sync: auto-sync from HOWARD-HOME at 2026-07-13 11:11:22

Author: Howard Enos
Machine: HOWARD-HOME
Timestamp: 2026-07-13 11:11:22

.claude/standards/syncro/test-findings.md

@@ -150,3 +150,13 @@ confirm true state before any follow-up action.
 POST/GET customer; POST contact; POST ticket (+ number); POST ticket comment (hidden);
 POST add_line_item; POST invoice (from ticket); POST estimate + line_items + PUT recalc;
 POST appointment; POST schedule (paused). All parse under the shapes documented in `syncro.md`.
+
+## 2026-07-13 — Invoice line population is ASYNCHRONOUS after POST /invoices
+`POST /invoices` returns immediately, but the invoice's `line_items` are populated from the
+ticket's unbilled charges in the background. A `GET /invoices/{id}` fired in the same second
+can return a PARTIAL line set (observed: 10 of 17 lines / 18.0h of 28.0h on ACG-internal
+#32546, invoice 68040; a re-GET moments later showed all 17 / 28.0h). Verified the ticket held
+all 17 lines throughout. Rule: if the post-invoice verification shows fewer lines than the
+ticket, WAIT and re-GET before concluding lines were dropped — do NOT create a second invoice
+(it would double-bill the late-arriving lines). Large line counts (17) make the window visible;
+the usual 1-2 line invoices never showed it.