printedparts stage 17: gage-lab asset tag + print-files redesign

The gage lab assigns real WJRP asset numbers, so identity splits: the
internal itemcode stays auto-minted and a new optional unique
gagelabtag (migration 0003) carries the lab's number - settable on
create/edit, searchable, and resolved by the kiosk for scans and bare
keypad digits against the numeric tail of either identifier
(unique-match only). The print-files table becomes stacked revision
cards - filename with rev/current badges, one meta line, delete pinned
right - ending the horizontal scroll in that column.

docs/PLUGIN-LAB-PRINTEDPARTS.md

@@ -1090,6 +1090,17 @@ failure. Summaries here; complete diffs at the tags.
   keypad-driven manual entry (the stage-7 code above is the corrected
   version).
 
+- **17 - the gage-lab asset tag** (`lab-stage-17`): the field team assigns
+  real WJRP asset numbers at the gage lab, so identity split in two: the
+  internal `itemcode` stays auto-minted (stable, encodes the row id) and a
+  new optional UNIQUE `gagelabtag` carries the lab's number (migration
+  0003). Search covers it; the kiosk resolves scans and bare keypad digits
+  against the numeric tail of EITHER identifier, unique-match only. Lesson:
+  when the real world already numbers things, model their identifier
+  alongside yours instead of fighting over one field. Also in this stage:
+  the print-files table became stacked revision cards after the table
+  forced horizontal scrolling in its column.
+
 Post-stage polish (untagged commits): the kiosk launches from the sidebar's
 "Displays" section (beside Shopfloor Dashboard / TV Slideshow, plugin-gated,
 new tab), and the keypad was restyled into a terminal-style panel after the