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docs(runbook): record Windows host pre-migration baseline

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Phase A benchmark data (2026-05-17): VM lifecycle avg 60.6s boot,
smoke job avg 27s Win / 49s Linux, 100% success rate (12/12 burn-in).
B7 reference thresholds: Win ≤32s, Linux ≤59s.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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@@ -198,6 +198,46 @@ Estimated time: 2-4 hours including Windows Update.
---
## Windows host baseline
**Data**: 2026-05-17 (Phase A closure — commit `36913ab6`)
**Hardware**: Intel i9-10900X, 64 GB RAM, NVMe SSD
**Versioni**:
- `ci_orchestrator`: v2.0.0-phaseA (SHA `b4ca7f3`), Python 3.13.3
- `act_runner`: v1.0.2
**Benchmark infra — VM lifecycle** (`Measure-CIBenchmark.ps1`, 4 iter, template Windows):
| Phase | iter 1 | iter 2 | iter 3 | iter 4 | **media** |
| --------- | ------ | ------ | ------ | ------ | --------- |
| Clone (s) | 0.63 | 0.63 | 0.62 | 0.61 | **0.62** |
| Start (s) | 1.75 | 1.89 | 1.72 | 1.72 | **1.77** |
| IP (s) | 66.57 | 20.21 | 85.07 | 60.97 | **58.2** |
| WinRM (s) | 0.01 | 0.01 | 0.01 | 0.01 | **0.01** |
| Destroy(s)| 4.81 | 6.39 | 4.50 | 4.20 | **4.98** |
| Boot tot | 68.96 | 22.74 | 87.42 | 63.31 | **60.6** |
> Fase IP (20–85 s) = costo dominante e variabile (detect IP via VMware Tools). Normale, non bloccante.
**Tempo medio per job** (smoke `self-test.yml`, Gitea Actions, Passo 6 Phase A):
| Template | Transport | Wall time |
| -------------- | --------------------- | --------- |
| WinBuild2025 | in-guest git clone | 26 s |
| WinBuild2025 | host-side clone + zip | 28 s |
| LinuxBuild2404 | in-guest git clone | 51 s |
| LinuxBuild2404 | host-side clone + zip | 46 s |
| **media Win** | | **27 s** |
| **media Linux**| | **49 s** |
**Success rate**: 100 % — burn-in 12/12 (3 round × 4 job concorrenti, Passo 7 Phase A).
> Questi valori sono il baseline di riferimento per il criterio B7 ("tempo medio entro ±20% baseline Windows"). Margini: Win ≤ 32 s, Linux ≤ 59 s.
---
## Quick Reference
| Symptom | First command |