v0.318.0: the internal data place, partitions, an honest whole-box backup offer (R-1084), sys_drive never offered (R-1082)

felhom.eu architecture/16 §4-§6 (build B). MinAgent 0.157.0 — the internal place and the partitions appear only when
agent >= 0.158.0 reports them. Tests red-proved; four parity fixtures refreshed (only the new lines).

Claude-Session: https://claude.ai/code/session_012qRErfCoiTkvDK9N5XHbzb

controller/internal/web/templates/storage.html

@@ -82,6 +82,9 @@
                     </div>
                 </div>
                 {{end}}
+                {{if .IsInternal}}
+                <div class="form-hint">{{T "storage.belso_tarhely_magyarazat"}}</div>
+                {{end}}
                 {{if .FSInfo}}
                 <div class="storage-path-fsinfo mono form-hint">
                     {{.FSInfo.FSType}} · {{.FSInfo.Device}}{{if .FSInfo.Model}} · {{.FSInfo.Model}}{{end}}
@@ -138,7 +141,7 @@
                     <button type="submit" class="btn btn-xs btn-outline" title="{{T "storage.a_meghajto_ujra_valaszthato_az"}}">{{T "storage.uj_telepitesek_engedelyezese"}}</button>
                 </form>
                 {{end}}
-                {{if .IsUSB}}
+                {{if and .IsUSB (not .IsInternal)}}
                 <button class="btn btn-xs btn-danger-outline" onclick="storageDisconnect('{{.Path}}', '{{.Label}}', {{.AppCount}})" title="{{T "storage.az_itt_tarolt_alkalmazasok_leallnak"}}">{{T "storage.biztonsagos_levalasztas"}}</button>
                 {{end}}
                 {{/* List-removal is the undo of a MANUAL add only. Wizard-enrolled drives
@@ -163,7 +166,9 @@
                     <button class="btn btn-xs btn-outline" onclick="storageMigrateAll('{{.Path}}','{{.Label}}')">{{T "storage.osszes_adat_athelyezese"}}</button>
                 </span>
                 {{end}}
+                {{if not .IsInternal}}
                 <button class="btn btn-xs btn-danger-outline" onclick="storageDecommission('{{.Path}}','{{.Label}}',{{.AppCount}})" title="{{T "storage.a_meghajto_vegleges_kivonasa_a"}}">{{T "storage.vegleges_leszereles"}}</button>
+                {{end}}
             </div>
             {{end}}
         </div>
@@ -303,6 +308,8 @@ window.__registeredPaths=[{{range .StoragePaths}}{{if .Path}}"{{.Path}}",{{end}}
   function actions(d, registered, hasSafeDisconnect){
     // Destructive controls ONLY for user-data drives that are mounted under /mnt. System/backup get none.
     if(d.role!=='user-data' || !d.mount_path || d.mount_path.indexOf('/mnt/')!==0) return '';
+    // The internal data place (`16` §5) is part of the system disk: no eject, no format (the agent refuses both too).
+    if(d.kind==='internal') return '';
     // A user-data drive that ALSO backs the whole-system backup (agent `backup_target`): the agent refuses its eject
     // (403) and a data-bearing format needs a signed job, so neither button is offered (R-298 design, 2026-10-08).
     if(d.backup_target){