feat(admin): release notes show a #### heading as the feature it names

The release notes in Admin read ## as the version and ### as a section,
and printed a #### line as plain text. A release that heads each feature
inside a section with #### (Tours, TREK Studio under Added) now shows it
as a feature heading between the section and its text, on desktop and on
the phone.

client/src/components/Admin/GitHubPanel.tsx

@@ -102,6 +102,13 @@ export default function GitHubPanel({ isPrerelease = false }: { isPrerelease?: b
           </ul>
         );
       }
+      if (block.kind === 'h5') {
+        return (
+          <h5 key={idx} className="mb-1 mt-3 font-semibold text-content first:mt-0" style={fs(12.5, 'body')}>
+            {block.text}
+          </h5>
+        );
+      }
       if (block.kind === 'h4') {
         return (
           <h4 key={idx} className="mb-1 mt-3 font-geist font-bold uppercase tracking-[.08em] text-content-faint first:mt-0" style={fs(10)}>

client/src/mobile/screens/admin/MAdminGitHubPanel.tsx

@@ -83,6 +83,13 @@ export default function MAdminGitHubPanel({ isPrerelease = false }: { isPrerelea
           </ul>
         )
       }
+      if (block.kind === 'h5') {
+        return (
+          <h5 key={idx} className="text-caption font-semibold mt-3 mb-1 text-m-ink">
+            {block.text}
+          </h5>
+        );
+      }
       if (block.kind === 'h4') {
         return (
           <h4 key={idx} className="text-xs font-semibold mt-3 mb-1 text-m-ink">

client/src/utils/releaseNotes.test.ts

@@ -22,11 +22,11 @@ describe('parseReleaseNotes', () => {
     ]);
   });
 
-  it('FE-UTIL-RELNOTES-003: lines are trimmed and markers need their space', () => {
+  it('FE-UTIL-RELNOTES-003: lines are trimmed, markers need their space and #### heads a feature', () => {
     expect(parseReleaseNotes('   ## Spaced  \n-no space\n#### deep\n\n\n')).toEqual([
       { kind: 'h3', text: 'Spaced' },
       { kind: 'p', text: '-no space' },
-      { kind: 'p', text: '#### deep' },
+      { kind: 'h5', text: 'deep' },
     ]);
   });
 

client/src/utils/releaseNotes.ts

@@ -1,5 +1,5 @@
 /** One block of a release body: a heading, a paragraph, or a run of list items. */
-export type ReleaseNoteBlock = { kind: 'h3' | 'h4' | 'p'; text: string } | { kind: 'ul'; items: string[] };
+export type ReleaseNoteBlock = { kind: 'h3' | 'h4' | 'h5' | 'p'; text: string } | { kind: 'ul'; items: string[] };
 
 /** Escapes the characters that would let release text break out of the HTML it is placed in. */
 export function escapeReleaseHtml(str: string): string {
@@ -7,8 +7,8 @@ export function escapeReleaseHtml(str: string): string {
 }
 
 /**
- * Splits a GitHub release body into the blocks both admin shells render: `### ` and `## `
- * headings, `- ` or `* ` list items gathered into one list until anything else breaks the
+ * Splits a GitHub release body into the blocks both admin shells render: `## `, `### ` and
+ * `#### ` headings (the version, a section such as Added, a feature inside it), `- ` or `* ` list items gathered into one list until anything else breaks the
  * run, and every other non-empty line as a paragraph. Blank lines only end a list. The
  * text stays raw; each shell formats it inline itself.
  */
@@ -30,7 +30,10 @@ export function parseReleaseNotes(body: string): ReleaseNoteBlock[] {
       continue;
     }
 
-    if (trimmed.startsWith('### ')) {
+    if (trimmed.startsWith('#### ')) {
+      flushList();
+      blocks.push({ kind: 'h5', text: trimmed.slice(5) });
+    } else if (trimmed.startsWith('### ')) {
       flushList();
       blocks.push({ kind: 'h4', text: trimmed.slice(4) });
     } else if (trimmed.startsWith('## ')) {