fix(ui): align campaign tables, recipient sizing and contextual help

Verified with the coordinated workspace changes by devkit full run
2026-09-08T225814-186389-0000-3e3ed7cd (all seven phases passed).
This shared UI pass does not mark the individual module reviews complete.

webui/src/features/campaigns/recipients/recipientProfileColumns.tsx

@@ -23,7 +23,6 @@ import {
 import { getDraftFields } from "../utils/fieldDefinitions";
 import { asRecord } from "../utils/campaignView";
 import {
-  getEntryAddresses,
   hiddenRecipientAddressMatch,
   recipientAddressFilterValue,
   recipientAddressSummary
@@ -74,7 +73,7 @@ export function recipientProfileColumns({ settings, campaignId, draft, locked, f
     id: "recipients",
     header: "Recipient(s)",
     width: "minmax(320px, 1.4fr)",
-    maxWidth: 640,
+    preferredMaxWidth: 640,
     resizable: true,
     filterable: true,
     render: (entry, index) => {
@@ -114,7 +113,7 @@ export function recipientProfileColumns({ settings, campaignId, draft, locked, f
     id: "delivery",
     header: "Delivery",
     width: "minmax(260px, 0.9fr)",
-    maxWidth: 480,
+    preferredMaxWidth: 480,
     resizable: true,
     filterable: true,
     render: (entry, index) => {
@@ -151,7 +150,7 @@ export function recipientProfileColumns({ settings, campaignId, draft, locked, f
               Postboxes ({targets.length})
             </Button>
           )}
-          {printTarget.target && (
+          {Boolean(printTarget.target) && (
             <span className="muted small-note" title={String(printTarget.target)}>
               {printTarget.channel === "internal_mail" ? "Internal mail" : "Postal"}: {String(printTarget.target)}
             </span>
@@ -185,13 +184,13 @@ export function recipientProfileColumns({ settings, campaignId, draft, locked, f
 
     },
     value: (entry) => normalizeAttachmentRules(entry.attachments).map((rule) => `${rule.label ?? ""} ${rule.file_filter ?? ""}`).join(", ")
-  }] : []),
+  } satisfies DataGridColumn<Record<string, unknown>>] : []),
   ...fieldDefinitions.filter((field) => field.can_override !== false).map((field): DataGridColumn<Record<string, unknown>> => ({
     id: `field-${field.name}`,
     header: field.label || field.name,
     width: 190,
     minWidth: 160,
-    maxWidth: 360,
+    preferredMaxWidth: 360,
     resizable: true,
     sortable: true,
     filterable: true,