docs: Validated and recorded the live API/auth preflight gate, includin…

- ".gsd/milestones/M001/slices/S06/tasks/T01-SUMMARY.md"
- "scripts/s06-preflight.sh"
- "scripts/s06-preflight.test.sh"
- "README.md"

GSD-Task: S06/T01

.bg-shell/manifest.json

@@ -1,16 +1 @@
-[
-  {
-    "id": "e426dd27",
-    "label": "jobtracker-api-dll",
-    "command": "dotnet /home/pi/development/JobTracker/.gsd/worktrees/M001/JobTrackerApi/bin/Debug/net9.0/JobTrackerApi.dll",
-    "cwd": "/home/pi/.gsd/projects/a40e97ae9e8f/worktrees/M001",
-    "ownerSessionFile": "/home/pi/.gsd/sessions/--home-pi-development-JobTracker--/2026-03-27T07-47-13-751Z_c7885c29-a870-487a-969c-29460b7a5881.jsonl",
-    "persistAcrossSessions": false,
-    "startedAt": 1774597942244,
-    "processType": "server",
-    "group": null,
-    "readyPattern": null,
-    "readyPort": 5202,
-    "pid": 1175981
-  }
-]
+[]