
+// q="" regardless of input, edges defaulted to relation=""/weight=0.0, and
+// save/load with no "path" hit engram_save(""). Rewritten to the
+// `let x = if cond { a } else { b }` expression form (the pattern the newer
+// routes route_emit_ise/route_capture_knowledge already use correctly).
+// persist_canonical — save the canonical snapshot after a durable write.
+//
+// WHY (2026-07-22 self-review): the 2026-07-21 fix correctly stopped READ
+// routes from writing the canonical snapshot.json — but nothing was left
+// that saved it on WRITE. Every mutation (node create, edge create,
+// knowledge capture, forget, merge) lived only in RAM until someone POSTed
+// /api/save manually; a process restart silently discarded everything since
+// the last manual save. Observed live: two engram restarts during the
+// 2026-07-22 review reverted the store to a ~17h-old snapshot, destroying
+// same-day writes. Reads must never write the canonical; writes must always
+// persist it. ISE telemetry is deliberately excluded (48h-pruned, loss-
+// tolerant, ~2/min — snapshotting the whole store per heartbeat is waste;
+// any durable write that follows persists the pruning too).
+fn persist_canonical() -> Int {
+    let dir_raw: String = env("ENGRAM_DATA_DIR")
+    let dir: String = if str_eq(dir_raw, "") { "/tmp/engram" } else { dir_raw }
+    engram_save(dir + "/snapshot.json")
+    return 1
+}
+
 fn route_create_node(method: String, path: String, body: String) -> String {
     let content: String = json_get_string(body, "content")
-    let node_type: String = json_get_string(body, "node_type")
+    let nt_raw: String = json_get_string(body, "node_type")
-    if str_eq(node_type, "") { let node_type = "Memory" }
+    let node_type: String = if str_eq(nt_raw, "") { "Memory" } else { nt_raw }
-    let salience: Float = json_get_float(body, "salience")
+    let sal_raw: Float = json_get_float(body, "salience")
-    if salience == 0.0 { let salience = 0.5 }
+    let salience: Float = if sal_raw == 0.0 { 0.5 } else { sal_raw }
     let id: String = engram_node(content, node_type, salience)
+    let saved: Int = persist_canonical()
     "{\"id\":\"" + id + "\",\"content\":\"" + content + "\",\"node_type\":\"" + node_type + "\"}"
 }
 
@@ -103,13 +133,14 @@ fn route_scan_nodes(method: String, path: String, body: String) -> String {
 }
 
 // route_scan_edges — bulk export of all edges as a JSON array. Implemented
-// via engram_save → fs_read of the canonical on-disk snapshot, which the
+// via engram_save → fs_read of a SCRATCH export path. (2026-07-21 self-review:
-// runtime keeps in lockstep with the in-memory graph. Live against the
+// previously this saved over the canonical snapshot.json on every GET — if the
-// running graph, not a stale export.
+// process ever booted with a partial/empty store, the first read request
+// clobbered the good snapshot. Read routes must never write the canonical path.)
 fn route_scan_edges(method: String, path: String, body: String) -> String {
-    let dir: String = env("ENGRAM_DATA_DIR")
+    let dir_raw: String = env("ENGRAM_DATA_DIR")
-    if str_eq(dir, "") { let dir = "/tmp/engram" }
+    let dir: String = if str_eq(dir_raw, "") { "/tmp/engram" } else { dir_raw }
-    let snap_path: String = dir + "/snapshot.json"
+    let snap_path: String = dir + "/.scan-export.json"
     engram_save(snap_path)
     let snap: String = fs_read(snap_path)
     if str_eq(snap, "") { return "[]" }
@@ -122,40 +153,34 @@ fn route_scan_edges(method: String, path: String, body: String) -> String {
 }
 
 fn route_search(method: String, path: String, body: String) -> String {
-    let q: String = ""
+    let q: String = if str_eq(method, "GET") { query_param(path, "q") } else { json_get_string(body, "query") }
-    if str_eq(method, "GET") {
+    let lim_url: Int = query_int(path, "limit", 0)
-        let q = query_param(path, "q")
+    let lim_body: Int = json_get_int(body, "limit")
-    } else {
+    let lim_either: Int = if lim_url > 0 { lim_url } else { lim_body }
-        let q = json_get_string(body, "query")
+    let limit: Int = if lim_either > 0 { lim_either } else { 20 }
-    }
-    let limit: Int = query_int(path, "limit", 20)
-    if limit == 0 { let limit = json_get_int(body, "limit") }
-    if limit == 0 { let limit = 20 }
     return engram_search_json(q, limit)
 }
 
 fn route_activate(method: String, path: String, body: String) -> String {
-    let q: String = ""
+    let q: String = if str_eq(method, "GET") { query_param(path, "q") } else { json_get_string(body, "query") }
-    let depth: Int = 3
+    // Guard: engram_activate with an empty query matches zero seeds, which
-    if str_eq(method, "GET") {
+    // zeroes ALL carried working-memory weights (documented in awareness.el
-        let q = query_param(path, "q")
+    // perceive()). Never let an empty activation through to wipe WM.
-        let depth = query_int(path, "depth", 3)
+    if str_eq(q, "") { return err_json("missing query") }
-    } else {
+    let d_raw: Int = if str_eq(method, "GET") { query_int(path, "depth", 3) } else { json_get_int(body, "depth") }
-        let q = json_get_string(body, "query")
+    let depth: Int = if d_raw > 0 { d_raw } else { 3 }
-        let bd: Int = json_get_int(body, "depth")
-        if bd > 0 { let depth = bd }
-    }
     return "{\"results\":" + engram_activate_json(q, depth) + "}"
 }
 
 fn route_create_edge(method: String, path: String, body: String) -> String {
     let from_id: String = json_get_string(body, "from_id")
     let to_id: String = json_get_string(body, "to_id")
-    let relation: String = json_get_string(body, "relation")
+    let rel_raw: String = json_get_string(body, "relation")
-    if str_eq(relation, "") { let relation = "associates" }
+    let relation: String = if str_eq(rel_raw, "") { "associates" } else { rel_raw }
-    let weight: Float = json_get_float(body, "weight")
+    let w_raw: Float = json_get_float(body, "weight")
-    if weight == 0.0 { let weight = 0.5 }
+    let weight: Float = if w_raw == 0.0 { 0.5 } else { w_raw }
     engram_connect(from_id, to_id, weight, relation)
+    let saved: Int = persist_canonical()
     "{\"ok\":true,\"from_id\":\"" + from_id + "\",\"to_id\":\"" + to_id + "\",\"relation\":\"" + relation + "\"}"
 }
 
@@ -170,6 +195,7 @@ fn route_strengthen(method: String, path: String, body: String) -> String {
     let id: String = json_get_string(body, "node_id")
     if str_eq(id, "") { return err_json("missing node_id") }
     engram_strengthen(id)
+    let saved: Int = persist_canonical()
     ok_json()
 }
 
@@ -177,27 +203,24 @@ fn route_forget(method: String, path: String, body: String) -> String {
     let id: String = extract_id(path, "/api/nodes/")
     if str_eq(id, "") { return err_json("missing id") }
     engram_forget(id)
+    let saved: Int = persist_canonical()
     ok_json()
 }
 
 fn route_save(method: String, path: String, body: String) -> String {
-    let p: String = json_get_string(body, "path")
+    let p_raw: String = json_get_string(body, "path")
-    if str_eq(p, "") {
+    let dir_raw: String = env("ENGRAM_DATA_DIR")
-        let dir: String = env("ENGRAM_DATA_DIR")
+    let dir: String = if str_eq(dir_raw, "") { "/tmp/engram" } else { dir_raw }
-        if str_eq(dir, "") { let dir = "/tmp/engram" }
+    let p: String = if str_eq(p_raw, "") { dir + "/snapshot.json" } else { p_raw }
-        let p = dir + "/snapshot.json"
-    }
     engram_save(p)
     "{\"ok\":true,\"path\":\"" + p + "\"}"
 }
 
 fn route_load(method: String, path: String, body: String) -> String {
-    let p: String = json_get_string(body, "path")
+    let p_raw: String = json_get_string(body, "path")
-    if str_eq(p, "") {
+    let dir_raw: String = env("ENGRAM_DATA_DIR")
-        let dir: String = env("ENGRAM_DATA_DIR")
+    let dir: String = if str_eq(dir_raw, "") { "/tmp/engram" } else { dir_raw }
-        if str_eq(dir, "") { let dir = "/tmp/engram" }
+    let p: String = if str_eq(p_raw, "") { dir + "/snapshot.json" } else { p_raw }
-        let p = dir + "/snapshot.json"
-    }
     engram_load(p)
     ok_json()
 }
@@ -219,15 +242,36 @@ fn route_health(method: String, path: String, body: String) -> String {
 // (it skips nodes already present by ID). Auth-exempt: same-host internal call.
 // (2026-06-27 self-review: added this route to fix silent 10-min sync failures)
 fn route_sync(method: String, path: String, body: String) -> String {
-    let dir: String = env("ENGRAM_DATA_DIR")
+    let dir_raw: String = env("ENGRAM_DATA_DIR")
-    if str_eq(dir, "") { let dir = "/tmp/engram" }
+    let dir: String = if str_eq(dir_raw, "") { "/tmp/engram" } else { dir_raw }
-    let snap_path: String = dir + "/snapshot.json"
+    // 2026-07-21 self-review: export to a scratch path, never the canonical
+    // snapshot.json — read routes must not be able to clobber the good snapshot.
+    let snap_path: String = dir + "/.sync-export.json"
     engram_save(snap_path)
     let snap: String = fs_read(snap_path)
     if str_eq(snap, "") { return "{\"nodes\":[],\"edges\":[]}" }
     return snap
 }
 
+// route_load_merge — POST /api/load-merge {"path": "..."} — merge a snapshot
+// file into the live store WITHOUT resetting it (engram_load_merge skips nodes
+// already present by id). Added 2026-07-21 self-review to restore the 244 kn-
+// identity Knowledge nodes lost from the snapshot lineage between 05-13 and
+// 07-13. Requires an explicit path: refuses to run without one so it can never
+// be triggered accidentally against a default.
+fn route_load_merge(method: String, path: String, body: String) -> String {
+    let p: String = json_get_string(body, "path")
+    if str_eq(p, "") { return err_json("path is required") }
+    if str_eq(fs_read(p), "") { return err_json("file missing or empty") }
+    let before_n: Int = engram_node_count()
+    let before_e: Int = engram_edge_count()
+    engram_load_merge(p)
+    let added_n: Int = engram_node_count() - before_n
+    let added_e: Int = engram_edge_count() - before_e
+    let saved: Int = persist_canonical()
+    "{\"ok\":true,\"nodes_added\":" + int_to_str(added_n) + ",\"edges_added\":" + int_to_str(added_e) + ",\"node_count\":" + int_to_str(engram_node_count()) + "}"
+}
+
 // route_emit_ise — write an InternalStateEvent node from the soul daemon.
 //
 // Endpoint: POST /api/neuron/state-events
@@ -241,10 +285,20 @@ fn route_sync(method: String, path: String, body: String) -> String {
 //
 // Salience/importance set to match engram_node_full ISE defaults used by the
 // in-process fallback path in awareness.el (salience=0.3, importance=0.3,
-// confidence=0.8, tier=Episodic). High temporal_decay_rate (1.617) — ISEs
+// confidence=0.8, tier=Episodic).
-// are inherently transient; they should decay faster than structural knowledge.
 // (2026-06-26 self-review: added this route after discovering ise_post was
 // silently failing — the soul posts here but the endpoint didn't exist.)
+//
+// Retention (2026-07-16 self-review): an earlier comment here claimed ISEs
+// got temporal_decay_rate=1.617 — that was never implemented (engram_node_full
+// hardcodes 0.0), and per-node decay only dampens activation anyway; it never
+// removes nodes. By 2026-07-16 ISEs were 75% of the store (10,175 of 13,522
+// nodes, ~4,300/day, unbounded). ISEs are already WM-excluded in
+// engram_activate, so the fix is retention, not decay: every insert calls
+// engram_prune_telemetry(), a single O(nodes+edges) compaction pass that
+// removes ISEs older than ENGRAM_ISE_RETENTION_MS (default 48h), protecting
+// "session-start" labels and self_review events as durable history. At
+// ~3 ISEs/min this bounds telemetry at ~8.6k nodes instead of growing forever.
 fn route_emit_ise(method: String, path: String, body: String) -> String {
     let content: String = json_get_string(body, "content")
     if str_eq(content, "") { return err_json("missing content") }
@@ -256,6 +310,64 @@ fn route_emit_ise(method: String, path: String, body: String) -> String {
         sal, imp, conf,
         "Episodic", "[\"internal-state\",\"InternalStateEvent\"]"
     )
+    let ret_raw: String = env("ENGRAM_ISE_RETENTION_MS")
+    let ret_ms: Int = if str_eq(ret_raw, "") { 172800000 } else { str_to_int(ret_raw) }
+    let pruned: Int = engram_prune_telemetry(ret_ms)
+    "{\"ok\":true,\"id\":\"" + id + "\",\"pruned\":" + int_to_str(pruned) + "}"
+}
+
+// ── Knowledge capture ─────────────────────────────────────────────────────────
+//
+// route_capture_knowledge — direct Knowledge-node capture over HTTP.
+//
+// Endpoint: POST /api/neuron/knowledge/capture   (auth required: "_auth" in body)
+// Body:     {"content": "...", "title": "...", "category": "...",
+//            "tier": "note|lesson|canonical", "tags": [...], "project": "...",
+//            "_auth": "<key>"}
+//
+// WHY (2026-07-15 self-review): the world-ingestor integrator was designed
+// against this endpoint (its MCP-unavailable fallback), but the route never
+// existed — every direct push 404'd, and because the auth gate ran before
+// routing, the failure surfaced as {"error":"unauthorized"} and was
+// misdiagnosed for two weeks while world knowledge silently dropped.
+// POST /api/nodes was no substitute: it discards label/tags/tier, which
+// makes captured knowledge invisible to tag-scoped search and curiosity.
+//
+// The incoming knowledge tier (note/lesson/canonical) is preserved as a
+// "tier:<x>" tag rather than mapped onto Engram's cognitive tiers — Knowledge
+// nodes land in Semantic (stable reference), and the epistemic tier stays
+// queryable without inventing a lossy mapping.
+fn route_capture_knowledge(method: String, path: String, body: String) -> String {
+    let content: String = json_get_string(body, "content")
+    if str_eq(content, "") { return err_json("missing content") }
+    let title: String = json_get_string(body, "title")
+    let label: String = if str_eq(title, "") { str_slice(content, 0, 60) } else { title }
+    let category_raw: String = json_get_string(body, "category")
+    let category: String = if str_eq(category_raw, "") { "other" } else { category_raw }
+    let ktier_raw: String = json_get_string(body, "tier")
+    let ktier: String = if str_eq(ktier_raw, "") { "note" } else { ktier_raw }
+    let project: String = json_get_string(body, "project")
+    let tags_raw: String = json_get_raw(body, "tags")
+    let tags_base: String = if str_eq(tags_raw, "") { "[]" } else { tags_raw }
+    // Merge category/tier/project markers into the tag array. Search matches
+    // against the tags string, so these make captures findable by facet.
+    let base_len: Int = str_len(tags_base)
+    let head: String = str_slice(tags_base, 0, base_len - 1)
+    let sep: String = if str_eq(head, "[") { "" } else { "," }
+    let safe_cat: String = str_replace(category, "\"", "'")
+    let safe_tier: String = str_replace(ktier, "\"", "'")
+    let safe_proj: String = str_replace(project, "\"", "'")
+    let proj_tag: String = if str_eq(safe_proj, "") { "" } else { ",\"project:" + safe_proj + "\"" }
+    let tags: String = head + sep + "\"category:" + safe_cat + "\",\"tier:" + safe_tier + "\"" + proj_tag + "]"
+    let sal: Float = 0.5
+    let imp: Float = 0.5
+    let conf: Float = 0.9
+    let id: String = engram_node_full(
+        content, "Knowledge", label,
+        sal, imp, conf,
+        "Semantic", tags
+    )
+    let saved: Int = persist_canonical()
     "{\"ok\":true,\"id\":\"" + id + "\"}"
 }
 
@@ -295,6 +407,12 @@ fn handle_request(method: String, path: String, body: String) -> String {
         return err_json("unauthorized")
     }
 
+    // Knowledge capture (auth enforced above; the world-ingestor integrator
+    // and any headless session without MCP push knowledge through this)
+    if str_eq(method, "POST") && str_eq(clean, "/api/neuron/knowledge/capture") {
+        return route_capture_knowledge(method, path, body)
+    }
+
     // Stats
     if str_eq(method, "GET") && (str_eq(clean, "/api/stats") || str_eq(clean, "/stats")) {
         return route_stats(method, path, body)
@@ -351,6 +469,9 @@ fn handle_request(method: String, path: String, body: String) -> String {
     if str_eq(method, "POST") && (str_eq(clean, "/api/load") || str_eq(clean, "/load")) {
         return route_load(method, path, body)
     }
+    if str_eq(method, "POST") && (str_eq(clean, "/api/load-merge") || str_eq(clean, "/load-merge")) {
+        return route_load_merge(method, path, body)
+    }
 
     // Sync — soul daemon periodic pull of non-ISE knowledge into in-process graph
     if str_eq(method, "GET") && str_eq(clean, "/api/sync") {
@@ -362,16 +483,31 @@ fn handle_request(method: String, path: String, body: String) -> String {
 
 // ── Entry ─────────────────────────────────────────────────────────────────────
 
-let bind_str: String = env("ENGRAM_BIND")
+let bind_raw: String = env("ENGRAM_BIND")
-if str_eq(bind_str, "") { let bind_str = ":8742" }
+let bind_str: String = if str_eq(bind_raw, "") { ":8742" } else { bind_raw }
 let port: Int = parse_port(bind_str)
 
 // On startup, try to load any existing snapshot (best effort).
-let data_dir: String = env("ENGRAM_DATA_DIR")
+let data_dir_raw: String = env("ENGRAM_DATA_DIR")
-if str_eq(data_dir, "") { let data_dir = "/tmp/engram" }
+let data_dir: String = if str_eq(data_dir_raw, "") { "/tmp/engram" } else { data_dir_raw }
 let snapshot_path: String = data_dir + "/snapshot.json"
 engram_load(snapshot_path)
 
+// 2026-07-21 self-review boot guard: if the snapshot file has content but the
+// load produced 0 nodes, something is wrong (corrupt file / parse failure).
+// Preserve the evidence and warn loudly — and since read routes no longer write
+// the canonical path, a bad boot can no longer clobber the good snapshot.
+let boot_snap: String = fs_read(snapshot_path)
+if !str_eq(boot_snap, "") {
+    if engram_node_count() == 0 {
+        println("[engram] WARNING: snapshot.json is non-empty but load produced 0 nodes — preserving copy at snapshot.failed-load.json")
+        fs_write(data_dir + "/snapshot.failed-load.json", boot_snap)
+    } else {
+        // Good load: keep a boot-time backup of the snapshot as loaded.
+        fs_write(data_dir + "/snapshot.boot-backup.json", boot_snap)
+    }
+}
+
 println("[engram] runtime-native graph engine")
 println("[engram] data_dir=" + data_dir)
 println("[engram] node_count=" + int_to_str(engram_node_count()))

epm/src/install.el

@@ -17,6 +17,16 @@
 //   4. Append dep to order after all its transitive deps
 //   5. Deduplicate: skip already-ordered vessels
 
+// ── Cross-module forward declarations ─────────────────────────────────────────
+// Defined in sibling epm modules; resolved at link time. The `extern fn` decls
+// give elc the C prototypes so generated install.c compiles cleanly under strict
+// compilers (gcc>=14 / clang) that reject implicit function declarations.
+extern fn manifest_name(src: String) -> String                        // manifest.el
+extern fn manifest_deps(src: String) -> String                        // manifest.el
+extern fn registry_token() -> String                                  // registry.el
+extern fn registry_find(name: String, version: String) -> String     // registry.el
+extern fn registry_latest_version(name: String) -> String            // registry.el
+
 // ── Install paths ─────────────────────────────────────────────────────────────
 
 // packages_dir returns the root directory for installed vessels.

epm/src/registry.el

@@ -14,6 +14,15 @@
 //   EPM_REGISTRY_ORG — org name that hosts vessel repos (default: neuron-technologies)
 //   EPM_TOKEN      — Gitea personal access token (required for publish)
 
+// ── Cross-module forward declarations ─────────────────────────────────────────
+// These symbols are defined in sibling epm modules or the El runtime and are
+// resolved at link time. The `extern fn` decls give elc the C prototype so the
+// generated registry.c compiles cleanly under strict compilers (gcc>=14 / clang)
+// that reject implicit function declarations. Signature arity must match the
+// definition; return/param types are informational (all lower to el_val_t).
+extern fn config(key: String) -> String          // El runtime builtin
+extern fn read_installed() -> String              // install.el
+
 // ── Config helpers ────────────────────────────────────────────────────────────
 
 // registry_api_url returns the Gitea API base URL with no trailing slash.

epm/src/update.el

@@ -6,6 +6,15 @@
 // Depends on: registry.el (registry_latest_version, registry_find),
 //             install.el  (read_installed, install_vessel, installed_version)
 
+// ── Cross-module forward declarations ─────────────────────────────────────────
+// Defined in sibling epm modules; resolved at link time. The `extern fn` decls
+// give elc the C prototypes so generated update.c compiles cleanly under strict
+// compilers (gcc>=14 / clang) that reject implicit function declarations.
+extern fn read_installed() -> String                                  // install.el
+extern fn installed_version(name: String) -> String                   // install.el
+extern fn install_vessel(name: String, version: String) -> Bool      // install.el
+extern fn registry_latest_version(name: String) -> String            // registry.el
+
 // ── Semver helpers ────────────────────────────────────────────────────────────
 
 // semver_part extracts the Nth dot-separated component from a semver string.

lang/el-compiler/runtime/el_platform_win.h

@@ -75,6 +75,7 @@ static inline void* el_win_dlsym(void* handle, const char* name) {
 #include <direct.h>            /* _mkdir */
 #define mkdir(path, mode) _mkdir(path)     /* POSIX mkdir(path,mode) → _mkdir(path) */
 #define timegm _mkgmtime                   /* UTC tm → time_t */
+#define fsync(fd) _commit(fd)              /* no fsync() on Windows; _commit() (<io.h>) is the equiv */
 
 /* setenv/unsetenv: not in the Windows CRT; map to _putenv_s / SetEnvironmentVariable. */
 static inline int setenv(const char* name, const char* value, int overwrite) {

lang/el-compiler/runtime/el_runtime.h

@@ -632,6 +632,7 @@ el_val_t  engram_load(el_val_t path);
  * can pass results straight through without round-tripping ElList/ElMap
  * through json_stringify. */
 el_val_t  engram_get_node_json(el_val_t id);
+el_val_t  engram_get_node_by_label(el_val_t label);
 el_val_t  engram_search_json(el_val_t query, el_val_t limit);
 el_val_t  engram_scan_nodes_json(el_val_t limit, el_val_t offset);
 el_val_t  engram_scan_nodes_by_type_json(el_val_t node_type, el_val_t limit, el_val_t offset);

lang/el-compiler/runtime/el_seed.c

@@ -1072,6 +1072,7 @@ el_val_t __engram_save(el_val_t path)                       { return engram_save
 el_val_t __engram_load(el_val_t path)                       { return engram_load(path); }
 
 el_val_t __engram_get_node_json(el_val_t id)               { return engram_get_node_json(id); }
+el_val_t __engram_get_node_by_label(el_val_t label)        { return engram_get_node_by_label(label); }
 
 el_val_t __engram_search_json(el_val_t query, el_val_t limit) {
     return engram_search_json(query, limit);

lang/el-compiler/runtime/el_seed.h

@@ -226,6 +226,7 @@ el_val_t  __engram_activate(el_val_t query, el_val_t depth);
 el_val_t  __engram_save(el_val_t path);
 el_val_t  __engram_load(el_val_t path);
 el_val_t  __engram_get_node_json(el_val_t id);
+el_val_t  __engram_get_node_by_label(el_val_t label);
 el_val_t  __engram_search_json(el_val_t query, el_val_t limit);
 el_val_t  __engram_scan_nodes_json(el_val_t limit, el_val_t offset);
 el_val_t  __engram_scan_nodes_by_type_json(el_val_t node_type, el_val_t limit, el_val_t offset);

lang/el-compiler/src/codegen.el

@@ -2670,6 +2670,7 @@ fn builtin_arity(name: String) -> Int {
     if str_eq(name, "engram_save") { return 1 }
     if str_eq(name, "engram_load") { return 1 }
     if str_eq(name, "engram_get_node_json") { return 1 }
+    if str_eq(name, "engram_get_node_by_label") { return 1 }
     if str_eq(name, "engram_search_json") { return 2 }
     if str_eq(name, "engram_scan_nodes_json") { return 2 }
     if str_eq(name, "engram_neighbors_json") { return 3 }

lang/el-compiler/src/parser.el

@@ -23,10 +23,29 @@ fn tok_at(tokens: [Any], pos: Int) -> Map<String, Any> {
 }
 
 fn tok_kind(tokens: [Any], pos: Int) -> String {
+    // Out-of-range reads must report the Eof sentinel so every `== "Eof"`
+    // termination guard in the parser fires. Without this, reading past the
+    // single trailing Eof token returns runtime null (el_list_get OOB -> 0),
+    // which matches no delimiter, letting inner parse loops append AST nodes
+    // forever on malformed input -> unbounded allocation -> OOM.
+    let n: Int = native_list_len(tokens) / 2
+    if pos < 0 {
+        return "Eof"
+    }
+    if pos >= n {
+        return "Eof"
+    }
     native_list_get(tokens, pos * 2)
 }
 
 fn tok_value(tokens: [Any], pos: Int) -> String {
+    let n: Int = native_list_len(tokens) / 2
+    if pos < 0 {
+        return ""
+    }
+    if pos >= n {
+        return ""
+    }
     native_list_get(tokens, pos * 2 + 1)
 }
 
@@ -35,7 +54,12 @@ fn expect(tokens: [Any], pos: Int, kind: String) -> Int {
     if k == kind {
         return pos + 1
     }
-    // On mismatch just advance; error recovery is best-effort
+    // On mismatch, error recovery is best-effort. But never step PAST the Eof
+    // sentinel: once at Eof a mismatch means the input ended early, and
+    // advancing would run the cursor off the token list.
+    if k == "Eof" {
+        return pos
+    }
     pos + 1
 }
 

lang/releases/v1.0.0-20260501/el_platform_win.h

@@ -0,0 +1,186 @@
+#ifndef EL_PLATFORM_WIN_H
+#define EL_PLATFORM_WIN_H
+/*
+ * el_platform_win.h — Windows OS-boundary shim for el_runtime.c.
+ *
+ * Branch: feat/windows-el-runtime. Included ONLY when _WIN32 is defined; the POSIX build is
+ * untouched. Goal: let el_runtime.c (a BSD-sockets / dlfcn / fork host) compile and link with
+ * mingw-w64 into a native neuron.exe, with no behavioural change to the Linux/macOS build.
+ *
+ * What it maps:
+ *   - sockets  : winsock2 (same call names: socket/bind/listen/accept/recv/send/setsockopt).
+ *                Sockets close with closesocket() (see el_closesocket), and the stack must be
+ *                started once with WSAStartup — done automatically via a load-time constructor.
+ *   - dlsym    : el_runtime.c uses dlsym(RTLD_DEFAULT, name) to resolve callback/tool symbols
+ *                exported by the main module. Windows equivalent: GetProcAddress on the process
+ *                module. Link the soul with -Wl,--export-all-symbols so the symbols are findable.
+ *   - popen    : mapped to _popen/_pclose.
+ *   - threads  : UNCHANGED. mingw-w64 ships winpthreads, so <pthread.h> + -lpthread just work.
+ */
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#include <windows.h>
+#include <io.h>
+#include <process.h>
+
+/* Portable headers mingw-w64 provides (verified present). */
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>   /* strcasecmp */
+#include <ctype.h>
+#include <math.h>
+#include <time.h>
+#include <sys/time.h>  /* mingw-w64 provides gettimeofday here */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <errno.h>
+#include <pthread.h>
+
+/* ── socket close ─────────────────────────────────────────────────────────── */
+/* Winsock closes sockets with closesocket(), not close() (close() is for file fds). The POSIX
+   build defines the same helper as close() so the call sites are identical across platforms. */
+static inline int el_closesocket(SOCKET s) { return closesocket(s); }
+
+/* ── setsockopt optval type ───────────────────────────────────────────────── */
+/* Winsock's setsockopt takes optval as (const char*); POSIX takes (const void*), so el_runtime.c
+   passes &int directly. GCC 14+ makes that an error under -Wincompatible-pointer-types. Wrap it so
+   the runtime's POSIX-style call sites compile unchanged (defined before the macro so the wrapper
+   itself resolves to the real winsock setsockopt). */
+static inline int el_setsockopt(SOCKET s, int level, int optname, const void* optval, int optlen) {
+    return setsockopt(s, level, optname, (const char*)optval, optlen);
+}
+#define setsockopt(s, l, o, v, n) el_setsockopt((s), (l), (o), (v), (int)(n))
+
+/* ── winsock init (once, at load) ─────────────────────────────────────────── */
+static void el__win_net_init(void) {
+    static int inited = 0;
+    if (!inited) { WSADATA w; WSAStartup(MAKEWORD(2, 2), &w); inited = 1; }
+}
+__attribute__((constructor)) static void el__win_ctor(void) { el__win_net_init(); }
+
+/* ── dlsym → GetProcAddress ───────────────────────────────────────────────── */
+#ifndef RTLD_DEFAULT
+#define RTLD_DEFAULT ((void*)0)
+#endif
+static inline void* el_win_dlsym(void* handle, const char* name) {
+    (void)handle;
+    return (void*)(uintptr_t)GetProcAddress(GetModuleHandleA(NULL), name);
+}
+#define dlsym(h, n) el_win_dlsym((h), (n))
+
+/* ── popen / pclose ───────────────────────────────────────────────────────── */
+#define popen  _popen
+#define pclose _pclose
+
+/* ── misc POSIX → Win32 shims ─────────────────────────────────────────────── */
+#include <direct.h>            /* _mkdir */
+#define mkdir(path, mode) _mkdir(path)     /* POSIX mkdir(path,mode) → _mkdir(path) */
+#define timegm _mkgmtime                   /* UTC tm → time_t */
+
+/* setenv/unsetenv: not in the Windows CRT; map to _putenv_s / SetEnvironmentVariable. */
+static inline int setenv(const char* name, const char* value, int overwrite) {
+    (void)overwrite;
+    return _putenv_s(name, value ? value : "");
+}
+static inline int unsetenv(const char* name) {
+    /* _putenv_s(name, "") sets VAR="" rather than removing it.
+     * SetEnvironmentVariableA(name, NULL) truly deletes it from the Win32
+     * env block; then we sync the CRT cache with _putenv("NAME=").       */
+    SetEnvironmentVariableA(name, NULL);
+    size_t len = strlen(name);
+    char *buf = (char*)malloc(len + 2);
+    if (!buf) return -1;
+    memcpy(buf, name, len);
+    buf[len] = '=';
+    buf[len + 1] = '\0';
+    _putenv(buf);
+    free(buf);
+    return 0;
+}
+
+/* nanosleep — not available in MSVC/UCRT; approximate with Sleep(). */
+static inline int el_nanosleep(const struct timespec *req, struct timespec *rem) {
+    (void)rem;
+    DWORD ms = (DWORD)((req->tv_sec * 1000ULL) + (req->tv_nsec / 1000000ULL));
+    Sleep(ms ? ms : 1);
+    return 0;
+}
+#define nanosleep(req, rem) el_nanosleep((req), (rem))
+
+/* localtime_r/gmtime_r: Windows offers localtime_s/gmtime_s with reversed arg order. */
+static inline struct tm* localtime_r(const time_t* t, struct tm* out) {
+    return localtime_s(out, t) == 0 ? out : (struct tm*)0;
+}
+static inline struct tm* gmtime_r(const time_t* t, struct tm* out) {
+    return gmtime_s(out, t) == 0 ? out : (struct tm*)0;
+}
+
+/* ── libcurl: degradable stubs for the curl-less Windows build ─────────────── */
+/* The curl-less validation build (WITH_CURL=0) links no libcurl. el_runtime.c uses libcurl
+ * unconditionally for its HTTP client / LLM layer; these stubs let it compile and link so the
+ * runtime, HTTP *server*, graph and memory work natively on Windows. Live outbound HTTP/LLM calls
+ * degrade to a runtime error (curl_easy_perform returns an error) — matching the documented
+ * curl-less contract. When HAVE_CURL is defined (WITH_CURL=1) the real <curl/curl.h> is used and
+ * this whole block is compiled out. POSIX never sees this header, so the POSIX build is untouched. */
+#ifndef HAVE_CURL
+
+typedef void CURL;
+typedef int  CURLcode;
+
+#define CURLE_OK                    0
+#define CURLE_HTTP_RETURNED_ERROR   22
+#define CURL_ERROR_SIZE             256
+
+/* Option ids: values are irrelevant to the no-op setopt below; kept distinct for readability. */
+#define CURLOPT_URL              10002
+#define CURLOPT_WRITEFUNCTION    20011
+#define CURLOPT_WRITEDATA        10001
+#define CURLOPT_POSTFIELDS       10015
+#define CURLOPT_POSTFIELDSIZE      120
+#define CURLOPT_POST                47
+#define CURLOPT_HTTPHEADER       10023
+#define CURLOPT_TIMEOUT_MS         155
+#define CURLOPT_NOSIGNAL            99
+#define CURLOPT_USERAGENT        10018
+#define CURLOPT_FOLLOWLOCATION      52
+#define CURLOPT_ERRORBUFFER      10010
+#define CURLOPT_CUSTOMREQUEST    10036
+#define CURLOPT_FAILONERROR         45
+
+struct curl_slist { char* data; struct curl_slist* next; };
+
+static inline struct curl_slist* curl_slist_append(struct curl_slist* list, const char* s) {
+    struct curl_slist* node = (struct curl_slist*)malloc(sizeof(struct curl_slist));
+    if (!node) return list;
+    node->data = s ? strdup(s) : NULL;
+    node->next = NULL;
+    if (!list) return node;
+    struct curl_slist* p = list;
+    while (p->next) p = p->next;
+    p->next = node;
+    return list;
+}
+static inline void curl_slist_free_all(struct curl_slist* list) {
+    while (list) { struct curl_slist* n = list->next; free(list->data); free(list); list = n; }
+}
+
+static inline CURL* curl_easy_init(void) { return (CURL*)malloc(1); }
+static inline CURLcode curl_easy_setopt(CURL* h, int opt, ...) { (void)h; (void)opt; return CURLE_OK; }
+static inline CURLcode curl_easy_perform(CURL* h) { (void)h; return 7 /* CURLE_COULDNT_CONNECT */; }
+static inline void curl_easy_cleanup(CURL* h) { free(h); }
+static inline const char* curl_easy_strerror(CURLcode c) {
+    (void)c; return "libcurl not built in (curl-less build)";
+}
+
+#endif /* !HAVE_CURL */
+
+#endif /* EL_PLATFORM_WIN_H */

lang/releases/v1.0.0-20260501/el_runtime.h

@@ -758,6 +758,18 @@ el_val_t trace_span_start(el_val_t name);
 el_val_t trace_span_end(el_val_t span_handle);
 el_val_t emit_event(el_val_t name, el_val_t duration_ms);
 
+/* ── Runtime symbols required by the soul modules ──────────────────────────── */
+/* All implemented in el_runtime.c but omitted from this release header; the soul dist modules
+ * reference them directly, so the public header must export them. Declarations only — mirrors the
+ * mainline el_runtime.h and is platform-independent (no behavioural change to the POSIX build). */
+typedef el_val_t (*http_handler_fn)(el_val_t method, el_val_t path, el_val_t body);
+typedef el_val_t (*http_handler4_fn)(el_val_t method, el_val_t path, el_val_t body, el_val_t headers);
+el_val_t  el_arena_push(void);
+el_val_t  el_arena_pop(el_val_t mark);
+void      http_serve_async(el_val_t port, el_val_t handler);
+el_val_t  engram_get_node_by_label(el_val_t label);
+el_val_t  engram_prune_telemetry(el_val_t older_than_ms);
+
 #ifdef __cplusplus
 }
 #endif