Add batch ULINE label printing for all asset types

A multi-select batch sheet at /print/asset-label-batch/<type> lays
selected assets onto ULINE label pages (6-up 3x3 or dense 72-up mini),
with code-type and encode toggles matching the single label, plus a
start-cell offset for partial sheets. Print Labels buttons on all five
asset list pages. The per-type config and encode resolution are
extracted to a shared print/assetLabel.js used by both the single and
batch views. Measuring-tool batches encode each tool inspection-
operation code (decode-verified 0615).

808 tests pass.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -55,6 +55,14 @@ ADR-007 and ADR-002.
   has no value (e.g. serial number on an asset with none), the label states so
   instead of rendering an empty code. Asset payloads now carry a derived
   `locationcode` (leading token of the resolved own/inherited location name).
+- Batch label sheets: a "Print Labels" button on each asset list page opens
+  `/print/asset-label-batch/<assettype>`, a multi-select sheet that lays the
+  chosen assets onto ULINE label pages (6-up 3 in x 3 in, or a dense 72-up
+  mini-label format), with a start-cell offset to reuse partial sheets. Shares
+  the same code-type and encode settings/defaults as the single label, so a
+  batch of measuring tools encodes each tool's inspection location code just
+  like the single label does. Restores the ULINE batch printing the legacy
+  shopdb had, generalized across all asset types.
 - Support-team contact UX: the settings Support Teams page now manages each
   team's contacts in a per-team "Contacts (N)" modal (name, SSO, active, plus
   Add/Edit/Delete) instead of an inline row expander, and the application