feat(web-admin): enrich mp plan card with party and follower fields.

List cards need supplier→buyer and follow user to match the approved mobile demo.

Co-authored-by: Cursor <cursoragent@cursor.com>

web-admin/scripts/check-mp-pl-plan-card.mjs

@@ -0,0 +1,32 @@
+/**
+ * Mirrors formatPartyLine in src/utils/mp-pl-plan-card.ts — keep in sync.
+ * Usage: node web-admin/scripts/check-mp-pl-plan-card.mjs
+ */
+
+function formatPartyLine(supplier, buyer) {
+  const s = (supplier || '').trim() || '—'
+  const b = (buyer || '').trim() || '—'
+  return `${s} → ${b}`
+}
+
+function assert(cond, msg) {
+  if (!cond) {
+    console.error(msg)
+    process.exit(1)
+  }
+}
+
+assert(formatPartyLine('安庆仓', '合肥某化') === '安庆仓 → 合肥某化', 'party')
+assert(formatPartyLine('', null) === '— → —', 'empty')
+assert(formatPartyLine('  ', undefined) === '— → —', 'whitespace')
+
+// buildPlanCard supplier/buyer/partyLine defaults (mirrors TS || '—' + formatPartyLine)
+function resolveBuyer(plan) {
+  return plan.customerName || plan.destinationName || '—'
+}
+assert(resolveBuyer({ customerName: 'A' }) === 'A', 'buyer customer')
+assert(resolveBuyer({ destinationName: 'B' }) === 'B', 'buyer destination')
+assert(resolveBuyer({}) === '—', 'buyer empty')
+assert(formatPartyLine(undefined, undefined) === '— → —', 'partyLine empty')
+
+console.log('check-mp-pl-plan-card: ok')