feat(recall): cross-session-continuity

soul.el

@@ -310,12 +310,36 @@ fn emit_session_start_event() -> Void {
     }
     let ts: Int = time_now()
 
+    // Load previous session summary at boot — stash in state for session_preload (issue #6).
+    // Primary: label-based. Fallback: vector search. Logs it so continuity is auditable.
+    let prev_sum_node: String = engram_get_node_by_label("session:summary")
+    let prev_sum_ok: Bool = !str_eq(prev_sum_node, "") && !str_eq(prev_sum_node, "null")
+    let prev_sum_content: String = if prev_sum_ok {
+        json_get(prev_sum_node, "content")
+    } else {
+        let sum_search: String = engram_search_json("SessionSummary session:summary previous-session", 2)
+        let sum_srch_ok: Bool = !str_eq(sum_search, "") && !str_eq(sum_search, "[]")
+        if sum_srch_ok {
+            let sn: String = json_array_get(sum_search, 0)
+            let stype: String = json_get(sn, "node_type")
+            let scontent: String = json_get(sn, "content")
+            if str_eq(stype, "SessionSummary") && !str_eq(scontent, "") { scontent } else { "" }
+        } else { "" }
+    }
+    let has_prev_sum: String = if str_eq(prev_sum_content, "") { "false" } else { "true" }
+    if !str_eq(prev_sum_content, "") {
+        state_set("soul_prev_session_summary", prev_sum_content)
+        println("[soul] previous session summary loaded (" + int_to_str(str_len(prev_sum_content)) + " chars)")
+    }
+
+
     let payload: String = "{\"event\":\"session_start\""
         + ",\"boot\":" + boot_num
         + ",\"cgi\":\"" + eff_cgi + "\""
         + ",\"node_count\":" + int_to_str(node_ct)
         + ",\"edge_count\":" + int_to_str(edge_ct)
         + ",\"identity_loaded\":" + has_identity
+        + ",\"prev_session_summary_loaded\":" + has_prev_sum
         + ",\"ts\":" + int_to_str(ts) + "}"
 
     let tags: String = "[\"internal-state\",\"session-start\",\"InternalStateEvent\"]"
@@ -324,7 +348,7 @@ fn emit_session_start_event() -> Void {
         el_from_float(0.9), el_from_float(0.9), el_from_float(1.0),
         "Episodic", tags
     )
-    println("[soul] session-start event logged (boot=" + boot_num + " nodes=" + int_to_str(node_ct) + " edges=" + int_to_str(edge_ct) + ")")
+    println("[soul] session-start event logged (boot=" + boot_num + " nodes=" + int_to_str(node_ct) + " edges=" + int_to_str(edge_ct) + " prev_summary=" + has_prev_sum + ")")
 }
 
 // layered_cycle — routes user-facing requests through the 4-layer consciousness stack.