changelog: Describe changes since 30.0.265 so far

Author: gnprice

docs/changelog.md

@@ -2,6 +2,32 @@
 
 ## Unreleased
 
+### Highlights for users
+
+* Polls show immediate feedback when you vote. (#1808)
+
+
+### Highlights for developers
+
+* User-visible changes not described above:
+  * Use group-based permission to better determine when to show
+    can't-send banner. (#1862)
+  * Tone down can't-send banner. (#1870)
+  * Use group-based permission to better determine what warning text
+    to show in unsubscribe confirmation dialog. (#1786)
+  * Adjust color in toggle thumbs. (PR #1891)
+  * Show "#" before channel name in a dialog. (PR #1893)
+  * Confirm before unsubscribing, in more cases. (#1878, #1827)
+  * Adjust color in inbox unread badges. (PR #1895)
+  * Adjust placeholder text for self-DMs. (PR #1876)
+  * Show refresh/subscribe banner in some cases on message feed
+    when not subscribed. (PR #1873, toward #1798)
+  * Show channel/topic at top of their action sheets. (#1533)
+
+* Resolved: #1862, PR #1885, #1870, #1786, PR #1891, PR #1893, #1878,
+  #1827, #1837, PR #1895, #1808, #1036, PR #1876, PR #1873, PR #1894,
+  #1533
+
 
 ## 30.0.265 (2025-09-25)