docs(job-array-one-based-index): requirements, design and tasks; log bug-1898, bug-1899

Spec for numbering job-array elements from 1 (bug-1896): approved
requirements, a design reviewed over 20 rounds until clean (log in
research.md), and a 30-task plan. The design review found two live
apiserver defects, logged here: bracketed job_id/job_name filters are
never evaluated (bug-1898) and ControlJobByID re-dispatches earlier
selections (bug-1899).

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.kiro/specs/job-array-one-based-index/spec.json

@@ -0,0 +1,22 @@
+{
+  "feature_name": "job-array-one-based-index",
+  "created_at": "2026-09-30T07:09:58Z",
+  "updated_at": "2026-10-01T07:50:49Z",
+  "language": "en",
+  "phase": "tasks-generated",
+  "approvals": {
+    "requirements": {
+      "generated": true,
+      "approved": true
+    },
+    "design": {
+      "generated": true,
+      "approved": true
+    },
+    "tasks": {
+      "generated": true,
+      "approved": true
+    }
+  },
+  "ready_for_implementation": true
+}