Wire live VM status polling so canvas reflects state after lifecycle actions

[pparage]

Context

The status-aware lifecycle buttons (running→Stop/Pause, stopped→Start, paused→Resume) are correct, but node.data.status is static after import — useProxmoxStatus.ts (the real-time poller with mapToNodeStatus) is imported by no component. After an action, handleVmAction only calls proxmoxCache.invalidate() and never refetches/writes back status, so the panel doesn't reflect the new state until a re-import.

Also: the import flow only ever emits 'running'/'stopped' (never 'paused'), and mapToNodeStatus maps paused->'pending' / unknown->'error' — reconcile these with the ConfigPanel === 'paused' checks when wiring.

What

• Wire useProxmoxStatus (or a poll/refetch after handleVmAction) so canvas node status updates live from the v1 VM list.
• Reconcile status vocabulary between the poller, import, and ConfigPanel.

Acceptance

• After Start/Stop/Pause, the node badge + button set update without a manual re-import.

Files: src/components/ConfigPanel.vue, src/composables/useProxmoxStatus.ts, src/composables/useInfrastructureImport.ts.

[pparage]

Implemented on dev in c65f0c0 (TDD, 8 new tests). handleVmAction now optimistically sets node.data.status after a successful lifecycle action (start/resume/restart → running, stop/force-stop → stopped, pause → paused), so the canvas badge updates immediately instead of waiting for re-import. Left open pending validation on dev.