diff --git a/opencode/decisions.yaml b/opencode/decisions.yaml
index 4860c0b8..fe1cb5a6 100644
--- a/opencode/decisions.yaml
+++ b/opencode/decisions.yaml
@@ -1041,3 +1041,28 @@ notes:
     integrations:
       - spoolman
     status: active
+  - id: 2026-10-12-sparkx-i7-last-job-and-notification
+    date: 2026-10-12
+    title: SparkX i7 last-job and notification report the whole print
+    decision: SparkX i7 print-complete automation (1791477238729) computes the last-job
+      helpers and the completion notification from summary_total (sum of the per-slot
+      accumulators), so a multi-colour print reports the whole print, not just the last
+      colour segment. Slot index is parsed with old_slot.split('_')[-1].
+    rationale: The latch automation (1791477238762) accumulates each colour segment into
+      input_number.sparkx_i7_slot_N_grams; the completion adds the final segment, then
+      sums them plus nonhelper_g. An earlier split(' ') bug left helper_idx empty, so the
+      total and last-job equalled only the final segment (12.02 g instead of the real 59.4
+      g). Do not revert to split(' ') or to per-segment last-job values.
+    entities:
+      - input_number.sparkx_i7_last_job_filament_weight
+      - input_number.sparkx_i7_last_job_cost
+      - automation.sparkx_i7_deduct_filament_in_spoolman_on_print_complete
+      - input_number.sparkx_i7_slot_1_grams
+      - input_number.sparkx_i7_slot_2_grams
+      - input_number.sparkx_i7_slot_3_grams
+      - input_number.sparkx_i7_slot_4_grams
+    files:
+      - automations.yaml
+    integrations:
+      - spoolman
+    status: active