fix(journey): the share link's copy button and its switches show their words again

The filled buttons set their label in text-accent-on, the accent used as
text on a plain surface, which on the accent's own ground is the same
colour: a black button with black words. They take text-accent-text, the
colour made for words on the accent, and a test pins it.

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/components/Journey/JourneyShareSection.test.tsx

@@ -1,4 +1,4 @@
-// FE-JRN-SHARE-001 to FE-JRN-SHARE-014
+// FE-JRN-SHARE-001 to FE-JRN-SHARE-015
 
 import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest'
 import { http, HttpResponse, delay } from 'msw'
@@ -245,4 +245,15 @@ describe('JourneyShareSection', () => {
     expect(plan).toHaveAttribute('aria-pressed', 'false')
     expect(screen.getByRole('button', { name: /Recorded routes/ })).toBeDisabled()
   })
+
+  it('FE-JRN-SHARE-015: a filled accent button sets its words in the colour made for it, not in the accent itself', async () => {
+    server.use(http.get('/api/journeys/7/share-link', () => HttpResponse.json({ link: existingLink() })))
+    render(<JourneyShareSection journeyId={JOURNEY_ID} />)
+
+    const filled = [await screen.findByRole('button', { name: 'Timeline' }), screen.getByRole('button', { name: 'Copy' })]
+    for (const button of filled) {
+      expect(button.className).toContain('text-accent-text')
+      expect(button.className).not.toContain('text-accent-on')
+    }
+  })
 })

client/src/components/Journey/JourneyShareSection.tsx

@@ -69,7 +69,7 @@ export default function JourneyShareSection({ journeyId }: { journeyId: number }
             <span className="flex-1 text-caption text-content-muted truncate">{shareUrl}</span>
             <button type="button"
               onClick={copyLink}
-              className="flex-shrink-0 px-3 py-1.5 rounded-full bg-accent text-accent-on text-caption font-semibold hover:bg-accent-hover transition-colors"
+              className="flex-shrink-0 px-3 py-1.5 rounded-full bg-accent text-accent-text text-caption font-semibold hover:bg-accent-hover transition-colors"
             >
               {copied ? t('journey.share.copied') : t('journey.share.copy')}
             </button>
@@ -94,7 +94,7 @@ export default function JourneyShareSection({ journeyId }: { journeyId: number }
                 onClick={() => togglePerm(key)}
                 className={`flex items-center gap-2.5 px-3 py-2 rounded-xl border text-body font-medium transition-all ${
                   link[key]
-                    ? 'border-accent bg-accent text-accent-on'
+                    ? 'border-accent bg-accent text-accent-text'
                     : 'border-edge text-content-muted hover:border-content-faint'
                 }`}
               >

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('## ')) {