fix(safety): crisis detection — 4 targeted fixes

- soul.el: fix state key bug in layered_cycle (conversation_history -> conv_history)
- safety.el: add indirect crisis location patterns to soft_bell phrase list
- soul.el: wire safety_augment_system into layered_cycle for soft_bell turns
- chat.el: load cross-session affective context at session start when distress signals found within 72h

soul.el

@@ -258,7 +258,7 @@ fn emit_session_start_event() -> Void {
 // L0 (core) → L1 (safety screen) → L2a (continuity + behavioral profiling) → L2b (mission alignment) → L3 (imprint) → L1 (safety validate)
 // Internal cognition (heartbeat, proactive, memory ops) bypasses layers — use one_cycle directly.
 fn layered_cycle(raw_input: String) -> String {
-    let history: String = state_get("conversation_history")
+    let history: String = state_get("conv_history")
     let session_id: String = state_get("current_session_id")
 
     // L1 in: safety screen
@@ -312,6 +312,15 @@ fn layered_cycle(raw_input: String) -> String {
         json_get(steward_result, "redirect_to")
     }
 
+    // L1 safety augment: if a soft bell fired, inject the safety directive into state
+    // so imprint_respond (and build_system_prompt) can incorporate it before the LLM call.
+    // Hard bell is handled above (early exit). Here we act on soft_bell only.
+    if str_eq(screen_action, "soft_bell") {
+        let base_system: String = state_get("soul_identity")
+        let augmented: String = safety_augment_system(base_system, raw_input)
+        state_set("soul_safety_system_augment", augmented)
+    }
+
     // L3: imprint responds
     let output: String = imprint_respond(aligned, imprint_id)