Activist Guide: move 'donation history' prose to directly below the mode table

The donor-history visibility note is most useful as immediate context
on what the table just compared, so it now sits right after the
modeComparison block instead of being the page's closing section.

src/lib/helpContent.ts

@@ -519,6 +519,14 @@ const ACTIVIST_GUIDE_TEMPLATE: GuideBlock[] = [
     audience: 'activist',
     footnote: 'You can\u2019t switch a campaign\u2019s mode after it\u2019s created. If you change your mind, make a new campaign.',
   },
+  {
+    kind: 'prose',
+    heading: 'Your donation history and future supporters',
+    paragraphs: [
+      'In **Fast Mode**, anyone considering supporting your campaign can look up the address and see the full donation history. A thin or uneven record affects how new donors decide to give.',
+      'In **Private Mode**, that history isn\u2019t directly visible. New donors only see whatever you publish about the campaign\u2019s progress.',
+    ],
+  },
   {
     kind: 'callout',
     variant: 'warning',
@@ -582,14 +590,6 @@ const ACTIVIST_GUIDE_TEMPLATE: GuideBlock[] = [
     title: 'Avoid centralized tumblers',
     body: 'Custodial mixers can steal your coins, log who sent what, or turn out to be law-enforcement honeypots. Use coinjoin (non-custodial) instead.',
   },
-  {
-    kind: 'prose',
-    heading: 'Your donation history and future supporters',
-    paragraphs: [
-      'In **Fast Mode**, anyone considering supporting your campaign can look up the address and see the full donation history. A thin or uneven record affects how new donors decide to give.',
-      'In **Private Mode**, that history isn\u2019t directly visible. New donors only see whatever you publish about the campaign\u2019s progress.',
-    ],
-  },
 ];
 
 /** Substitute placeholders in a single guide block. */