docs(vm303): full clone, template 300 sters, handoff inchis

VM 303 rula ca linked clone din VM 300, deci template-ul contaminat nu putea
fi sters. Transformat in full clone si VM 300 eliminat din infrastructura.

Metoda: zfs send/recv local + swap de volid in config. `qm move-disk` nu era
o optiune — PVE respinge mutarea pe acelasi storage, iar pentru zvol-uri
conditia din Qemu.pm:4688 e mereu adevarata (numele n-are sufix de format).

- inventarele nu mai listeaza VM 300; VM 310 ramane singurul template
- clone-vm300.sh: comentariul spune de ce sursa e 310 (numele e istoric)
- handoff-ul sters la cererea utilizatorului; faptele care mai conteaza sunt
  mutate inline in README-uri, ca sa nu ramana referinte moarte

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MoFGxftQw92PX4Sdkn94pv

proxmox/README.md

@@ -440,7 +440,7 @@ ssh root@10.0.20.201 "qm snapshot 302 pre-test --description 'Before ROA test'"
 | **109** | **standby-dr** | **Windows Server** | **`vm109-windows-dr/`** |
 | **201** | **roacentral** | **Windows 11** | **`vm201-windows/`** |
 | **310** | **Win11-Template-Sysprep** | **Windows 11 (template de clonare)** | **`cluster/README.md`** |
-| 300 | Win11-Template | Windows 11 | ⛔ nesysprep-uit, nu clona — `docs/handoff-smb-vm303-roacentral.md` |
+| **303** | **Win11-Adina** | **Windows 11** | **`cluster/README.md`** |
 | **302** | **oracle-test-302** | **Windows 11 + Oracle 21c (test ROA)** | **`vm302-oracle-test/`** |
 
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