Easy device renaming with `matter rename`

[p0fi]

Problem

After commissioning, devices get generic names from their ProductName attribute (e.g. "On/Off Light"). Renaming requires a verbose cluster write:

matter cluster write --cluster basic-information --attribute node-label "Kitchen Light" @1/1

Even then, the updated label is only stored on the device — the local store Name field (used for autocomplete and @alias resolution) is never updated, so @kitchen-light wouldn't work after a rename.

Proposed Solution

Add a top-level matter rename command:

matter rename @1 "Kitchen Light"

This should:

1. Update the local store — set node.Name to the new label so autocomplete and @alias resolution work immediately.
2. Write NodeLabel (0x0005) to the device — sync the label to the Matter device's BasicInformation cluster so other controllers see it too.
3. Confirm the change — print the old and new name, e.g. Renamed @1: "On/Off Light" → "Kitchen Light".

Alias resolution after rename

Once renamed, all target forms should work interchangeably:

matter OnOff Toggle @1/1             # by node ID
matter OnOff Toggle @kitchen-light/1 # by alias (kebab-case of Name)

Edge cases to handle

• Name conflicts — warn (but don't block) if another node already has the same name.
• Empty name — reject empty strings; suggest matter rename @1 --reset to restore the original ProductName.
• Offline device — update the local store name even if the device is unreachable (skip the NodeLabel write with a warning).

Relevant Code

File	What it does
internal/store/types.go:22-32	Node.Name field
internal/store/bolt.go:165-185	SaveNode() — persists node including Name
cli/target.go:112-142	resolveAlias() — maps name → node ID
cli/completion/completer.go:314-317	Builds kebab-case alias from node.Name
cli/commission.go:345-349	Sets initial Name from ProductName / VendorName
internal/clusters/basicinformation/cluster.go:24	AttrNodeLabel (0x0005)

Out of Scope

• Multiple aliases per node (a single Name is sufficient for now).
• Renaming endpoints (only node-level naming).