chore(git): isolate volatile runtime state files in .gitignore

.gitignore

@@ -28,3 +28,6 @@ var/
 swarms.json
 subagent-sessions.json
 conversation-nudge-tracker.json
+job-sidechats.json
+fleet/state.json
+fleet/health-status.json

job-sidechats.example.json

@@ -118,14 +118,14 @@
     "type": "persistent"
   },
   "heartbeat": {
-    "thread_uuid": "77acfb50-b6ca-4526-b8aa-1efd9e10d5bd",
+    "thread_uuid": "4a948d74-036c-458b-bc7a-9cb3da619db2",
     "agent": "opm",
     "title": "heartbeat",
     "type": "persistent",
-    "created_at": "2026-10-08T14:31:45.392643+00:00",
-    "dispatch_count": 44,
-    "rotated_from": "557a4177-901a-4b20-b193-21ac992d49a8",
-    "rotated_at": "2026-10-08T14:31:45.392657+00:00"
+    "created_at": "2026-10-10T02:40:03.363041+00:00",
+    "dispatch_count": 19,
+    "rotated_from": "77acfb50-b6ca-4526-b8aa-1efd9e10d5bd",
+    "rotated_at": "2026-10-10T02:40:03.363052+00:00"
   },
   "heartbeat-opm": {
     "thread_uuid": "ac8c3366-a2b4-407d-adc7-bfa18903c0f5",
@@ -446,14 +446,14 @@
     "rotated_at": "2026-10-09T00:51:44.427438+00:00"
   },
   "muse-auditor": {
-    "thread_uuid": "d0dfe7ea-4b30-414c-a15a-818f7b4a82ad",
+    "thread_uuid": "038acd60-1a87-4177-af6a-19ec88201022",
     "agent": "muse",
-    "title": "muse-audit-2026-10-09",
+    "title": "muse-audit-2026-10-10",
     "type": "persistent",
-    "created_at": "2026-10-09T00:01:38.258549+00:00",
-    "dispatch_count": 30,
-    "rotated_from": "31127eea-259d-412a-9590-7bef43cbf6ed",
-    "rotated_at": "2026-10-09T00:01:38.258559+00:00"
+    "created_at": "2026-10-10T13:00:11.009055+00:00",
+    "dispatch_count": 5,
+    "rotated_from": "d0dfe7ea-4b30-414c-a15a-818f7b4a82ad",
+    "rotated_at": "2026-10-10T13:00:11.009066+00:00"
   },
   "work-finder": {
     "thread_uuid": "16b052eb-acf1-410b-b9af-ee8c6b8bb8d5",