fix(reliability): cross-session-affective

- Fix state key mismatch: soul.el layered_cycle now reads conv_history
  (not conversation_history), unblocking the safety_score_distress_history
  history-amplification path in safety_threat_score
- Add safety_augment_system call on the main handle_chat path so the
  phrase-list bell detector fires on all chat turns, not just dharma rooms
- Add cross-session affective engram query in load_identity_context() at
  boot; stores distress/crisis signals from prior sessions under
  soul_affective_context with a 7-day soft recency filter

chat.el

@@ -374,6 +374,13 @@ fn handle_chat(body: String) -> String {
     let req_model: String = json_get(body, "model")
     let model: String = if str_eq(req_model, "") { chat_default_model() } else { req_model }
 
+    // Safety augmentation on the main chat path. Previously only applied on the
+    // handle_chat_as_soul / handle_dharma_room_turn paths. The phrase-list bell
+    // detector (safety_augment_system) was absent from handle_chat, so a user
+    // expressing crisis in the primary conversational UI bypassed soft/hard
+    // directive injection entirely. Applying it here before every llm_call_system.
+    let full_system = safety_augment_system(full_system, message)
+
     let raw_response: String = llm_call_system(model, full_system, message)
 
     let is_error: Bool = str_starts_with(raw_response, "{\"error\"")