Work-order codes no longer overlap (#42), Materials before Heat map (#44), 60 min idle for Admin and Clerical (#45)

- Traveler: each work-order line shrinks, then clips, to fit its own box; 18 pt gap between boxes
- Work orders tab: card text wraps inside the card, smaller work order, wider cards
- Packet tabs: Materials before Heat map
- Sessions: SESSION_DESK_MINUTES (60) for Admin and Clerical lock and sign-out; /me answers
  lock_minutes and the browser's idle lock follows it

Co-Authored-By: Claude Opus 5.5 <[email protected]>

frontend/src/packet/PacketPage.tsx

@@ -35,7 +35,7 @@ import { packetMessage, pillClassFor, WH_STAGES, pillText, progress, whLine, whS
 import { useWhMove } from "../warehouse/useWhMove";
 
 type Tab = "drawing" | "heat" | "materials" | "checklist" | "welds" | "qc" | "workorders" | "changes" | "docs" | "history";
-const TABS: readonly Tab[] = ["drawing", "heat", "materials", "checklist", "welds", "qc", "workorders", "changes", "docs", "history"];
+const TABS: readonly Tab[] = ["drawing", "materials", "heat", "checklist", "welds", "qc", "workorders", "changes", "docs", "history"];
 function isTab(v: string | null): v is Tab {
   return v !== null && (TABS as readonly string[]).includes(v);
 }
@@ -332,8 +332,8 @@ export function PacketPage() {
   const ckOpen = p.checklist_items.filter((i) => !p.stage?.checklist?.[i.key]?.done).length;
   const tabs: Array<{ id: Tab; label: string; count?: number }> = [
     { id: "drawing", label: "Drawing", count: drawingPages.length },
-    { id: "heat", label: "Heat map" },
     { id: "materials", label: "Materials", count: p.bom.length },
+    { id: "heat", label: "Heat map" },
     { id: "checklist", label: "Checklist", ...(p.stage ? { count: ckOpen } : {}) },
     { id: "welds", label: "Weld map", count: p.welds.length },
     ...(hasQc ? [{ id: "qc" as const, label: "Q.C." }] : []),