chore(release): 0.61.1 — .btn-{tone} action-button recipe family

VERSION bump + chores release note for the R10 .btn-primary/.btn-danger/.btn-warn
recipe unification (refactor; a few primary buttons gained the standard hover).

VERSION

@@ -1 +1 @@
-0.61.0
+0.61.1

frontend/src/lib/releaseNotes.ts

@@ -14,6 +14,13 @@ export interface ReleaseEntry {
 }
 
 export const RELEASE_NOTES: ReleaseEntry[] = [
+  {
+    version: "0.61.1",
+    date: "2026-08-11",
+    chores: [
+      "Unified the primary, danger and warning action-button styling onto shared recipes, so the same kind of button looks and behaves the same everywhere (a few primary buttons gained the standard subtle hover; nothing about what the buttons do changed).",
+    ],
+  },
   {
     version: "0.61.0",
     date: "2026-08-11",