docs(specs): init job-config-merge; project-config requirements

job-config-merge: spec initialized from its discovery brief.

project-config: requirements generated (9 requirements): nested projects
named by path, membership-based submit check with no inheritance and
overlapping membership, group-default then cluster-default project, open
mode until projects are defined, pending jobs held with a reason after
project changes, roll-up quotas, project visibility, a project scope for
job permissions covering the subtree and a project:view permission,
compatibility.

Roadmap: project-delegated-membership backlog item (runtime membership
edits by project managers, deferred).

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

.kiro/specs/project-config/spec.json

@@ -0,0 +1,22 @@
+{
+  "feature_name": "project-config",
+  "created_at": "2026-10-10T03:25:03Z",
+  "updated_at": "2026-10-10T03:48:51Z",
+  "language": "en",
+  "phase": "requirements-generated",
+  "approvals": {
+    "requirements": {
+      "generated": true,
+      "approved": false
+    },
+    "design": {
+      "generated": false,
+      "approved": false
+    },
+    "tasks": {
+      "generated": false,
+      "approved": false
+    }
+  },
+  "ready_for_implementation": false
+}