# T05 Phase 5 Evidence — Stabilization Window (2026-07-06)

Workplan: `CUST-WP-0054-T05`  
Parent runbook: `docs/state-hub-railiance01-cutover-plan.md`  
`no_secret_material_recorded: true`

## Window

| Field | Value |
| --- | --- |
| Started | 2026-07-06 ~17:35 UTC |
| Target close | 2026-07-09 17:35 UTC (72h) |
| Owner | custodian |
| Rollback | coulombcore `state-hub` Deployment + dumps retained ≥7 days |

**Phase 5 status: in progress.**

## Kickoff baseline (2026-07-06T17:41Z)

| Check | Result | Evidence |
| --- | --- | --- |
| Hub `/state/health` | **pass** | `{"status":"ok","db":"connected"}` via `state-hub-primary` |
| Row-count gate | **pass** | workstreams **640**, tasks **4002**, topics **14** (matches Phase 2 gate) |
| railiance01 pod | **pass** | `state-hub-76fdffdc9d-dtvpb` Running, **0** restarts (rev 7 @ `main-375961c`) |
| CNPG `state-hub-db` | **pass** | `Cluster in healthy state`, 1/1 |
| coulombcore rollback | **pass** | `state-hub` replicas=**0** (not deleted) |
| activity-core hub path | **pass** | in-cluster `http://state-hub.state-hub.svc.cluster.local:8000`; bridge **0** |
| Consistency sweeps | **pass** | 6/6 recent events `exit_code=0`, `skipped_missing=0` (post-17:15 UTC) |
| Sweep writeback host | **pass** | repos resolve `/home/tegwick/*` (Phase 4) |
| Workstation tunnel | **pass** | `state-hub-primary` connected + LIVE → railiance01 |
| Daily triage (post-cutover) | **pass** | manual trigger 2026-07-06T17:50Z; event `a99e644e`, report `daily-triage-2026-07-06-67685f1c.md` |
| issue-core emission | **unchanged** | `issue-core-coulombcore` tunnel connected; null-sink audit mode (Wave 4) |

Kickoff sweep (`source=phase5-kickoff`): **exit_code=0**, 10 repos processed, 0 missing.

## Day-1 check (2026-07-06T22:35Z)

`tools/phase5-stabilization-check.sh` — all green:

| Check | Result |
| --- | --- |
| `/state/health` + totals | **pass** — 640 workstreams / 4002 tasks / 14 topics |
| railiance01 pod | **pass** — `state-hub-76fdffdc9d-dtvpb`, 0 restarts, age ~4h |
| CNPG | **pass** — healthy 1/1 |
| coulombcore rollback | **pass** — replicas=0 |
| activity-core | **pass** — in-cluster URL; bridge replicas=0 |
| Sweeps (last 6) | **pass** — exit_code=0, proc=11, missing=0 |
| Daily triage | **pass** — last run 2026-07-06T17:50Z |
| Tunnels | **pass** — `state-hub-primary` connected + LIVE |

Window closes **2026-07-09 ~17:35 UTC** (~65h remaining at check time).

## Scheduled checks (activity-core)

| Definition | Schedule | Event type |
| --- | --- | --- |
| `phase5-stabilization-daily` (`f3a8c2e1…`) | `0 9 * * *` Europe/Berlin | `phase5_stabilization_check` |
| `phase5-stabilization-closeout` (`e7d2b5a8…`) | once `2026-07-09T17:35Z` | `phase5_stabilization_closeout` |

Hub-visible gates: health, totals (640/4002/14), last 6 sweeps, daily triage
freshness ≤36h. Closeout fails visibly when any gate is red; passes record
`operator_signoff_needed` for coulombcore teardown approval.

## Monitoring

Run daily (or after incidents):

```bash
~/the-custodian/tools/phase5-stabilization-check.sh
```

Sweep history (24h):

```bash
cd ~/state-hub
uv run python scripts/compare_consistency_sweep_parallel.py --since-hours 24
```

## Exit gates (T05 done)

From `docs/state-hub-railiance01-cutover-plan.md` verification checklist:

- [x] `/state/summary` totals match pre-cutover (±0)
- [x] activity-core **daily triage** succeeds once post-cutover (manual 2026-07-06T17:50Z)
- [x] activity-core **consistency sweeps** succeed without `fleet-state-hub-coulombcore`
- [x] Workstation `:8000` serves railiance01 hub
- [x] Writeback lands on railiance01 clone path
- [x] coulombcore hub scaled to 0
- [x] Cutover progress notes recorded (Phases 0–5)

**Close Phase 5 / mark T05 done when:** 72h window passes with no data-loss signals,
sweeps stay `exit_code=0` (lock_skipped acceptable), one post-cutover daily triage
succeeds, and operator approves coulombcore hub teardown window.

## Known watch items

1. **Sweep budget** — 300s processes ~8–10 dirty repos per tick; expect gradual
   reconciliation across 15m cron cycles (not a blocker).
2. ~~**Image tag**~~ — **resolved 2026-07-07T01:10Z**: Forgejo CI `image.yaml #31`
   published `main-0ca9c27` (working-memory sweep commit support); Helm rev 8
   deployed; `/state/health` ok. Prior `main-375961c` (rev 7) superseded.
3. **Stale tunnel** — `state-hub-coulombcore` shows `[STALE]`; safe to retire after
   stabilization if unused.
4. **issue-core** — still coulombcore-chained; tracked under Wave 4 / T06, not T05.

## References

- Phase 4: `docs/state-hub-railiance01-cutover-phase4-2026-07-06.md`
- Sweep runbook: `state-hub/docs/consistency-sweep-runbook.md`